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TestConfig

Playwright Test provides many options to configure how your tests are collected and executed, for example timeout or testDir. These options are described in the TestConfig object in the configuration file. This type describes format of the configuration file, to access resolved configuration parameters at run time use FullConfig.

Playwright Test supports running multiple test projects at the same time. Project-specific options should be put to testConfig.projects, but top-level TestConfig can also define base options shared between all projects.

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

export default defineConfig({
timeout: 30000,
globalTimeout: 600000,
reporter: 'list',
testDir: './tests',
});

Properties

build

Added in: v1.35 testConfig.build

Playwright transpiler configuration.

Usage

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

export default defineConfig({
build: {
external: ['**/*bundle.js'],
},
});

Type

  • Object
    • external Array<string> (optional)

      Paths to exclude from the transpilation expressed as a list of glob patterns. Typically heavy JS bundles that your test uses are listed here.


expect

Added in: v1.10 testConfig.expect

Configuration for the expect assertion library. Learn more about various timeouts.

Usage

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

export default defineConfig({
expect: {
timeout: 10000,
toMatchSnapshot: {
maxDiffPixels: 10,
},
},
});

Type

  • Object
    • timeout number (optional)

      Default timeout for async expect matchers in milliseconds, defaults to 5000ms.

    • toHaveScreenshot Object (optional)

      • animations "allow" | "disabled" (optional)

        See animations in page.screenshot(). Defaults to "disabled".

      • caret "hide" | "initial" (optional)

        See caret in page.screenshot(). Defaults to "hide".

      • maxDiffPixels number (optional)

        An acceptable amount of pixels that could be different, unset by default.

      • maxDiffPixelRatio number (optional)

        An acceptable ratio of pixels that are different to the total amount of pixels, between 0 and 1 , unset by default.

      • scale "css" | "device" (optional)

        See scale in page.screenshot(). Defaults to "css".

      • stylePath string | Array<string> (optional)

        See style in page.screenshot().

      • threshold number (optional)

        An acceptable perceived color difference between the same pixel in compared images, ranging from 0 (strict) and 1 (lax). "pixelmatch" comparator computes color difference in YIQ color space and defaults threshold value to 0.2.

      Configuration for the expect(page).toHaveScreenshot() method.

    • toMatchSnapshot Object (optional)

      • maxDiffPixels number (optional)

        An acceptable amount of pixels that could be different, unset by default.

      • maxDiffPixelRatio number (optional)

        An acceptable ratio of pixels that are different to the total amount of pixels, between 0 and 1 , unset by default.

      • threshold number (optional)

        An acceptable perceived color difference between the same pixel in compared images, ranging from 0 (strict) and 1 (lax). "pixelmatch" comparator computes color difference in YIQ color space and defaults threshold value to 0.2.

      Configuration for the expect(value).toMatchSnapshot() method.

    • toPass Object (optional)

      • intervals Array<number> (optional)

        Probe intervals for toPass method in milliseconds.

      • timeout number (optional)

        Timeout for toPass method in milliseconds.

      Configuration for the expect(value).toPass() method.


forbidOnly

Added in: v1.10 testConfig.forbidOnly

Whether to exit with an error if any tests or groups are marked as test.only() or test.describe.only(). Useful on CI.

Usage

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

export default defineConfig({
forbidOnly: !!process.env.CI,
});

Type


fullyParallel

Added in: v1.20 testConfig.fullyParallel

Playwright Test runs tests in parallel. In order to achieve that, it runs several worker processes that run at the same time. By default, test files are run in parallel. Tests in a single file are run in order, in the same worker process.

You can configure entire test run to concurrently execute all tests in all files using this option.

Usage

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

export default defineConfig({
fullyParallel: true,
});

Type


globalSetup

Added in: v1.10 testConfig.globalSetup

Path to the global setup file. This file will be required and run before all the tests. It must export a single function that takes a FullConfig argument.

Learn more about global setup and teardown.

