const { join, resolve, basename, delimiter } = require('node:path')
const t = require('tap')
const runScript = require('@npmcli/run-script')
const localeCompare = require('@isaacs/string-locale-compare')('en')
// TODO mock registry (will require several because of differing hosts
const tnock = require('../fixtures/tnock')
const fs = require('node:fs')
const fsp = require('node:fs/promises')
const npmFs = require('@npmcli/fs')
const MockRegistry = require('@npmcli/mock-registry')
const { dirname, relative } = require('node:path')

let failRm = false
let failRename = null
let failRenameOnce = null
let failMkdir = null

const fspMock = {
  ...fsp,
  mkdir: async (...args) => {
    if (failMkdir) {
      throw failMkdir
    }

    return fsp.mkdir(...args)
  },
  rename: async (...args) => {
    if (failRename) {
      throw failRename
    } else if (failRenameOnce) {
      const er = failRenameOnce
      failRenameOnce = null
      throw er
    } else {
      return fsp.rename(...args)
    }
  },
  rm: async (...args) => {
    if (failRm) {
      throw new Error('rm fail')
    }

    return fsp.rm(...args)
  },
}

// need this to be injected so that it doesn't pull from main cache
const { moveFile } = t.mock('@npmcli/fs', { 'fs/promises': fspMock })
const mocks = {
  'node:fs/promises': fspMock,
  '@npmcli/fs': { ...npmFs, moveFile },
}

const oldLockfileWarning = [
  'warn',
  'old lockfile',
  `
The package-lock.json file was created with an old version of npm,
so supplemental metadata must be fetched from the registry.

This is a one-time fix-up, please be patient...
`,
]

// track the warnings that are emitted.  returns a function that removes
// the listener and provides the list of what it saw.
const warningTracker = () => {
  const list = []
  const onlog = (...msg) => msg[0] === 'warn' && list.push(msg)
  process.on('log', onlog)
  return () => {
    process.removeListener('log', onlog)
    return list
  }
}

const outputTracker = () => {
  const list = []
  const onlog = (...msg) => msg[0] === 'standard' && list.push(msg)
  process.on('output', onlog)
  return () => {
    process.removeListener('output', onlog)
    return list
  }
}

const debugLogTracker = () => {
  const list = []
  mockDebug.log = (...msg) => list.push(msg)
  return () => {
    mockDebug.log = () => {}
    return list
  }
}
const mockDebug = Object.assign(fn => fn(), { log: () => {} })

const Arborist = t.mock('../..', {
  ...mocks,
  // need to not mock this one, so we still can swap the process object
  '../../lib/signal-handling.js': require('../../lib/signal-handling.js'),

  // mock the debug so we can test these even when not enabled
  '../../lib/debug.js': mockDebug,
})

const { Node, Link, Shrinkwrap } = Arborist

const {
  normalizePath,
  normalizePaths,
  printTree,
} = require('../fixtures/utils.js')

const cwd = normalizePath(process.cwd())
t.cleanSnapshot = s => s.split(cwd).join('{CWD}')

const fixture = (t, p) => require('../fixtures/reify-cases/' + p)(t)

const printReified = (path, opt) => reify(path, opt).then(printTree)
const fixtures = join(__dirname, '..', 'fixtures')
const createRegistry = (t, mocks) => {
  const registry = new MockRegistry({
    strict: true,
    tap: t,
    registry: 'https://registry.npmjs.org',
  })
  if (mocks) {
    registry.mocks({ dir: join(__dirname, '..', 'fixtures') })
  }
  return registry
}

const newArb = (opt) => new Arborist({
  audit: false,
  cache: opt.path,
  // give it a very long timeout so CI doesn't crash as easily
  timeout: 30 * 60 * 1000,
  ...opt,
})

const reify = (path, opt = {}) => newArb({ path, ...opt }).reify(opt)

t.test('bundled file dep with same name as other dep', async t => {
  const registry = createRegistry(t)
  registry.mocks({ dir: fixtures })
  const tree = await printReified(fixture(t, 'conflict-bundle-file-dep'))
  t.matchSnapshot(tree)
})

t.test('tarball deps with transitive tarball deps', async t => {
  createRegistry(t)
  await t.resolveMatchSnapshot(printReified(fixture(t, 'tarball-dependencies')))
})

t.test('update a yarn.lock file', async t => {
  const path = fixture(t, 'yarn-lock-mkdirp')
  createRegistry(t, true)
  const tree = await reify(path, { add: ['abbrev'] })
  t.matchSnapshot(printTree(tree), 'add abbrev')
  t.matchSnapshot(fs.readFileSync(path + '/yarn.lock', 'utf8'), 'updated yarn lock')
})

t.test('weirdly broken lockfile without resolved value', async t => {
  createRegistry(t, true)
  await t.resolveMatchSnapshot(printReified(fixture(t, 'dep-missing-resolved')))
})

t.test('testing-peer-deps package', async t => {
  createRegistry(t, true)
  await t.resolveMatchSnapshot(printReified(fixture(t, 'testing-peer-deps')))
})

t.test('just the shrinkwrap', async t => {
  await t.test('cli-750-fresh', async t => {
    const path = fixture(t, 'cli-750-fresh')
    createRegistry(t, false)
    const arb = newArb({ path, audit: true, packageLockOnly: true })
    await arb.reify()
    t.throws(() => fs.statSync(path + '/node_modules'), { code: 'ENOENT' })
    t.matchSnapshot(fs.readFileSync(path + '/package-lock.json', 'utf8'))
  })
  await t.test('yarn-lock-mkdirp', async t => {
    const path = fixture(t, 'yarn-lock-mkdirp')
    const registry = createRegistry(t, true)
    registry.audit({})
    const arb = newArb({ path, audit: true, packageLockOnly: true })
    await arb.reify()
    t.throws(() => fs.statSync(path + '/node_modules'), { code: 'ENOENT' })
    t.matchSnapshot(fs.readFileSync(path + '/package-lock.json', 'utf8'))
  })
})

t.test('packageLockOnly can add deps', async t => {
  const path = t.testdir({ 'package.json': '{}' })
  createRegistry(t, true)
  await reify(path, { add: ['abbrev'], packageLockOnly: true })
  t.matchSnapshot(fs.readFileSync(path + '/package.json', 'utf8'))
  t.matchSnapshot(fs.readFileSync(path + '/package-lock.json', 'utf8'))
  t.throws(() => fs.statSync(path + '/node_modules'), { code: 'ENOENT' })
})

t.test('packageLockOnly with linked strategy in workspaces', async t => {
  const path = t.testdir({
    'package.json': JSON.stringify({
      name: 'repro',
      private: true,
      workspaces: ['packages/*'],
    }),
    packages: {
      a: {
        'package.json': JSON.stringify({
          name: 'a',
          version: '1.0.0',
        }),
      },
    },
  })
  createRegistry(t, false)
  await reify(path, { packageLockOnly: true, installStrategy: 'linked' })
  t.ok(fs.existsSync(path + '/package-lock.json'), 'lock file created')
  t.throws(() => fs.statSync(path + '/node_modules'), { code: 'ENOENT' })
})

t.test('linked strategy audits the non-isolated tree', async t => {
  // The isolated tree has no queryable inventory, so auditing it reports nothing. The install-time audit must run against the non-isolated tree, matching standalone npm audit. https://github.com/npm/cli/issues/9609
  const src = resolve(fixtures, 'audit-one-vuln')
  // Copy into a throwaway dir since packageLockOnly rewrites the lockfile.
  const path = t.testdir({
    'package.json': fs.readFileSync(join(src, 'package.json'), 'utf8'),
    'package-lock.json': fs.readFileSync(join(src, 'package-lock.json'), 'utf8'),
  })
  const registry = createRegistry(t, true)
  registry.audit({ convert: true, results: require(join(src, 'audit.json')) })
  const arb = newArb({ path, audit: true, packageLockOnly: true, installStrategy: 'linked' })
  await arb.reify()
  t.ok(arb.auditReport.has('minimist'), 'vulnerable package reported under linked strategy')
})

t.test('malformed package.json should not be overwritten', async t => {
  t.plan(2)

  const path = fixture(t, 'malformed-json')
  createRegistry(t, false)
  const originalContent = fs.readFileSync(path + '/package.json', 'utf8')

  try {
    await reify(path)
  } catch (err) {
    t.match(err, { code: 'EJSONPARSE' }, 'should throw EJSONPARSE error')
  }

  const resultContent = fs.readFileSync(path + '/package.json', 'utf8')
  t.equal(
    resultContent,
    originalContent,
    'should not touch file contents on malformed json'
  )
})

t.test('packageLockOnly does not work on globals', t => {
  const path = t.testdir({ 'package.json': '{}' })
  createRegistry(t, false)
  return t.rejects(() => reify(path, { global: true, packageLockOnly: true }))
})

t.test('omit peer deps', t => {
  const path = fixture(t, 'testing-peer-deps')
  createRegistry(t, true)
  // in this one we also snapshot the timers, mostly just as a smoke test
  const timers = {}
  const finishedTimers = []
  const onTime = (level, name) => {
    if (level === 'start') {
      t.notOk(timers[name], 'should not have duplicated timers started')
      timers[name] = true
    } else if (level === 'end') {
      t.ok(timers[name], 'should not end unstarted timer')
      delete timers[name]
      finishedTimers.push(name)
    }
  }
  process.on('time', onTime)

  return reify(path, { omit: ['peer'] })
    .then(tree => {
      for (const node of tree.inventory.values()) {
        t.equal(node.peer, false, 'did not reify any peer nodes')
      }

      const lock = require(tree.path + '/package-lock.json')
      // eslint-disable-next-line promise/always-return
      for (const [loc, meta] of Object.entries(lock.packages)) {
        if (meta.peer) {
          t.throws(() => fs.statSync(resolve(path, loc)), 'peer not reified')
        } else {
          t.equal(fs.statSync(resolve(path, loc)).isDirectory(), true)
        }
      }
    })
  // eslint-disable-next-line promise/always-return
    .then(() => {
      process.removeListener('time', onTime)
      finishedTimers.sort(localeCompare)
      t.matchSnapshot(finishedTimers, 'finished timers')
      t.strictSame(timers, {}, 'should have no timers in progress now')
    })
})

t.test('testing-peer-deps nested', async t => {
  createRegistry(t, true)
  await t.resolveMatchSnapshot(printReified(fixture(t, 'testing-peer-deps-nested')))
})

t.test('a workspace with a duplicated nested conflicted dep', async t => {
  createRegistry(t, true)
  await t.resolveMatchSnapshot(printReified(fixture(t, 'workspace4')))
})

t.test('testing-peer-deps nested with update', async t => {
  createRegistry(t, true)
  await t.resolveMatchSnapshot(printReified(fixture(t, 'testing-peer-deps-nested'), {
    update: { names: ['@isaacs/testing-peer-deps'] },
    save: false,
  }))
})

t.test('update a bundling node without updating all of its deps', t => {
  const path = fixture(t, 'tap-react15-collision-legacy-sw')
  createRegistry(t, true)

  // check that it links the bin
  const bin = resolve(path, 'node_modules/.bin/tap')
  const checkBin = process.platform === 'win32'
    ? () => t.ok(fs.statSync(bin + '.cmd').isFile(), 'created shim')
    : () => t.ok(fs.lstatSync(bin).isSymbolicLink(), 'created symlink')

  const checkPackageLock = () => {
    t.match(require(path + '/package-lock.json').packages['node_modules/fsevents'],
      {
        dev: true,
        optional: true,
      },
      'contains fsevents in lockfile')
  }

  return t.resolveMatchSnapshot(printReified(path, {
    saveType: 'dev',
    add: ['tap@14.10.5'],
    omit: ['optional'],
  }))
    .then(checkBin)
    .then(checkPackageLock)
})

t.test('Bundles rebuilt as long as rebuildBundle not false', async t => {
  t.test('rebuild the bundle', async t => {
    const path = fixture(t, 'testing-rebuild-bundle')
    createRegistry(t, true)
    const a = resolve(path, 'node_modules/@isaacs/testing-rebuild-bundle-a')
    const dir = resolve(a, 'node_modules/@isaacs/testing-rebuild-bundle-b')
    const file = resolve(dir, 'cwd')
    await reify(path)
    t.equal(fs.readFileSync(file, 'utf8'), dir)
  })
  t.test('do not rebuild the bundle', async t => {
    const path = fixture(t, 'testing-rebuild-bundle')
    createRegistry(t, true)
    const a = resolve(path, 'node_modules/@isaacs/testing-rebuild-bundle-a')
    const dir = resolve(a, 'node_modules/@isaacs/testing-rebuild-bundle-b')
    const file = resolve(dir, 'cwd')
    await reify(path, { rebuildBundle: false })
    t.throws(() => fs.statSync(file))
  })
})

t.test('transitive deps containing asymmetrical bin no lockfile', t => {
  const path = fixture(t, 'testing-asymmetrical-bin-no-lock')
  createRegistry(t, true)

  // check that it links the bin
  const bin = resolve(path, 'node_modules/.bin/b')
  const checkBin = process.platform === 'win32'
    ? () => t.ok(fs.statSync(bin + '.cmd').isFile(), 'created shim')
    : () => t.ok(fs.lstatSync(bin).isSymbolicLink(), 'created symlink')

  return t.resolveMatchSnapshot(printReified(path, { packageLock: false }))
    .then(checkBin)
    .then(() => t.throws(() => fs.statSync(path + '/package-lock.json')))
})

t.test('transitive deps containing asymmetrical bin with lockfile', t => {
  const path = fixture(t, 'testing-asymmetrical-bin-with-lock')
  createRegistry(t, true)

  // check that it links the bin
  const bin = resolve(path, 'node_modules/.bin/b')
  const checkBin = process.platform === 'win32'
    ? () => t.ok(fs.statSync(bin + '.cmd').isFile(), 'created shim')
    : () => t.ok(fs.lstatSync(bin).isSymbolicLink(), 'created symlink')

  return t.resolveMatchSnapshot(printReified(path, {}))
    .then(checkBin)
})

t.test('omit optional dep', t => {
  const path = fixture(t, 'tap-react15-collision-legacy-sw')
  createRegistry(t, true)

  const arb = newArb({ path, ignoreScripts: true })
  // eslint-disable-next-line promise/always-return
  return arb.reify({ omit: ['optional'] }).then(tree => {
    t.equal(tree.children.get('fsevents'), undefined, 'no fsevents in tree')
    t.throws(() => fs.statSync(path + '/node_modules/fsevents'), 'no fsevents unpacked')
    t.match(require(path + '/package-lock.json').packages['node_modules/fsevents'], {
      dev: true,
      optional: true,
    }, 'fsevents present in lockfile')
  })
    .then(() => t.ok(arb.diff, 'has a diff tree'))
})

t.test('dev, optional, devOptional flags and omissions', t => {
  const path = 'testing-dev-optional-flags'
  const omits = [['dev'], ['dev', 'optional'], ['optional']]
  t.plan(omits.length)
  omits.forEach(omit => t.test(omit.join(','), async t => {
    createRegistry(t, true)
    await t.resolveMatchSnapshot(printReified(fixture(t, path), {
      omit,
    }))
  }))
})

t.test('omit reports no diff on second run', async t => {
  const path = fixture(t, 'testing-dev-optional-flags')
  createRegistry(t, true)
  const arb = newArb({ path })
  await arb.reify({ omit: ['dev'] })
  t.equal(arb.actualTree.children.get('once'), undefined, 'no once in tree')
  t.ok(arb.diff.children.length, 'first reify has changes')
  await arb.reify({ omit: ['dev'] })
  t.equal(arb.actualTree.children.get('once'), undefined, 'no once in tree')
  t.notOk(arb.diff.children.length, 'second reify has no changes')
  await arb.reify({})
  t.ok(arb.actualTree.children.get('once'), 'once in tree')
  t.ok(arb.diff.children.length, 'removing omit has changes')
})

t.test('omits when both dev and optional flags are set', t => {
  const path = 'testing-dev-optional-flags-2'
  const omits = [['dev'], ['optional']]
  t.plan(omits.length)
  omits.forEach(omit => t.test(omit.join(','), async t => {
    createRegistry(t, true)
    await t.resolveMatchSnapshot(printReified(fixture(t, path), {
      omit,
    }))
  }))
})

t.test('bad shrinkwrap file', async t => {
  createRegistry(t, true)
  await t.resolveMatchSnapshot(printReified(fixture(t, 'testing-peer-deps-bad-sw')))
})

t.test('multiple bundles at the same level', t => {
  const path = fixture(t, 'two-bundled-deps')
  createRegistry(t, true)
  const a = newArb({ path })
  return a.reify().then(tree => {
    const root = tree.root
    const p = printTree(tree)
    // just fail on the failures, we don't need a zillion tap lines here
    for (const n of tree.inventory.values()) {
      if (n.root !== root) {
        t.equal(n.root, root, 'in same tree')
      } else {
        for (const e of n.edgesIn) {
          if (e.from.root !== root) {
            t.equal(e.from.root, root,
              `edge in same tree ${e.from.location} -> ${n.location}`)
          }
        }
      }
    }
    return t.matchSnapshot(p)
  })
})

t.test('update a node without updating its children', async t => {
  createRegistry(t, true)
  await t.resolveMatchSnapshot(printReified(fixture(t, 'once-outdated'),
    { update: { names: ['once'] }, save: false }))
})

t.test('do not add shrinkwrapped deps', async t => {
  createRegistry(t, true)
  await t.resolveMatchSnapshot(printReified(
    fixture(t, 'shrinkwrapped-dep-no-lock'), { update: true }))
})

t.test('do not update shrinkwrapped deps', async t => {
  createRegistry(t, false)
  await t.resolveMatchSnapshot(printReified(
    fixture(t, 'shrinkwrapped-dep-with-lock'),
    { update: { names: ['abbrev'] } }))
})

t.test('tracks changes of shrinkwrapped dep correctly', async t => {
  const path = t.testdir({ 'package.json': '{}' })
  createRegistry(t, true)

  const install1 = await printReified(path, { add: ['@nlf/shrinkwrapped-dep-updates-a@1.0.0'] })
  t.matchSnapshot(install1, 'install added the correct tree')

  const update1 = await printReified(path, { update: true })
  t.match(install1, update1, 'update maintains the same correct tree')

  const install2 = await printReified(path, { add: ['@nlf/shrinkwrapped-dep-updates-a@2.0.0'] })
  t.matchSnapshot(install2, 'installing new version brings in the correct children')

  const update2 = await printReified(path, { update: true })
  t.match(install2, update2, 'update maintains the same correct tree')

  // delete a dependency that was installed as part of the shrinkwrap
  fs.rmSync(resolve(path, 'node_modules/@nlf/shrinkwrapped-dep-updates-a/node_modules/@nlf/shrinkwrapped-dep-updates-b'), { recursive: true, force: true })
  const repair = await printReified(path)
  t.match(repair, install2, 'tree got repaired')
})

t.test('do not install optional deps with mismatched platform specifications', async t => {
  createRegistry(t, true)
  const path = fixture(t, 'optional-platform-specification')
  const tree = await reify(path)
  t.equal(tree.children.size, 0, 'does not have deps')
})

t.test('do not report failed optional deps as installed', async t => {
  createRegistry(t, true)
  const path = fixture(t, 'optional-platform-specification')
  const arb = newArb({ path })
  await arb.reify()
  t.equal(arb.diff.children.length, 0, 'no changes, nothing installed')
})

t.test('still do not install optional deps with mismatched platform specifications even when forced', async t => {
  createRegistry(t, true)
  const path = fixture(t, 'optional-platform-specification')
  const tree = await reify(path, { force: true })
  t.equal(tree.children.size, 0, 'does not have deps')
})

t.test('fail to install deps with mismatched platform specifications', async t => {
  createRegistry(t, true)
  await t.rejects(reify(fixture(t, 'platform-specification')), { code: 'EBADPLATFORM' })
})

t.test('success to install optional deps with matched platform specifications with os and cpu and libc options', async t => {
  createRegistry(t, true)
  const path = fixture(t, 'optional-platform-specification')
  const tree = await reify(path, { os: 'not-your-os', cpu: 'not-your-cpu', libc: 'not-your-libc' })
  t.equal(tree.children.size, 1, 'does have deps')
})

t.test('fail to install optional deps with matched os and mismatched cpu with os and cpu and libc options', async t => {
  createRegistry(t, true)
  const path = fixture(t, 'optional-platform-specification')
  const tree = await reify(path, { os: 'not-your-os', cpu: 'another-cpu', libc: 'not-your-libc' })
  t.equal(tree.children.size, 0, 'does not have deps')
})

t.test('fail to install optional deps with mismatched os and matched cpu with os and cpu and libc options', async t => {
  createRegistry(t, true)
  const path = fixture(t, 'optional-platform-specification')
  const tree = await reify(path, { os: 'another-os', cpu: 'not-your-cpu', libc: 'not-your-libc' })
  t.equal(tree.children.size, 0, 'does not have deps')
})

t.test('fail to install optional deps with matched os and matched cpu and mismatched libc with os and cpu and libc options', async t => {
  createRegistry(t, true)
  const path = fixture(t, 'optional-platform-specification')
  const tree = await reify(path, { os: 'another-os', cpu: 'not-your-cpu', libc: 'not-your-libc' })
  t.equal(tree.children.size, 0, 'does not have deps')
})

t.test('dry run, do not get anything wet', async t => {
  const cases = [
    ['shrinkwrapped-dep-with-lock-empty', false],
    ['shrinkwrapped-dep-no-lock-empty', true],
    ['link-dep-empty', false],
    ['link-meta-deps-empty', true],
    ['testing-bundledeps-empty', true],
  ]
  t.plan(cases.length)
  for (const [c, mocks] of cases) {
    await t.test(c, async t => {
      const path = fixture(t, c)
      createRegistry(t, mocks)
      const arb = newArb({ path, dryRun: true })
      t.matchSnapshot(printTree(await arb.reify()))
      t.throws(() => fs.statSync(resolve(path, 'node_modules')))
      t.ok(arb.diff)
    })
  }
})

