Engineering
Testing React Flow Apps with Playwright and Component Tests
Stable selectors, waiting for canvas readiness, and mocking viewport transforms for CI-friendly end-to-end tests.
2025-04-1810 min readReact Flow, Testing, Playwright
Prefer data-testid on nodes and edges over pixel coordinates. Wait for React Flow initialization before asserting connections. Snapshot SVG sparingly; assert graph invariants instead.
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