This document tracks all testing coverage for this component to ensure comprehensive validation and accessibility compliance.

**Last Updated**: 2025-10-22  
**Test Coverage**: 90%  
**Accessibility Score**: WCAG AA Compliant ✅

## 🧪 Test Summary

### Unit Tests (Vitest)

✅ **24 unit tests** implemented

- Component rendering, properties, events, and methods tested

### ♿ Accessibility Tests

✅ **ARIA attributes and roles tested**
✅ **Keyboard navigation tested**
✅ **Focus management tested**
✅ **Accessibility documented in Storybook**
✅ **Automated accessibility testing (axe-core)**
✅ **Keyboard interaction testing**

### 🖱️ Interactive Tests (Cypress)

✅ **Component testing** implemented

- User interaction testing
- Keyboard navigation testing
- Responsive behavior testing

### 📱 Responsive & Visual Tests

✅ **Storybook stories** available

- 16 visual test scenarios

### 🔧 E2E Integration Tests

⚠️ **E2E tests recommended** for complex workflows

## 📊 Detailed Accessibility Compliance

### WCAG 2.1 AA Requirements

✅ **ARIA Implementation**: Roles, labels, and descriptions properly set
✅ **Keyboard Navigation**: Tab order and keyboard interactions tested
✅ **Focus Management**: Focus states and indicators working
✅ **Automated Testing**: axe-core accessibility validation integrated

### Screen Reader Compatibility

- ⚠️ **Manual testing needed** with VoiceOver, NVDA, and JAWS
- Component should announce purpose, state, and interactions clearly
- Content should be logically structured for screen readers



















## 📋 Detailed Unit Test Coverage

The following 27 unit tests ensure comprehensive validation of the component:

### Component Initialization
- **should create tooltip element**: Should create tooltip element.
- **should have default properties**: Should have default properties.
- **should allow setting element ID**: Should allow setting element ID.
- **should render light DOM for USWDS compatibility**: Should render light DOM for USWDS compatibility.

### Property Changes
- **should update text property**: Tests text property updates and reflects changes
- **should update classes property**: Tests classes property updates and reflects changes

### DOM Restructuring
- **should move slotted content into USWDS structure**: Should move slotted content into USWDS structure.
- **should add tabindex to non-focusable elements**: Should add tabindex to non-focusable elements.
- **should handle naturally focusable elements correctly**: Should handle naturally focusable elements correctly.
- **should handle multiple slotted elements**: Should handle multiple slotted elements.

### Event Handling
- **should show tooltip on mouseenter**: Should show tooltip on mouseenter.
- **should hide tooltip on mouseleave**: Should hide tooltip on mouseleave.
- **should show tooltip on focus**: Should show tooltip on focus.
- **should hide tooltip on blur**: Should hide tooltip on blur.
- **should not hide tooltip if already hidden**: Should not hide tooltip if already hidden.

### Public API Methods
- **should show tooltip via show() method**: Should show tooltip via show() method.
- **should hide tooltip via hide() method**: Should hide tooltip via hide() method.
- **should toggle tooltip via toggle() method**: Should toggle tooltip via toggle() method.

### Event Listener Cleanup
- **should clean up event listeners on disconnect**: Should clean up event listeners on disconnect.

### Edge Cases and Error Handling
- **should handle empty slotted content gracefully**: Tests behavior with empty slotted content gracefully values
- **should handle missing tooltip body element gracefully**: Should handle missing tooltip body element gracefully.
- **should handle positioning without trigger element**: Should handle positioning without trigger element.

### Component Lifecycle Stability (CRITICAL)
- **should remain in DOM after property updates (not auto-dismiss)**: Should remain in DOM after property updates (not auto-dismiss).
- **should maintain DOM presence during rapid show/hide cycles**: Should maintain DOM presence during rapid show/hide cycles.

### JavaScript Implementation Validation
- **should pass JavaScript implementation validation**: Should pass JavaScript implementation validation.

### Accessibility
- **should pass comprehensive accessibility tests (same as Storybook)**: Should pass comprehensive accessibility tests (same as Storybook).
- **should pass comprehensive USWDS compliance tests (prevents structural issues)**: Should pass comprehensive USWDS compliance tests (prevents structural issues).


## 🚨 Testing Gaps & Recommendations

### ✅ Good Coverage

Component has solid test coverage. Continue maintaining and expanding as needed.

## 📝 Test Maintenance

- Tests are automatically tracked when test files change
- Run `npm run test` for unit tests
- Run `npm run cypress:run` for interactive tests
- View `npm run storybook` for visual tests
- Accessibility tests integrated in CI/CD pipeline

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_This testing registry is automatically maintained by git hooks and scripts._  
_See `docs/TESTING_DOCUMENTATION.md` for automation details._