feat: add snapshotDir to set base snapshot directory (#9260)

docs/src/test-advanced-js.md

@@ -15,6 +15,7 @@ These options define your test suite:
 - `metadata: any` - Any JSON-serializable metadata that will be put directly to the test report.
 - `name: string` - Project name, useful when defining multiple [test projects](#projects).
 - `outputDir: string` - Output directory for files created during the test run.
+- `snapshotDir: string` - Base output directory for snapshot files.
 - `repeatEach: number` - The number of times to repeat each test, useful for debugging flaky tests.
 - `retries: number` - The maximum number of retry attempts given to failed tests. If not specified, failing tests are not retried.
 - `testDir: string` - Directory that will be recursively scanned for test files.

docs/src/test-api/class-testconfig.md

@@ -286,6 +286,15 @@ test('example test', async ({}, testInfo) => {
 });
 ```
 
+## property: TestConfig.snapshotDir
+- type: <[string]>
+
+The base directory, relative to the config file, for snapshot files created with `toMatchSnapshot`. Defaults to [`property: TestConfig.testDir`].
+
+The directory for each test can be accessed by [`property: TestInfo.snapshotDir`] and [`method: TestInfo.snapshotPath`].
+
+This path will serve as the base directory for each test file snapshot directory. Setting `snapshotDir` to `'snapshots'`, the [`property: TestInfo.snapshotDir`] would resolve to `snapshots/a.spec.js-snapshots`.
+
 ## property: TestConfig.preserveOutput
 - type: <[PreserveOutput]<"always"|"never"|"failures-only">>
 

docs/src/test-api/class-testinfo.md

@@ -163,6 +163,11 @@ Test function as passed to `test(title, testFunction)`.
 
 Line number where the currently running test is declared.
 
+## property: TestInfo.snapshotDir
+- type: <[string]>
+
+Absolute path to the snapshot output directory for this specific test. Each test suite gets its own directory so they cannot conflict.
+
 ## property: TestInfo.outputDir
 - type: <[string]>
 

docs/src/test-api/class-testproject.md

@@ -124,6 +124,15 @@ Any JSON-serializable metadata that will be put directly to the test report.
 
 Project name is visible in the report and during test execution.
 
+## property: TestProject.snapshotDir
+- type: <[string]>
+
+The base directory, relative to the config file, for snapshot files created with `toMatchSnapshot`. Defaults to [`property: TestProject.testDir`].
+
+The directory for each test can be accessed by [`property: TestInfo.snapshotDir`] and [`method: TestInfo.snapshotPath`].
+
+This path will serve as the base directory for each test file snapshot directory. Setting `snapshotDir` to `'snapshots'`, the [`property: TestInfo.snapshotDir`] would resolve to `snapshots/a.spec.js-snapshots`.
+
 ## property: TestProject.outputDir
 - type: <[string]>
 

packages/playwright-test/src/loader.ts

@@ -169,6 +169,9 @@ export class Loader {
     let outputDir = takeFirst(this._configOverrides.outputDir, projectConfig.outputDir, this._config.outputDir, path.resolve(process.cwd(), 'test-results'));
     if (!path.isAbsolute(outputDir))
       outputDir = path.resolve(configDir, outputDir);
+    let snapshotDir = takeFirst(this._configOverrides.snapshotDir, projectConfig.snapshotDir, this._config.snapshotDir, testDir);
+    if (!path.isAbsolute(snapshotDir))
+      snapshotDir = path.resolve(configDir, snapshotDir);
     const fullProject: FullProject = {
       define: takeFirst(this._configOverrides.define, projectConfig.define, this._config.define, []),
       expect: takeFirst(this._configOverrides.expect, projectConfig.expect, this._config.expect, undefined),
@@ -178,6 +181,7 @@ export class Loader {
       metadata: takeFirst(this._configOverrides.metadata, projectConfig.metadata, this._config.metadata, undefined),
       name: takeFirst(this._configOverrides.name, projectConfig.name, this._config.name, ''),
       testDir,
+      snapshotDir,
       testIgnore: takeFirst(this._configOverrides.testIgnore, projectConfig.testIgnore, this._config.testIgnore, []),
       testMatch: takeFirst(this._configOverrides.testMatch, projectConfig.testMatch, this._config.testMatch, '**/?(*.)@(spec|test).@(ts|js|mjs)'),
       timeout: takeFirst(this._configOverrides.timeout, projectConfig.timeout, this._config.timeout, 10000),

packages/playwright-test/src/workerRunner.ts

@@ -241,6 +241,11 @@ export class WorkerRunner extends EventEmitter {