t.test('reifying with shronk warp dep', t => {
  const cases = [
    ['shrinkwrapped-dep-with-lock', false],
    ['shrinkwrapped-dep-with-lock-empty', true],
    ['shrinkwrapped-dep-no-lock', true],
    ['shrinkwrapped-dep-no-lock-empty', true],
  ]
  t.plan(cases.length)
  for (const [c, mocks] of cases) {
    t.test(c, async t => {
      const path = fixture(t, c)
      createRegistry(t, mocks)
      const tree = await printReified(path, {
        // set update so that we don't start the idealTree
        // with the actualTree, and can see that the deps
        // are indeed getting set up from the shrink wrap
        update: /no-lock/.test(c),
      })
      t.matchSnapshot(tree)
      const dep = `${path}/node_modules/@isaacs/shrinkwrapped-dependency`
      t.equal(fs.statSync(`${dep}/package.json`).isFile(), true, 'has package.json')
    })
  }
})

t.test('link deps already in place', async t => {
  createRegistry(t, false)
  await t.resolveMatchSnapshot(printReified(fixture(t, 'link-dep')))
})

t.test('create link deps', async t => {
  createRegistry(t, false)
  await t.resolveMatchSnapshot(printReified(fixture(t, 'link-dep-empty')))
})

t.test('link meta deps, fresh install', async t => {
  createRegistry(t, true)
  await t.resolveMatchSnapshot(printReified(fixture(t, 'link-meta-deps-empty')))
})

t.test('link meta deps, update', async t => {
  createRegistry(t, true)
  await t.resolveMatchSnapshot(printReified(fixture(t, 'link-meta-deps'), {
    // use legacy nesting so we leave the link nested
    legacyNesting: true,
    add: [
      '@isaacs/testing-link-dep@2',
      '@isaacs/testing-link-dev-dep@2',
    ],
  }))
})

t.test('update a child of a node with bundled deps', async t => {
  const path = fixture(t, 'testing-bundledeps-legacy-bundling')
  createRegistry(t, true)
  await t.resolveMatchSnapshot(printReified(path, {
    update: ['@isaacs/testing-bundledeps-c'],
    installStrategy: 'nested',
  }))
})

t.test('update a node without updating a child that has bundle deps', async t => {
  const path = fixture(t, 'testing-bundledeps-3')
  createRegistry(t, true)
  await t.resolveMatchSnapshot(printReified(path, {
    update: ['@isaacs/testing-bundledeps-parent'],
    save: false,
  }))
})

t.test('optional dependency failures', async t => {
  const cases = [
    'optional-dep-tgz-missing',
    'optional-metadep-tgz-missing',
    'optional-dep-preinstall-fail',
    'optional-dep-install-fail',
    'optional-dep-postinstall-fail',
    'optional-dep-allinstall-fail',
    'optional-metadep-preinstall-fail',
    'optional-metadep-install-fail',
    'optional-metadep-postinstall-fail',
    'optional-metadep-allinstall-fail',
  ]
  // t.plan(cases.length * 2)
  for (const c of cases) {
    await t.test(`${c} save=false`, async t => {
      createRegistry(t, true)
      await t.resolveMatchSnapshot(printReified(fixture(t, c),
        { update: true, save: false }))
    })
    // npm update --save
    await t.test(`${c} save=true`, async t => {
      createRegistry(t, true)
      await t.resolveMatchSnapshot(printReified(fixture(t, c),
        { update: true, save: true }))
    })
  }
})

t.test('failure to fetch prod dep is failure', async t => {
  createRegistry(t, true)
  t.rejects(printReified(fixture(t, 'prod-dep-tgz-missing')))
})

t.test('failing script means install failure, unless ignoreScripts', async t => {
  const cases = [
    'prod-dep-preinstall-fail',
    'prod-dep-install-fail',
    'prod-dep-postinstall-fail',
    'prod-dep-allinstall-fail',
  ]

  for (const c of cases) {
    await t.test(c, async t => {
      createRegistry(t, true)
      t.rejects(printReified(fixture(t, c)))
    })
    await t.test(`${c} --ignore-scripts`, async t => {
      createRegistry(t, true)
      await t.resolveMatchSnapshot(printReified(
        fixture(t, c), { ignoreScripts: true }))
    })
  }
})

t.test('link metadep', async t => {
  const cases = [
    'cli-750',
    'cli-750-fresh',
  ]
  for (const c of cases) {
    createRegistry(t, false)
    await t.test(c, async t => {
      t.resolveMatchSnapshot(printReified(fixture(t, c)))
    })
  }
})

t.test('warn on reifying deprecated dependency', t => {
  createRegistry(t, true)
  const a = newArb({
    path: fixture(t, 'deprecated-dep'),
    lockfileVersion: 1,
  })
  const check = warningTracker()
  return a.reify({ update: true }).then(() => t.match(check(), [
    [
      'warn',
      'deprecated',
      'mkdirp@0.5.3: Legacy versions of mkdirp are no longer supported. ' +
      'Please update to mkdirp 1.x. (Note that the API surface has changed ' +
      'to use Promises in 1.x.)',
    ],
  ]))
})

t.test('rollbacks', { buffered: false }, t => {
  t.test('fail retiring shallow nodes', t => {
    const path = fixture(t, 'testing-bundledeps-3')
    createRegistry(t, true)
    const a = newArb({ path, installStrategy: 'nested' })
    const expect = new Error('rename fail')
    const kRenamePath = Symbol.for('renamePath')
    const renamePath = a[kRenamePath]
    a[kRenamePath] = (from, to) => {
      a[kRenamePath] = renamePath
      failRename = expect
      return a[kRenamePath](from, to)
    }
    const kRollback = Symbol.for('rollbackRetireShallowNodes')
    const rollbackRetireShallowNodes = a[kRollback]
    let rolledBack = false
    a[kRollback] = er => {
      rolledBack = true
      failRename = null
      t.equal(er, expect)
      a[kRollback] = rollbackRetireShallowNodes
      return a[kRollback](er)
    }

    return t.rejects(a.reify({
      update: ['@isaacs/testing-bundledeps-parent'],
    }), expect).then(() => t.equal(rolledBack, true, 'rolled back'))
  })

  t.test('fail retiring nodes because rm fails after eexist', t => {
    const path = fixture(t, 'testing-bundledeps-3')
    createRegistry(t, true)
    const a = newArb({ path, installStrategy: 'nested' })
    const eexist = new Error('rename fail')
    eexist.code = 'EEXIST'
    const kRenamePath = Symbol.for('renamePath')
    const renamePath = a[kRenamePath]
    a[kRenamePath] = (from, to) => {
      a[kRenamePath] = renamePath
      failRename = eexist
      failRm = true
      return a[kRenamePath](from, to)
    }
    const kRollback = Symbol.for('rollbackRetireShallowNodes')
    const rollbackRetireShallowNodes = a[kRollback]
    let rolledBack = false
    a[kRollback] = er => {
      rolledBack = true
      failRename = new Error('some other error')
      failRm = false
      t.match(er, new Error('rm fail'))
      a[kRollback] = rollbackRetireShallowNodes
      return a[kRollback](er).then(er => {
        failRename = null
        return er
      }, er => {
        failRename = null
        throw er
      })
    }

    return t.rejects(a.reify({
      update: ['@isaacs/testing-bundledeps-parent'],
    }), new Error('rm fail'))
      .then(() => t.equal(rolledBack, true, 'rolled back'))
  })

  t.test('fail retiring node, but then rm fixes it', async t => {
    const path = fixture(t, 'testing-bundledeps-3')
    createRegistry(t, true)
    const a = newArb({ path, installStrategy: 'nested' })
    const eexist = new Error('rename fail')
    eexist.code = 'EEXIST'
    const kRenamePath = Symbol.for('renamePath')
    const renamePath = a[kRenamePath]
    a[kRenamePath] = (from, to) => {
      a[kRenamePath] = renamePath
      failRenameOnce = eexist
      return a[kRenamePath](from, to)
    }
    const kRollback = Symbol.for('rollbackRetireShallowNodes')
    const rollbackRetireShallowNodes = a[kRollback]
    a[kRollback] = er => {
      t.fail('should not roll back!')
      a[kRollback] = rollbackRetireShallowNodes
      return a[kRollback](er)
    }

    const tree = await a.reify({
      update: ['@isaacs/testing-bundledeps-parent'],
      save: false,
    })
    return printTree(tree)
  })

  t.test('fail retiring nodes because rm fails after enotempty', t => {
    const path = fixture(t, 'testing-bundledeps-3')
    createRegistry(t, true)
    const a = newArb({ path, installStrategy: 'nested' })
    const enotempty = new Error('rename fail')
    enotempty.code = 'ENOTEMPTY'
    const kRenamePath = Symbol.for('renamePath')
    const renamePath = a[kRenamePath]
    a[kRenamePath] = (from, to) => {
      a[kRenamePath] = renamePath
      failRename = enotempty
      failRm = true
      return a[kRenamePath](from, to)
    }
    const kRollback = Symbol.for('rollbackRetireShallowNodes')
    const rollbackRetireShallowNodes = a[kRollback]
    let rolledBack = false
    a[kRollback] = er => {
      rolledBack = true
      failRename = new Error('some other error')
      failRm = false
      t.match(er, new Error('rm fail'))
      a[kRollback] = rollbackRetireShallowNodes
      return a[kRollback](er).then(er => {
        failRename = null
        return er
      }, er => {
        failRename = null
        throw er
      })
    }

    return t.rejects(a.reify({
      update: ['@isaacs/testing-bundledeps-parent'],
    }), new Error('rm fail'))
      .then(() => t.equal(rolledBack, true, 'rolled back'))
  })

  t.test('fail retiring node with enotempty, but then rm fixes it', async t => {
    const path = fixture(t, 'testing-bundledeps-3')
    createRegistry(t, true)
    const a = newArb({ path, installStrategy: 'nested' })
    const enotempty = new Error('rename fail')
    enotempty.code = 'ENOTEMPTY'
    const kRenamePath = Symbol.for('renamePath')
    const renamePath = a[kRenamePath]
    a[kRenamePath] = (from, to) => {
      a[kRenamePath] = renamePath
      failRenameOnce = enotempty
      return a[kRenamePath](from, to)
    }
    const kRollback = Symbol.for('rollbackRetireShallowNodes')
    const rollbackRetireShallowNodes = a[kRollback]
    a[kRollback] = er => {
      t.fail('should not roll back!')
      a[kRollback] = rollbackRetireShallowNodes
      return a[kRollback](er)
    }

    const tree = await a.reify({
      update: ['@isaacs/testing-bundledeps-parent'],
      save: false,
    })
    return printTree(tree)
  })

  t.test('fail creating sparse tree', t => {
    t.teardown(() => failMkdir = null)
    const path = fixture(t, 'testing-bundledeps-3')
    createRegistry(t, true)
    const a = newArb({ path, installStrategy: 'nested' })
    const kCreateST = Symbol.for('createSparseTree')
    const createSparseTree = a[kCreateST]
    a[kCreateST] = () => {
      a[kCreateST] = createSparseTree
      failMkdir = new Error('poop')
      return a[kCreateST]()
    }
    const kRollback = Symbol.for('rollbackCreateSparseTree')
    const rollbackCreateSparseTree = a[kRollback]
    a[kRollback] = er => {
      t.match(er, new Error('poop'))
      a[kRollback] = rollbackCreateSparseTree
      return a[kRollback](er)
    }

    return t.rejects(a.reify({
      update: ['@isaacs/testing-bundledeps-parent'],
    }).then(() => 'it worked'), new Error('poop'))
  })

  t.test('fail rolling back from creating sparse tree', t => {
    failMkdir = null
    failRm = null
    const path = fixture(t, 'testing-bundledeps-3')
    createRegistry(t, true)
    const a = newArb({ path, installStrategy: 'nested' })

    const kCreateST = Symbol.for('createSparseTree')
    const kRetireShallowNodes = Symbol.for('retireShallowNodes')
    const retireShallowNodes = a[kRetireShallowNodes]
    a[kRetireShallowNodes] = async () => {
      a[kRetireShallowNodes] = retireShallowNodes
      await a[kRetireShallowNodes]()
      failRm = true
    }
    const createSparseTree = a[kCreateST]
    t.teardown(() => failMkdir = null)
    a[kCreateST] = () => {
      a[kCreateST] = createSparseTree
      failMkdir = new Error('poop')
      return a[kCreateST]()
    }
    const kRollback = Symbol.for('rollbackCreateSparseTree')
    const rollbackCreateSparseTree = a[kRollback]
    a[kRollback] = er => {
      t.match(er, new Error('poop'))
      a[kRollback] = rollbackCreateSparseTree
      return a[kRollback](er)
    }

    const check = warningTracker()
    return t.rejects(a.reify({
      update: ['@isaacs/testing-bundledeps-parent'],
    }).then(() => 'it worked'), new Error('poop'))
    // eslint-disable-next-line promise/always-return
      .then(() => {
        const warnings = check()
        t.equal(warnings.length, 2)
        t.match(warnings, [
          oldLockfileWarning,
          [
            'warn',
            'cleanup',
            'Failed to remove some directories',
            [[String, new Error('rm fail')]],
          ],
        ])
      })
      .then(() => failRm = false)
  })

  t.test('fail loading shrinkwraps and updating trees', t => {
    const path = fixture(t, 'shrinkwrapped-dep-no-lock-empty')
    createRegistry(t, true)
    const a = newArb({ path, installStrategy: 'nested' })
    const kLoadSW = Symbol.for('loadShrinkwrapsAndUpdateTrees')
    const loadShrinkwrapsAndUpdateTrees = a[kLoadSW]
    a[kLoadSW] = seen => {
      a[kLoadSW] = loadShrinkwrapsAndUpdateTrees
      const kDiff = Symbol.for('diffTrees')
      const diffTrees = a[kDiff]
      a[kDiff] = () => {
        a[kDiff] = diffTrees
        return Promise.reject(new Error('poop'))
      }
      return a[kLoadSW](seen)
    }
    const kRollback = Symbol.for('rollbackCreateSparseTree')
    const rollbackCreateSparseTree = a[kRollback]
    a[kRollback] = er => {
      t.match(er, new Error('poop'))
      a[kRollback] = rollbackCreateSparseTree
      return a[kRollback](er)
    }

    return t.rejects(a.reify(), new Error('poop'))
  })

  t.test('fail loading bundles and updating trees', t => {
    const path = fixture(t, 'two-bundled-deps')
    createRegistry(t, true)
    const a = newArb({ path, installStrategy: 'nested' })
    const kLoadBundles = Symbol.for('loadBundlesAndUpdateTrees')
    const loadBundlesAndUpdateTrees = a[kLoadBundles]
    a[kLoadBundles] = (depth, bundlesByDepth) => {
      const kRN = Symbol.for('reifyNode')
      const reifyNode = a[kRN]
      a[kRN] = () => {
        a[kRN] = reifyNode
        return Promise.reject(new Error('poop'))
      }
      a[kLoadBundles] = loadBundlesAndUpdateTrees
      return a[kLoadBundles](depth, bundlesByDepth)
    }
    return t.rejects(a.reify(), new Error('poop'))
  })

  t.test('fail unpacking new modules', t => {
    const path = fixture(t, 'two-bundled-deps')
    createRegistry(t, true)
    const a = newArb({ path, installStrategy: 'nested' })
    const kUnpack = Symbol.for('unpackNewModules')
    const unpackNewModules = a[kUnpack]
    a[kUnpack] = () => {
      const kReify = Symbol.for('reifyNode')
      const reifyNode = a[kReify]
      a[kReify] = () => {
        a[kReify] = reifyNode
        return Promise.reject(new Error('poop'))
      }
      a[kUnpack] = unpackNewModules
      return a[kUnpack]()
    }
    return t.rejects(a.reify(), new Error('poop'))
  })

  t.test('fail moving back retired unchanged', t => {
    const path = fixture(t, 'testing-bundledeps-3')
    createRegistry(t, true)
    const a = newArb({ path, installStrategy: 'nested' })
    const kMoveback = Symbol.for('moveBackRetiredUnchanged')

    const moveBackRetiredUnchanged = a[kMoveback]
    a[kMoveback] = () => {
      a[kMoveback] = moveBackRetiredUnchanged
      const kMoveContents = Symbol.for('moveContents')
      const moveContents = a[kMoveContents]
      a[kMoveContents] = () => {
        a[kMoveContents] = moveContents
        return Promise.reject(new Error('poop'))
      }
      return a[kMoveback]()
    }
    const kRollback = Symbol.for('rollbackMoveBackRetiredUnchanged')
    const rollbackMoveBackRetiredUnchanged = a[kRollback]
    a[kRollback] = er => {
      t.match(er, new Error('poop'))
      a[kRollback] = rollbackMoveBackRetiredUnchanged
      return a[kRollback](er)
    }
    return t.rejects(a.reify({
      update: ['@isaacs/testing-bundledeps-parent'],
    }), new Error('poop'))
  })

  t.test('fail removing retired and deleted nodes', t => {
    const path = fixture(t, 'testing-bundledeps-3')
    createRegistry(t, true)
    const a = newArb({ path, installStrategy: 'nested' })
    const kRemove = Symbol.for('removeTrash')
    const removeRetiredAndDeletedNodes = a[kRemove]
    a[kRemove] = () => {
      failRm = true
      a[kRemove] = removeRetiredAndDeletedNodes
      return a[kRemove]()
    }
    const check = warningTracker()

    return t.resolveMatchSnapshot(a.reify({
      update: ['@isaacs/testing-bundledeps-parent'],
      save: false,
      // eslint-disable-next-line promise/always-return
    }).then(tree => printTree(tree))).then(() => {
      const warnings = check()
      t.equal(warnings.length, 2)
      t.match(warnings, [
        oldLockfileWarning,
        [
          'warn',
          'cleanup',
          'Failed to remove some directories',
          [[String, new Error('rm fail')]],
        ],
      ])
    })
      .then(() => failRm = false)
  })

  t.end()
})

t.test('saving the ideal tree', t => {
  const kSaveIdealTree = Symbol.for('saveIdealTree')
  t.test('save=false', async t => {
    createRegistry(t, false)
    // doesn't actually do anything, just for coverage.
    // if it wasn't an early exit, it'd blow up and throw
    // an error though.
    const path = t.testdir()
    const a = newArb({ path })
    t.notOk(await a[kSaveIdealTree]({ save: false }))
  })

  t.test('save some stuff', t => {
    createRegistry(t, false)
    const pkg = {
      bundleDependencies: ['a', 'b', 'c'],
      dependencies: {
        a: 'git+ssh://git@github.com:foo/bar#baz',
        b: '',
        d: 'npm:c@1.x <1.9.9',
        e: '*',
        f: 'git+https://user:pass@github.com/baz/quux#asdf',
        g: '',
        h: '~1.2.3',
      },
      devDependencies: {
        c: `git+ssh://git@githost.com:a/b/c.git#master`,
      },
      workspaces: [
        'e',
      ],
    }

    const npa = require('npm-package-arg')
    const kResolvedAdd = Symbol.for('resolvedAdd')
    const path = t.testdir({
      'package.json': JSON.stringify(pkg),
      e: {
        'package.json': JSON.stringify({ name: 'e' }),
      },
      node_modules: {
        e: t.fixture('symlink', '../e'),
      },
    })
    const a = newArb({ path })
    const hash = '71f3ccfefba85d2048484569dba8c1829f6f41d7'
    return a.loadActual().then(tree => Shrinkwrap.load({ path }).then(meta => {
      tree.meta = meta
      meta.add(tree)
      return tree
    })).then(async tree => {
      // saving swaps the ideal tree onto the actual tree
      a.idealTree = tree

      // simulated child nodes
      // Note: these all show up as "extraneous" in the lockfile,
      // because we don't do the calcDepFlags step in this simulation,
      // but since we're only testing the saving step, that's fine.
      new Node({
        name: 'a',
        resolved: `git+ssh://git@github.com:foo/bar#${hash}`,
        parent: tree,
        pkg: {},
      })
      new Node({
        name: 'b',
        resolved: 'https://registry.npmjs.org/b/-/b-1.2.3.tgz',
        pkg: { version: '1.2.3', name: 'b' },
        parent: tree,
      })
      new Node({
        name: 'c',
        resolved: `git+ssh://git@githost.com:a/b/c.git#${hash}`,
        parent: tree,
        pkg: {},
      })
      new Node({
        name: 'd',
        resolved: 'https://registry.npmjs.org/c/-/c-1.2.3.tgz',
        pkg: {
          name: 'c',
          version: '1.2.3',
        },
        parent: tree,
      })
      new Node({
        name: 'f',
        resolved: `git+https://user:pass@github.com/baz/quux#${hash}`,
        pkg: {
          name: 'f',
          version: '1.2.3',
        },
        parent: tree,
      })
      new Node({
        name: 'g',
        resolved: 'https://registry.npmjs.org/g/-/g-1.2.3.tgz',
        pkg: {
          name: 'g', // no version, somehow
        },
        parent: tree,
      })
      new Node({
        name: 'h',
        resolved: 'https://registry.npmjs.org/h/-/h-1.2.3.tgz',
        pkg: {
          name: 'h',
          version: '1.2.3',
        },
        parent: tree,
      })

      const target = new Node({
        name: 'e',
        pkg: {
          name: 'e',
        },
        path: resolve(tree.path, 'e'),
        fsParent: tree,
      })
      new Link({
        name: 'e',
        realpath: target.path,
        path: resolve(tree.path, 'node_modules/e'),
        resolved: 'file:../e',
        pkg: {
          name: 'e',
        },
      })

      a[kResolvedAdd] = [
        npa('a@git+ssh://git@github.com:foo/bar#baz'),
        npa('b'),
        npa('d@npm:c@1.x <1.9.9'),
        npa('c@git+ssh://git@githost.com:a/b/c.git#master'),
        npa('e'),
        npa('f@git+https://user:pass@github.com/baz/quux#asdf'),
        npa('g'),
        npa('h@~1.2.3'),
      ].map(spec => Object.assign(spec, { tree }))

