feat(cli): Extend existing list command to output only a list of file names

docs/guide/cli.md

@@ -86,6 +86,17 @@ vitest list filename.spec.ts -t="some-test" --json=./file.json
 
 If `--json` flag doesn't receive a value, it will output the JSON into stdout.
 
+You also can pass down `--filesOnly` flag to print the test files only:
+
+```bash
+vitest list --filesOnly
+```
+
+```txt
+tests/test1.test.ts
+tests/test2.test.ts
+```
+
 ## Options
 
 ::: tip

packages/vitest/LICENSE.md

@@ -1235,6 +1235,35 @@ Repository: sindresorhus/p-locate
 
 ---------------------------------------
 
+## package-manager-detector
+License: MIT
+By: Anthony Fu
+Repository: git+https://github.com/antfu-collective/package-manager-detector.git
+
+> MIT License
+>
+> Copyright (c) 2020-PRESENT Anthony Fu <https://github.com/antfu>
+>
+> Permission is hereby granted, free of charge, to any person obtaining a copy
+> of this software and associated documentation files (the "Software"), to deal
+> in the Software without restriction, including without limitation the rights
+> to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+> copies of the Software, and to permit persons to whom the Software is
+> furnished to do so, subject to the following conditions:
+>
+> The above copyright notice and this permission notice shall be included in all
+> copies or substantial portions of the Software.
+>
+> THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+> IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+> FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+> AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+> LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+> OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+> SOFTWARE.
+
+---------------------------------------
+
 ## picomatch
 License: MIT
 By: Jon Schlinkert

packages/vitest/src/node/cli/cac.ts

@@ -300,24 +300,30 @@ async function collect(mode: VitestRunMode, cliFilters: string[], options: CliOp
   catch {}
 
   try {
-    const { prepareVitest, processCollected } = await import('./cli-api')
+    const { prepareVitest, processCollected, outputFileList } = await import('./cli-api')
     const ctx = await prepareVitest(mode, {
       ...normalizeCliOptions(options),
       watch: false,
       run: true,
     })
+    if (!options.filesOnly) {
+      const { tests, errors } = await ctx.collect(cliFilters.map(normalize))
+
+      if (errors.length) {
+        console.error('\nThere were unhandled errors during test collection')
+        errors.forEach(e => console.error(e))
+        console.error('\n\n')
+        await ctx.close()
+        return
+      }
 
-    const { tests, errors } = await ctx.collect(cliFilters.map(normalize))
-
-    if (errors.length) {
-      console.error('\nThere were unhandled errors during test collection')
-      errors.forEach(e => console.error(e))
-      console.error('\n\n')
-      await ctx.close()
-      return
+      processCollected(ctx, tests, options)
+    }
+    else {
+      const files = await ctx.listFiles(cliFilters.map(normalize))
+      outputFileList(files, options)
     }
 
-    processCollected(ctx, tests, options)
     await ctx.close()
   }
   catch (e) {

packages/vitest/src/node/cli/cli-api.ts

@@ -12,6 +12,7 @@ import type { Vitest, VitestOptions } from '../core'
 import { FilesNotFoundError, GitNotFoundError } from '../errors'
 import { getNames, getTests } from '../../utils'
 import type { UserConfig, VitestEnvironment, VitestRunMode } from '../types/config'
+import type { WorkspaceSpec } from '../pool'
 
 export interface CliOptions extends UserConfig {
   /**
@@ -26,6 +27,10 @@ export interface CliOptions extends UserConfig {
    * Output collected tests as JSON or to a file
    */
   json?: string | boolean
+  /**
+   * Output collected test files only
+   */
+  filesOnly?: boolean
 }
 
 /**
@@ -184,6 +189,48 @@ export function processCollected(ctx: Vitest, files: File[], options: CliOptions
   return formatCollectedAsString(files).forEach(test => console.log(test))
 }
 
+export function outputFileList(files: WorkspaceSpec[], options: CliOptions) {
+  if (typeof options.json !== 'undefined') {
+    return outputJsonFileList(files, options)
+  }
+
+  return formatFilesAsString(files).map(file => console.log(file))
+}
+
+function outputJsonFileList(files: WorkspaceSpec[], options: CliOptions) {
+  if (typeof options.json === 'boolean') {
+    return console.log(JSON.stringify(formatFilesAsJSON(files), null, 2))
+  }
+  if (typeof options.json === 'string') {
+    const jsonPath = resolve(options.root || process.cwd(), options.json)
+    mkdirSync(dirname(jsonPath), { recursive: true })
+    writeFileSync(jsonPath, JSON.stringify(formatFilesAsJSON(files), null, 2))
+  }
+}
+
+function formatFilesAsJSON(files: WorkspaceSpec[]) {
+  return files.map((file) => {
+    const result: any = {
+      file: file.moduleId,
+    }
+
+    if (file.project.name) {
+      result.projectName = file.project.name
+    }
+    return result
+  })
+}
+
+function formatFilesAsString(files: WorkspaceSpec[]) {
+  return files.map((file) => {
+    let name = file.moduleId.substring(String(file[0].runner.root).length + 1)
+    if (file.project.name) {
+      name = `[${file.project.name}] ${name}`
+    }
+    return name
+  })
+}
+
 function processJsonOutput(files: File[], options: CliOptions) {
   if (typeof options.json === 'boolean') {
     return console.log(JSON.stringify(formatCollectedAsJSON(files), null, 2))

