fix: add --changed flag support to vitest list command (fix #8270) (#8272)

haakonjackfloat · web-flow · commit e71a5d0ec114 · 2025-07-22T14:27:33.000+02:00
diff --git a/packages/vitest/src/node/cli/cli-config.ts b/packages/vitest/src/node/cli/cli-config.ts
@@ -886,15 +886,17 @@ export const benchCliOptionsConfig: Pick<
   },
 }
 
-export const collectCliOptionsConfig: Pick<
-  VitestCLIOptions,
-  'json' | 'filesOnly'
-> = {
+export const collectCliOptionsConfig: VitestCLIOptions = {
+  ...cliOptionsConfig,
   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',
   },
+  changed: {
+    description: 'Print only tests that are affected by the changed files (default: `false`)',
+    argument: '[since]',
+  },
 }
diff --git a/test/cli/test/list-changed.test.ts b/test/cli/test/list-changed.test.ts
@@ -0,0 +1,44 @@
+import { expect, test } from 'vitest'
+import { editFile, resolvePath, runVitestCli } from '../../test-utils'
+
+test('list command with --changed flag shows only changed tests', async () => {
+  const sourceFile = resolvePath(import.meta.url, '../fixtures/git-changed/related/src/sourceA.ts')
+
+  // First, run list without --changed to see all tests
+  const { stdout: allTests } = await runVitestCli('list', '-r=./fixtures/git-changed/related')
+  expect(allTests).toContain('related.test.ts')
+  expect(allTests).toContain('not-related.test.ts')
+
+  // Now modify the source file to trigger --changed behavior
+  editFile(sourceFile, content => `${content}\n// modified for test`)
+
+  // Run list with --changed flag
+  const { stdout: changedTests } = await runVitestCli('list', '-r=./fixtures/git-changed/related', '--changed')
+  expect(changedTests).toContain('related.test.ts')
+  expect(changedTests).not.toContain('not-related.test.ts')
+})
+
+test('list command with --changed flag and --filesOnly shows only changed test files', async () => {
+  const sourceFile = resolvePath(import.meta.url, '../fixtures/git-changed/related/src/sourceA.ts')
+  editFile(sourceFile, content => `${content}\n// modified for filesOnly test`)
+
+  const { stdout: changedFiles } = await runVitestCli('list', '-r=./fixtures/git-changed/related', '--changed', '--filesOnly')
+  expect(changedFiles).toContain('related.test.ts')
+  expect(changedFiles).not.toContain('not-related.test.ts')
+})
+
+test('list command with --changed flag and --json outputs changed tests in JSON format', async () => {
+  const sourceFile = resolvePath(import.meta.url, '../fixtures/git-changed/related/src/sourceA.ts')
+  editFile(sourceFile, content => `${content}\n// modified for json test`)
+
+  const { stdout: changedJson } = await runVitestCli('list', '-r=./fixtures/git-changed/related', '--changed', '--json')
+  const jsonOutput = JSON.parse(changedJson)
+  expect(Array.isArray(jsonOutput)).toBe(true)
+  const relatedTest = jsonOutput.find((test: any) => test.file?.includes('related.test.ts'))
+  expect(relatedTest).toBeDefined()
+})
+
+test('list command with --changed flag when no changes exist should show no tests', async () => {
+  const { stdout: noChangesOutput } = await runVitestCli('list', '-r=./fixtures/git-changed/related', '--changed')
+  expect(noChangesOutput.trim()).toBe('')
+})
