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

**Last Updated**: 2025-10-20  
**Test Coverage**: 100%  
**Accessibility Score**: WCAG AA Compliant ✅

## 🧪 Test Summary

### Unit Tests (Vitest)

✅ **87 unit tests** implemented

- Component rendering, properties, events, and methods tested

### ♿ Accessibility Tests

✅ **ARIA attributes and roles tested**
✅ **Keyboard navigation tested**
✅ **Disabled state accessibility 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 & Visual Tests

✅ **Storybook stories** available

- 13 visual test scenarios
- Disabled state visually tested
- Error state visually tested

### 🔧 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 behavior needs validation
✅ **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 77 unit tests ensure comprehensive validation of the component:

### Properties
- **should have default properties**: Should have default properties.
- **should update value property**: Tests value property updates and reflects changes
- **should update name property**: Tests name property updates and reflects changes
- **should update inputId property**: Tests inputId property updates and reflects changes
- **should update label property**: Tests label property updates and reflects changes
- **should update hint property**: Tests hint property updates and reflects changes
- **should update placeholder property**: Tests placeholder property updates and reflects changes
- **should update prefix property**: Tests prefix property updates and reflects changes
- **should update suffix property**: Tests suffix property updates and reflects changes
- **should update prefixIcon property**: Tests prefixIcon property updates and reflects changes
- **should update suffixIcon property**: Tests suffixIcon property updates and reflects changes
- **should update boolean properties**: Should update boolean properties.
- **should update type property**: Tests type property updates and reflects changes
- **should update autocomplete property**: Tests autocomplete property updates and reflects changes

### Rendering
- **should render form group with label and input**: Should render form group with label and input.
- **should render input group container**: Should render input group container.
- **should render hint when provided**: Verifies hint renders correctly when provided
- **should not render hint when empty**: Ensures component does not render hint when empty
- **should render required indicator**: Should render required indicator.
- **should render prefix text**: Should render prefix text.
- **should render suffix text**: Should render suffix text.
- **should render prefix icon**: Should render prefix icon.
- **should render suffix icon**: Should render suffix icon.
- **should prioritize icon over text for prefix**: Should prioritize icon over text for prefix.
- **should prioritize icon over text for suffix**: Should prioritize icon over text for suffix.
- **should not render prefix when empty**: Ensures component does not render prefix when empty
- **should not render suffix when empty**: Ensures component does not render suffix when empty

### USWDS HTML Structure
- **should match USWDS input group HTML structure**: Should match USWDS input group HTML structure.
- **should maintain proper DOM hierarchy**: Should maintain proper DOM hierarchy.

### Event Handling
- **should dispatch input-change event on input**: Should dispatch input-change event on input.
- **should dispatch input-change event on change**: Should dispatch input-change event on change.
- **should update component value when input changes**: Should update component value when input changes.
- **should have bubbling and composed events**: Should have bubbling and composed events.

### Accessibility
- **should associate label with input**: Should associate label with input.
- **should associate hint with input using aria-describedby**: Should associate hint with input using aria-describedby.
- **should mark prefix and suffix as decorative**: Should mark prefix and suffix as decorative.
- **should mark icons as decorative**: Should mark icons as decorative.
- **should have proper input attributes**: Should have proper input attributes.

### Light DOM Rendering
- **should use light DOM rendering**: Should use light DOM rendering.
- **should apply USWDS classes directly to light DOM**: Should apply USWDS classes directly to light DOM.

### Input Types
- **should handle text input type**: Should handle text input type.
- **should handle email input type**: Should handle email input type.
- **should handle number input type**: Should handle number input type.
- **should handle tel input type**: Should handle tel input type.
- **should handle url input type**: Should handle url input type.
- **should handle password input type**: Should handle password input type.

### Edge Cases
- **should handle empty values gracefully**: Tests behavior with empty values gracefully values
- **should handle null and undefined values**: Should handle null and undefined values.
- **should handle rapid property changes**: Validates rapid property changes are handled correctly
- **should handle both prefix and suffix together**: Should handle both prefix and suffix together.
- **should handle icon and text combinations**: Should handle icon and text combinations.

### Performance
- **should handle multiple rapid input changes efficiently**: Should handle multiple rapid input changes efficiently.
- **should not create memory leaks with event handling**: Should not create memory leaks with event handling.

### Application Use Cases
- **should handle currency input with dollar prefix**: Should handle currency input with dollar prefix.
- **should handle email input with domain suffix**: Should handle email input with domain suffix.
- **should handle phone number input with country prefix**: Should handle phone number input with country prefix.
- **should handle website URL with protocol prefix**: Should handle website URL with protocol prefix.
- **should handle Social Security Number with formatting**: Should handle Social Security Number with formatting.
- **should handle tax ID input with prefix**: Should handle tax ID input with prefix.
- **should handle percentage input with suffix**: Should handle percentage input with suffix.
- **should handle search input with search icon**: Should handle search input with search icon.

### CRITICAL: Component Lifecycle Stability
- **should remain in DOM after property changes**: Should remain in DOM after property changes.
- **should maintain DOM connection during rapid property updates**: Should maintain DOM connection during rapid property updates.
- **should survive complete property reset cycles**: Should survive complete property reset cycles.

### CRITICAL: Event System Stability
- **should not pollute global event handlers**: Should not pollute global event handlers.
- **should handle custom events without side effects**: Tests custom event handling and response
- **should maintain DOM connection during event handling**: Should maintain DOM connection during event handling.

### CRITICAL: Input State Management Stability
- **should maintain DOM connection during prefix/suffix transitions**: Should maintain DOM connection during prefix/suffix transitions.
- **should maintain DOM connection during input type changes**: Should maintain DOM connection during input type changes.
- **should handle input state changes without DOM removal**: Should handle input state changes without DOM removal.

### CRITICAL: Storybook Integration Stability
- **should maintain DOM connection during args updates**: Should maintain DOM connection during args updates.
- **should survive Storybook control panel interactions**: Should survive Storybook control panel interactions.
- **should handle Storybook story switching**: Should handle Storybook story switching.

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

### Accessibility Compliance (CRITICAL)
- **should pass comprehensive accessibility tests (same as Storybook)**: Should pass comprehensive accessibility tests (same as Storybook).
- **should maintain accessibility during dynamic updates**: Should maintain accessibility during dynamic updates.
- **should be accessible in form contexts**: Ensures component meets accessibility standards and guidelines


## 🚨 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._