      // NB: these are all going to be marked as extraneous, because we're
      // skipping the actual buildIdealTree step that flags them properly
      return a[kSaveIdealTree]({})
      // eslint-disable-next-line promise/always-return
    }).then(saved => {
      t.ok(saved, 'true, because it was saved')
      t.matchSnapshot(require(path + '/package-lock.json'), 'lock after save')
      t.strictSame(require(path + '/package.json'), {
        bundleDependencies: ['a', 'b', 'c'],
        dependencies: {
          a: 'github:foo/bar#baz',
          b: '^1.2.3',
          d: 'npm:c@1.x <1.9.9',
          e: '*',
          f: 'git+https://user:pass@github.com/baz/quux.git#asdf',
          g: '*',
          h: '~1.2.3',
        },
        workspaces: [
          'e',
        ],
        devDependencies: {
          c: 'git+ssh://git@githost.com:a/b/c.git#master',
        },
      })
    })
  })

  t.end()
})

t.test('scoped registries', async t => {
  const path = t.testdir()

  // TODO
  // this is a very artificial test that is setting a lot of internal things
  // up so that we assert that the intended behavior of sending right
  // resolved data for pacote.extract is working as intended, alternatively
  // we might prefer to replace this with a proper parallel alternative
  // registry server so that we can have more of an integration test instead
  let sawPacoteExtract = false
  const pacote = {
    extract: res => {
      sawPacoteExtract = true
      t.matchSnapshot(
        res,
        'should preserve original resolved value'
      )
      return true
    },
  }
  const ArboristMock = t.mock('../../lib/arborist', {
    ...mocks,
    pacote,
  })
  const a = new ArboristMock({
    audit: false,
    path,
    cache: path,
  })
  const kReify = Symbol.for('reifyNode')
  a.addTracker('reify')
  a.idealTree = new Node({ path })

  const node = new Node({
    name: '@ruyadorno/theoretically-private-pkg',
    resolved: 'https://npm.pkg.github.com/@ruyadorno/' +
      'theoretically-private-pkg/-/theoretically-private-pkg-1.2.3.tgz',
    pkg: { version: '1.2.3', name: '@ruyadorno/theoretically-private-pkg' },
    parent: a.idealTree,
  })
  await a[kReify](node)
  t.equal(sawPacoteExtract, true, 'saw pacote extraction')
})

t.test('bin links adding and removing', t => {
  const path = t.testdir({
    'package.json': JSON.stringify({}),
  })
  const rbin = resolve(path, 'node_modules/.bin/rimraf')
  return reify(path, { add: ['rimraf@2.7.1'] })
    .then(() => fs.statSync(rbin)) // should be there
    .then(() => reify(path, { rm: ['rimraf'] }))
    .then(() => t.throws(() => fs.statSync(rbin))) // should be gone
})

t.test('global style', t => {
  const path = t.testdir()
  createRegistry(t, true)
  const nm = resolve(path, 'node_modules')
  const rbinPart = '.bin/rimraf' +
    (process.platform === 'win32' ? '.cmd' : '')
  const rbin = resolve(nm, rbinPart)
  return reify(path, { add: ['rimraf@2'], installStrategy: 'shallow' })
    .then(() => fs.statSync(rbin))
    .then(() => t.strictSame(fs.readdirSync(nm).sort(), ['.bin', '.package-lock.json', 'rimraf']))
})

t.test('global', async t => {
  const isWindows = process.platform === 'win32'

  const path = t.testdir({ lib: {} })
  const lib = resolve(path, 'lib')
  const nm = resolve(lib, 'node_modules')

  const binTarget = isWindows ? lib : resolve(path, 'bin')
  const rimrafBin = resolve(binTarget, isWindows ? 'rimraf.cmd' : 'rimraf')
  const semverBin = resolve(binTarget, isWindows ? 'semver.cmd' : 'semver')

  await t.test('add rimraf', async t => {
    createRegistry(t, true)
    await reify(lib, { add: ['rimraf@2'], global: true })
      .then(() => fs.statSync(rimrafBin))
      .then(() => t.strictSame(fs.readdirSync(nm), ['rimraf']))
  })

  await t.test('add semver', async t => {
    createRegistry(t, true)
    await reify(lib, { add: ['semver@6.3.0'], global: true })
      .then(() => fs.statSync(rimrafBin))
      .then(() => fs.statSync(semverBin))
      .then(() => t.strictSame(fs.readdirSync(nm).sort(), ['rimraf', 'semver']))
  })

  await t.test('remove semver', async t => {
    createRegistry(t, false)
    await reify(lib, { rm: ['semver'], global: true })
      .then(() => fs.statSync(rimrafBin))
      .then(() => t.throws(() => fs.statSync(semverBin)))
      .then(() => t.strictSame(fs.readdirSync(nm), ['rimraf']))
  })

  await t.test('remove rimraf', async t => {
    createRegistry(t, false)
    await reify(lib, { rm: ['rimraf'], global: true })
      .then(() => t.throws(() => fs.statSync(rimrafBin)))
      .then(() => t.throws(() => fs.statSync(semverBin)))
      .then(() => t.strictSame(fs.readdirSync(nm), []))
  })

  await t.test('add without bin links', async t => {
    createRegistry(t, true)
    await reify(lib, { add: ['rimraf@2'], global: true, binLinks: false })
      .then(() => t.throws(() => fs.statSync(rimrafBin)))
      .then(() => t.throws(() => fs.statSync(semverBin)))
      .then(() => t.strictSame(fs.readdirSync(nm), ['rimraf']))
  })
})

t.test('workspaces', async t => {
  await t.test('reify simple-workspaces', async t => {
    createRegistry(t, false)
    await t.resolveMatchSnapshot(printReified(fixture(t, 'workspaces-simple')), 'should reify simple workspaces')
  })

  await t.test('reify workspaces omit dev dependencies', async t => {
    const runCase = async (t, opts) => {
      const path = fixture(t, 'workspaces-conflicting-dev-deps')
      const rootAjv = resolve(path, 'node_modules/ajv/package.json')
      const ajvOfPkgA = resolve(path, 'a/node_modules/ajv/package.json')
      const ajvOfPkgB = resolve(path, 'b/node_modules/ajv/package.json')

      t.equal(fs.existsSync(rootAjv), true, 'root ajv exists')
      t.equal(fs.existsSync(ajvOfPkgA), true, 'ajv under package a node_modules exists')
      t.equal(fs.existsSync(ajvOfPkgB), true, 'ajv under package a node_modules exists')

      await reify(path, { omit: ['dev'], ...opts })

      return {
        root: { exists: () => fs.existsSync(rootAjv) },
        a: { exists: () => fs.existsSync(ajvOfPkgA) },
        b: { exists: () => fs.existsSync(ajvOfPkgB) },
      }
    }

    await t.test('default', async t => {
      createRegistry(t, false)
      const { root, a, b } = await runCase(t)
      t.equal(root.exists(), false, 'root')
      t.equal(a.exists(), false, 'a')
      t.equal(b.exists(), false, 'b')
    })

    await t.test('workspaces only', async t => {
      createRegistry(t, false)
      const { root, a, b } = await runCase(t, { workspaces: ['a'] })
      t.equal(root.exists(), true, 'root')
      t.equal(a.exists(), false, 'a')
      t.equal(b.exists(), true, 'b')
    })

    await t.test('workspaces + root', async t => {
      createRegistry(t, false)
      const { root, a, b } = await runCase(t, { workspaces: ['a'], includeWorkspaceRoot: true })
      t.equal(root.exists(), false, 'root')
      t.equal(a.exists(), false, 'a')
      t.equal(b.exists(), true, 'b')
    })

    await t.test('disable workspaces', async t => {
      createRegistry(t, false)
      const { root, a, b } = await runCase(t, { workspacesEnabled: false })
      t.equal(root.exists(), false, 'root')
      t.equal(a.exists(), true, 'a')
      t.equal(b.exists(), true, 'b')
    })
  })

  await t.test('reify workspaces lockfile', async t => {
    const path = fixture(t, 'workspaces-simple')
    createRegistry(t, false)
    await reify(path)
    t.matchSnapshot(require(path + '/package-lock.json'), 'should lock workspaces config')
  })

  await t.test('reify workspaces with overrides', async t => {
    const path = fixture(t, 'workspaces-with-overrides')
    createRegistry(t, true)
    await reify(path, { workspacesEnabled: true, workspaces: ['ws'] })
    t.matchSnapshot(require(path + '/package-lock.json'), 'should retain override version (4.1.3)')
  })

  await t.test('reify workspaces bin files', t => {
    const path = fixture(t, 'workspaces-link-bin')
    createRegistry(t, false)

    const bins = [
      resolve(path, 'node_modules/.bin/a'),
      resolve(path, 'node_modules/.bin/b'),
    ]

    const checkBin = () => {
      for (const bin of bins) {
        if (process.platform === 'win32') {
          t.ok(fs.statSync(bin + '.cmd').isFile(), 'created shim')
        } else {
          t.ok(fs.lstatSync(bin).isSymbolicLink(), 'created symlink')
        }
      }
    }

    return t.resolveMatchSnapshot(printReified(path, {}))
      .then(checkBin)
  })

  await t.test('reify from an actual loaded workspace env', async t => {
    createRegistry(t, false)
    await t.resolveMatchSnapshot(
      printReified(fixture(t, 'workspaces-non-simplistic')),
      'should not clean up entire nm folder for no reason'
    )
  })

  await t.test('add new workspaces dep', async t => {
    createRegistry(t, true)
    const path = fixture(t, 'workspaces-add-new-dep')
    await reify(path)
    t.matchSnapshot(require(path + '/package-lock.json'), 'should update package-lock with new added dep')
  })

  await t.test('root as-a-workspace', async t => {
    createRegistry(t, true)
    const path = fixture(t, 'workspaces-root-linked')
    await reify(path)
    t.matchSnapshot(require(path + '/package-lock.json'), 'should produce expected package-lock file')
  })
})

t.test('reify from old package-lock with bins', async t => {
  const path = fixture(t, 'old-package-lock-with-bins')
  createRegistry(t, true)
  await reify(path, {})

  t.matchSnapshot(
    require(resolve(path, 'package-lock.json')),
    'should add bins entry to package-lock packages entry'
  )

  const bin = resolve(path, 'node_modules/.bin/ruy')
  if (process.platform === 'win32') {
    t.ok(fs.statSync(`${bin}.cmd`).isFile(), 'created shim')
  } else {
    t.ok(fs.lstatSync(bin).isSymbolicLink(), 'created symlink')
  }
})

t.test('fail early if bins will conflict', async t => {
  const path = t.testdir({
    lib: {
      'semver.cmd': 'this is not the linked bin',
    },
    bin: {
      semver: 'this is not the linked bin',
    },
  })
  createRegistry(t, true)
  const arb = newArb({
    global: true,
    path: `${path}/lib`,
  })
  arb.rebuild = async () => {
    throw Object.assign(new Error('nope'), { code: 'NOPE' })
  }
  await t.rejects(arb.reify({ add: ['semver'] }), { code: 'EEXIST' })
})

t.test('add a dep present in the tree, with v1 shrinkwrap', async t => {
  // https://github.com/npm/arborist/issues/70
  const path = fixture(t, 'old-package-lock')
  createRegistry(t, true)
  await reify(path, { add: ['wrappy'] })
  t.matchSnapshot(fs.readFileSync(path + '/package.json', 'utf8'))
})

t.test('store files with a custom indenting', async t => {
  const tabIndentedPackageJson =
    fs.readFileSync(
      resolve(__dirname, '../fixtures/tab-indented-package-json/package.json'),
      'utf8'
    ).replace(/\r\n/g, '\n')
  const path = t.testdir({
    'package.json': tabIndentedPackageJson,
  })
  createRegistry(t, true)
  await reify(path)
  t.matchSnapshot(fs.readFileSync(path + '/package.json', 'utf8'))
  t.matchSnapshot(fs.readFileSync(path + '/package-lock.json', 'utf8'))
})

t.test('do not rewrite valid package.json shorthands', async t => {
  const path = fixture(t, 'package-json-shorthands')
  createRegistry(t, false)
  await reify(path)
  const res = require(path + '/package.json')
  t.equal(res.bin, './index.js', 'should not rewrite bin property')
  t.equal(res.funding, 'https://example.com', 'should not rewrite funding')
})

t.test('modules bundled by the root should be installed', async t => {
  const path = fixture(t, 'root-bundler')
  createRegistry(t, false)
  await reify(path)
  t.matchSnapshot(fs.readFileSync(path + '/node_modules/child/package.json', 'utf8'))
})

t.test('add a new pkg to a prefix that needs to be mkdirpd', async t => {
  await t.test('not dry run', async t => {
    const path = resolve(t.testdir(), 'missing/path/to/root')
    createRegistry(t, true)
    const tree = await reify(path, { add: ['abbrev'] })
    t.matchSnapshot(
      printTree(tree),
      'should output a successful tree in mkdirp folder'
    )
    t.matchSnapshot(
      fs.readFileSync(path + '/package.json', 'utf8'),
      'should place expected package.json file into place'
    )
    t.matchSnapshot(
      fs.readFileSync(path + '/package-lock.json', 'utf8'),
      'should place expected lockfile file into place'
    )
  })

  await t.test('dry run scenarios', async t => {
    const path = resolve(t.testdir(), 'missing/path/to/root')
    createRegistry(t, false)

    try {
      await reify(path, { add: ['abbrev'], dryRun: true })
    } catch (e) {
      // TODO: should this be throwing?
    }

    t.throws(() =>
      fs.statSync(resolve(path, 'node_modules')), { code: 'ENOENT' })

    t.throws(() =>
      fs.statSync(resolve(path, 'package.json')), { code: 'ENOENT' })
  })
})

t.test('do not delete root-bundled deps in global update', async t => {
  const path = t.testdir()
  createRegistry(t, false)
  const file = resolve(__dirname, '../fixtures/bundle.tgz')
  await reify(path, { global: true, add: [`file:${file}`] })
  const depPJ = resolve(path, 'node_modules/bundle/node_modules/dep/package.json')
  t.matchSnapshot(fs.readFileSync(depPJ, 'utf8'), 'after first install')
  await reify(path, { global: true, add: [`file:${file}`] })
  t.matchSnapshot(fs.readFileSync(depPJ, 'utf8'), 'after second install')
})

t.test('do not excessively duplicate bundled metadeps', async t => {
  const path = fixture(t, 'bundle-metadep-duplication')
  createRegistry(t, true)
  const tree = await reify(path)
  const hidden = path + '/node_modules/.package-lock.json'
  t.matchSnapshot(fs.readFileSync(hidden, 'utf8'), 'hidden lockfile')
  const plock = path + '/package-lock.json'
  t.matchSnapshot(fs.readFileSync(plock, 'utf8'), 'normal lockfile')
  t.matchSnapshot(printTree(tree), 'tree')
})

t.test('do not reify root when root matches duplicated metadep', async t => {
  const path = fixture(t, 'test-root-matches-metadep')
  createRegistry(t, true)
  await reify(path)
  fs.statSync(path + '/do-not-delete-this-file')
})

t.test('reify properly with all deps when lockfile is ancient', async t => {
  const path = fixture(t, 'sax')
  createRegistry(t, true)
  const tree = await reify(path)
  t.matchSnapshot(printTree(tree))
  fs.statSync(path + '/node_modules/tap/node_modules/.bin/nyc')
})

t.test('add multiple pkgs in a specific order', async t => {
  const path = t.testdir({
    'package.json': JSON.stringify({
      name: 'multiple-pkgs',
    }),
  })
  createRegistry(t, true)
  await reify(path, { add: ['wrappy', 'abbrev'] })
  t.matchSnapshot(
    fs.readFileSync(path + '/package.json', 'utf8'),
    'should alphabetically sort dependencies'
  )
  await reify(path, { add: ['once'] })
  t.matchSnapshot(
    fs.readFileSync(path + '/package.json', 'utf8'),
    'should alphabetically sort new added dep'
  )
})

t.test('save complete lockfile on update-all', async t => {
  const path = t.testdir({
    'package.json': JSON.stringify({
      name: 'save-package-lock-after-update-test',
      version: '1.0.0',
    }),
  })
  createRegistry(t, true)
  // install the older version first
  const lock = () => fs.readFileSync(`${path}/package-lock.json`, 'utf8')
  await reify(path, { add: ['abbrev@1.0.4'] })
  t.matchSnapshot(lock(), 'should have abbrev 1.0.4')
  await reify(path, { update: true, save: false })
  t.matchSnapshot(lock(), 'should update, but not drop root metadata')
})

t.test('dry-run update does not save lockfiles', async t => {
  const path = t.testdir({
    'package.json': JSON.stringify({
      name: 'dry-run-update-lockfile-test',
      version: '1.0.0',
    }),
  })
  createRegistry(t, true)
  await reify(path, { add: ['abbrev@1.0.4'] })

  const lock = filename => fs.readFileSync(resolve(path, filename), 'utf8')
  const packageLock = lock('package-lock.json')
  const hiddenLock = lock('node_modules/.package-lock.json')

  await reify(path, { update: true, dryRun: true, save: false })

  t.equal(lock('package-lock.json'), packageLock, 'package-lock.json unchanged')
  t.equal(lock('node_modules/.package-lock.json'), hiddenLock, 'hidden lockfile unchanged')
})

t.test('save proper lockfile with bins when upgrading lockfile', async t => {
  for (const complete of [true, false]) {
    await t.test(`complete=${complete}`, async t => {
      const path = fixture(t, 'semver-installed-with-old-package-lock')
      createRegistry(t, true)
      const lock = () => fs.readFileSync(`${path}/package-lock.json`, 'utf8')
      await reify(path, { complete })
      t.matchSnapshot(lock(), 'should upgrade, with bins in place')
    })
  }
})

t.test('rollback if process is terminated during reify process', async t => {
  const onExit = require('../../lib/signal-handling.js')
  // mock the process so we don't have to kill this test
  // copy-pasta from signal-handling test
  const EE = require('node:events')
  const proc = onExit.process = new class MockProcess extends EE {
    constructor () {
      super()
      this.pid = process.pid
    }

    // ignore the beforeExit handler, since we won't actually let that happen
    once (ev, ...args) {
      if (ev !== 'beforeExit') {
        return super.once(ev, ...args)
      }
    }

    kill (pid, signal) {
      if (pid !== this.pid) {
        throw Object.assign(new Error('wrong pid sent to kill() method'), {
          expect: this.pid,
          actual: pid,
        })
      }
      return new Promise(res => process.nextTick(() => {
        this.emit(signal)
        res()
      }))
    }
  }()

  t.teardown(() => onExit.process = process)

  const methods = [
    Symbol.for('retireShallowNodes'),
    Symbol.for('createSparseTree'),
    Symbol.for('loadShrinkwrapsAndUpdateTrees'),
    Symbol.for('loadBundlesAndUpdateTrees'),
    Symbol.for('unpackNewModules'),
    Symbol.for('moveBackRetiredUnchanged'),
    Symbol.for('build'),
    Symbol.for('removeTrash'),
  ]

  t.plan(methods.length)
  for (const method of methods) {
    t.test(Symbol.keyFor(method), t => {
      const orig = Arborist.prototype[method]
      t.teardown(() => Arborist.prototype[method] = orig)
      Arborist.prototype[method] = async function (...args) {
        return Promise.resolve(orig.call(this, ...args)).then(() =>
          proc.kill(process.pid, 'SIGINT'))
      }
      const path = t.testdir({
        'package.json': JSON.stringify({ dependencies: { abbrev: '' } }),
      })

      t.test('clean install', async t => {
        createRegistry(t, true)
        const arb = newArb({ path })
        // starting from an empty folder, ends up empty
        await t.rejects(arb.reify(), {
          message: 'process terminated',
          signal: 'SIGINT',
        })
        // if it fails while removing trash well... it's already over.
        // we can't actually roll back at that point, because "trash" is gone
        if (method !== Symbol.for('removeTrash')) {
          t.throws(() => fs.statSync(path + '/node_modules'), { code: 'ENOENT' })
        }
      })

      t.test('upgrade install', async t => {
        // ensure that we end up with the same thing we started with,
        // if it was something other than we're installing
        const a = resolve(path, 'node_modules/abbrev')
        fs.mkdirSync(a, { recursive: true })
        const pj = resolve(a, 'package.json')
        fs.writeFileSync(pj, JSON.stringify({
          name: 'abbrev',
          version: '0.0.0',
        }))
        createRegistry(t, true)
        const arb = newArb({ path })
        await t.rejects(arb.reify({ add: ['abbrev@1.1.1'] }), {
          message: 'process terminated',
          signal: 'SIGINT',
        })

