Developer Shares Playwright Solution for Visual Testing with API Mocking

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A developer has published their solution to Challenge 3, focused on visual testing combined with API mocking using Playwright. The approach addresses real-world problems such as missing chart renders and overlapping UI buttons caused by frequent API changes in dashboard applications. The solution involves mocking API endpoints to return fixed data, then capturing and comparing screenshot snapshots to detect unintended UI changes. A custom VisualHelper class was built with methods to check full-page or element-level snapshots, with configurable timeout and pixel-difference thresholds. Playwright's built-in toHaveScreenshot() function serves as the free alternative to paid visual testing tools like Percy, Applitools Eyes, and Sauce Visual.

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