170 строки
7.9 KiB
Markdown
170 строки
7.9 KiB
Markdown
# 🎭 Playwright
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[](https://www.npmjs.com/package/playwright) <!-- GEN:chromium-version-badge -->[](https://www.chromium.org/Home)<!-- GEN:stop --> <!-- GEN:firefox-version-badge -->[](https://www.mozilla.org/en-US/firefox/new/)<!-- GEN:stop --> <!-- GEN:webkit-version-badge -->[](https://webkit.org/)<!-- GEN:stop -->
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## [Documentation](https://playwright.dev) | [API reference](https://playwright.dev/docs/api/class-playwright)
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Playwright is a framework for Web Testing and Automation. It allows testing [Chromium](https://www.chromium.org/Home), [Firefox](https://www.mozilla.org/en-US/firefox/new/) and [WebKit](https://webkit.org/) with a single API. Playwright is built to enable cross-browser web automation that is **ever-green**, **capable**, **reliable** and **fast**.
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| | Linux | macOS | Windows |
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| :--- | :---: | :---: | :---: |
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| Chromium <!-- GEN:chromium-version -->121.0.6167.16<!-- GEN:stop --> | :white_check_mark: | :white_check_mark: | :white_check_mark: |
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| WebKit <!-- GEN:webkit-version -->17.4<!-- GEN:stop --> | :white_check_mark: | :white_check_mark: | :white_check_mark: |
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| Firefox <!-- GEN:firefox-version -->120.0.1<!-- GEN:stop --> | :white_check_mark: | :white_check_mark: | :white_check_mark: |
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Headless execution is supported for all browsers on all platforms. Check out [system requirements](https://playwright.dev/docs/intro#system-requirements) for details.
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Looking for Playwright for [Python](https://playwright.dev/python/docs/intro), [.NET](https://playwright.dev/dotnet/docs/intro), or [Java](https://playwright.dev/java/docs/intro)?
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## Installation
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Playwright has its own test runner for end-to-end tests, we call it Playwright Test.
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### Using init command
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The easiest way to get started with Playwright Test is to run the init command.
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```Shell
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# Run from your project's root directory
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npm init playwright@latest
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# Or create a new project
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npm init playwright@latest new-project
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```
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This will create a configuration file, optionally add examples, a GitHub Action workflow and a first test example.spec.ts. You can now jump directly to writing assertions section.
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### Manually
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Add dependency and install browsers.
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```Shell
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npm i -D @playwright/test
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# install supported browsers
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npx playwright install
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```
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You can optionally install only selected browsers, see [install browsers](https://playwright.dev/docs/cli#install-browsers) for more details. Or you can install no browsers at all and use existing [browser channels](https://playwright.dev/docs/browsers).
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* [Getting started](https://playwright.dev/docs/intro)
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* [Installation configuration](https://playwright.dev/docs/installation)
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* [API reference](https://playwright.dev/docs/api/class-playwright)
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## Capabilities
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### Resilient • No flaky tests
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**Auto-wait**. Playwright waits for elements to be actionable prior to performing actions. It also has a rich set of introspection events. The combination of the two eliminates the need for artificial timeouts - a primary cause of flaky tests.
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**Web-first assertions**. Playwright assertions are created specifically for the dynamic web. Checks are automatically retried until the necessary conditions are met.
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**Tracing**. Configure test retry strategy, capture execution trace, videos and screenshots to eliminate flakes.
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### No trade-offs • No limits
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Browsers run web content belonging to different origins in different processes. Playwright is aligned with the architecture of the modern browsers and runs tests out-of-process. This makes Playwright free of the typical in-process test runner limitations.
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**Multiple everything**. Test scenarios that span multiple tabs, multiple origins and multiple users. Create scenarios with different contexts for different users and run them against your server, all in one test.
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**Trusted events**. Hover elements, interact with dynamic controls and produce trusted events. Playwright uses real browser input pipeline indistinguishable from the real user.
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Test frames, pierce Shadow DOM. Playwright selectors pierce shadow DOM and allow entering frames seamlessly.
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### Full isolation • Fast execution
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**Browser contexts**. Playwright creates a browser context for each test. Browser context is equivalent to a brand new browser profile. This delivers full test isolation with zero overhead. Creating a new browser context only takes a handful of milliseconds.
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**Log in once**. Save the authentication state of the context and reuse it in all the tests. This bypasses repetitive log-in operations in each test, yet delivers full isolation of independent tests.
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### Powerful Tooling
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**[Codegen](https://playwright.dev/docs/codegen)**. Generate tests by recording your actions. Save them into any language.
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**[Playwright inspector](https://playwright.dev/docs/inspector)**. Inspect page, generate selectors, step through the test execution, see click points and explore execution logs.
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**[Trace Viewer](https://playwright.dev/docs/trace-viewer)**. Capture all the information to investigate the test failure. Playwright trace contains test execution screencast, live DOM snapshots, action explorer, test source and many more.
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Looking for Playwright for [TypeScript](https://playwright.dev/docs/intro), [JavaScript](https://playwright.dev/docs/intro), [Python](https://playwright.dev/python/docs/intro), [.NET](https://playwright.dev/dotnet/docs/intro), or [Java](https://playwright.dev/java/docs/intro)?
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## Examples
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To learn how to run these Playwright Test examples, check out our [getting started docs](https://playwright.dev/docs/intro).
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#### Page screenshot
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This code snippet navigates to Playwright homepage and saves a screenshot.
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```TypeScript
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import { test } from '@playwright/test';
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test('Page Screenshot', async ({ page }) => {
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await page.goto('https://playwright.dev/');
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await page.screenshot({ path: `example.png` });
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});
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```
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#### Mobile and geolocation
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This snippet emulates Mobile Safari on a device at given geolocation, navigates to maps.google.com, performs the action and takes a screenshot.
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```TypeScript
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import { test, devices } from '@playwright/test';
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test.use({
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...devices['iPhone 13 Pro'],
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locale: 'en-US',
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geolocation: { longitude: 12.492507, latitude: 41.889938 },
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permissions: ['geolocation'],
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})
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test('Mobile and geolocation', async ({ page }) => {
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await page.goto('https://maps.google.com');
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await page.getByText('Your location').click();
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await page.waitForRequest(/.*preview\/pwa/);
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await page.screenshot({ path: 'colosseum-iphone.png' });
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});
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```
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#### Evaluate in browser context
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This code snippet navigates to example.com, and executes a script in the page context.
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```TypeScript
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import { test } from '@playwright/test';
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test('Evaluate in browser context', async ({ page }) => {
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await page.goto('https://www.example.com/');
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const dimensions = await page.evaluate(() => {
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return {
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width: document.documentElement.clientWidth,
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height: document.documentElement.clientHeight,
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deviceScaleFactor: window.devicePixelRatio
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}
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});
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console.log(dimensions);
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});
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```
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#### Intercept network requests
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This code snippet sets up request routing for a page to log all network requests.
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```TypeScript
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import { test } from '@playwright/test';
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test('Intercept network requests', async ({ page }) => {
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// Log and continue all network requests
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await page.route('**', route => {
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console.log(route.request().url());
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route.continue();
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});
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await page.goto('http://todomvc.com');
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});
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```
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## Resources
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* [Documentation](https://playwright.dev/docs/intro)
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* [API reference](https://playwright.dev/docs/api/class-playwright/)
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* [Contribution guide](CONTRIBUTING.md)
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* [Changelog](https://github.com/microsoft/playwright/releases)
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