        // if it fails while removing trash well... it's already over.
        // we can't actually roll back at that point, because "trash" is gone
        if (method !== Symbol.for('removeTrash')) {
          t.same(JSON.parse(fs.readFileSync(pj, 'utf8')), {
            name: 'abbrev',
            version: '0.0.0',
          })
        }
      })

      t.end()
    })
  }
})

t.test('warn and correct if damaged data in lockfile', async t => {
  const path = t.testdir({
    'package.json': JSON.stringify({
      dependencies: {
        abbrev: '',
      },
    }),
    'package-lock.json': JSON.stringify({
      name: 'garbage-in-reify-tree',
      lockfileVersion: 2,
      requires: true,
      packages: {
        '': {
          dependencies: {
            abbrev: '',
          },
        },
        'node_modules/abbrev': {
          integrity: 'sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q==',
        },
      },
      dependencies: {
        abbrev: {
          integrity: 'sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q==',
        },
      },
    }),
  })

  await t.test('first pass logs', async t => {
    const getLogs = warningTracker()
    createRegistry(t, false)
    await reify(path)
    t.strictSame(getLogs(), [
      [
        'warn',
        'reify',
        'invalid or damaged lockfile detected\n' +
        'please re-try this operation once it completes\n' +
        'so that the damage can be corrected, or perform\n' +
        'a fresh install with no lockfile if the problem persists.',
      ],
    ], 'got warnings')
    t.matchSnapshot(fs.readFileSync(path + '/package-lock.json', 'utf8'), '"fixed" lockfile')
  })

  await t.test('second pass just does the right thing', async t => {
    const getLogs = warningTracker()
    createRegistry(t, true)
    await reify(path)
    t.strictSame(getLogs(), [], 'no warnings this time')
    t.matchSnapshot(fs.readFileSync(path + '/package-lock.json', 'utf8'), 'actually fixed lockfile')
  })
})

t.test('properly update one module when multiple are present', async t => {
  const path = t.testdir({})
  createRegistry(t, true)
  const abbrevpj = resolve(path, 'node_modules/abbrev/package.json')
  const oncepj = resolve(path, 'node_modules/once/package.json')

  await newArb({ path, global: true }).reify({ add: ['abbrev@1.0.4'] })
  t.equal(JSON.parse(fs.readFileSync(abbrevpj, 'utf8')).version, '1.0.4')
  t.throws(() => fs.readFileSync(oncepj, 'utf8'), 'once should not be yet')

  await newArb({ path, global: true }).reify({ add: ['once'] })
  t.equal(JSON.parse(fs.readFileSync(abbrevpj, 'utf8')).version, '1.0.4')
  t.equal(JSON.parse(fs.readFileSync(oncepj, 'utf8')).version, '1.4.0')

  await newArb({ path, global: true }).reify({ update: ['abbrev'] })
  t.equal(JSON.parse(fs.readFileSync(abbrevpj, 'utf8')).version, '1.1.1')
  t.equal(JSON.parse(fs.readFileSync(oncepj, 'utf8')).version, '1.4.0')
})

t.test('saving should not replace file: dep with version', async t => {
  // need to run in the path, as if the user typed `npm i file:abbrev`
  const cwd = process.cwd()
  t.teardown(() => process.chdir(cwd))
  const path = t.testdir({
    abbrev: {
      'package.json': JSON.stringify({
        name: 'abbrev',
        version: '1.1.1',
      }),
    },
    'package.json': JSON.stringify({}),
  })
  createRegistry(t, false)
  process.chdir(path)

  const pj = resolve(path, 'package.json')
  await newArb({ path, save: true }).reify({ add: ['file:abbrev'] })
  const pj1 = fs.readFileSync(pj, 'utf8')
  t.equal(JSON.parse(pj1).dependencies.abbrev, 'file:abbrev',
    'saved as file: spec after file: install')
  await newArb({ path, save: true }).reify({ add: ['abbrev'] })
  const pj2 = fs.readFileSync(pj, 'utf8')
  t.equal(JSON.parse(pj2).dependencies.abbrev, 'file:abbrev',
    'still a file: spec after a bare name install')
})

t.test('filtered reification in workspaces', async t => {
  const path = t.testdir({
    'package.json': JSON.stringify({
      workspaces: [
        'apps/*',
        'packages/*',
      ],
    }),
    // 'apps' comes ahead of 'node_modules' alphabetically,
    // included in the test so that we ensure that the copy
    // over works properly in both directions.
    apps: {
      x: {
        'package.json': JSON.stringify({
          name: 'x',
          version: '1.2.3',
        }),
      },
    },
    // this is going to be a workspace that we switch to in the ideal
    // tree, but the actual tree will still be lagging behind.
    foo: {
      x: {
        'package.json': JSON.stringify({
          name: 'x',
          version: '1.2.3',
        }),
      },
    },
    packages: {
      a: {
        'package.json': JSON.stringify({
          name: 'a',
          version: '1.2.3',
          dependencies: {
            once: '',
            wrappy: '1.0.2',
          },
        }),
      },
      b: {
        'package.json': JSON.stringify({
          name: 'b',
          version: '1.2.3',
          dependencies: {
            abbrev: '',
          },
        }),
      },
      c: {
        'package.json': JSON.stringify({
          name: 'c',
          version: '1.2.3',
          dependencies: {
            wrappy: '1.0.0',
          },
        }),
      },
    },
  })
  createRegistry(t, true)

  const hiddenLock = resolve(path, 'node_modules/.package-lock.json')

  t.matchSnapshot(await printReified(path, { workspaces: ['c'] }),
    'reify the c workspace only')

  t.matchSnapshot(fs.readFileSync(hiddenLock, 'utf8'),
    'hidden lockfile - c')

  t.matchSnapshot(await printReified(path, { workspaces: ['x'] }),
    'reify the x workspace after reifying c')

  t.matchSnapshot(fs.readFileSync(hiddenLock, 'utf8'),
    'hidden lockfile - c, x')

  t.matchSnapshot(await printReified(path, { workspaces: ['a'] }),
    'reify the a workspace after reifying c')

  t.matchSnapshot(fs.readFileSync(hiddenLock, 'utf8'),
    'hidden lockfile - c, x, a')

  // now remove the a workspace, and move x to a new target location,
  // but we will not reify the apps->foo change.
  fs.writeFileSync(`${path}/package.json`, JSON.stringify({
    workspaces: [
      'foo/*',
      'packages/b',
      'packages/c',
    ],
  }))

  t.matchSnapshot(await printReified(path, { workspaces: ['a', 'c'] }),
    'reify the workspaces, removing a and leaving c and old x in place')

  t.matchSnapshot(fs.readFileSync(hiddenLock, 'utf8'),
    'hidden lockfile - c, old x, removed a')

  // Same thing, BUT, we now have a reason to already have the foo/x
  // in fsChildren.  fully reify with this package.json, then change
  // the root package.json back to the test above.  This exercises an
  // edge case where the actual and ideal trees are somewhat out of sync,
  // by virtue of the actualTree being generated with a package.json
  // which has changed, but where only PART of the idealTree is reified
  // over it.
  fs.writeFileSync(`${path}/package.json`, JSON.stringify({
    dependencies: {
      foox: 'file:foo/x',
    },
    workspaces: [
      'apps/x',
      'packages/a',
      'packages/c',
    ],
  }))
  await reify(path)
  fs.writeFileSync(`${path}/package.json`, JSON.stringify({
    workspaces: [
      'foo/*',
      'packages/b',
      'packages/c',
    ],
  }))
  t.matchSnapshot(await printReified(path, { workspaces: ['a', 'c'] }),
    'reify the workspaces, foo/x linked, c, old x, removed a')

  t.matchSnapshot(fs.readFileSync(hiddenLock, 'utf8'),
    'hidden lockfile - foo/x linked, c, old x, removed a')
})

// Regression for https://github.com/npm/cli/issues/5463: a workspace whose directory has been deleted should not leave behind an extraneous entry (or a lingering reference in the root's workspaces array) in package-lock.json after `npm install`.
t.test('removed workspace is pruned from package-lock.json', async t => {
  const setup = () => {
    const path = t.testdir({
      'package.json': JSON.stringify({
        name: 'remove-ws',
        version: '1.0.0',
        workspaces: ['packages/a', 'packages/b'],
      }),
      packages: {
        a: {
          'package.json': JSON.stringify({ name: 'a', version: '1.0.0' }),
        },
        b: {
          'package.json': JSON.stringify({ name: 'b', version: '1.0.0' }),
        },
      },
    })
    return path
  }

  // The lockfile's root.workspaces array mirrors package.json verbatim and is intentionally not mutated here, so we only assert that orphan package/link entries are dropped.
  const assertClean = (t, path, label) => {
    const lock = JSON.parse(fs.readFileSync(`${path}/package-lock.json`, 'utf8'))
    t.notOk(lock.packages['packages/b'],
      `${label}: packages/b entry removed from lockfile`)
    t.notOk(lock.packages['node_modules/b'],
      `${label}: node_modules/b link removed from lockfile`)
    t.notOk(lock.dependencies && lock.dependencies.b,
      `${label}: dependencies.b removed from legacy lockfile`)
  }

  for (const strategy of ['hoisted', 'linked']) {
    t.test(`${strategy} strategy, package.json kept stale`, async t => {
      const path = setup()
      createRegistry(t, false)
      await reify(path, { installStrategy: strategy })
      // Remove only the directory, leave package.json's workspaces array alone.
      fs.rmSync(`${path}/packages/b`, { recursive: true, force: true })
      await reify(path, { installStrategy: strategy })
      assertClean(t, path, `${strategy}/keep-pj`)
    })

    t.test(`${strategy} strategy, package.json updated`, async t => {
      const path = setup(strategy)
      createRegistry(t, false)
      await reify(path, { installStrategy: strategy })
      fs.rmSync(`${path}/packages/b`, { recursive: true, force: true })
      fs.writeFileSync(`${path}/package.json`, JSON.stringify({
        name: 'remove-ws',
        version: '1.0.0',
        workspaces: ['packages/a'],
      }))
      await reify(path, { installStrategy: strategy })
      assertClean(t, path, `${strategy}/clean-pj`)
    })
  }
})

// Regression for https://github.com/npm/cli/issues/9433: a file: dependency
// that itself has a file: dependency leaves a nested extraneous fsChild. That
// entry must stay in package-lock.json, otherwise `npm ci` reports the nested
// dep as missing and refuses to install.
t.test('nested file: dep keeps extraneous fsChild in package-lock.json', async t => {
  const path = t.testdir({
    'package.json': JSON.stringify({
      name: 'c',
      version: '1.0.0',
      private: true,
      dependencies: { a: 'file:lib/a', b: 'file:lib/b' },
    }),
    lib: {
      a: { 'package.json': JSON.stringify({ name: 'a', version: '1.0.0', private: true }) },
      b: {
        'package.json': JSON.stringify({
          name: 'b',
          version: '1.0.0',
          private: true,
          dependencies: { a: 'file:lib/a' },
        }),
        lib: {
          a: { 'package.json': JSON.stringify({ name: 'a', version: '1.0.0', private: true }) },
        },
      },
    },
  })
  createRegistry(t, false)
  await reify(path)

  const lock = JSON.parse(fs.readFileSync(`${path}/package-lock.json`, 'utf8'))
  t.match(lock.packages['lib/b/lib/a'], { version: '1.0.0', extraneous: true },
    'nested file: dep is recorded as an extraneous entry in the lockfile')

  // Mirror the `npm ci` sync check: every node in the ideal tree built from
  // package.json must be present in the virtual tree loaded from the lockfile.
  const virtual = newArb({ path })
  await virtual.loadVirtual()
  const virtualInventory = new Map(virtual.virtualTree.inventory)
  const ideal = newArb({ path })
  await ideal.buildIdealTree()
  const missing = []
  for (const [loc, node] of ideal.idealTree.inventory.entries()) {
    if (!virtualInventory.has(loc)) {
      missing.push(`${node.name}@${node.version}`)
    }
  }
  t.same(missing, [], 'lockfile is in sync with package.json, so npm ci would succeed')
})

t.test('project with bundled deps and a link dep on itself', async t => {
  const pkg = {
    name: '@isaacs/testing-bundle-self-link',
    version: '1.0.0',
    bin: {
      'testing-bundle-self-link': 'bin.js',
    },
    scripts: {
      test: 'testing-bundle-self-link',
      postinstall: 'testing-bundle-self-link',
    },
    bundleDependencies: [
      'abbrev',
    ],
    dependencies: {
      '@isaacs/testing-bundle-self-link': 'file:.',
      abbrev: '',
    },
  }
  const path = t.testdir({
    'package.json': JSON.stringify(pkg),
    'bin.js': `#!/usr/bin/env node
console.log('TAP version 13')
console.log('1..1')
console.log('ok 1 - this is fine')
`,
  })
  createRegistry(t, true)

  t.matchSnapshot(await printReified(path), 'result')
  t.resolves(runScript({
    event: 'test',
    path,
    pkg,
    stdio: 'pipe',
  }), 'test result')
})

t.test('running lifecycle scripts of unchanged link nodes on reify', async t => {
  const path = fixture(t, 'link-dep-lifecycle-scripts')
  createRegistry(t, false)
  t.matchSnapshot(await printReified(path), 'result')

  t.ok(fs.lstatSync(resolve(path, 'a/a-prepare')).isFile(),
    'should run prepare lifecycle scripts for links directly linked to the tree')
  t.ok(fs.lstatSync(resolve(path, 'a/a-post-install')).isFile(),
    'should run postinstall lifecycle scripts for links directly linked to the tree')
})

t.test('save-prod, with optional', async t => {
  const path = t.testdir({
    'package.json': JSON.stringify({
      devDependencies: { abbrev: '*' },
      optionalDependencies: { abbrev: '*' },
    }),
  })
  createRegistry(t, true)
  const arb = newArb({ path })
  await arb.reify({ add: ['abbrev'], saveType: 'prod' })
  t.matchSnapshot(fs.readFileSync(path + '/package.json', 'utf8'))
})

t.test('saveBundle', async t => {
  const path = t.testdir({
    'package.json': JSON.stringify({
      dependencies: { abbrev: '*' },
    }),
  })
  createRegistry(t, true)
  const arb = newArb({ path })
  await arb.reify({ add: ['abbrev'], saveType: 'prod', saveBundle: true })
  t.matchSnapshot(fs.readFileSync(path + '/package.json', 'utf8'))
})

t.test('no saveType: dev w/ compatible peer', async t => {
  const path = t.testdir({
    'package.json': JSON.stringify({
      peerDependencies: { abbrev: '*' },
      devDependencies: { abbrev: '*' },
    }),
  })
  createRegistry(t, true)
  const arb = newArb({ path })
  await arb.reify({ add: ['abbrev'] })
  t.matchSnapshot(fs.readFileSync(path + '/package.json', 'utf8'))
})

t.test('no saveType: dev w/ incompatible peer', async t => {
  const path = t.testdir({
    'package.json': JSON.stringify({
      peerDependencies: { abbrev: '0.0.0' },
      devDependencies: { abbrev: '*' },
    }),
  })
  createRegistry(t, true)
  const arb = newArb({ path })
  await arb.reify({ add: ['abbrev'] })
  t.matchSnapshot(fs.readFileSync(path + '/package.json', 'utf8'))
})

t.test('no saveType: dev w/ compatible optional', async t => {
  const path = t.testdir({
    'package.json': JSON.stringify({
      optionalDependencies: { abbrev: '*' },
      devDependencies: { abbrev: '*' },
    }),
  })
  createRegistry(t, true)
  const arb = newArb({ path })
  await arb.reify({ add: ['abbrev'] })
  t.matchSnapshot(fs.readFileSync(path + '/package.json', 'utf8'))
})

t.test('no saveType: dev w/ incompatible optional', async t => {
  const path = t.testdir({
    'package.json': JSON.stringify({
      optionalDependencies: { abbrev: '0.0.0' },
      devDependencies: { abbrev: '*' },
    }),
  })
  createRegistry(t, true)
  const arb = newArb({ path })
  await arb.reify({ add: ['abbrev'] })
  t.matchSnapshot(fs.readFileSync(path + '/package.json', 'utf8'))
})

t.test('no saveType: prod w/ peer', async t => {
  const path = t.testdir({
    'package.json': JSON.stringify({
      peerDependencies: { abbrev: '*' },
      dependencies: { abbrev: '*' },
    }),
  })
  createRegistry(t, true)
  const arb = newArb({ path })
  await arb.reify({ add: ['abbrev'] })
  t.matchSnapshot(fs.readFileSync(path + '/package.json', 'utf8'))
})

t.test('no saveType: peer only', async t => {
  const path = t.testdir({
    'package.json': JSON.stringify({
      peerDependencies: { abbrev: '*' },
    }),
  })
  createRegistry(t, true)
  const arb = newArb({ path })
  await arb.reify({ add: ['abbrev'] })
  t.matchSnapshot(fs.readFileSync(path + '/package.json', 'utf8'))
})

t.test('no saveType: optional only', async t => {
  const path = t.testdir({
    'package.json': JSON.stringify({
      optionalDependencies: { abbrev: '*' },
    }),
  })
  createRegistry(t, true)
  const arb = newArb({ path })
  await arb.reify({ add: ['abbrev'] })
  t.matchSnapshot(fs.readFileSync(path + '/package.json', 'utf8'))
})

t.test('do not delete linked targets when link omitted', async t => {
  const path = t.testdir({
    'package.json': JSON.stringify({
      devDependencies: {
        foo: 'file:foo',
      },
      dependencies: {
        abbrev: '',
      },
    }),
    node_modules: {
      foo: t.fixture('symlink', '../foo'),
      abbrev: {
        'package.json': JSON.stringify({
          name: 'abbrev',
          version: '1.2.3',
        }),
      },
    },
    foo: {
      'package.json': JSON.stringify({
        name: 'foo',
        version: '1.2.3',
        dependencies: {
          bar: '1.2.3',
        },
      }),
      'index.js': 'console.log("hello from foo")',
      node_modules: {
        bar: {
          'package.json': JSON.stringify({
            name: 'bar',
            version: '1.2.3',
          }),
        },
      },
    },
  })
  const barpj = resolve(path, 'foo/node_modules/bar/package.json')
  const fooindex = resolve(path, 'foo/index.js')
  t.equal(fs.existsSync(barpj), true, 'bar package.json present')
  t.equal(fs.existsSync(fooindex), true, 'foo index.js present')
  createRegistry(t, false)
  const tree = await reify(path, { omit: ['dev'] })
  t.equal(fs.existsSync(barpj), true, 'bar package.json still present')
  t.equal(fs.existsSync(fooindex), true, 'foo index.js still present')
  t.notOk(tree.children.get('foo'), 'does not have foo child any more')
  t.equal(tree.fsChildren.size, 1, 'still has foo fschild')
})

t.test('add spec * with semver prefix range gets updated', async t => {
  const path = t.testdir({ 'package.json': '{}' })
  createRegistry(t, true)
  const arb = newArb({ path })
  await arb.reify({ add: ['latest-is-prerelease'] })
  t.matchSnapshot(fs.readFileSync(path + '/package.json', 'utf8'))
})

t.test('add deps to workspaces', async t => {
  const fixture = {
    'package.json': JSON.stringify({
      workspaces: [
        'packages/*',
      ],
      dependencies: {
        mkdirp: '^1.0.4',
      },
    }),
    packages: {
      a: {
        'package.json': JSON.stringify({
          name: 'a',
          version: '1.2.3',
          dependencies: {
            mkdirp: '^0.5.0',
          },
        }),
      },
      b: {
        'package.json': JSON.stringify({
          name: 'b',
          version: '1.2.3',
        }),
      },
    },
  }

  t.test('no args', async t => {
    const path = t.testdir(fixture)
    createRegistry(t, true)
    const tree = await reify(path)
    t.equal(tree.children.get('mkdirp').version, '1.0.4')
    t.equal(tree.children.get('a').target.children.get('mkdirp').version, '0.5.5')
    t.equal(tree.children.get('b').target.children.get('mkdirp'), undefined)
    t.matchSnapshot(printTree(tree), 'returned tree')
    t.matchSnapshot(require(path + '/package-lock.json'), 'lockfile')
  })

  t.test('add mkdirp 0.5.0 to b', async t => {
    const path = t.testdir(fixture)
    createRegistry(t, true)
    await reify(path)
    const tree = await reify(path, { workspaces: ['b'], add: ['mkdirp@0.5.0'] })
    t.equal(tree.children.get('mkdirp').version, '1.0.4')
    t.equal(tree.children.get('a').target.children.get('mkdirp').version, '0.5.5')
    t.equal(tree.children.get('b').target.children.get('mkdirp').version, '0.5.0')
    t.matchSnapshot(printTree(tree), 'returned tree')
    t.matchSnapshot(require(path + '/packages/b/package.json'), 'package.json b')
    t.matchSnapshot(require(path + '/package-lock.json'), 'lockfile')
  })

  t.test('remove mkdirp from a', async t => {
    const path = t.testdir(fixture)
    createRegistry(t, true)
    await reify(path)
    const tree = await reify(path, { workspaces: ['a'], rm: ['mkdirp'] })
    t.equal(tree.children.get('mkdirp').version, '1.0.4')
    t.equal(tree.children.get('a').target.children.get('mkdirp'), undefined)
    t.equal(tree.children.get('a').target.edgesOut.get('mkdirp'), undefined)
    t.equal(tree.children.get('b').target.children.get('mkdirp'), undefined)
    t.matchSnapshot(printTree(tree), 'returned tree')
    t.matchSnapshot(require(path + '/packages/a/package.json'), 'package.json a')
    t.matchSnapshot(require(path + '/package-lock.json'), 'lockfile')
  })

  t.test('upgrade mkdirp in a, dedupe on root', async t => {
    const path = t.testdir(fixture)
    createRegistry(t, true)
    await reify(path)
    const tree = await reify(path, { workspaces: ['a'], add: ['mkdirp@1'] })
    t.equal(tree.children.get('mkdirp').version, '1.0.4')
    t.equal(tree.children.get('a').target.children.get('mkdirp'), undefined)
    t.equal(tree.children.get('a').target.edgesOut.get('mkdirp').spec, '^1.0.4')
    t.equal(tree.children.get('b').target.children.get('mkdirp'), undefined)
    t.matchSnapshot(printTree(tree), 'returned tree')
    t.matchSnapshot(require(path + '/packages/a/package.json'), 'package.json a')
    t.matchSnapshot(require(path + '/package-lock.json'), 'lockfile')
  })

