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Automated Visual Regression Testing With Playwright
- Automated Visual Regression Testing with Playwright offers a solution to guard against visual regressions while refactoring stylesheets and introducing new features.
- Playwright's built-in visual comparison feature helps in comparing visual artifacts efficiently without relying on external packages.
- The setup involves creating a dedicated directory for visual testing, setting up dependencies, defining test environments, and configuring browsers.
- Snapshot testing with Playwright involves taking screenshots to establish baselines for comparison and identifying any visual changes.
- Automated generation of tests for every page using a web crawler and dynamically generating tests based on identified URLs simplifies the testing process.
- Exceptions in visual testing, like flakiness or randomness, can be handled by injecting custom CSS using Playwright.
- Adjusting viewport size for capturing full page screenshots and waiting for network idle state improves test accuracy but may increase resource usage.
- Despite the initial simplicity expected, implementing visual regression testing with Playwright requires careful setup and considerations like layout shifts and timeouts.
- The article discusses the author's journey to setting up automated visual regression testing with Playwright and reflects on the challenges and solutions discovered.
- The process involved leveraging Playwright's capabilities, configuring test environments, generating tests dynamically, handling exceptions, and optimizing page capture for accurate testing results.
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