Playwright 配置测试的运行方式

Playwright 有许多选项来配置测试的运行方式。你可以在配置文件中指定这些选项。请注意，测试运行器选项是顶层的，不要将它们放入 use 部分。
基本配置
以下是一些最常见的配置选项。

import { defineConfig, devices } from '@playwright/test';

export default defineConfig({
// Look for test files in the "tests" directory, relative to this configuration file.
testDir: 'tests',

// Run all tests in parallel.
fullyParallel: true,

// Fail the build on CI if you accidentally left test.only in the source code.
forbidOnly: !!process.env.CI,

// Retry on CI only.
retries: process.env.CI ? 2 : 0,

// Opt out of parallel tests on CI.
workers: process.env.CI ? 1 : undefined,

// Reporter to use
reporter: 'html',

use: {
// Base URL to use in actions like await page.goto('/').
baseURL: 'http://127.0.0.1:3000',

// Collect trace when retrying the failed test.
trace: 'on-first-retry',

},
// Configure projects for major browsers.
projects: [
{
name: 'chromium',
use: { ...devices['Desktop Chrome'] },
},
],
// Run your local dev server before starting the tests.
webServer: {
command: 'npm run start',
url: 'http://127.0.0.1:3000',
reuseExistingServer: !process.env.CI,
},
});
过滤测试
按通配符模式或正则表达式过滤测试。

playwright.config.ts
import { defineConfig } from '@playwright/test';

export default defineConfig({
// Glob patterns or regular expressions to ignore test files.
testIgnore: '*test-assets',

// Glob patterns or regular expressions that match test files.
testMatch: 'todo-tests/.spec.ts',
});
高级配置
playwright.config.ts
import { defineConfig } from '@playwright/test';

export default defineConfig({
// Folder for test artifacts such as screenshots, videos, traces, etc.
outputDir: 'test-results',

// path to the global setup files.
globalSetup: require.resolve('./global-setup'),

// path to the global teardown files.
globalTeardown: require.resolve('./global-teardown'),

// Each test is given 30 seconds.
timeout: 30000,

});
期望选项
期望断言库的配置。

playwright.config.ts
import { defineConfig } from '@playwright/test';

export default defineConfig({
expect: {
// Maximum time expect() should wait for the condition to be met.
timeout: 5000,

toHaveScreenshot: {
  // An acceptable amount of pixels that could be different, unset by default.
  maxDiffPixels: 10,
},

toMatchSnapshot: {
  // An acceptable ratio of pixels that are different to the
  // total amount of pixels, between 0 and 1.
  maxDiffPixelRatio: 0.1,
},

},

});