  t.test('add mkdirp 0.5.0 to b, empty start', async t => {
    const path = t.testdir(fixture)
    createRegistry(t, true)
    const tree = await reify(path, { workspaces: ['b'], add: ['mkdirp@0.5.0'] })
    t.equal(tree.children.get('mkdirp'), undefined)
    t.equal(tree.children.get('a'), undefined, 'did not even link workspace "a"')
    t.equal(tree.children.get('b').target.children.get('mkdirp').version, '0.5.0')
    t.matchSnapshot(printTree(tree), 'returned tree')
    t.matchSnapshot(require(path + '/packages/b/package.json'), 'package.json b')
    t.matchSnapshot(require(path + '/package-lock.json'), 'lockfile')
  })

  t.test('remove mkdirp from a, empty start', async t => {
    const path = t.testdir(fixture)
    createRegistry(t, true)
    const tree = await reify(path, { workspaces: ['a'], rm: ['mkdirp'] })
    t.equal(tree.children.get('mkdirp'), undefined)
    t.equal(tree.children.get('a').target.children.get('mkdirp'), undefined)
    t.equal(tree.children.get('a').target.edgesOut.get('mkdirp'), undefined)
    t.equal(tree.children.get('b'), undefined, 'did not link workspace "b"')
    t.matchSnapshot(printTree(tree), 'returned tree')
    t.matchSnapshot(require(path + '/packages/a/package.json'), 'package.json a')
    t.matchSnapshot(require(path + '/package-lock.json'), 'lockfile')
  })

  t.test('upgrade mkdirp in a, dedupe on root, empty start', async t => {
    const path = t.testdir(fixture)
    createRegistry(t, true)
    const tree = await reify(path, { workspaces: ['a'], add: ['mkdirp@1'] })
    t.equal(tree.children.get('mkdirp').version, '1.0.4')
    t.equal(tree.children.get('a').target.children.get('mkdirp'), undefined)
    t.equal(tree.children.get('a').target.edgesOut.get('mkdirp').spec, '^1.0.4')
    t.equal(tree.children.get('b'), undefined, 'did not link "b" workspace')
    t.matchSnapshot(printTree(tree), 'returned tree')
    t.matchSnapshot(require(path + '/packages/a/package.json'), 'package.json a')
    t.matchSnapshot(require(path + '/package-lock.json'), 'lockfile')
  })

  t.test('add a to root', async t => {
    const path = t.testdir(fixture)
    createRegistry(t, true)
    await reify(path)
    const tree = await reify(path, { add: ['a'], lockfileVersion: 3 })
    t.matchSnapshot(printTree(tree), 'returned tree')
    t.matchSnapshot(require(path + '/package.json'), 'package.json added workspace as dep')
    t.matchSnapshot(require(path + '/package-lock.json'), 'lockfile added workspace as dep')
  })
})

t.test('reify audit only workspace deps when reifying workspace', async t => {
  const path = t.testdir({
    'package.json': JSON.stringify({
      workspaces: ['packages/*'],
    }),
    packages: {
      a: {
        'package.json': JSON.stringify({
          name: 'a',
          version: '1.2.3',
          dependencies: {
            'kind-of': '6.0.0',
          },
        }),
      },
      b: {
        'package.json': JSON.stringify({
          name: 'b',
          version: '1.2.3',
          dependencies: {
            minimist: '0.0.8',
          },
        }),
      },
    },
  })
  const registry = createRegistry(t, true)
  registry.audit({ results: require('../fixtures/audit-nyc-mkdirp/advisory-bulk.json') })
  const arb = newArb({ path, audit: true, workspaces: ['a'] })
  const tree = await arb.reify()
  const report = arb.auditReport.toJSON()
  t.equal(report.vulnerabilities.minimist, undefined, 'minimist not audited')
  t.match(report.vulnerabilities['kind-of'], {
    name: 'kind-of',
    severity: 'low',
    range: '6.0.0 - 6.0.2',
    nodes: ['node_modules/kind-of'],
    fixAvailable: {
      name: 'kind-of',
      version: '6.0.3',
      isSemVerMajor: false,
    },
    via: [{
      source: 1490,
      name: 'kind-of',
      dependency: 'kind-of',
      title: 'Validation Bypass',
      url: 'https://npmjs.com/advisories/1490',
      severity: 'low',
      range: '>=6.0.0 <6.0.3',
    }],
  }, 'kind-of audited')
  t.matchSnapshot(printTree(tree), 'resulting tree')
})

t.test('update a dep when the lockfile is lying about it', async t => {
  // lockfile and pj have new version, but old version is in nm
  // no hidden lockfile to provide metadata
  const path = t.testdir({
    'package.json': JSON.stringify({
      dependencies: {
        abbrev: '1.1.1',
      },
    }),
    'package-lock.json': JSON.stringify({
      lockfileVersion: 2,
      requires: true,
      packages: {
        '': {
          devDependencies: {
            abbrev: '1.1.1',
          },
        },
        'node_modules/abbrev': {
          version: '1.1.1',
          resolved: 'https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz',
          integrity: 'sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q==',
          dev: true,
        },
      },
      dependencies: {
        abbrev: {
          version: '1.1.1',
          resolved: 'https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz',
          integrity: 'sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q==',
          dev: true,
        },
      },
    }),
    node_modules: {
      abbrev: {
        'package.json': JSON.stringify({
          name: 'abbrev',
          version: '1.1.0',
        }),
      },
    },
  })

  createRegistry(t, true)
  const tree = await reify(path)
  const abbrev = tree.children.get('abbrev')
  t.equal(abbrev.version, '1.1.1')
  t.equal(require(abbrev.path + '/package.json').version, '1.1.1')
})

t.test('shrinkwrap which lacks metadata updates deps', async t => {
  const path = t.testdir({
    'package.json': '{}',
  })

  createRegistry(t, true)
  const first = await reify(path, {
    add: ['@isaacs/testing-shrinkwrap-abbrev@1.2.0'],
  })
  const firstAbbrev = first.children.get('@isaacs/testing-shrinkwrap-abbrev')
    .children.get('abbrev')
  t.equal(firstAbbrev.version, '1.1.0')

  const abbrevPath = firstAbbrev.path
  const abbrevpj = () =>
    JSON.parse(fs.readFileSync(abbrevPath + '/package.json', 'utf8'))

  t.equal(abbrevpj().version, firstAbbrev.version)

  const second = await reify(path, {
    add: ['@isaacs/testing-shrinkwrap-abbrev@1.2.1'],
  })
  const secondAbbrev = second.children.get('@isaacs/testing-shrinkwrap-abbrev')
    .children.get('abbrev')
  t.equal(secondAbbrev.version, '1.1.1')
  t.equal(abbrevpj().version, secondAbbrev.version)
})

t.test('move aside symlink clutter', async t => {
  // have to make the clutter manually, because we collide packages based
  // on case-insensitive names, so the ABBREV folder would be removed.
  // not sure how this would ever happen, but defense in depth.
  const path = t.testdir({
    'package.json': JSON.stringify({
      dependencies: {
        abbrev: 'latest',
      },
    }),
    target: {
      file: 'do not delete me please',
      'package.json': JSON.stringify({ name: 'ABBREV', version: '1.0.0' }),
    },
    node_modules: {
      ABBREV: t.fixture('symlink', '../target'),
    },
  })

  // check to see if we're on a case-insensitive fs
  try {
    const st = fs.lstatSync(path + '/node_modules/abbrev')
    t.equal(st.isSymbolicLink(), true, 'fs is case-insensitive')
  } catch (er) {
    t.plan(0, 'case-sensitive file system, test not relevant')
    return
  }

  createRegistry(t, true)
  const tree = await printReified(path)
  const st = fs.lstatSync(path + '/node_modules/abbrev')
  t.equal(st.isSymbolicLink(), false)
  t.equal(st.isDirectory(), true)
  const realName = basename(fs.realpathSync.native(path + '/node_modules/abbrev'))
  t.equal(realName, 'abbrev', 'lowercase form is the winner')
  t.equal(fs.readFileSync(path + '/target/file', 'utf8'),
    'do not delete me please')
  const linkPJ = fs.readFileSync(path + '/target/package.json', 'utf8')
  t.strictSame(JSON.parse(linkPJ), {
    name: 'ABBREV',
    version: '1.0.0',
  })
  const abbrevPJ = fs.readFileSync(path + '/node_modules/abbrev/package.json', 'utf8')
  t.match(JSON.parse(abbrevPJ), {
    name: 'abbrev',
    version: '1.1.1',
  })

  t.matchSnapshot(tree)
})

t.test('collide case-variant dep names', async t => {
  const path = t.testdir({
    'package.json': JSON.stringify({
      dependencies: {
        ABBREV: 'file:target',
        abbrev: '1',
      },
    }),
    target: {
      file: 'do not delete me please',
      'package.json': JSON.stringify({ name: 'ABBREV', version: '1.0.0' }),
    },
    node_modules: {
      ABBREV: t.fixture('symlink', '../target'),
    },
  })

  createRegistry(t, true)
  const tree = await printReified(path)
  const st = fs.lstatSync(path + '/node_modules/abbrev')
  t.equal(st.isSymbolicLink(), false)
  const realName = basename(fs.realpathSync.native(path + '/node_modules/abbrev'))
  t.equal(realName, 'abbrev', 'lowercase form is the winner')
  t.equal(fs.readFileSync(path + '/target/file', 'utf8'),
    'do not delete me please')
  const linkPJ = fs.readFileSync(path + '/target/package.json', 'utf8')
  t.strictSame(JSON.parse(linkPJ), {
    name: 'ABBREV',
    version: '1.0.0',
  })

  t.matchSnapshot(tree, 'tree 1')
  const tree2 = await printReified(path, { add: ['abbrev@latest'] })
  t.matchSnapshot(tree2, 'tree 2')
  const linkPJ2 = fs.readFileSync(path + '/target/package.json', 'utf8')
  t.strictSame(JSON.parse(linkPJ2), {
    name: 'ABBREV',
    version: '1.0.0',
  }, 'target was not overwritten')
  t.equal(fs.readFileSync(path + '/target/file', 'utf8'),
    'do not delete me please')
  const abbrevPJ = fs.readFileSync(path + '/node_modules/abbrev/package.json', 'utf8')
  t.match(JSON.parse(abbrevPJ), {
    name: 'abbrev',
    version: '1.1.1',
  })
})

t.test('node_modules may not be a symlink', async t => {
  const path = t.testdir({
    target: {},
    node_modules: t.fixture('symlink', 'target'),
    'package.json': JSON.stringify({
      dependencies: {
        abbrev: '',
      },
    }),
  })
  createRegistry(t, true)
  const warnings = warningTracker()
  const tree = await printReified(path)
  t.matchSnapshot(tree)
  t.matchSnapshot(normalizePaths(warnings()))
})

t.test('never unpack into anything other than a real directory', async t => {
  const kUnpack = Symbol.for('unpackNewModules')
  const unpackNewModules = Arborist.prototype[kUnpack]
  const path = t.testdir({
    'package.json': JSON.stringify({
      dependencies: {
        once: '',
        wrappy: 'file:target',
      },
    }),
    target: {
      donotdeleteme: 'please do not delete this',
      'package.json': JSON.stringify({
        name: 'donotclobberme',
        version: '1.2.3-please-do-not-clobber',
      }),
    },
  })
  createRegistry(t, true)
  const arb = newArb({ path })
  const logs = debugLogTracker()
  const wrappy = resolve(path, 'node_modules/once/node_modules/wrappy')
  arb[kUnpack] = () => {
    // will have already created it
    fs.rmSync(wrappy, { recursive: true, force: true })
    const target = resolve(path, 'target')
    fs.symlinkSync(target, wrappy, 'junction')
    arb[kUnpack] = unpackNewModules
    return arb[kUnpack]()
  }
  await t.rejects(arb.reify({ path }), {
    message: 'ENOTDIR: not a directory',
    code: 'ENOTDIR',
    path: wrappy,
  })
  t.match(logs(), [['unpacking into a non-directory', { path: wrappy }]])
})

t.test('adding an unresolvable optional dep is OK', async t => {
  const path = t.testdir({
    'package.json': JSON.stringify({
      optionalDependencies: {
        abbrev: '999999',
      },
    }),
  })
  createRegistry(t, true)
  const tree = await reify(path, { add: ['abbrev'] })
  t.equal(tree.children.size, 0, 'not added')
})

t.test('includeWorkspaceRoot in addition to workspace', async t => {
  const path = t.testdir({
    'package.json': JSON.stringify({
      dependencies: {
        once: '',
      },
      workspaces: ['packages/*'],
    }),
    packages: {
      a: {
        'package.json': JSON.stringify({
          name: 'a',
          version: '1.0.1',
          dependencies: {
            abbrev: '',
          },
        }),
      },
      b: {
        'package.json': JSON.stringify({
          name: 'b',
          version: '9.8.1',
          dependencies: {
            semver: '',
          },
        }),
      },
    },
  })
  createRegistry(t, true)
  const tree = await reify(path, { includeWorkspaceRoot: true, workspaces: ['a'] })
  t.matchSnapshot(printTree(tree))
  t.equal(tree.inventory.query('name', 'semver').size, 0)
  t.equal(tree.inventory.query('name', 'abbrev').size, 1)
  t.equal(tree.inventory.query('name', 'once').size, 1)
})

t.test('no workspace', async t => {
  const path = t.testdir({
    'package.json': JSON.stringify({
      dependencies: {
        once: '',
      },
      workspaces: ['packages/*'],
    }),
    packages: {
      a: {
        'package.json': JSON.stringify({
          name: 'a',
          version: '1.0.1',
          dependencies: {
            abbrev: '',
          },
        }),
      },
      b: {
        'package.json': JSON.stringify({
          name: 'b',
          version: '9.8.1',
          dependencies: {
            semver: '',
          },
        }),
      },
    },
  })
  createRegistry(t, true)
  const tree = await reify(path, { workspacesEnabled: false, workspaces: ['a', 'b'] })
  t.matchSnapshot(printTree(tree))
  t.equal(tree.inventory.query('name', 'semver').size, 0)
  t.equal(tree.inventory.query('name', 'abbrev').size, 0)
  t.equal(tree.inventory.query('name', 'once').size, 1)
})

t.test('add local dep with existing dev + peer/optional', async t => {
  const path = t.testdir({
    project: {
      'package.json': JSON.stringify({
        devDependencies: {
          abbrev: '^1.0.0',
        },
        peerDependencies: {
          abbrev: '^1.0.0',
        },
        optionalDependencies: {
          abbrev: '^1.0.0',
        },
      }),
    },
    dep: {
      'package.json': JSON.stringify({
        name: 'abbrev',
        version: '1.0.0',
      }),
    },
  })

  const project = resolve(path, 'project')
  const cwd = process.cwd()
  t.teardown(() => process.chdir(cwd))
  process.chdir(project)

  createRegistry(t, false)
  const tree = await reify(project, { add: ['../dep'] })

  t.matchSnapshot(printTree(tree), 'tree')
  t.equal(tree.children.get('abbrev').resolved, 'file:../../dep', 'resolved')
  t.equal(tree.children.size, 1, 'children')
})

t.test('runs dependencies script if tree changes', async (t) => {
  const path = t.testdir({
    'package.json': JSON.stringify({
      name: 'root',
      version: '1.0.0',
      dependencies: {
        abbrev: '^1.1.1',
      },
      scripts: {
        predependencies: `node -e "require('fs').writeFileSync('ran-predependencies', '')"`,
        dependencies: `node -e "require('fs').writeFileSync('ran-dependencies', '')"`,
        postdependencies: `node -e "require('fs').writeFileSync('ran-postdependencies', '')"`,
      },
    }),
  })

  createRegistry(t, true)
  await reify(path)

  for (const script of ['predependencies', 'dependencies', 'postdependencies']) {
    const expectedPath = join(path, `ran-${script}`)
    t.ok(fs.existsSync(expectedPath), `ran ${script}`)
    // delete the files after we assert they exist
    fs.unlinkSync(expectedPath)
  }

  // reify again without changing dependencies
  await reify(path)

  for (const script of ['predependencies', 'dependencies', 'postdependencies']) {
    const expectedPath = join(path, `ran-${script}`)
    // and this time we assert that they do _not_ exist
    t.not(fs.existsSync(expectedPath), `did not run ${script}`)
  }

  const outputs = outputTracker()

  // reify again, this time adding a new dependency
  await reify(path, { foregroundScripts: true, add: ['once@^1.4.0'] })

  t.match(outputs(), [/predependencies/, /dependencies/, /postdependencies/], 'logged banners')

  // files should exist again
  for (const script of ['predependencies', 'dependencies', 'postdependencies']) {
    const expectedPath = join(path, `ran-${script}`)
    t.ok(fs.existsSync(expectedPath), `ran ${script}`)
    fs.unlinkSync(expectedPath)
  }
})

t.test('save package.json on update', t => {
  t.test('should save many deps in multiple package.json when using save=true', async t => {
    const path = fixture(t, 'workspaces-need-update')

    createRegistry(t, true)
    await reify(path, { update: true, save: true })

    t.same(
      require(resolve(path, 'package.json')),
      { dependencies: { abbrev: '^1.1.1' }, workspaces: ['a', 'b'] },
      'should save top level dep update to root package.json'
    )
    t.same(
      require(resolve(path, 'a', 'package.json')),
      { dependencies: { abbrev: '^1.1.1', once: '^1.4.0' } },
      'should save workspace dep to its package.json file')

    t.matchSnapshot(
      fs.readFileSync(resolve(path, 'package-lock.json'), 'utf8'),
      'should update lockfile with many deps updated package.json save=true'
    )
  })

  t.test('should not save many deps in multiple package.json when using save=false', async t => {
    const path = fixture(t, 'workspaces-need-update')

    createRegistry(t, true)
    await reify(path, { update: true, save: false })

    t.same(
      require(resolve(path, 'package.json')),
      {
        dependencies: { abbrev: '^1.0.4' },
        workspaces: ['a', 'b'],
      },
      'should not save top level dep update to root package.json'
    )
    t.same(
      require(resolve(path, 'a', 'package.json')),
      { dependencies: { abbrev: '^1.0.4', once: '^1.3.2' } },
      'should not save workspace dep to its package.json file')

    // package-lock entries will still get updated:
    t.matchSnapshot(
      fs.readFileSync(resolve(path, 'package-lock.json'), 'utf8'),
      'should update lockfile with many deps updated package.json save=false'
    )
  })

  t.test('should not save any with save=false and package-lock=false', async t => {
    const path = fixture(t, 'workspaces-need-update')

    createRegistry(t, true)
    await reify(path, { update: true, save: false, packageLock: false })

    t.same(
      require(resolve(path, 'package.json')),
      {
        dependencies: { abbrev: '^1.0.4' },
        workspaces: ['a', 'b'],
      },
      'should not save top level dep update to root package.json'
    )
    t.same(
      require(resolve(path, 'a', 'package.json')),
      { dependencies: { abbrev: '^1.0.4', once: '^1.3.2' } },
      'should not save workspace dep to its package.json file')

