Installation
Playwright was created specifically to accommodate the needs of end-to-end testing. Playwright supports all modern rendering engines including Chromium, WebKit, and Firefox. Test on Windows, Linux, and macOS, locally or on CI, headless or headed with native mobile emulation.
Playwright recommends using the official Playwright Pytest plugin to write end-to-end tests. It provides context isolation, running it on multiple browser configurations out of the box. Alternatively you can use the library to manually write the testing infrastructure with your preferred test-runner. The Pytest plugin utilizes the sync version of Playwright, there is also an async version accessible via the library.
Get started by installing Playwright and running the example test to see it in action.
Install the Pytest plugin:
pip install pytest-playwright
Install the required browsers:
playwright install
Add Example Test
Create a test_my_application.py file inside the current working directory or in a sub-directory with the code below:
import re
from playwright.sync_api import Page, expect
def test_homepage_has_Playwright_in_title_and_get_started_link_linking_to_the_intro_page(page: Page):
page.goto("https://playwright.dev/")
# Expect a title "to contain" a substring.
expect(page).to_have_title(re.compile("Playwright"))
# create a locator
get_started = page.locator("text=Get Started")
# Expect an attribute "to be strictly equal" to the value.
expect(get_started).to_have_attribute("href", "/docs/intro")
# Click the get started link.
get_started.click()
# Expects the URL to contain intro.
expect(page).to_have_url(re.compile(".*intro"))
Running the Example Test
By default tests will be run on chromium. This can be configured via the CLI options. Tests are run in headless mode meaning no browser UI will open up when running the tests. Results of the tests and test logs will be shown in the terminal.
pytest
See our doc on Running Tests to learn more about running tests in headed mode, running multiple tests, running specific tests etc.