       return path.join(this._project.config.outputDir, testOutputDir);
     })();
 
+    const snapshotDir = (() => {
+      const relativeTestFilePath = path.relative(this._project.config.testDir, test._requireFile);
+      return path.join(this._project.config.snapshotDir, relativeTestFilePath + '-snapshots');
+    })();
+
     let testFinishedCallback = () => {};
     let lastStepId = 0;
     const testInfo: TestInfoImpl = {
@@ -266,13 +271,13 @@ export class WorkerRunner extends EventEmitter {
       timeout: this._project.config.timeout,
       snapshotSuffix: '',
       outputDir: baseOutputDir,
+      snapshotDir,
       outputPath: (...pathSegments: string[]): string => {
         fs.mkdirSync(baseOutputDir, { recursive: true });
         const joinedPath = path.join(...pathSegments);
         const outputPath = getContainedPath(baseOutputDir, joinedPath);
         if (outputPath) return outputPath;
         throw new Error(`The outputPath is not allowed outside of the parent directory. Please fix the defined path.\n\n\toutputPath: ${joinedPath}`);
-
       },
       snapshotPath: (...pathSegments: string[]): string => {
         let suffix = '';
@@ -280,11 +285,8 @@ export class WorkerRunner extends EventEmitter {
           suffix += '-' + this._projectNamePathSegment;
         if (testInfo.snapshotSuffix)
           suffix += '-' + testInfo.snapshotSuffix;
-
-        const baseSnapshotPath = test._requireFile + '-snapshots';
         const subPath = addSuffixToFilePath(path.join(...pathSegments), suffix);
-        const snapshotPath =  getContainedPath(baseSnapshotPath, subPath);
-
+        const snapshotPath =  getContainedPath(snapshotDir, subPath);
         if (snapshotPath) return snapshotPath;
         throw new Error(`The snapshotPath is not allowed outside of the parent directory. Please fix the defined path.\n\n\tsnapshotPath: ${subPath}`);
       },

packages/playwright-test/types/test.d.ts

@@ -123,6 +123,19 @@ interface TestProject {
    * Project name is visible in the report and during test execution.
    */
   name?: string;
+  /**
+   * The base directory, relative to the config file, for snapshot files created with `toMatchSnapshot`. Defaults to
+   * [testProject.testDir](https://playwright.dev/docs/api/class-testproject#test-project-test-dir).
+   *
+   * The directory for each test can be accessed by
+   * [testInfo.snapshotDir](https://playwright.dev/docs/api/class-testinfo#test-info-snapshot-dir) and
+   * [testInfo.snapshotPath(pathSegments)](https://playwright.dev/docs/api/class-testinfo#test-info-snapshot-path).
+   *
+   * This path will serve as the base directory for each test file snapshot directory. Setting `snapshotDir` to
+   * `'snapshots'`, the [testInfo.snapshotDir](https://playwright.dev/docs/api/class-testinfo#test-info-snapshot-dir) would
+   * resolve to `snapshots/a.spec.js-snapshots`.
+   */
+  snapshotDir?: string;
   /**
    * The output directory for files created during test execution. Defaults to `test-results`.
    *
@@ -603,6 +616,19 @@ interface TestConfig {
    */
   metadata?: any;
   name?: string;
+  /**
+   * The base directory, relative to the config file, for snapshot files created with `toMatchSnapshot`. Defaults to
+   * [testConfig.testDir](https://playwright.dev/docs/api/class-testconfig#test-config-test-dir).
+   *
+   * The directory for each test can be accessed by
+   * [testInfo.snapshotDir](https://playwright.dev/docs/api/class-testinfo#test-info-snapshot-dir) and
+   * [testInfo.snapshotPath(pathSegments)](https://playwright.dev/docs/api/class-testinfo#test-info-snapshot-path).
+   *
+   * This path will serve as the base directory for each test file snapshot directory. Setting `snapshotDir` to
+   * `'snapshots'`, the [testInfo.snapshotDir](https://playwright.dev/docs/api/class-testinfo#test-info-snapshot-dir) would
+   * resolve to `snapshots/a.spec.js-snapshots`.
+   */
+  snapshotDir?: string;
   /**
    * The output directory for files created during test execution. Defaults to `test-results`.
    *
@@ -1342,6 +1368,11 @@ export interface TestInfo {
    * [snapshots](https://playwright.dev/docs/test-snapshots).
    */
   snapshotSuffix: string;
+  /**
+   * Absolute path to the snapshot output directory for this specific test. Each test suite gets its own directory so they
+   * cannot conflict.