Usage

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

export default defineConfig({
globalSetup: './global-setup',
});

Type


globalTeardown

Added in: v1.10 testConfig.globalTeardown

Path to the global teardown file. This file will be required and run after all the tests. It must export a single function. See also testConfig.globalSetup.

Learn more about global setup and teardown.

Usage

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

export default defineConfig({
globalTeardown: './global-teardown',
});

Type


globalTimeout

Added in: v1.10 testConfig.globalTimeout

Maximum time in milliseconds the whole test suite can run. Zero timeout (default) disables this behavior. Useful on CI to prevent broken setup from running too long and wasting resources. Learn more about various timeouts.

Usage

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

export default defineConfig({
globalTimeout: process.env.CI ? 60 * 60 * 1000 : undefined,
});

Type


grep

Added in: v1.10 testConfig.grep

Filter to only run tests with a title matching one of the patterns. For example, passing grep: /cart/ should only run tests with "cart" in the title. Also available in the command line with the -g option. The regular expression will be tested against the string that consists of the test file name, test.describe name (if any) and the test name divided by spaces, e.g. my-test.spec.ts my-suite my-test.

grep option is also useful for tagging tests.

Usage

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

export default defineConfig({
grep: /smoke/,
});

Type


grepInvert

Added in: v1.10 testConfig.grepInvert

Filter to only run tests with a title not matching one of the patterns. This is the opposite of testConfig.grep. Also available in the command line with the --grep-invert option.

grepInvert option is also useful for tagging tests.

Usage

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

export default defineConfig({
grepInvert: /manual/,
});

Type


ignoreSnapshots

Added in: v1.26 testConfig.ignoreSnapshots

Whether to skip snapshot expectations, such as expect(value).toMatchSnapshot() and await expect(page).toHaveScreenshot().

Usage

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

export default defineConfig({
ignoreSnapshots: !process.env.CI,
});

Type


maxFailures

Added in: v1.10 testConfig.maxFailures

The maximum number of test failures for the whole test suite run. After reaching this number, testing will stop and exit with an error. Setting to zero (default) disables this behavior.

Also available in the command line with the --max-failures and -x options.

Usage

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

export default defineConfig({
maxFailures: process.env.CI ? 1 : 0,
});

Type


metadata

Added in: v1.10 testConfig.metadata

Metadata that will be put directly to the test report serialized as JSON.

Usage

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

export default defineConfig({
metadata: 'acceptance tests',
});

Type


name

Added in: v1.10 testConfig.name

Config name is visible in the report and during test execution, unless overridden by testProject.name.

Usage

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

export default defineConfig({
name: 'acceptance tests',
});

Type


outputDir

Added in: v1.10 testConfig.outputDir

The output directory for files created during test execution. Defaults to <package.json-directory>/test-results.

Usage

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

export default defineConfig({
outputDir: './test-results',
});

Type

Details

This directory is cleaned at the start. When running a test, a unique subdirectory inside the testConfig.outputDir is created, guaranteeing that test running in parallel do not conflict. This directory can be accessed by testInfo.outputDir and testInfo.outputPath().

Here is an example that uses testInfo.outputPath() to create a temporary file.

import { test, expect } from '@playwright/test';
import fs from 'fs';

test('example test', async ({}, testInfo) => {
const file = testInfo.outputPath('temporary-file.txt');
await fs.promises.writeFile(file, 'Put some data to the file', 'utf8');
});

preserveOutput

Added in: v1.10 testConfig.preserveOutput

Whether to preserve test output in the testConfig.outputDir. Defaults to 'always'.

  • 'always' - preserve output for all tests;
  • 'never' - do not preserve output for any tests;
  • 'failures-only' - only preserve output for failed tests.

Usage

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

export default defineConfig({
preserveOutput: 'always',
});

Type

  • "always" | "never" | "failures-only"

projects

Added in: v1.10 testConfig.projects

Playwright Test supports running multiple test projects at the same time. See TestProject for more information.

