chore: failing test for install links and package lock only (#6150)

Ref: #5967

smoke-tests/test/install-links-package-lock-only.js

@@ -0,0 +1,82 @@
+
+const t = require('tap')
+const setup = require('./fixtures/setup.js')
+
+t.test('install links with package lock only', async t => {
+  const setupTest = async (t) => {
+    const mock = await setup(t, {
+      testdir: {
+        project: {
+          'package.json': {
+            name: 'root',
+            version: '1.0.0',
+            workspaces: ['workspaces/*'],
+          },
+          workspaces: {
+            pkg1: {
+              'package.json': {
+                name: '@npmcli/pkg1',
+                version: '1.0.0',
+                dependencies: { '@npmcli/pkg3': '^1.0.0' },
+              },
+            },
+            pkg2: {
+              'package.json': {
+                name: '@npmcli/pkg2',
+                version: '1.0.0',
+                dependencies: { '@npmcli/pkg3': '^1.0.0' },
+              },
+            },
+            pkg3: {
+              'package.json': {
+                name: '@npmcli/pkg3',
+                version: '1.0.0',
+              },
+            },
+          },
+        },
+      },
+    })
+    const { npm } = mock
+
+    // generate an initially valid lockfile
+    await npm('install', '--package-lock-only', '--install-links=false')
+
+    // manually set version and semver ranges for pkg3
+    await npm('pkg', 'set', '--workspace=@npmcli/pkg1', 'dependencies.@npmcli/pkg3=^1.0.1')
+    await npm('pkg', 'set', '--workspace=@npmcli/pkg2', 'dependencies.@npmcli/pkg3=^1.0.1')
+    await npm('pkg', 'set', '--workspace=@npmcli/pkg3', 'version=1.0.1')
+
+    return mock
+  }
+
+  await t.test('updates package lock with install-links=false', async t => {
+    const { npm, readFile } = await setupTest(t)
+
+    await npm('install', '--package-lock-only', '--install-links=false')
+
+    const lock = await readFile('package-lock.json')
+    t.equal(lock.packages['workspaces/pkg3'].version, '1.0.1')
+  })
+
+  // See https://github.com/npm/cli/issues/5967 for full bug
+  // change to t.test when this gets fixed
+  await t.todo('updates package lock with install-links=true', async t => {
+    const { npm, readFile, registry } = await setupTest(t)
+
+    // TODO: this test should pass the same as the previous one. For debugging
+    // purposes the @npmcli/pkg3 package is mocked with only version 1.0.0 so
+    // the `npm install` command will fail, instead of nock failing for the
+    // missing request. But a proper fix for this will not need any registry
+    // requests mocked.
+    await registry.package({
+      manifest: registry.manifest({ name: '@npmcli/pkg3', versions: ['1.0.0'] }),
+      times: 1,
+    })
+
+    await npm('install', '--package-lock-only', '--install-links=true')
+
+    const lock = await readFile('package-lock.json')
+    t.equal(lock.packages['workspaces/pkg3'].version, '1.0.1')
+  })
+})