playwright/tests/config/browserTest.ts

/**
 * Copyright (c) Microsoft Corporation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import type { Fixtures } from './test-runner';
import type { Browser, BrowserContext, BrowserContextOptions, BrowserType, LaunchOptions, Page } from '../../index';
import { removeFolders } from '../../lib/utils/utils';
import * as path from 'path';
import * as fs from 'fs';
import * as os from 'os';
import { RemoteServer, RemoteServerOptions } from './remoteServer';
import { baseTest, CommonWorkerFixtures } from './baseTest';

type PlaywrightWorkerOptions = {
  executablePath: LaunchOptions['executablePath'];
  proxy: LaunchOptions['proxy'];
  args: LaunchOptions['args'];
};
export type PlaywrightWorkerFixtures = {
  browserType: BrowserType;
  browserOptions: LaunchOptions;
  browser: Browser;
  browserVersion: string;
};
type PlaywrightTestOptions = {
  hasTouch: BrowserContextOptions['hasTouch'];
};
type PlaywrightTestFixtures = {
  createUserDataDir: () => Promise<string>;
  launchPersistent: (options?: Parameters<BrowserType['launchPersistentContext']>[1]) => Promise<{ context: BrowserContext, page: Page }>;
  startRemoteServer: (options?: RemoteServerOptions) => Promise<RemoteServer>;
  contextOptions: BrowserContextOptions;
  contextFactory: (options?: BrowserContextOptions) => Promise<BrowserContext>;
  context: BrowserContext;
  page: Page;
};
export type PlaywrightOptions = PlaywrightWorkerOptions & PlaywrightTestOptions;

export const playwrightFixtures: Fixtures<PlaywrightTestOptions & PlaywrightTestFixtures, PlaywrightWorkerOptions & PlaywrightWorkerFixtures, {}, CommonWorkerFixtures> = {
  executablePath: [ undefined, { scope: 'worker' } ],
  proxy: [ undefined, { scope: 'worker' } ],
  args: [ undefined, { scope: 'worker' } ],
  hasTouch: undefined,

  browserType: [async ({ playwright, browserName }, run) => {
    await run(playwright[browserName]);
  }, { scope: 'worker' } ],

  browserOptions: [async ({ headless, channel, executablePath, proxy, args }, run) => {
    await run({
      headless,
      channel,
      executablePath,
      proxy,
      args,
      handleSIGINT: false,
    });
  }, { scope: 'worker' } ],

  browser: [async ({ browserType, browserOptions }, run) => {
    const browser = await browserType.launch(browserOptions);
    await run(browser);
    await browser.close();
  }, { scope: 'worker' } ],

  browserVersion: [async ({ browser }, run) => {
    await run(browser.version());
  }, { scope: 'worker' } ],

  createUserDataDir: async ({}, run) => {
    const dirs: string[] = [];
    // We do not put user data dir in testOutputPath,
    // because we do not want to upload them as test result artifacts.
    //
    // Additionally, it is impossible to upload user data dir after test run:
    // - Firefox removes lock file later, presumably from another watchdog process?
    // - WebKit has circular symlinks that makes CI go crazy.
    await run(async () => {
      const dir = await fs.promises.mkdtemp(path.join(os.tmpdir(), 'playwright-test-'));
      dirs.push(dir);
      return dir;
    });
    await removeFolders(dirs);
  },

  launchPersistent: async ({ createUserDataDir, browserType, browserOptions }, run) => {
    let persistentContext: BrowserContext | undefined;
    await run(async options => {
      if (persistentContext)
        throw new Error('can only launch one persitent context');
      const userDataDir = await createUserDataDir();
      persistentContext = await browserType.launchPersistentContext(userDataDir, { ...browserOptions, ...options });
      const page = persistentContext.pages()[0];
      return { context: persistentContext, page };
    });
    if (persistentContext)
      await persistentContext.close();
  },

  startRemoteServer: async ({ browserType, browserOptions }, run) => {
    let remoteServer: RemoteServer | undefined;
    await run(async options => {
      if (remoteServer)
        throw new Error('can only start one remote server');
      remoteServer = new RemoteServer();
      await remoteServer._start(browserType, browserOptions, options);
      return remoteServer;
    });
    if (remoteServer)
      await remoteServer.close();
  },

  contextOptions: async ({ video, hasTouch }, run, testInfo) => {
    const debugName = path.relative(testInfo.project.outputDir, testInfo.outputDir).replace(/[\/\\]/g, '-');
    const contextOptions = {
      recordVideo: video ? { dir: testInfo.outputPath('') } : undefined,
      _debugName: debugName,
      hasTouch,
    } as BrowserContextOptions;
    await run(contextOptions);
  },

  contextFactory: async ({ browser, contextOptions, trace }, run, testInfo) => {
    const contexts: BrowserContext[] = [];
    await run(async options => {
      const context = await browser.newContext({ ...contextOptions, ...options });
      if (trace)
        await context.tracing.start({ screenshots: true, snapshots: true });
      (context as any)._csi = {
        onApiCall: (stackTrace: any) => {
          const testInfoImpl = testInfo as any;
          const existingStep = testInfoImpl._currentSteps().find(step => step.category === 'pw:api' || step.category === 'expect');
          const newStep = existingStep ? undefined : testInfoImpl._addStep('pw:api', stackTrace.apiName);
          return (error?: Error) => newStep?.complete(error);
        },
      };
      contexts.push(context);
      return context;
    });
    await Promise.all(contexts.map(async context => {
      const videos = context.pages().map(p => p.video()).filter(Boolean);
      if (!(context as any)._closed && trace)
        await context.tracing.stop({ path: testInfo.outputPath('trace.zip') });
      await context.close();
      for (const v of videos) {
        const videoPath = await v.path().catch(() => null);
        if (!videoPath)
          continue;
        const savedPath = testInfo.outputPath(path.basename(videoPath));
        await v.saveAs(savedPath);
        testInfo.attachments.push({ name: 'video', path: savedPath, contentType: 'video/webm' });
      }
    }));
  },

  context: async ({ contextFactory }, run) => {
    await run(await contextFactory());
  },

  page: async ({ context }, run) => {
    await run(await context.newPage());
  },
};

const test = baseTest.extend<PlaywrightTestOptions & PlaywrightTestFixtures, PlaywrightWorkerOptions & PlaywrightWorkerFixtures>(playwrightFixtures);
export const playwrightTest = test;
export const browserTest = test;
export const contextTest = test;

export { expect } from './test-runner';