    // package-lock entries will still get updated:
    t.matchSnapshot(
      JSON.stringify(JSON.parse(fs.readFileSync(resolve(path, 'package-lock.json'), 'utf8')), null, 2),
      'should update lockfile with many deps updated package.json save=false'
    )
  })

  t.test('should update named dep across multiple package.json using save=true', async t => {
    const path = fixture(t, 'workspaces-need-update')

    createRegistry(t, true)
    await reify(path, { update: ['abbrev'], save: true })

    t.same(
      require(resolve(path, 'package.json')),
      {
        dependencies: { abbrev: '^1.1.1' },
        workspaces: ['a', 'b'],
      },
      'should save top level dep update to root package.json'
    )
    t.same(
      require(resolve(path, 'a', 'package.json')),
      { dependencies: { abbrev: '^1.1.1', once: '^1.3.2' } },
      'should save only workspace a updated dep to its package.json file')
    t.same(
      require(resolve(path, 'b', 'package.json')),
      { dependencies: { abbrev: '^1.1.1' } },
      'should save only workspace b updated dep to its package.json file')

    t.matchSnapshot(
      fs.readFileSync(resolve(path, 'package-lock.json'), 'utf8'),
      'should update lockfile with many deps updated package.json save=true'
    )
  })

  t.test('should update single named dep across multiple package.json using save=true', async t => {
    const path = fixture(t, 'workspaces-need-update')

    createRegistry(t, true)
    await reify(path, { update: ['once'], save: true })

    t.same(
      require(resolve(path, 'package.json')),
      {
        dependencies: { abbrev: '^1.0.4' },
        workspaces: ['a', 'b'],
      },
      'should save no top level dep update to root package.json'
    )
    t.same(
      require(resolve(path, 'a', 'package.json')),
      { dependencies: { abbrev: '^1.0.4', once: '^1.4.0' } },
      'should save only workspace single updated dep to its package.json file')
    t.same(
      require(resolve(path, 'b', 'package.json')),
      { dependencies: { abbrev: '^1.0.4' } },
      'should not change workspace b package.json file')

    t.matchSnapshot(
      fs.readFileSync(resolve(path, 'package-lock.json'), 'utf8'),
      'should update lockfile with single dep updated package.json save=true'
    )
  })

  t.test('should preserve exact ranges', async t => {
    const path = fixture(t, 'update-exact-version')

    createRegistry(t, true)
    await reify(path, { update: true, save: true })

    t.equal(
      require(resolve(path, 'package.json')).dependencies.abbrev,
      '1.0.4',
      'should save no top level dep update to root package.json'
    )
  })

  t.test('should preserve exact ranges, missing actual tree', async t => {
    const path = t.testdir({
      'package.json': JSON.stringify({
        dependencies: {
          abbrev: '1.0.4',
        },
      }),
    })

    createRegistry(t, true)
    await reify(path, { update: true, save: true })

    t.equal(
      require(resolve(path, 'package.json')).dependencies.abbrev,
      '1.0.4',
      'should save no top level dep update to root package.json'
    )
  })

  t.test('should not throw when trying to update a link dep', async t => {
    const path = t.testdir({
      one: {
        'package.json': JSON.stringify({
          name: 'one',
          version: '1.0.0',
          dependencies: {
            two: 'file:../two',
          },
        }),
      },
      two: {
        'package.json': JSON.stringify({
          name: 'two',
          version: '1.0.0',
        }),
      },
    })

    createRegistry(t, false)
    await t.resolves(reify(resolve(path, 'one'), { update: true, save: true, workspaces: [] }))

    t.equal(
      require(resolve(path, 'one', 'package.json')).dependencies.two,
      'file:../two',
      'should have made no changes'
    )
  })
  t.end()
})

t.test('installLinks', (t) => {
  t.test('when true, packs and extracts instead of symlinks', async (t) => {
    const path = t.testdir({
      a: {
        'package.json': JSON.stringify({
          name: 'a',
          version: '1.0.0',
          main: 'index.js',
          dependencies: {
            b: 'file:../b',
          },
        }),
        'index.js': '',
      },
      b: {
        'package.json': JSON.stringify({
          name: 'b',
          version: '1.0.0',
          main: 'index.js',
        }),
        'index.js': '',
      },
    })

    createRegistry(t, false)
    await reify(resolve(path, 'a'), { installLinks: true })

    const installedB = fs.lstatSync(resolve(path, 'a/node_modules/b'))
    t.ok(installedB.isDirectory(), 'a/node_modules/b is a directory')
  })

  t.test('when false, symlinks', async (t) => {
    const path = t.testdir({
      a: {
        'package.json': JSON.stringify({
          name: 'a',
          version: '1.0.0',
          main: 'index.js',
          dependencies: {
            b: 'file:../b',
          },
        }),
        'index.js': '',
      },
      b: {
        'package.json': JSON.stringify({
          name: 'b',
          version: '1.0.0',
          main: 'index.js',
        }),
        'index.js': '',
      },
    })

    createRegistry(t, false)
    await reify(resolve(path, 'a'), { installLinks: false })

    const installedB = fs.lstatSync(resolve(path, 'a/node_modules/b'))
    t.ok(installedB.isSymbolicLink(), 'a/node_modules/b is a symlink')
  })

  t.test('when symlinks exist, installLinks set to true replaces them with dirs', async (t) => {
    const path = t.testdir({
      a: {
        'package.json': JSON.stringify({
          name: 'a',
          version: '1.0.0',
          main: 'index.js',
          dependencies: {
            b: 'file:../b',
          },
        }),
        'index.js': '',
      },
      b: {
        'package.json': JSON.stringify({
          name: 'b',
          version: '1.0.0',
          main: 'index.js',
        }),
        'index.js': '',
      },
    })

    createRegistry(t, false)
    await reify(resolve(path, 'a'), { installLinks: false, save: true })

    const firstB = fs.lstatSync(resolve(path, 'a/node_modules/b'))
    t.ok(firstB.isSymbolicLink(), 'a/node_modules/b is a symlink')

    await reify(resolve(path, 'a'), { installLinks: true, save: true })

    const secondB = fs.lstatSync(resolve(path, 'a/node_modules/b'))
    t.ok(secondB.isDirectory(), 'a/node_modules/b is now a directory')
  })

  t.test('when directories exist, installLinks set to false replaces them with symlinks', async (t) => {
    const path = t.testdir({
      a: {
        'package.json': JSON.stringify({
          name: 'a',
          version: '1.0.0',
          main: 'index.js',
          dependencies: {
            b: 'file:../b',
          },
        }),
        'index.js': '',
      },
      b: {
        'package.json': JSON.stringify({
          name: 'b',
          version: '1.0.0',
          main: 'index.js',
        }),
        'index.js': '',
      },
    })

    createRegistry(t, false)
    await reify(resolve(path, 'a'), { installLinks: true })

    const firstB = fs.lstatSync(resolve(path, 'a/node_modules/b'))
    t.ok(firstB.isDirectory(), 'a/node_modules/b is a directory')

    await reify(resolve(path, 'a'), { installLinks: false })

    const secondB = fs.lstatSync(resolve(path, 'a/node_modules/b'))
    t.ok(secondB.isSymbolicLink(), 'a/node_modules/b is now a symlink')
  })

  t.test('when installLinks is true, dependencies of links are installed', async (t) => {
    const path = t.testdir({
      a: {
        'package.json': JSON.stringify({
          name: 'a',
          version: '1.0.0',
          main: 'index.js',
          dependencies: {
            b: 'file:../b',
          },
        }),
        'index.js': '',
      },
      b: {
        'package.json': JSON.stringify({
          name: 'b',
          version: '1.0.0',
          main: 'index.js',
          dependencies: {
            abbrev: '^1.0.0',
          },
        }),
        'index.js': '',
      },
    })

    createRegistry(t, true)
    await reify(resolve(path, 'a'), { installLinks: true })

    const installedB = fs.lstatSync(resolve(path, 'a/node_modules/b'))
    t.ok(installedB.isDirectory(), 'a/node_modules/b is a directory')

    const abbrev = fs.lstatSync(resolve(path, 'a/node_modules/abbrev'))
    t.ok(abbrev.isDirectory(), 'abbrev got installed')
  })

  t.test('workspaces are always symlinks, even with installLinks set to true', async (t) => {
    const path = t.testdir({
      a: {
        'package.json': JSON.stringify({
          name: 'a',
          version: '1.0.0',
          main: 'index.js',
          dependencies: {
            b: 'file:../b',
            c: '^1.0.0',
          },
          workspaces: ['./c'],
        }),
        'index.js': '',
        c: {
          'package.json': JSON.stringify({
            name: 'c',
            version: '1.0.0',
            main: 'index.js',
          }),
          'index.js': '',
        },
      },
      b: {
        'package.json': JSON.stringify({
          name: 'b',
          version: '1.0.0',
          main: 'index.js',
          dependencies: {
            abbrev: '^1.0.0',
          },
        }),
        'index.js': '',
      },
    })

    createRegistry(t, true)
    await reify(resolve(path, 'a'), { installLinks: true })

    const installedB = fs.lstatSync(resolve(path, 'a/node_modules/b'))
    t.ok(installedB.isDirectory(), 'a/node_modules/b is a directory')

    const installedC = fs.lstatSync(resolve(path, 'a/node_modules/c'))
    t.ok(installedC.isSymbolicLink(), 'a/node_modules/c is a symlink')

    const abbrev = fs.lstatSync(resolve(path, 'a/node_modules/abbrev'))
    t.ok(abbrev.isDirectory(), 'abbrev got installed')
  })

  t.end()
})

t.test('root overrides with file: paths are visible to workspaces', async t => {
  const path = t.testdir({
    'package.json': JSON.stringify({
      name: 'root',
      workspaces: ['hello', 'nested/goodbye'],
      dependencies: {},
      overrides: {
        print: 'file:./print',
      },
    }),
    hello: {
      'package.json': JSON.stringify({
        name: 'hello',
        version: '1.0.0',
        dependencies: {
          print: '../print',
        },
      }),
    },
    nested: {
      goodbye: {
        'package.json': JSON.stringify({
          name: 'second',
          version: '1.0.0',
          dependencies: {
            print: '../print',
          },
        }),
      },
    },
    print: {
      'package.json': JSON.stringify({
        name: 'print',
        version: '1.0.0',
        main: 'index.js',
      }),
    },
  })

  createRegistry(t, false)
  await reify(path)

  const printSymlink = fs.readlinkSync(resolve(path, 'node_modules/print'))
  const secondSymlink = fs.readlinkSync(resolve(path, 'node_modules/second'))

  // Create a platform-agnostic way to compare symlink targets
  const normalizeLinkTarget = target => {
    if (process.platform === 'win32') {
      // For Windows: convert absolute paths to relative and normalize slashes
      const linkDir = dirname(resolve(path, 'node_modules/print'))
      return relative(linkDir, target).replace(/\\/g, '/')
    }
    // For Unix: already a relative path
    return target
  }

  t.equal(
    normalizeLinkTarget(printSymlink),
    '../print',
    'print symlink points to ../print (normalized for platform)'
  )

  t.equal(
    normalizeLinkTarget(secondSymlink),
    '../nested/goodbye',
    'print symlink points to ../nested/goodbye (normalized for platform)'
  )
})

t.test('should preserve exact ranges, missing actual tree', async (t) => {
  const Pacote = require('pacote')
  const Arborist = t.mock('../../lib/arborist', {
    pacote: {
      ...Pacote,
      extract: async (...args) => {
        if (args[0].startsWith('gitssh')) {
          // we just want to test that this url is handled properly
          // but its not a real git url we can clone so return early
          return true
        }
        return Pacote.extract(...args)
      },
    },
  })
  const abbrev = resolve(__dirname,
    '../fixtures/registry-mocks/content/abbrev/-/abbrev-1.1.1.tgz')
  const abbrevTGZ = fs.readFileSync(abbrev)

  const abbrevPackument = JSON.stringify({
    _id: 'abbrev',
    _rev: 'lkjadflkjasdf',
    name: 'abbrev',
    'dist-tags': { latest: '1.1.1' },
    versions: {
      '1.1.1': {
        name: 'abbrev',
        version: '1.1.1',
        dist: {
          tarball: 'https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz',
        },
      },
    },
  })

  const abbrevPackument2 = JSON.stringify({
    _id: 'abbrev',
    _rev: 'lkjadflkjasdf',
    name: 'abbrev',
    'dist-tags': { latest: '1.1.1' },
    versions: {
      '1.1.1': {
        name: 'abbrev',
        version: '1.1.1',
        dist: {
          tarball: 'https://registry.garbage.org/abbrev/-/abbrev-1.1.1.tgz',
        },
      },
    },
  })

  const gitSshPackument = JSON.stringify({
    _id: 'gitssh',
    _rev: 'lkjadflkjasdf',
    name: 'gitssh',
    'dist-tags': { latest: '1.1.1' },
    versions: {
      '1.1.1': {
        name: 'gitssh',
        version: '1.1.1',
        dist: {
          // this is a url that `new URL()` cant parse
          // https://github.com/npm/cli/issues/5278
          tarball: 'git+ssh://git@github.com:a/b/c.git#lkjadflkjasdf',
        },
      },
    },
  })

  const customGitSshPackument = JSON.stringify({
    _id: 'gitssh',
    _rev: 'lkjadflkjasdf',
    name: 'gitssh',
    'dist-tags': { latest: '1.1.1' },
    versions: {
      '1.1.1': {
        name: 'gitssh',
        version: '1.1.1',
        dist: {
          // this is a url that `new URL()` cant parse
          // https://github.com/npm/cli/issues/5278
          tarball: 'git+ssh://git@customgit.com:a/b/c.git#lkjadflkjasdf',
        },
      },
    },
  })

  const notAUrlPackument = JSON.stringify({
    _id: 'notaurl',
    _rev: 'lkjadflkjasdf',
    name: 'notaurl',
    'dist-tags': { latest: '1.1.1' },
    versions: {
      '1.1.1': {
        name: 'notaurl',
        version: '1.1.1',
        dist: {
          tarball: 'hey been trying to break this test',
        },
      },
    },
  })

  t.test('valid custom hosted git url', async (t) => {
    const testdir = t.testdir({
      project: {
        'package.json': JSON.stringify({
          name: 'myproject',
          version: '1.0.0',
          dependencies: {
            gitssh: '1.1.1',
          },
        }),
      },
    })

    tnock(t, 'https://registry.github.com')
      .get('/gitssh')
      .reply(200, customGitSshPackument)

    const getLogs = warningTracker()

    const arb = new Arborist({
      path: resolve(testdir, 'project'),
      registry: 'https://registry.github.com',
      cache: resolve(testdir, 'cache'),
    })
    await arb.reify()
    // since it's not throwing an error on invalid url and returning undefined
    // which trashes the node, so here we can only check if it has no warnings
    t.strictSame(getLogs(), [], 'did not get warnings')
  })

  t.test('host should not be replaced replaceRegistryHost=never', async (t) => {
    const testdir = t.testdir({
      project: {
        'package.json': JSON.stringify({
          name: 'myproject',
          version: '1.0.0',
          dependencies: {
            abbrev: '1.1.1',
            gitssh: '1.1.1',
            notaurl: '1.1.1',
          },
        }),
      },
    })

    tnock(t, 'https://registry.github.com')
      .get('/abbrev')
      .reply(200, abbrevPackument)

    tnock(t, 'https://registry.npmjs.org')
      .get('/abbrev/-/abbrev-1.1.1.tgz')
      .reply(200, abbrevTGZ)

    tnock(t, 'https://registry.github.com')
      .get('/gitssh')
      .reply(200, gitSshPackument)

    tnock(t, 'https://registry.github.com')
      .get('/notaurl')
      .reply(200, notAUrlPackument)

    const arb = new Arborist({
      path: resolve(testdir, 'project'),
      registry: 'https://registry.github.com',
      cache: resolve(testdir, 'cache'),
      replaceRegistryHost: 'never',
    })
    await arb.reify()
  })

  t.test('host should be replaced replaceRegistryHost=npmjs', async (t) => {
    const testdir = t.testdir({
      project: {
        'package.json': JSON.stringify({
          name: 'myproject',
          version: '1.0.0',
          dependencies: {
            abbrev: '1.1.1',
            gitssh: '1.1.1',
            notaurl: '1.1.1',
          },
        }),
      },
    })

    tnock(t, 'https://registry.github.com')
      .get('/abbrev')
      .reply(200, abbrevPackument)

    tnock(t, 'https://registry.github.com')
      .get('/gitssh')
      .reply(200, gitSshPackument)

    tnock(t, 'https://registry.github.com')
      .get('/abbrev/-/abbrev-1.1.1.tgz')
      .reply(200, abbrevTGZ)

    tnock(t, 'https://registry.github.com')
      .get('/notaurl')
      .reply(200, notAUrlPackument)

    const arb = new Arborist({
      path: resolve(testdir, 'project'),
      registry: 'https://registry.github.com',
      cache: resolve(testdir, 'cache'),
      replaceRegistryHost: 'npmjs',
    })
    await arb.reify()
  })

  t.test('host should be always replaceRegistryHost=always', async (t) => {
    const testdir = t.testdir({
      project: {
        'package.json': JSON.stringify({
          name: 'myproject',
          version: '1.0.0',
          dependencies: {
            abbrev: '1.1.1',
            gitssh: '1.1.1',
            notaurl: '1.1.1',
          },
        }),
      },
    })

    tnock(t, 'https://registry.github.com')
      .get('/abbrev')
      .reply(200, abbrevPackument2)

    tnock(t, 'https://registry.github.com')
      .get('/gitssh')
      .reply(200, gitSshPackument)

    tnock(t, 'https://registry.github.com')
      .get('/abbrev/-/abbrev-1.1.1.tgz')
      .reply(200, abbrevTGZ)

    tnock(t, 'https://registry.github.com')
      .get('/notaurl')
      .reply(200, notAUrlPackument)

    const arb = new Arborist({
      path: resolve(testdir, 'project'),
      registry: 'https://registry.github.com',
      cache: resolve(testdir, 'cache'),
      replaceRegistryHost: 'always',
    })
    await arb.reify()
  })

  t.test('registry with path should only swap hostname', async (t) => {
    const abbrevPackument3 = JSON.stringify({
      _id: 'abbrev',
      _rev: 'lkjadflkjasdf',
      name: 'abbrev',
      'dist-tags': { latest: '1.1.1' },
      versions: {
        '1.1.1': {
          name: 'abbrev',
          version: '1.1.1',
          dist: {
            tarball: 'https://artifactory.example.com/api/npm/npm-all/abbrev/-/abbrev-1.1.1.tgz',
          },
        },
      },
    })

    const testdir = t.testdir({
      project: {
        'package.json': JSON.stringify({
          name: 'myproject',
          version: '1.0.0',
          dependencies: {
            abbrev: '1.1.1',
          },
        }),
      },
    })

    tnock(t, 'https://new-host.artifactory.example.com')
      .get('/api/npm/npm-all/abbrev')
      .reply(200, abbrevPackument3)

    tnock(t, 'https://new-host.artifactory.example.com')
      .get('/api/npm/npm-all/abbrev/-/abbrev-1.1.1.tgz')
      .reply(200, abbrevTGZ)

    const arb = new Arborist({
      path: resolve(testdir, 'project'),
      registry: 'https://new-host.artifactory.example.com/api/npm/npm-all',
      cache: resolve(testdir, 'cache'),
      replaceRegistryHost: 'always',
    })
    await arb.reify()
  })

  t.test('registry path prepending', async t => {
    // A registry path is prepended to resolved URLs that don't already have it
    const abbrevPackument4 = JSON.stringify({
      _id: 'abbrev',
      _rev: 'lkjadflkjasdf',
      name: 'abbrev',
      'dist-tags': { latest: '1.1.1' },
      versions: {
        '1.1.1': {
          name: 'abbrev',
          version: '1.1.1',
          dist: {
            // Note: This URL has no path component that matches our registry path
            tarball: 'https://external-registry.example.com/abbrev-1.1.1.tgz',
          },
        },
      },
    })

    const testdir = t.testdir({
      project: {
        'package.json': JSON.stringify({
          name: 'myproject',
          version: '1.0.0',
          dependencies: {
            abbrev: '1.1.1',
          },
        }),
      },
    })

    // Set up the registry with a deep path
    const registryHost = 'https://registry.example.com'
    const registryPath = '/custom/deep/path/registry'
    const registry = `${registryHost}${registryPath}`

    tnock(t, registryHost)
      .get(`${registryPath}/abbrev`)
      .reply(200, abbrevPackument4)

    // This is the critical test - the tarball URL in the packument doesn't have our registry path, but when replaceRegistryHost is 'always', we should get a request to this URL which includes the registry path
    tnock(t, registryHost)
      .get(`${registryPath}/abbrev-1.1.1.tgz`)
      .reply(200, abbrevTGZ)

    const arb = new Arborist({
      path: resolve(testdir, 'project'),
      registry,
      cache: resolve(testdir, 'cache'),
      replaceRegistryHost: 'always',
    })

    await t.resolves(arb.reify(), 'reify should complete successfully')
  })

  t.test('registry path prepending with registry path being a package name prefix', async t => {
    // A registry path is prepended to resolved URLs that don't already have it
    const abbrevPackument4 = JSON.stringify({
      _id: 'abbrev',
      _rev: 'lkjadflkjasdf',
      name: 'abbrev',
      'dist-tags': { latest: '1.1.1' },
      versions: {
        '1.1.1': {
          name: 'abbrev',
          version: '1.1.1',
          dist: {
            // Note: This URL has no path component that matches our registry path
            tarball: 'https://external-registry.example.com/abbrev-1.1.1.tgz',
          },
        },
      },
    })

    const testdir = t.testdir({
      project: {
        'package.json': JSON.stringify({
          name: 'myproject',
          version: '1.0.0',
          dependencies: {
            abbrev: '1.1.1',
          },
        }),
      },
    })

    // Set up the registry with a deep path
    const registryHost = 'https://registry.example.com'
    // Note: This path is a prefix of the package name 'abbrev'
    const registryPath = '/abb'
    const registry = `${registryHost}${registryPath}`

    tnock(t, registryHost)
      .get(`${registryPath}/abbrev`)
      .reply(200, abbrevPackument4)

    // This is the critical test - the tarball URL in the packument doesn't have our registry path, but when replaceRegistryHost is 'always', we should get a request to this URL which includes the registry path
    tnock(t, registryHost)
      .get(`${registryPath}/abbrev-1.1.1.tgz`)
      .reply(200, abbrevTGZ)

    const arb = new Arborist({
      path: resolve(testdir, 'project'),
      registry,
      cache: resolve(testdir, 'cache'),
      replaceRegistryHost: 'always',
    })

    await t.resolves(arb.reify(), 'reify should complete successfully')
  })

  // Validates both URL-prefix matching modes for replace-registry-host:
  //   A) full URL with path  → entire prefix (host + old path) is replaced with registry URL
  //   B) host-only URL       → only the host is swapped, resolved path is left unchanged
  t.test('replace-registry-host as full URL with path replaces entire prefix', async t => {
    const packument = JSON.stringify({
      _id: 'abbrev',
      _rev: 'lkjadflkjasdf',
      name: 'abbrev',
      'dist-tags': { latest: '1.1.1' },
      versions: {
        '1.1.1': {
          name: 'abbrev',
          version: '1.1.1',
          dist: {
            // tarball lives under /npm/b on the old host
            tarball: 'https://old.example.com/npm/b/abbrev/-/abbrev-1.1.1.tgz',
          },
        },
      },
    })

    const testdir = t.testdir({
      project: {
        'package.json': JSON.stringify({
          name: 'myproject',
          version: '1.0.0',
          dependencies: { abbrev: '1.1.1' },
        }),
      },
    })

    // packument lookup goes through new host + new path prefix
    tnock(t, 'https://new.example.com')
      .get('/npm/a/abbrev')
      .reply(200, packument)

    // tarball: /npm/b prefix replaced with /npm/a — NOT /npm/a/npm/b/…
    tnock(t, 'https://new.example.com')
      .get('/npm/a/abbrev/-/abbrev-1.1.1.tgz')
      .reply(200, abbrevTGZ)

    const arb = new Arborist({
      path: resolve(testdir, 'project'),
      registry: 'https://new.example.com/npm/a',
      cache: resolve(testdir, 'cache'),
      replaceRegistryHost: 'https://old.example.com/npm/b',
    })

    await t.resolves(arb.reify(), 'prefix is replaced without duplication')
  })

  t.test('replace-registry-host as host-only URL leaves resolved path unchanged', async t => {
    const packument = JSON.stringify({
      _id: 'abbrev',
      _rev: 'lkjadflkjasdf',
      name: 'abbrev',
      'dist-tags': { latest: '1.1.1' },
      versions: {
        '1.1.1': {
          name: 'abbrev',
          version: '1.1.1',
          dist: {
            // tarball has its own path on the old host
            tarball: 'https://old.example.com/abbrev/-/abbrev-1.1.1.tgz',
          },
        },
      },
    })

    const testdir = t.testdir({
      project: {
        'package.json': JSON.stringify({
          name: 'myproject',
          version: '1.0.0',
          dependencies: { abbrev: '1.1.1' },
        }),
      },
    })