+   */
+  snapshotDir: string;
   /**
    * Absolute path to the output directory for this specific test run. Each test run gets its own directory so they cannot
    * conflict.

tests/playwright-test/golden.spec.ts

@@ -493,7 +493,96 @@ test('should join array of snapshot path segments without sanitizing ', async ({
     ...files,
     'a.spec.js-snapshots/test/path/snapshot.txt': `Hello world`,
     'a.spec.js': `
-      const { test } = require('./helper');;
+      const { test } = require('./helper');
+      test('is a test', ({}) => {
+        expect('Hello world').toMatchSnapshot(['test', 'path', 'snapshot.txt']);
+      });
+    `
+  });
+  expect(result.exitCode).toBe(0);
+});
+
+test('should use snapshotDir as snapshot base directory', async ({ runInlineTest }) => {
+  const result = await runInlineTest({
+    ...files,
+    'playwright.config.ts': `
+      module.exports = {
+        snapshotDir: 'snaps',
+      };
+    `,
+    'snaps/a.spec.js-snapshots/snapshot.txt': `Hello world`,
+    'a.spec.js': `
+      const { test } = require('./helper');
+      test('is a test', ({}) => {
+        expect('Hello world').toMatchSnapshot('snapshot.txt');
+      });
+    `
+  });
+  expect(result.exitCode).toBe(0);
+});
+
+test('should use snapshotDir with path segments as snapshot directory', async ({ runInlineTest }) => {
+  const result = await runInlineTest({
+    ...files,
+    'playwright.config.ts': `
+      module.exports = {
+        snapshotDir: 'snaps',
+      };
+    `,
+    'snaps/tests/a.spec.js-snapshots/test/path/snapshot.txt': `Hello world`,
+    'tests/a.spec.js': `
+      const { test } = require('../helper');
+      test('is a test', ({}) => {
+        expect('Hello world').toMatchSnapshot(['test', 'path', 'snapshot.txt']);
+      });
+    `
+  });
+  expect(result.exitCode).toBe(0);
+});
+
+test('should use snapshotDir with nested test suite and path segments', async ({ runInlineTest }) => {
+  const result = await runInlineTest({
+    ...files,
+    'playwright.config.ts': `
+      module.exports = {
+        snapshotDir: 'snaps',
+      };
+    `,
+    'snaps/path/to/tests/a.spec.js-snapshots/path/to/snapshot.txt': `Hello world`,
+    'path/to/tests/a.spec.js': `
+      const { test } = require('../../../helper');
+      test('is a test', ({}) => {
+        expect('Hello world').toMatchSnapshot(['path', 'to', 'snapshot.txt']);
+      });
+    `
+  });
+  expect(result.exitCode).toBe(0);
+});
+
+test('should use project snapshotDir over base snapshotDir', async ({ runInlineTest }) => {
+  const result = await runInlineTest({
+    'helper.ts': `
+      export const test = pwt.test.extend({
+        auto: [ async ({}, run, testInfo) => {
+          testInfo.snapshotSuffix = 'suffix';
+          await run();
+        }, { auto: true } ]
+      });
+    `,
+    'playwright.config.ts': `
+      module.exports = {
+        projects: [
+          {
+            name: 'foo',
+            snapshotDir: 'project_snaps',
+           },
+        ],
+        snapshotDir: 'snaps',
+      };
+    `,
+    'project_snaps/a.spec.js-snapshots/test/path/snapshot-foo-suffix.txt': `Hello world`,
+    'a.spec.js': `
+      const { test } = require('./helper');
       test('is a test', ({}) => {
         expect('Hello world').toMatchSnapshot(['test', 'path', 'snapshot.txt']);
       });

utils/generate_types/overrides-test.d.ts

@@ -51,6 +51,7 @@ interface TestProject {
   expect?: ExpectSettings;
   metadata?: any;
   name?: string;
+  snapshotDir?: string;
   outputDir?: string;
   repeatEach?: number;
   retries?: number;
@@ -120,6 +121,7 @@ interface TestConfig {
   expect?: ExpectSettings;
   metadata?: any;
   name?: string;
+  snapshotDir?: string;
   outputDir?: string;
   repeatEach?: number;
   retries?: number;
@@ -213,6 +215,7 @@ export interface TestInfo {
   stdout: (string | Buffer)[];
   stderr: (string | Buffer)[];
   snapshotSuffix: string;
+  snapshotDir: string;
   outputDir: string;
   snapshotPath: (...pathSegments: string[]) => string;
   outputPath: (...pathSegments: string[]) => string;