Usage

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

export default defineConfig({
projects: [
{ name: 'chromium', use: devices['Desktop Chrome'] }
]
});

Type


quiet

Added in: v1.10 testConfig.quiet

Whether to suppress stdio and stderr output from the tests.

Usage

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

export default defineConfig({
quiet: !!process.env.CI,
});

Type


repeatEach

Added in: v1.10 testConfig.repeatEach

The number of times to repeat each test, useful for debugging flaky tests.

Usage

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

export default defineConfig({
repeatEach: 3,
});

Type


reportSlowTests

Added in: v1.10 testConfig.reportSlowTests

Whether to report slow test files. Pass null to disable this feature.

Usage

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

export default defineConfig({
reportSlowTests: null,
});

Type

  • null | Object
    • max number

      The maximum number of slow test files to report. Defaults to 5.

    • threshold number

      Test duration in milliseconds that is considered slow. Defaults to 15 seconds.

Details

Test files that took more than threshold milliseconds are considered slow, and the slowest ones are reported, no more than max number of them. Passing zero as max reports all test files that exceed the threshold.


reporter

Added in: v1.10 testConfig.reporter

The list of reporters to use. Each reporter can be:

  • A builtin reporter name like 'list' or 'json'.
  • A module name like 'my-awesome-reporter'.
  • A relative path to the reporter like './reporters/my-awesome-reporter.js'.

You can pass options to the reporter in a tuple like ['json', { outputFile: './report.json' }].

Learn more in the reporters guide.

Usage

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

export default defineConfig({
reporter: 'line',
});

Type

  • string | Array<Object> | "list" | "dot" | "line" | "github" | "json" | "junit" | "null" | "html"
    • 0 string

      Reporter name or module or file path

    • 1 Object

      An object with reporter options if any


retries

Added in: v1.10 testConfig.retries

The maximum number of retry attempts given to failed tests. By default failing tests are not retried. Learn more about test retries.

Usage

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

export default defineConfig({
retries: 2,
});

Type


shard

Added in: v1.10 testConfig.shard

Shard tests and execute only the selected shard. Specify in the one-based form like { total: 5, current: 2 }.

Learn more about parallelism and sharding with Playwright Test.

Usage

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

export default defineConfig({
shard: { total: 10, current: 3 },
});

Type

  • null | Object
    • current number

      The index of the shard to execute, one-based.

    • total number

      The total number of shards.


snapshotPathTemplate

Added in: v1.28 testConfig.snapshotPathTemplate

This option configures a template controlling location of snapshots generated by expect(page).toHaveScreenshot() and expect(value).toMatchSnapshot().

Usage

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

export default defineConfig({
testDir: './tests',
snapshotPathTemplate: '{testDir}/__screenshots__/{testFilePath}/{arg}{ext}',
});

Type

Details

The value might include some "tokens" that will be replaced with actual values during test execution.

Consider the following file structure:

playwright.config.ts
tests/
└── page/
└── page-click.spec.ts

And the following page-click.spec.ts that uses toHaveScreenshot() call:

page-click.spec.ts
import { test, expect } from '@playwright/test';

test.describe('suite', () => {
test('test should work', async ({ page }) => {
await expect(page).toHaveScreenshot(['foo', 'bar', 'baz.png']);
});
});

The list of supported tokens:

  • {arg} - Relative snapshot path without extension. These come from the arguments passed to the toHaveScreenshot() and toMatchSnapshot() calls; if called without arguments, this will be an auto-generated snapshot name.
    • Value: foo/bar/baz
  • {ext} - snapshot extension (with dots)
    • Value: .png
  • {platform} - The value of process.platform.
  • {projectName} - Project's file-system-sanitized name, if any.
    • Value: '' (empty string).
  • {snapshotDir} - Project's testConfig.snapshotDir.
    • Value: /home/playwright/tests (since snapshotDir is not provided in config, it defaults to testDir)
  • {testDir} - Project's testConfig.testDir.
    • Value: /home/playwright/tests (absolute path is since testDir is resolved relative to directory with config)
  • {testFileDir} - Directories in relative path from testDir to test file.
    • Value: page
  • {testFileName} - Test file name with extension.
    • Value: page-click.spec.ts
  • {testFilePath} - Relative path from testDir to test file
    • Value: page/page-click.spec.ts
  • {testName} - File-system-sanitized test title, including parent describes but excluding file name.
    • Value: suite-test-should-work

Each token can be preceded with a single character that will be used only if this token has non-empty value.