    // packument lookup: host swapped, path unchanged
    tnock(t, 'https://new.example.com')
      .get('/abbrev')
      .reply(200, packument)

    // tarball: host swapped only — /abbrev/-/… path is preserved as-is
    tnock(t, 'https://new.example.com')
      .get('/abbrev/-/abbrev-1.1.1.tgz')
      .reply(200, abbrevTGZ)

    const arb = new Arborist({
      path: resolve(testdir, 'project'),
      registry: 'https://new.example.com/',
      cache: resolve(testdir, 'cache'),
      // trailing slash only → host-only replacement, path left unchanged
      replaceRegistryHost: 'https://old.example.com/',
    })

    await t.resolves(arb.reify(), 'only host is replaced; resolved path is unchanged')
  })

  t.test('replace-registry-host as full URL with path does not replace non-matching path', async t => {
    const packument = JSON.stringify({
      _id: 'abbrev',
      _rev: 'lkjadflkjasdf',
      name: 'abbrev',
      'dist-tags': { latest: '1.1.1' },
      versions: {
        '1.1.1': {
          name: 'abbrev',
          version: '1.1.1',
          dist: {
            // tarball is under /npm/b, but replaceRegistryHost specifies /npm/c
            tarball: 'https://old.example.com/npm/b/abbrev/-/abbrev-1.1.1.tgz',
          },
        },
      },
    })

    const testdir = t.testdir({
      project: {
        'package.json': JSON.stringify({
          name: 'myproject',
          version: '1.0.0',
          dependencies: { abbrev: '1.1.1' },
        }),
      },
    })

    // packument comes from configured registry
    tnock(t, 'https://new.example.com')
      .get('/npm/a/abbrev')
      .reply(200, packument)

    // tarball is NOT replaced because /npm/b does not start with /npm/c
    tnock(t, 'https://old.example.com')
      .get('/npm/b/abbrev/-/abbrev-1.1.1.tgz')
      .reply(200, abbrevTGZ)

    const arb = new Arborist({
      path: resolve(testdir, 'project'),
      registry: 'https://new.example.com/npm/a',
      cache: resolve(testdir, 'cache'),
      replaceRegistryHost: 'https://old.example.com/npm/c',
    })

    await t.resolves(arb.reify(), 'non-matching path prefix leaves resolved URL unchanged')
  })

  t.test('allowRemote=none allows registry tarball under registry path without trailing slash', async t => {
    const abbrevPackument5 = JSON.stringify({
      _id: 'abbrev',
      _rev: 'lkjadflkjasdf',
      name: 'abbrev',
      'dist-tags': { latest: '1.1.1' },
      versions: {
        '1.1.1': {
          name: 'abbrev',
          version: '1.1.1',
          dist: {
            tarball: 'https://registry.example.com/npm/abbrev/-/abbrev-1.1.1.tgz',
          },
        },
      },
    })

    const testdir = t.testdir({
      project: {
        'package.json': JSON.stringify({
          name: 'myproject',
          version: '1.0.0',
          dependencies: {
            abbrev: '1.1.1',
          },
        }),
      },
    })

    tnock(t, 'https://registry.example.com')
      .get('/npm/abbrev')
      .reply(200, abbrevPackument5)

    tnock(t, 'https://registry.example.com')
      .get('/npm/abbrev/-/abbrev-1.1.1.tgz')
      .reply(200, abbrevTGZ)

    const arb = new Arborist({
      path: resolve(testdir, 'project'),
      registry: 'https://registry.example.com/npm',
      cache: resolve(testdir, 'cache'),
      allowRemote: 'none',
    })

    await t.resolves(arb.reify(), 'registry tarball under configured path is allowed')
  })

  t.test('allowRemote=none blocks same-origin tarball outside registry path', async t => {
    const abbrevPackument5 = JSON.stringify({
      _id: 'abbrev',
      _rev: 'lkjadflkjasdf',
      name: 'abbrev',
      'dist-tags': { latest: '1.1.1' },
      versions: {
        '1.1.1': {
          name: 'abbrev',
          version: '1.1.1',
          dist: {
            tarball: 'https://registry.example.com/evil/abbrev-1.1.1.tgz',
          },
        },
      },
    })

    const testdir = t.testdir({
      project: {
        'package.json': JSON.stringify({
          name: 'myproject',
          version: '1.0.0',
          dependencies: {
            abbrev: '1.1.1',
          },
        }),
      },
    })

    tnock(t, 'https://registry.example.com')
      .get('/npm/abbrev')
      .reply(200, abbrevPackument5)

    const arb = new Arborist({
      path: resolve(testdir, 'project'),
      registry: 'https://registry.example.com/npm/',
      cache: resolve(testdir, 'cache'),
      allowRemote: 'none',
    })

    await t.rejects(arb.reify(), { code: 'EALLOWREMOTE' }, 'sibling path tarball is blocked')
  })

  t.test('allowRemote=none allows same-origin tarball for root registry path', async t => {
    const abbrevPackument5 = JSON.stringify({
      _id: 'abbrev',
      _rev: 'lkjadflkjasdf',
      name: 'abbrev',
      'dist-tags': { latest: '1.1.1' },
      versions: {
        '1.1.1': {
          name: 'abbrev',
          version: '1.1.1',
          dist: {
            tarball: 'https://registry.example.com/other/abbrev-1.1.1.tgz',
          },
        },
      },
    })

    const testdir = t.testdir({
      project: {
        'package.json': JSON.stringify({
          name: 'myproject',
          version: '1.0.0',
          dependencies: {
            abbrev: '1.1.1',
          },
        }),
      },
    })

    tnock(t, 'https://registry.example.com')
      .get('/abbrev')
      .reply(200, abbrevPackument5)

    tnock(t, 'https://registry.example.com')
      .get('/other/abbrev-1.1.1.tgz')
      .reply(200, abbrevTGZ)

    const arb = new Arborist({
      path: resolve(testdir, 'project'),
      registry: 'https://registry.example.com',
      cache: resolve(testdir, 'cache'),
      allowRemote: 'none',
    })

    await t.resolves(arb.reify(), 'same-origin tarball is allowed for registry root')
  })

  t.test('allowRemote=none allows registry tarball whose resolved origin differs from the configured registry', async t => {
    // Proxy/mirror case: a committed lockfile pins resolved to the public registry while a private mirror is configured.
    // replace-registry-host rewrites the host to the configured registry at fetch time, so the effective URL is registry-mediated and must pass allow-remote=none.
    const abbrevPackumentNpmjs = JSON.stringify({
      _id: 'abbrev',
      _rev: 'lkjadflkjasdf',
      name: 'abbrev',
      'dist-tags': { latest: '1.1.1' },
      versions: {
        '1.1.1': {
          name: 'abbrev',
          version: '1.1.1',
          dist: {
            tarball: 'https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz',
          },
        },
      },
    })

    const testdir = t.testdir({
      project: {
        'package.json': JSON.stringify({
          name: 'myproject',
          version: '1.0.0',
          dependencies: {
            abbrev: '1.1.1',
          },
        }),
      },
    })

    tnock(t, 'https://registry.example.com')
      .get('/abbrev')
      .reply(200, abbrevPackumentNpmjs)

    // replace-registry-host (default 'npmjs') rewrites the npmjs.org tarball host to the configured mirror, so the fetch lands here.
    tnock(t, 'https://registry.example.com')
      .get('/abbrev/-/abbrev-1.1.1.tgz')
      .reply(200, abbrevTGZ)

    const arb = new Arborist({
      path: resolve(testdir, 'project'),
      registry: 'https://registry.example.com',
      cache: resolve(testdir, 'cache'),
      allowRemote: 'none',
    })

    await t.resolves(arb.reify(), 'mirror-fronted registry tarball is allowed under allow-remote=none')
  })

  t.test('allowRemote=none allows registry tarball with replaceRegistryHost=always', async t => {
    // replace-registry-host=always routes every registry tarball fetch through the configured registry, so the effective URL is never remote and must pass allow-remote=none.
    const abbrevPackumentNpmjs = JSON.stringify({
      _id: 'abbrev',
      _rev: 'lkjadflkjasdf',
      name: 'abbrev',
      'dist-tags': { latest: '1.1.1' },
      versions: {
        '1.1.1': {
          name: 'abbrev',
          version: '1.1.1',
          dist: {
            tarball: 'https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz',
          },
        },
      },
    })

    const testdir = t.testdir({
      project: {
        'package.json': JSON.stringify({
          name: 'myproject',
          version: '1.0.0',
          dependencies: {
            abbrev: '1.1.1',
          },
        }),
      },
    })

    tnock(t, 'https://registry.example.com')
      .get('/npm/abbrev')
      .reply(200, abbrevPackumentNpmjs)

    // always rewrites the tarball host to the configured registry and prepends the registry path.
    tnock(t, 'https://registry.example.com')
      .get('/npm/abbrev/-/abbrev-1.1.1.tgz')
      .reply(200, abbrevTGZ)

    const arb = new Arborist({
      path: resolve(testdir, 'project'),
      registry: 'https://registry.example.com/npm',
      cache: resolve(testdir, 'cache'),
      allowRemote: 'none',
      replaceRegistryHost: 'always',
    })

    await t.resolves(arb.reify(), 'registry tarball routed through the configured registry is allowed')
  })

  t.test('allowRemote=none allows registry tarball under linked install strategy', async t => {
    // The linked strategy extracts store nodes as IsolatedNode, which has no edges to recompute isRegistryDependency from.
    // The flag must be carried from the source tree node so the registry-tarball allow-remote exemption still applies.
    const abbrevPackument5 = JSON.stringify({
      _id: 'abbrev',
      _rev: 'lkjadflkjasdf',
      name: 'abbrev',
      'dist-tags': { latest: '1.1.1' },
      versions: {
        '1.1.1': {
          name: 'abbrev',
          version: '1.1.1',
          dist: {
            tarball: 'https://registry.example.com/npm/abbrev/-/abbrev-1.1.1.tgz',
          },
        },
      },
    })

    const testdir = t.testdir({
      project: {
        'package.json': JSON.stringify({
          name: 'myproject',
          version: '1.0.0',
          dependencies: {
            abbrev: '1.1.1',
          },
        }),
      },
    })

    tnock(t, 'https://registry.example.com')
      .get('/npm/abbrev')
      .reply(200, abbrevPackument5)

    tnock(t, 'https://registry.example.com')
      .get('/npm/abbrev/-/abbrev-1.1.1.tgz')
      .reply(200, abbrevTGZ)

    const arb = new Arborist({
      path: resolve(testdir, 'project'),
      registry: 'https://registry.example.com/npm',
      cache: resolve(testdir, 'cache'),
      allowRemote: 'none',
      installStrategy: 'linked',
    })

    await t.resolves(arb.reify(), 'registry tarball is allowed under linked strategy')
  })

  t.test('allowRemote=root allows root-direct remote tarball under linked install strategy', async t => {
    // The linked strategy extracts store nodes as IsolatedNode, which has no edgesIn to recompute root-ness from.
    // isRootDependency must be carried from the source tree node, otherwise allow-remote=root mis-fires on a genuine remote tarball that is a direct dep of the project root.
    const testdir = t.testdir({
      project: {
        'package.json': JSON.stringify({
          name: 'myproject',
          version: '1.0.0',
          dependencies: {
            abbrev: 'https://remote.example.com/abbrev-1.1.1.tgz',
          },
        }),
      },
    })

    tnock(t, 'https://remote.example.com')
      .get('/abbrev-1.1.1.tgz')
      .reply(200, abbrevTGZ)

    const arb = new Arborist({
      path: resolve(testdir, 'project'),
      registry: 'https://registry.example.com',
      cache: resolve(testdir, 'cache'),
      allowRemote: 'root',
      installStrategy: 'linked',
    })

    await t.resolves(arb.reify(), 'root-direct remote tarball is allowed under linked strategy with allow-remote=root')
  })

  t.test('registry with different protocol should swap protocol', async (t) => {
    const abbrevPackument4 = JSON.stringify({
      _id: 'abbrev',
      _rev: 'lkjadflkjasdf',
      name: 'abbrev',
      'dist-tags': { latest: '1.1.1' },
      versions: {
        '1.1.1': {
          name: 'abbrev',
          version: '1.1.1',
          dist: {
            // Note: This URL has no path component that matches our registry path
            tarball: 'https://external-registry.example.com/abbrev-1.1.1.tgz',
          },
        },
      },
    })

    const testdir = t.testdir({
      project: {
        'package.json': JSON.stringify({
          name: 'myproject',
          version: '1.0.0',
          dependencies: {
            abbrev: '1.1.1',
          },
        }),
      },
    })

    // Set up the registry with an http protocol
    const registryHost = 'http://registry.example.com'
    const registryPath = '/custom/deep/path/registry'
    const registry = `${registryHost}${registryPath}`

    tnock(t, registryHost)
      .get(`${registryPath}/abbrev`)
      .reply(200, abbrevPackument4)

    tnock(t, registryHost)
      .get(`${registryPath}/abbrev-1.1.1.tgz`)
      .reply(200, abbrevTGZ)

    const arb = new Arborist({
      path: resolve(testdir, 'project'),
      registry,
      cache: resolve(testdir, 'cache'),
      replaceRegistryHost: 'always',
    })

    await t.resolves(arb.reify(), 'reify should complete successfully when protocol changes from https to http')
  })
})

t.test('install strategy linked', async (t) => {
  const Arborist = require('../../lib/index.js')
  const abbrev = resolve(__dirname,
    '../fixtures/registry-mocks/content/abbrev/-/abbrev-1.1.1.tgz')
  const abbrevTGZ = fs.readFileSync(abbrev)

  const abbrevPackument = JSON.stringify({
    _id: 'abbrev',
    _rev: 'lkjadflkjasdf',
    name: 'abbrev',
    'dist-tags': { latest: '1.1.1' },
    versions: {
      '1.1.1': {
        name: 'abbrev',
        version: '1.1.1',
        dist: {
          tarball: 'https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz',
        },
      },
    },
  })

  t.test('should install package linked', async (t) => {
    const testdir = t.testdir({
      project: {
        'package.json': JSON.stringify({
          name: 'myproject',
          version: '1.0.0',
          dependencies: {
            abbrev: '1.1.1',
          },
        }),
      },
    })

    tnock(t, 'https://registry.npmjs.org')
      .get('/abbrev')
      .reply(200, abbrevPackument)

    tnock(t, 'https://registry.npmjs.org')
      .get('/abbrev/-/abbrev-1.1.1.tgz')
      .reply(200, abbrevTGZ)

    const path = resolve(testdir, 'project')
    const arb = new Arborist({
      path,
      registry: 'https://registry.npmjs.org',
      cache: resolve(testdir, 'cache'),
      installStrategy: 'linked',
    })
    await arb.reify({ installStrategy: 'linked' })
    const abbrev = fs.lstatSync(resolve(path, 'node_modules', 'abbrev'))
    const store = fs.lstatSync(resolve(path, 'node_modules', '.store'))
    t.ok(store.isDirectory(), 'abbrev got installed')
    t.ok(abbrev.isSymbolicLink(), 'abbrev got installed')
  })

  t.test('hidden lockfile records the linked .store layout and round-trips', async t => {
    // Regression for #9612: the hidden lockfile must record the on-disk .store/symlink layout so it round-trips as a valid cache.
    const Shrinkwrap = require('../../lib/shrinkwrap.js')
    const path = t.testdir({
      'package.json': JSON.stringify({
        name: 'root',
        version: '1.0.0',
        // once depends on wrappy, so the store has a transitive symlink to validate
        dependencies: { once: '1.4.0' },
      }),
    })

    createRegistry(t, true)
    await reify(path, { installStrategy: 'linked' })

    const hidden = require(resolve(path, 'node_modules/.package-lock.json'))
    const locs = Object.keys(hidden.packages)
    // the layout is recorded at .store paths, not hoisted node_modules/<name>
    t.ok(locs.some(l => /^node_modules\/\.store\/once@/.test(l)),
      'once is recorded under .store')
    t.ok(locs.some(l => /^node_modules\/\.store\/.*\/node_modules\/wrappy$/.test(l)),
      'the transitive wrappy symlink is recorded inside the store')
    t.notOk(locs.includes('node_modules/wrappy'),
      'wrappy is not recorded at a hoisted path')

    // the cache is accepted on reload: assertNoNewer matches it against the real disk layout
    const meta = await Shrinkwrap.load({ path, hiddenLockfile: true })
    t.equal(meta.loadedFromDisk, true, 'hidden lockfile is a valid cache of the disk layout')

    // loadActual must reconstruct the tree from the cache with once->wrappy resolved through the store.
    const actual = await newArb({ path, installStrategy: 'linked' }).loadActual()
    const onceNode = [...actual.inventory.values()].find(n => n.name === 'once' && !n.isLink)
    t.ok(onceNode, 'once is in the cached actual tree')
    const wrappyEdge = onceNode.edgesOut.get('wrappy')
    t.ok(wrappyEdge && !wrappyEdge.missing, 'once resolves its wrappy dep through the cached store layout')
  })

  t.test('hidden lockfile round-trips with an undeclared workspace', async t => {
    // Regression for #9612: an undeclared workspace materializes deps in its own node_modules but isn't linked into root, and the cache must still validate that subtree.
    const Shrinkwrap = require('../../lib/shrinkwrap.js')
    const path = t.testdir({
      'package.json': JSON.stringify({
        name: 'host',
        version: '1.0.0',
        workspaces: ['packages/a'],
        // root does not depend on the workspace, so it stays undeclared
      }),
      packages: {
        a: {
          'package.json': JSON.stringify({
            name: 'a',
            version: '1.0.0',
            dependencies: { once: '1.4.0' },
          }),
        },
      },
    })

    createRegistry(t, true)
    await reify(path, { installStrategy: 'linked' })

    // the workspace's dep is materialized under its own node_modules, not the root's
    t.ok(fs.lstatSync(resolve(path, 'packages/a/node_modules/once')).isSymbolicLink(),
      'once is symlinked into the workspace node_modules')
    t.notOk(fs.existsSync(resolve(path, 'node_modules/a')),
      'the undeclared workspace is not symlinked into the root node_modules')

    const meta = await Shrinkwrap.load({ path, hiddenLockfile: true })
    t.equal(meta.loadedFromDisk, true, 'hidden lockfile validates the undeclared workspace subtree')
  })

  t.test('hidden lockfile round-trips with an undeclared workspace and no store entries', async t => {
    // Regression for #9612: with only local deps there is no .store, so the cache must still walk the undeclared workspace subtree to validate it.
    const Shrinkwrap = require('../../lib/shrinkwrap.js')
    const path = t.testdir({
      'package.json': JSON.stringify({
        name: 'host',
        version: '1.0.0',
        workspaces: ['packages/w', 'packages/a', 'packages/b'],
        // only w is declared; a and b stay undeclared, and a depends on b locally
        dependencies: { w: '1.0.0' },
      }),
      packages: {
        w: { 'package.json': JSON.stringify({ name: 'w', version: '1.0.0' }) },
        a: {
          'package.json': JSON.stringify({
            name: 'a',
            version: '1.0.0',
            dependencies: { b: '1.0.0' },
          }),
        },
        b: { 'package.json': JSON.stringify({ name: 'b', version: '1.0.0' }) },
      },
    })

    createRegistry(t, false)
    await reify(path, { installStrategy: 'linked' })

    t.notOk(fs.existsSync(resolve(path, 'node_modules/.store')),
      'no store is created for an all-local graph')
    t.ok(fs.lstatSync(resolve(path, 'packages/a/node_modules/b')).isSymbolicLink(),
      'the undeclared workspace links its local dep')

    const meta = await Shrinkwrap.load({ path, hiddenLockfile: true })
    t.equal(meta.loadedFromDisk, true, 'hidden lockfile validates the subtree without any store entry')

    // loadActual must reconstruct the undeclared workspace from the cache with its local dep resolved.
    const actual = await newArb({ path, installStrategy: 'linked' }).loadActual()
    const aNode = [...actual.inventory.values()].find(n => n.name === 'a' && !n.isLink)
    const bEdge = aNode && aNode.edgesOut.get('b')
    t.ok(bEdge && !bEdge.missing, 'the undeclared workspace resolves its local dep through the cache')
  })

  t.test('does not re-create a workspace dir removed from manifest', async t => {
    // Regression test for https://github.com/npm/cli/issues/9331
    const path = t.testdir({
      'package.json': JSON.stringify({
        name: 'host',
        version: '1.0.0',
        workspaces: ['packages/a', 'packages/b'],
      }),
      packages: {
        a: { 'package.json': JSON.stringify({ name: 'a', version: '1.0.0' }) },
        b: { 'package.json': JSON.stringify({ name: 'b', version: '1.0.0' }) },
      },
    })

    createRegistry(t, false)
    await reify(path, { installStrategy: 'linked' })

