Playwright на Python - первые тесты. Современная АЛЬТЕРНАТИВА SELENIUM

Tech concepts / product features covered

• Playwright as an alternative to Selenium Playwright is introduced as a browser automation tool, with an intention to later compare it against Selenium.

• Test tooling stack

  • Playwright is used as a third-party Python module.
  • A virtual environment is used for dependency installation.
  • Playwright + pytest are installed together (via a single command referenced in the guide), rather than installing Playwright alone.
  • An additional setup step is run to install required browser binaries/drivers.

• Cross-browser testing

  • Playwright installs and tests against its own browser versions of:
    • Chromium
    • Mozilla (Firefox)

• Test structure rules for pytest

  • Test files should start with test (e.g., Test_First...).
  • Tests are written to work with pytest fixtures.

• Playwright test API concepts

  • Uses the page fixture to perform browser actions.
  • Navigation is done with: page.goto("...")
  • Element location uses multiple locator strategies, including:
    • Role-based locator: getByRole("link", name="Русский")
    • Text-based checks: waits for text to appear/be visible before asserting
    • ID / CSS-selector-based locator: uses a locator with a CSS selector (described as a “CSS selector looks like…” pattern, e.g., #id)
  • Assertions use expectations such as:
    • element is visible
    • element contains specific text, including waiting for the relevant state before asserting

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Guides / tutorial flow (what the video teaches)

1. Project setup (PyCharm + Python)

   • Create a Python project.
   • Create a virtual environment.
   • Install pytest + Playwright together.
   • Run a command to install browser dependencies (reported ~5 minutes for downloads).
   • A warning about the OS is mentioned, but it’s treated as normal.

2. Write and run the first test (Wikipedia)

   • Open wikipedia.org.
   • Click the Russian link using the role locator.
   • Assert that “Welcome to Wikipedia” is visible on the resulting page.
   • Run the test with pytest (as referenced via an IDE button).
   • Mentions using -s to show more output; even if it opens another screen, the test still passes.

3. Create a second test to navigate deeper and use other locators

   • Create test Wiki 2.
   • Reuse the initial steps to switch to Russian Wikipedia.
   • Click Content then Discussion.
   • Verify the page title by checking text in specific elements.
   • Demonstrate searching by:
     • link name/text
     • tab-like elements
     • CSS selector by ID (using #... style)
   • Run again and note:
     • Playwright runs headless by default
     • Show how to run headed tests with --headed

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Review / analysis content

• Emphasizes Playwright’s convenience and flexibility for element search via multiple locator approaches.
• Highlights cross-browser support using Chromium + Firefox.
• Promises future videos covering:
  • additional locator types and wait/expect patterns
  • a comparison with Selenium, including pros/cons

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Main speakers / sources

• The video’s author/speaker (single presenter teaching Playwright setup and pytest-based tests).
• Referenced framework/library sources: Playwright, pytest, and browsers Chromium / Mozilla (Firefox).