hoangnguyen0403/common-web-visual-testing
skills/common/common-web-visual-testing/SKILL.md
Standardizes visual audits, responsive design, and behavioral testing for web apps.
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Last scanned: May 10, 2026, 2:42 AM193.8s6 files scanned
SKILL.md
- name:
- common-web-visual-testing
- description:
- Standardizes visual audits, responsive design, and behavioral testing for web apps.
🌐 Web Visual & Behavioral Testing
Priority: P1 (HIGH)
[!IMPORTANT] Tier 2 (Methodology): Strategy web UI/UX audit. Tier 3 (Domain): Responsive, A11y (WCAG), Browser Engine quirk.
🧪 Testing Mindset (Comparative Audit)
Visual test best as Comparative Audit loop:
- Baseline (Before): Capture
snapshot --aria+screenshotprod/main. - Implementation (After): Capture same local/feature.
- Audit: Compare state for regression, CLS, Aria drift.
📋 Scenario Matrix
| Change Type | Scenarios to Run | | :--- | :--- | | CSS/Layout | Responsive Audit + Hover + CLS Check | | Forms/Input | Validation Msg + Focus State + Error Boundary | | Navigation | URL Sync + Sticky Header + Back-Button Persistence | | Assets/Fonts | Lazy Load + Icon Check + LCP Audit | | Accessibility | Tab Order + Aria-Snapshot + Color Contrast |
🚫 Anti-Patterns
- Single-Viewport: Never verify Desktop only. Check Mobile (375px) + Tablet (768px).
- Ignore Layout Shift: Check loading state (skeleton) → no page jump.
- Unmasked Dynamic: MUST mask timestamp/balance via
--maskor JS (opacity: 0). Avoid "False Regression". - Blind Assertion: Use
playwright-cli snapshot --ariaverify state before done. - External Dependency: Mock/bypass 3rd-party (Chat, Analytics) → prevent flakiness.
🔗 References
- playwright-cli: playwright-cli
- Diagnostic Decoder: diagnostic-decoder
- DOM vs Screenshot: dom-snapshot-vs-screenshot
- Login & Data: login-and-test-data
- Scenario Details: scenarios
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