    // Drop workspace b: remove its directory and its entry from package.json.
    fs.rmSync(resolve(path, 'packages/b'), { recursive: true, force: true })
    fs.writeFileSync(resolve(path, 'package.json'), JSON.stringify({
      name: 'host',
      version: '1.0.0',
      workspaces: ['packages/a'],
    }))

    await reify(path, { installStrategy: 'linked' })

    t.notOk(
      fs.existsSync(resolve(path, 'packages/b')),
      'packages/b should remain absent after reinstall'
    )
  })

  t.test('removes stale .bin shims after uninstall, keeps surviving ones', async t => {
    // Regression test for https://github.com/npm/cli/issues/9613
    const path = t.testdir({
      'package.json': JSON.stringify({ name: 'un', version: '1.0.0' }),
    })
    createRegistry(t, true)
    const binDir = resolve(path, 'node_modules/.bin')
    const rbin = resolve(binDir, 'rimraf')
    const sbin = resolve(binDir, 'semver')

    await reify(path, { add: ['rimraf@2.7.1', 'semver@7.3.2'], installStrategy: 'linked' })
    // lstatSync throws if missing; don't assert symlink since Windows shims are regular files.
    t.ok(fs.lstatSync(rbin), 'rimraf shim created')
    t.ok(fs.lstatSync(sbin), 'semver shim created')

    // Plant Windows shim files alongside the POSIX symlinks to cover both layouts: stale (rimraf) and surviving (semver).
    const rcmd = resolve(binDir, 'rimraf.cmd')
    const rps1 = resolve(binDir, 'rimraf.ps1')
    const scmd = resolve(binDir, 'semver.cmd')
    const sps1 = resolve(binDir, 'semver.ps1')
    fs.writeFileSync(rcmd, '@echo off\r\n"%~dp0\\..\\rimraf\\bin.js" %*\r\n')
    fs.writeFileSync(rps1, '& "$basedir/../rimraf/bin.js" $args\r\n')
    fs.writeFileSync(scmd, '@echo off\r\n"%~dp0\\..\\semver\\bin\\semver.js" %*\r\n')
    fs.writeFileSync(sps1, '& "$basedir/../semver/bin/semver.js" $args\r\n')

    await reify(path, { rm: ['rimraf'], installStrategy: 'linked' })
    t.throws(() => fs.lstatSync(rbin), 'stale rimraf symlink removed')
    t.throws(() => fs.lstatSync(rcmd), 'stale rimraf.cmd removed')
    t.throws(() => fs.lstatSync(rps1), 'stale rimraf.ps1 removed')
    t.ok(fs.lstatSync(sbin), 'surviving semver shim kept')
    t.ok(fs.lstatSync(scmd), 'surviving semver.cmd kept')
    t.ok(fs.lstatSync(sps1), 'surviving semver.ps1 kept')
  })

  t.test('switching hoisted -> linked removes stale real top-level dirs', async t => {
    // Regression test for https://github.com/npm/cli/issues/9615
    const path = t.testdir({
      'package.json': JSON.stringify({
        name: 'sw', version: '1.0.0', dependencies: { minimatch: '3.0.4' },
      }),
    })
    createRegistry(t, true)

    // A hoisted install lays the transitive deps out as real top-level dirs.
    await reify(path, { installStrategy: 'hoisted' })
    const nm = resolve(path, 'node_modules')
    for (const dep of ['balanced-match', 'brace-expansion', 'concat-map']) {
      t.ok(fs.statSync(resolve(nm, dep)).isDirectory(), `${dep} is a real dir under hoisted`)
    }

    // Plant a stale scoped real package to cover the scoped removal and empty-scope pruning path.
    const scopedPkg = resolve(nm, '@scope/stale')
    fs.mkdirSync(scopedPkg, { recursive: true })
    fs.writeFileSync(resolve(scopedPkg, 'package.json'),
      JSON.stringify({ name: '@scope/stale', version: '1.0.0' }))
    // A non-package real dir must be preserved.
    fs.mkdirSync(resolve(nm, 'not-a-package'), { recursive: true })

    // Switching to linked must remove those stale real dirs, leaving only the symlink + .store.
    await reify(path, { installStrategy: 'linked' })
    for (const dep of ['balanced-match', 'brace-expansion', 'concat-map']) {
      t.notOk(fs.existsSync(resolve(nm, dep)), `${dep} stale real dir removed after switch to linked`)
    }
    t.notOk(fs.existsSync(scopedPkg), 'stale scoped real package removed')
    t.notOk(fs.existsSync(resolve(nm, '@scope')), 'emptied scope dir pruned')
    t.ok(fs.existsSync(resolve(nm, 'not-a-package')), 'non-package real dir preserved')
    t.ok(fs.lstatSync(resolve(nm, 'minimatch')).isSymbolicLink(), 'minimatch is a store symlink')
    t.ok(fs.statSync(resolve(nm, '.store')).isDirectory(), '.store created')
  })

  t.test('switching linked -> hoisted removes the stale .store dir', async t => {
    // Regression test for https://github.com/npm/cli/issues/9615
    const path = t.testdir({
      'package.json': JSON.stringify({
        name: 'sw', version: '1.0.0', dependencies: { minimatch: '3.0.4' },
      }),
    })
    createRegistry(t, true)

    await reify(path, { installStrategy: 'linked' })
    const nm = resolve(path, 'node_modules')
    t.ok(fs.statSync(resolve(nm, '.store')).isDirectory(), '.store created under linked')

    // A hoisted install must not leave the linked store behind.
    await reify(path, { installStrategy: 'hoisted' })
    t.notOk(fs.existsSync(resolve(nm, '.store')), '.store removed after switch to hoisted')
    t.ok(fs.statSync(resolve(nm, 'balanced-match')).isDirectory(), 'transitive dep hoisted to a real dir')
  })

  t.test('a partial hoisted install does not wipe a still-referenced linked .store', async t => {
    // Regression test for https://github.com/npm/cli/issues/9615
    // A workspace-filtered or --workspaces=false hoisted install must not remove the root .store, since out-of-scope workspaces still link into it.
    const path = t.testdir({
      'package.json': JSON.stringify({
        name: 'root', version: '1.0.0', workspaces: ['packages/*'],
      }),
      packages: {
        // a is the out-of-scope workspace that keeps a live link into the store.
        a: { 'package.json': JSON.stringify({ name: 'a', version: '1.0.0', dependencies: { minimatch: '3.0.4' } }) },
        b: { 'package.json': JSON.stringify({ name: 'b', version: '1.0.0' }) },
      },
    })
    createRegistry(t, true)
    const nm = resolve(path, 'node_modules')
    const aLink = resolve(path, 'packages/a/node_modules/minimatch')
    // a's dep resolves through the root .store, so deleting the store would break it.
    const stillLinked = msg => t.ok(
      fs.lstatSync(aLink).isSymbolicLink() && fs.existsSync(fs.realpathSync(aLink)), msg)

    await reify(path, { installStrategy: 'linked' })
    t.ok(fs.statSync(resolve(nm, '.store')).isDirectory(), '.store created under linked')
    t.match(fs.realpathSync(aLink), /node_modules[\\/]\.store[\\/]/, 'workspace a links into the store')

    // Filter to workspace b: a is out of scope and must keep its live store link.
    await reify(path, { installStrategy: 'hoisted', workspaces: ['b'] })
    t.ok(fs.existsSync(resolve(nm, '.store')), '.store kept during a workspace-filtered install')
    stillLinked('workspace a still resolves through the store after the filtered install')

    await reify(path, { installStrategy: 'hoisted', workspacesEnabled: false })
    t.ok(fs.existsSync(resolve(nm, '.store')), '.store kept during a --workspaces=false install')
    stillLinked('workspace a still resolves through the store after the --workspaces=false install')

    await reify(path, { installStrategy: 'hoisted' })
    t.notOk(fs.existsSync(resolve(nm, '.store')), '.store removed by a full hoisted install')
  })
})

t.test('linked strategy --workspaces=false and --include-workspace-root do not crash', async t => {
  // Regression for #9614. Under linked, the root-dep filter nodes came from the real actual tree, not the synthesized diff wrapper, tripping Diff.calculate's "invalid filterNode" guard.
  const manifest = deps => JSON.stringify({
    name: 'root',
    version: '1.0.0',
    workspaces: ['packages/*'],
    dependencies: deps,
  })
  const path = t.testdir({
    'package.json': manifest({ abbrev: '1.1.1', wrappy: '1.0.2' }),
    packages: {
      a: {
        'package.json': JSON.stringify({ name: 'a', version: '1.0.0' }),
      },
    },
  })

  createRegistry(t, true)
  await reify(path, { installStrategy: 'linked' })

  // --workspaces=false: only root deps are in scope.
  await t.resolves(
    reify(path, { installStrategy: 'linked', workspacesEnabled: false }),
    '--workspaces=false does not crash'
  )

  // -w a --include-workspace-root: workspace a plus root deps in scope.
  await t.resolves(
    reify(path, { installStrategy: 'linked', workspaces: ['a'], includeWorkspaceRoot: true }),
    '-w a --include-workspace-root does not crash'
  )

  t.ok(fs.lstatSync(resolve(path, 'node_modules/abbrev')).isSymbolicLink(), 'root dep still linked')

  // Dropping the actual-side filter nodes must not stop a filtered install from pruning a removed root dep.
  fs.writeFileSync(resolve(path, 'package.json'), manifest({ abbrev: '1.1.1' }))
  await reify(path, { installStrategy: 'linked', workspacesEnabled: false })
  t.notOk(fs.existsSync(resolve(path, 'node_modules/wrappy')), 'removed root dep pruned under filtered install')
  t.ok(fs.lstatSync(resolve(path, 'node_modules/abbrev')).isSymbolicLink(), 'remaining root dep still linked')
})

t.test('global install ignores a per-call linked strategy', async t => {
  // Regression for #9614. Global installs are normalized to shallow; a per-call installStrategy:'linked' must not re-engage the linked path, which would trip Diff.calculate's filterNode guard on re-install and delete the global package.
  const path = t.testdir({ lib: {} })
  const lib = resolve(path, 'lib')
  const nm = resolve(lib, 'node_modules')

  createRegistry(t, true)
  await reify(lib, { add: ['abbrev@1.1.1'], global: true })

  // Re-install the already-present package under linked: must not crash and must not remove it.
  await t.resolves(
    reify(lib, { add: ['abbrev@1.1.1'], global: true, installStrategy: 'linked' }),
    'global re-install under linked does not crash'
  )
  t.strictSame(fs.readdirSync(nm), ['abbrev'], 'global package retained, no .store created')
})

t.test('linked strategy exposes store node_modules via NODE_PATH for lifecycle scripts', async t => {
  // Regression for #9549. In the linked strategy a store package's deps are symlinked siblings in its store node_modules.
  // A separate bin invoked by the script (e.g. napi-postinstall) resolves modules from its own store realpath and cannot see them, so npm exposes them via NODE_PATH.
  const Arborist = require('../../lib/index.js')
  const pacote = require('pacote')

  const testdir = t.testdir({
    src: {
      'package.json': JSON.stringify({
        name: 'has-postinstall',
        version: '1.0.0',
        scripts: { postinstall: 'node -e ""' },
      }),
    },
    project: {
      'package.json': JSON.stringify({
        name: 'myproject',
        version: '1.0.0',
        dependencies: { 'has-postinstall': '1.0.0' },
      }),
    },
  })

  const tgz = await pacote.tarball(resolve(testdir, 'src'), { Arborist })

  const packument = JSON.stringify({
    _id: 'has-postinstall',
    name: 'has-postinstall',
    'dist-tags': { latest: '1.0.0' },
    versions: {
      '1.0.0': {
        name: 'has-postinstall',
        version: '1.0.0',
        hasInstallScript: true,
        scripts: { postinstall: 'node -e ""' },
        dist: {
          tarball: 'https://registry.npmjs.org/has-postinstall/-/has-postinstall-1.0.0.tgz',
        },
      },
    },
  })

  tnock(t, 'https://registry.npmjs.org')
    .get('/has-postinstall')
    .reply(200, packument)

  tnock(t, 'https://registry.npmjs.org')
    .get('/has-postinstall/-/has-postinstall-1.0.0.tgz')
    .reply(200, tgz)

  const path = resolve(testdir, 'project')
  const arb = new Arborist({
    path,
    registry: 'https://registry.npmjs.org',
    cache: resolve(testdir, 'cache'),
    installStrategy: 'linked',
    dangerouslyAllowAllScripts: true,
  })
  await arb.reify()

  const run = [...arb.scriptsRun]
    .find(s => s.pkg.name === 'has-postinstall' && s.event === 'postinstall')
  t.ok(run, 'postinstall ran for the store package')
  t.match(run.path, /[\\/]\.store[\\/]/, 'script ran on the store entry')
  // Assert the leading entry: the fix prepends the store node_modules to any pre-existing NODE_PATH (e.g. the coverage harness on Windows CI).
  const [firstNodePath] = run.env.NODE_PATH.split(delimiter)
  t.equal(firstNodePath, resolve(run.path, '..'),
    'NODE_PATH leads with the store node_modules holding the package deps')
})

t.test('workspace installs retain existing versions with newer package specs', async t => {
  const path = t.testdir({
    'package.json': JSON.stringify({
      workspaces: [
        'packages/*',
      ],
      overrides: {
        'doesnt-matter-can-be-anything': '1.2.3',
      },
    }),
    packages: {
      'my-cool-package': {
        'package.json': JSON.stringify({}),
      },
      'another-cool-package': {
        'package.json': JSON.stringify({}),
      },
    },
  })

  createRegistry(t, true)

  // Step 1: Install abbrev@1.0.4 in my-cool-package
  await reify(path, {
    add: ['abbrev@1.0.4'],
    // setting savePrefix to '' is exactly what the --save-exact flag does in definitions.js
    savePrefix: '',
    workspaces: ['my-cool-package'],
  })

  // Verify hoisted installation
  const rootNodeModules = resolve(path, 'node_modules/abbrev/package.json')
  t.ok(fs.existsSync(rootNodeModules), 'abbrev should be hoisted to root node_modules')

  const hoistedPkg = JSON.parse(fs.readFileSync(rootNodeModules, 'utf8'))
  t.equal(hoistedPkg.version, '1.0.4', 'hoisted version should be 1.0.4')

  // Check my-cool-package package.json
  const myPackageJson = JSON.parse(fs.readFileSync(
    resolve(path, 'packages/my-cool-package/package.json'), 'utf8'))
  t.same(myPackageJson.dependencies, { abbrev: '1.0.4' },
    'my-cool-package should have abbrev@1.0.4 in dependencies')

  // Step 2: Install abbrev@1.1.1 in another-cool-package
  await reify(path, {
    add: ['abbrev@1.1.1'],
    savePrefix: '',
    workspaces: ['another-cool-package'],
  })

  // Verify un-hoisted installation
  const anotherNodeModules = resolve(path, 'packages/another-cool-package/node_modules/abbrev/package.json')
  t.ok(fs.existsSync(anotherNodeModules), 'abbrev@1.1.1 should be installed in another-cool-package/node_modules')

  const unhoistedPkg = JSON.parse(fs.readFileSync(anotherNodeModules, 'utf8'))
  t.equal(unhoistedPkg.version, '1.1.1', 'unhoisted version should be 1.1.1')

  // Check another-cool-package package.json
  const anotherPackageJson = JSON.parse(fs.readFileSync(
    resolve(path, 'packages/another-cool-package/package.json'), 'utf8'))
  t.same(anotherPackageJson.dependencies, { abbrev: '1.1.1' },
    'another-cool-package should have abbrev@1.1.1 in dependencies')

  // Step 3: Install abbrev@1.0.4 in another-cool-package
  await reify(path, {
    add: ['abbrev@1.0.4'],
    savePrefix: '',
    workspaces: ['another-cool-package'],
  })

  t.ok(fs.existsSync(rootNodeModules), 'abbrev@1.0.4 should still be hoisted to root node_modules')
  t.notOk(fs.existsSync(anotherNodeModules), 'abbrev@1.1.1 should be removed from another-cool-package/node_modules')

  // Check another-cool-package package.json - should now be updated to 1.0.4
  const updatedPackageJson = JSON.parse(fs.readFileSync(
    resolve(path, 'packages/another-cool-package/package.json'), 'utf8'))
  t.same(updatedPackageJson.dependencies, { abbrev: '1.0.4' },
    'another-cool-package package.json should be updated to abbrev@1.0.4')
})

for (const poisoned of ['../../../escape-target', '@evil/../../../escape-target']) {
  t.test(`install strategy linked sanitizes traversal in lockfile name (${poisoned})`, async t => {
    // a poisoned lockfile name field would otherwise escape node_modules/.store
    const testDir = t.testdir({
      'package.json': JSON.stringify({
        dependencies: {
          abbrev: '1.1.1',
        },
      }),
      'package-lock.json': JSON.stringify({
        lockfileVersion: 3,
        requires: true,
        packages: {
          '': {
            dependencies: {
              abbrev: '1.1.1',
            },
          },
          'node_modules/abbrev': {
            name: poisoned,
            version: '1.1.1',
            resolved: 'https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz',
            integrity: 'sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q==',
          },
        },
      }),
    })

    const arb = new Arborist({
      path: testDir,
      registry: 'https://registry.npmjs.org',
      cache: resolve(testDir, 'cache'),
      installStrategy: 'linked',
      packageLockOnly: true,
    })
    await arb.reify({ installStrategy: 'linked', packageLockOnly: true })

    const external = arb.idealGraph.external
    t.equal(external.length, 1, 'one external dep planned')

    const pkgName = external[0].packageName
    t.notMatch(pkgName, /\.\./, 'packageName has no traversal segments')
    t.ok(!pkgName.includes('/') || pkgName.startsWith('@'),
      'packageName is a single segment (or @scope/name)')

    // joining the sanitized name into the .store layout must not escape
    const storePrefix = resolve(testDir, 'node_modules/.store/key/node_modules')
    const projected = resolve(storePrefix, pkgName)
    t.ok(projected.startsWith(storePrefix), 'projected path stays inside .store')

    // belt-and-suspenders: nothing should have been written outside testDir,
    // even if a future change starts materializing paths during reify
    t.notOk(fs.existsSync(resolve(testDir, '..', 'escape-target')),
      'no escape-target leaked one level above testDir')
    t.notOk(fs.existsSync(resolve(testDir, '..', '..', 'escape-target')),
      'no escape-target leaked two levels above testDir')
    t.notOk(fs.existsSync(resolve(testDir, '..', '..', '..', 'escape-target')),
      'no escape-target leaked three levels above testDir')
  })
}

for (const poisoned of ['../../../escape-target', '@evil/../../../escape-target']) {
  t.test(`install strategy linked sanitizes traversal in shrinkwrapped lockfile name (${poisoned})`, async t => {
    // the hasShrinkwrap branch in #externalProxy materializes
    // node_modules/.store/<name>@<version> via mkdirSync before any other
    // check, so a poisoned name in a shrinkwrapped entry would escape
    // node_modules/.store on disk without sanitization
    const testDir = t.testdir({
      'package.json': JSON.stringify({
        dependencies: {
          abbrev: '1.1.1',
        },
      }),
      'package-lock.json': JSON.stringify({
        lockfileVersion: 3,
        requires: true,
        packages: {
          '': {
            dependencies: {
              abbrev: '1.1.1',
            },
          },
          'node_modules/abbrev': {
            name: poisoned,
            version: '1.1.1',
            hasShrinkwrap: true,
            resolved: 'https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz',
            integrity: 'sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q==',
          },
        },
      }),
    })

    const arb = new Arborist({
      path: testDir,
      registry: 'https://registry.npmjs.org',
      cache: resolve(testDir, 'cache'),
      installStrategy: 'linked',
      packageLockOnly: true,
    })
    // pacote.extract may fail in this offline test setup; the mkdirSync that
    // runs before it is what we care about and runs unconditionally
    try {
      await arb.reify({ installStrategy: 'linked', packageLockOnly: true })
    } catch {
      // expected in offline test setup
    }

    // the sanitized store entry must land inside testDir/node_modules/.store
    t.ok(fs.existsSync(resolve(testDir, 'node_modules/.store/escape-target@1.1.1')),
      'sanitized .store/escape-target@1.1.1 created inside the project')

    // and no escape-target@1.1.1 directory should appear above testDir
    t.notOk(fs.existsSync(resolve(testDir, '..', 'escape-target@1.1.1')),
      'no escape-target@1.1.1 leaked one level above testDir')
    t.notOk(fs.existsSync(resolve(testDir, '..', '..', 'escape-target@1.1.1')),
      'no escape-target@1.1.1 leaked two levels above testDir')
    t.notOk(fs.existsSync(resolve(testDir, '..', '..', '..', 'escape-target@1.1.1')),
      'no escape-target@1.1.1 leaked three levels above testDir')
  })
}

t.test('externalOptionalDependencies excludes inert optional node with installStrategy linked', async t => {
  const testDir = t.testdir({
    'package.json': JSON.stringify({
      optionalDependencies: {
        abbrev: '1.1.1',
      },
    }),
    'package-lock.json': JSON.stringify({
      lockfileVersion: 2,
      requires: true,
      packages: {
        '': {
          optionalDependencies: {
            abbrev: '1.1.1',
          },
        },
        'node_modules/abbrev': {
          version: '1.1.1',
          resolved: 'https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz',
          integrity: 'sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q==',
          dev: true,
          cpu: ['not-your-cpu'],
        },
      },
      optionalDependencies: {
        abbrev: {
          version: '1.1.1',
          resolved: 'https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz',
          integrity: 'sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q==',
          dev: true,
          cpu: ['not-your-cpu'],
        },
      },
    }),
  })

  const arb = new Arborist({
    path: testDir,
    registry: 'https://registry.npmjs.org',
    cache: resolve(testDir, 'cache'),
    installStrategy: 'linked',
  })
  await arb.reify({ installStrategy: 'linked' })

  // Assert that the optional inert node does not appear in externalOptionalDependencies
  t.notOk(
    arb.idealGraph.externalOptionalDependencies &&
    arb.idealGraph.externalOptionalDependencies.some(n => n && n.name === 'abbrev'),
    'inert optional dependency should not appear in externalOptionalDependencies'
  )

  // And verify that it is not installed on disk
  t.throws(
    () => fs.lstatSync(resolve(testDir, 'node_modules', 'abbrev')),
    { code: 'ENOENT' },
    'inert optional node should not be installed'
  )

  t.end()
})