Consider the following config:

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

export default defineConfig({
snapshotPathTemplate: '__screenshots__{/projectName}/{testFilePath}/{arg}{ext}',
testMatch: 'example.spec.ts',
projects: [
{ use: { browserName: 'firefox' } },
{ name: 'chromium', use: { browserName: 'chromium' } },
],
});

In this config:

  1. First project does not have a name, so its snapshots will be stored in <configDir>/__screenshots__/example.spec.ts/....
  2. Second project does have a name, so its snapshots will be stored in <configDir>/__screenshots__/chromium/example.spec.ts/...
  3. Since snapshotPathTemplate resolves to relative path, it will be resolved relative to configDir.
  4. Forward slashes "/" can be used as path separators on any platform.

testDir

Added in: v1.10 testConfig.testDir

Directory that will be recursively scanned for test files. Defaults to the directory of the configuration file.

Usage

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

export default defineConfig({
testDir: './tests/playwright',
});

Type


testIgnore

Added in: v1.10 testConfig.testIgnore

Files matching one of these patterns are not executed as test files. Matching is performed against the absolute file path. Strings are treated as glob patterns.

For example, '**/test-assets/**' will ignore any files in the test-assets directory.

Usage

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

export default defineConfig({
testIgnore: '**/test-assets/**',
});

Type


testMatch

Added in: v1.10 testConfig.testMatch

Only the files matching one of these patterns are executed as test files. Matching is performed against the absolute file path. Strings are treated as glob patterns.

By default, Playwright looks for files matching the following glob pattern: **/*.@(spec|test).?(c|m)[jt]s?(x). This means JavaScript or TypeScript files with ".test" or ".spec" suffix, for example login-screen.wrong-credentials.spec.ts.

Usage

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

export default defineConfig({
testMatch: /.*\.e2e\.js/,
});

Type


timeout

Added in: v1.10 testConfig.timeout

Timeout for each test in milliseconds. Defaults to 30 seconds.

This is a base timeout for all tests. In addition, each test can configure its own timeout with test.setTimeout(). Learn more about various timeouts.

Usage

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

export default defineConfig({
timeout: 5 * 60 * 1000,
});

Type


updateSnapshots

Added in: v1.10 testConfig.updateSnapshots

Whether to update expected snapshots with the actual results produced by the test run. Defaults to 'missing'.

  • 'all' - All tests that are executed will update snapshots that did not match. Matching snapshots will not be updated.
  • 'none' - No snapshots are updated.
  • 'missing' - Missing snapshots are created, for example when authoring a new test and running it for the first time. This is the default.

Learn more about snapshots.

Usage

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

export default defineConfig({
updateSnapshots: 'missing',
});

Type

  • "all" | "none" | "missing"

use

Added in: v1.10 testConfig.use

Global options for all tests, for example testOptions.browserName. Learn more about configuration and see available options.

Usage

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

export default defineConfig({
use: {
browserName: 'chromium',
},
});

Type


webServer

Added in: v1.10 testConfig.webServer

Launch a development web server (or multiple) during the tests.

