docs: explain that beforeAll/afterAll run again in the new worker process (#10446)

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

@@ -61,7 +61,9 @@ Test function that takes one or two arguments: an object with fixtures and optio
 
 ## method: Test.afterAll
 
-Declares an `afterAll` hook that is executed once after all tests. When called in the scope of a test file, runs after all tests in the file. When called inside a [`method: Test.describe`] group, runs after all tests in the group.
+Declares an `afterAll` hook that is executed once per worker after all tests. When called in the scope of a test file, runs after all tests in the file. When called inside a [`method: Test.describe`] group, runs after all tests in the group.
+
+Note that worker process is restarted on test failures, and `afterAll` hook runs again in the new worker. Learn more about [workers and failures](./test-retries.md).
 
 ### param: Test.afterAll.hookFunction
 - `hookFunction` <[function]\([Fixtures], [TestInfo]\)>
@@ -116,7 +118,7 @@ Hook function that takes one or two arguments: an object with fixtures and optio
 
 ## method: Test.beforeAll
 
-Declares a `beforeAll` hook that is executed once before all tests. When called in the scope of a test file, runs before all tests in the file. When called inside a [`method: Test.describe`] group, runs before all tests in the group.
+Declares a `beforeAll` hook that is executed once per worker process before all tests. When called in the scope of a test file, runs before all tests in the file. When called inside a [`method: Test.describe`] group, runs before all tests in the group.
 
 ```js js-flavor=js
 // example.spec.js
@@ -152,6 +154,8 @@ test('my test', async ({ page }) => {
 });
 ```
 
+Note that worker process is restarted on test failures, and `beforeAll` hook runs again in the new worker. Learn more about [workers and failures](./test-retries.md).
+
 You can use [`method: Test.afterAll`] to teardown any resources set up in `beforeAll`.
 
 ### param: Test.beforeAll.hookFunction

docs/src/test-retries-js.md

@@ -15,6 +15,7 @@ Consider the following snippet:
 const { test } = require('@playwright/test');
 
 test.describe('suite', () => {
+  test.beforeAll(async () => { /* ... */ });
   test('first good', async ({ page }) => { /* ... */ });
   test('second flaky', async ({ page }) => { /* ... */ });
   test('third good', async ({ page }) => { /* ... */ });
@@ -25,6 +26,7 @@ test.describe('suite', () => {
 import { test } from '@playwright/test';
 
 test.describe('suite', () => {
+  test.beforeAll(async () => { /* ... */ });
   test('first good', async ({ page }) => { /* ... */ });
   test('second flaky', async ({ page }) => { /* ... */ });
   test('third good', async ({ page }) => { /* ... */ });
@@ -33,22 +35,27 @@ test.describe('suite', () => {
 
 When **all tests pass**, they will run in order in the same worker process.
 * Worker process starts
+  * `beforeAll` hook runs
   * `first good` passes
   * `second flaky` passes
   * `third good` passes
 
 Should **any test fail**, Playwright Test will discard the entire worker process along with the browser and will start a new one. Testing will continue in the new worker process starting with the next test.
 * Worker process #1 starts
+  * `beforeAll` hook runs
   * `first good` passes
   * `second flaky` fails
 * Worker process #2 starts
+  * `beforeAll` hook runs again
   * `third good` passes
 
 If you **enable [retries](#retries)**, second worker process will start by retrying the failed test and continue from there.
 * Worker process #1 starts
+  * `beforeAll` hook runs
   * `first good` passes
   * `second flaky` fails
 * Worker process #2 starts
+  * `beforeAll` hook runs again
   * `second flaky` is retried and passes
   * `third good` passes
 
@@ -115,6 +122,7 @@ Consider the following snippet that uses `test.describe.serial`:
 const { test } = require('@playwright/test');
 
 test.describe.serial('suite', () => {
+  test.beforeAll(async () => { /* ... */ });
   test('first good', async ({ page }) => { /* ... */ });
   test('second flaky', async ({ page }) => { /* ... */ });
   test('third good', async ({ page }) => { /* ... */ });
@@ -125,6 +133,7 @@ test.describe.serial('suite', () => {
 import { test } from '@playwright/test';
 
 test.describe.serial('suite', () => {
+  test.beforeAll(async () => { /* ... */ });
   test('first good', async ({ page }) => { /* ... */ });
   test('second flaky', async ({ page }) => { /* ... */ });
   test('third good', async ({ page }) => { /* ... */ });
@@ -133,16 +142,19 @@ test.describe.serial('suite', () => {
 
 When running without [retries](#retries), all tests after the failure are skipped:
 * Worker process #1:
+  * `beforeAll` hook runs
   * `first good` passes
   * `second flaky` fails
   * `third good` is skipped entirely
 
 When running with [retries](#retries), all tests are retried together:
 * Worker process #1:
+  * `beforeAll` hook runs
   * `first good` passes
   * `second flaky` fails
   * `third good` is skipped
 * Worker process #2:
+  * `beforeAll` hook runs again
   * `first good` passes again
   * `second flaky` passes
   * `third good` passes

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

@@ -2282,8 +2282,8 @@ export interface TestType<TestArgs extends KeyValue, WorkerArgs extends KeyValue
    */
   afterEach(inner: (args: TestArgs & WorkerArgs, testInfo: TestInfo) => Promise<any> | any): void;
   /**
-   * Declares a `beforeAll` hook that is executed once before all tests. When called in the scope of a test file, runs before
-   * all tests in the file. When called inside a
+   * Declares a `beforeAll` hook that is executed once per worker process before all tests. When called in the scope of a
+   * test file, runs before all tests in the file. When called inside a
    * [test.describe(title, callback)](https://playwright.dev/docs/api/class-test#test-describe) group, runs before all tests
    * in the group.
    *
@@ -2304,16 +2304,22 @@ export interface TestType<TestArgs extends KeyValue, WorkerArgs extends KeyValue
    * });
    * ```
    *
+   * Note that worker process is restarted on test failures, and `beforeAll` hook runs again in the new worker. Learn more
+   * about [workers and failures](https://playwright.dev/docs/test-retries).
+   *
    * You can use [test.afterAll(hookFunction)](https://playwright.dev/docs/api/class-test#test-after-all) to teardown any
    * resources set up in `beforeAll`.
    * @param hookFunction Hook function that takes one or two arguments: an object with worker fixtures and optional [TestInfo].
    */
   beforeAll(inner: (args: TestArgs & WorkerArgs, testInfo: TestInfo) => Promise<any> | any): void;
   /**
-   * Declares an `afterAll` hook that is executed once after all tests. When called in the scope of a test file, runs after
-   * all tests in the file. When called inside a
+   * Declares an `afterAll` hook that is executed once per worker after all tests. When called in the scope of a test file,
+   * runs after all tests in the file. When called inside a
    * [test.describe(title, callback)](https://playwright.dev/docs/api/class-test#test-describe) group, runs after all tests
    * in the group.
+   *
+   * Note that worker process is restarted on test failures, and `afterAll` hook runs again in the new worker. Learn more
+   * about [workers and failures](https://playwright.dev/docs/test-retries).
    * @param hookFunction Hook function that takes one or two arguments: an object with worker fixtures and optional [TestInfo].
    */
   afterAll(inner: (args: TestArgs & WorkerArgs, testInfo: TestInfo) => Promise<any> | any): void;