packages/vitest/src/node/cli/cli-config.ts

@@ -795,6 +795,7 @@ export const cliOptionsConfig: VitestCLIOptions = {
   outputJson: null,
   json: null,
   provide: null,
+  filesOnly: null,
 }
 
 export const benchCliOptionsConfig: Pick<
@@ -813,10 +814,13 @@ export const benchCliOptionsConfig: Pick<
 
 export const collectCliOptionsConfig: Pick<
   VitestCLIOptions,
-  'json'
+  'json' | 'filesOnly'
 > = {
   json: {
     description: 'Print collected tests as JSON or write to a file (Default: false)',
     argument: '[true/path]',
   },
+  filesOnly: {
+    description: 'Print only test files with out the test cases',
+  },
 }

packages/vitest/src/node/core.ts

@@ -374,6 +374,14 @@ export class Vitest {
     }
   }
 
+  async listFiles(filters?: string[]) {
+    const files = await this.filterTestsBySource(
+      await this.globTestFiles(filters),
+    )
+
+    return files
+  }
+
   async start(filters?: string[]) {
     this._onClose = []
 

test/cli/test/list.test.ts

@@ -58,6 +58,22 @@ test('correctly outputs json', async () => {
   expect(exitCode).toBe(0)
 })
 
+test('correctly outputs files only json', async () => {
+  const { stdout, exitCode } = await runVitestCli('list', '-r=./fixtures/list', '--json', '--filesOnly')
+  expect(relative(stdout)).toMatchInlineSnapshot(`
+    "[
+      {
+        "file": "<root>/fixtures/list/basic.test.ts"
+      },
+      {
+        "file": "<root>/fixtures/list/math.test.ts"
+      }
+    ]
+    "
+  `)
+  expect(exitCode).toBe(0)
+})
+
 test('correctly saves json', async () => {
   const { stdout, exitCode } = await runVitestCli('list', '-r=./fixtures/list', '--json=./list.json')
   onTestFinished(() => {
@@ -96,6 +112,26 @@ test('correctly saves json', async () => {
   expect(exitCode).toBe(0)
 })
 
+test('correctly saves files only json', async () => {
+  const { stdout, exitCode } = await runVitestCli('list', '-r=./fixtures/list', '--json=./list.json', '--filesOnly')
+  onTestFinished(() => {
+    rmSync('./fixtures/list/list.json')
+  })
+  const json = readFileSync('./fixtures/list/list.json', 'utf-8')
+  expect(stdout).toBe('')
+  expect(relative(json)).toMatchInlineSnapshot(`
+    "[
+      {
+        "file": "<root>/fixtures/list/basic.test.ts"
+      },
+      {
+        "file": "<root>/fixtures/list/math.test.ts"
+      }
+    ]"
+  `)
+  expect(exitCode).toBe(0)
+})
+
 test('correctly filters by file', async () => {
   const { stdout, exitCode } = await runVitestCli('list', 'math.test.ts', '-r=./fixtures/list')
   expect(stdout).toMatchInlineSnapshot(`
@@ -106,6 +142,15 @@ test('correctly filters by file', async () => {
   expect(exitCode).toBe(0)
 })
 
+test('correctly filters by file when using --filesOnly', async () => {
+  const { stdout, exitCode } = await runVitestCli('list', 'math.test.ts', '-r=./fixtures/list', '--filesOnly')
+  expect(stdout).toMatchInlineSnapshot(`
+    "math.test.ts
+    "
+  `)
+  expect(exitCode).toBe(0)
+})
+
 test('correctly prints project name in basic report', async () => {
   const { stdout } = await runVitestCli('list', 'math.test.ts', '-r=./fixtures/list', '--config=./custom.config.ts')
   expect(stdout).toMatchInlineSnapshot(`
@@ -115,6 +160,14 @@ test('correctly prints project name in basic report', async () => {
   `)
 })
 
+test('correctly prints project name in basic report when using --filesOnly', async () => {
+  const { stdout } = await runVitestCli('list', 'math.test.ts', '-r=./fixtures/list', '--config=./custom.config.ts', '--filesOnly')
+  expect(stdout).toMatchInlineSnapshot(`
+    "[custom] math.test.ts
+    "
+  `)
+})
+
 test('correctly prints project name and locations in json report', async () => {
   const { stdout } = await runVitestCli('list', 'math.test.ts', '-r=./fixtures/list', '--json', '--config=./custom.config.ts')
   expect(relative(stdout)).toMatchInlineSnapshot(`
@@ -142,6 +195,19 @@ test('correctly prints project name and locations in json report', async () => {
   `)
 })
 
+test('correctly prints project name in json report when using --filesOnly', async () => {
+  const { stdout } = await runVitestCli('list', 'math.test.ts', '-r=./fixtures/list', '--json', '--config=./custom.config.ts', '--filesOnly')
+  expect(relative(stdout)).toMatchInlineSnapshot(`
+    "[
+      {
+        "file": "<root>/fixtures/list/math.test.ts",
+        "projectName": "custom"
+      }
+    ]
+    "
+  `)
+})
+
 test('correctly filters by test name', async () => {
   const { stdout } = await runVitestCli('list', '-t=inner', '-r=./fixtures/list')
   expect(stdout).toMatchInlineSnapshot(`