Usage

playwright.config.ts
import { defineConfig } from '@playwright/test';
export default defineConfig({
webServer: {
command: 'npm run start',
url: 'http://127.0.0.1:3000',
timeout: 120 * 1000,
reuseExistingServer: !process.env.CI,
},
use: {
baseURL: 'http://localhost:3000/',
},
});

Now you can use a relative path when navigating the page:

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

test('test', async ({ page }) => {
// This will result in http://localhost:3000/foo
await page.goto('/foo');
});

Multiple web servers (or background processes) can be launched:

playwright.config.ts
import { defineConfig } from '@playwright/test';
export default defineConfig({
webServer: [
{
command: 'npm run start',
url: 'http://127.0.0.1:3000',
timeout: 120 * 1000,
reuseExistingServer: !process.env.CI,
},
{
command: 'npm run backend',
url: 'http://127.0.0.1:3333',
timeout: 120 * 1000,
reuseExistingServer: !process.env.CI,
}
],
use: {
baseURL: 'http://127.0.0.1:3000',
},
});

Type

  • Object | Array<Object>
    • command string

      Shell command to start. For example npm run start..

    • cwd string (optional)

      Current working directory of the spawned process, defaults to the directory of the configuration file.

    • env Object<string, string> (optional)

      Environment variables to set for the command, process.env by default.

    • ignoreHTTPSErrors boolean (optional)

      Whether to ignore HTTPS errors when fetching the url. Defaults to false.

    • port number (optional)

      The port that your http server is expected to appear on. It does wait until it accepts connections. Either port or url should be specified.

    • reuseExistingServer boolean (optional)

      If true, it will re-use an existing server on the port or url when available. If no server is running on that port or url, it will run the command to start a new server. If false, it will throw if an existing process is listening on the port or url. This should be commonly set to !process.env.CI to allow the local dev server when running tests locally.

    • stdout "pipe" | "ignore" (optional)

      If "pipe", it will pipe the stdout of the command to the process stdout. If "ignore", it will ignore the stdout of the command. Default to "ignore".

    • stderr "pipe" | "ignore" (optional)

      Whether to pipe the stderr of the command to the process stderr or ignore it. Defaults to "pipe".

    • timeout number (optional)

      How long to wait for the process to start up and be available in milliseconds. Defaults to 60000.

    • url string (optional)

      The url on your http server that is expected to return a 2xx, 3xx, 400, 401, 402, or 403 status code when the server is ready to accept connections. Redirects (3xx status codes) are being followed and the new location is checked. Either port or url should be specified.

Details

If the port is specified, Playwright Test will wait for it to be available on 127.0.0.1 or ::1, before running the tests. If the url is specified, Playwright Test will wait for the URL to return a 2xx, 3xx, 400, 401, 402, or 403 status code before running the tests.

For continuous integration, you may want to use the reuseExistingServer: !process.env.CI option which does not use an existing server on the CI. To see the stdout, you can set the DEBUG=pw:webserver environment variable.

The port (but not the url) gets passed over to Playwright as a testOptions.baseURL. For example port 8080 produces baseURL equal http://localhost:8080. If webServer is specified as an array, you must explicitly configure the baseURL (even if it only has one entry).

note

It is also recommended to specify testOptions.baseURL in the config, so that tests could use relative urls.


workers

Added in: v1.10 testConfig.workers

The maximum number of concurrent worker processes to use for parallelizing tests. Can also be set as percentage of logical CPU cores, e.g. '50%'.

Playwright Test uses worker processes to run tests. There is always at least one worker process, but more can be used to speed up test execution.

Defaults to half of the number of logical CPU cores. Learn more about parallelism and sharding with Playwright Test.

Usage

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

export default defineConfig({
workers: 3,
});

Type


Deprecated

snapshotDir

Added in: v1.10 testConfig.snapshotDir
Discouraged

Use testConfig.snapshotPathTemplate to configure snapshot paths.

The base directory, relative to the config file, for snapshot files created with toMatchSnapshot. Defaults to testConfig.testDir.

Usage

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

export default defineConfig({
snapshotDir: './snapshots',
});

Type

Details

The directory for each test can be accessed by testInfo.snapshotDir and testInfo.snapshotPath().

This path will serve as the base directory for each test file snapshot directory. Setting snapshotDir to 'snapshots', the testInfo.snapshotDir would resolve to snapshots/a.spec.js-snapshots.