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

**Last Updated**: 2025-10-19  
**Test Coverage**: 60%  
**Accessibility Score**: WCAG AA Compliant ✅

## 🧪 Test Summary

### Unit Tests (Vitest)

✅ **54 unit tests** implemented

- Component rendering, properties, events, and methods tested

### ♿ Accessibility Tests

✅ **ARIA attributes and roles tested**
✅ **Keyboard navigation tested**
✅ **Focus management tested**
✅ **Disabled state accessibility tested**

### 🖱️ Interactive Tests (Cypress)

⚠️ **Interactive tests needed**

- User interactions (click, focus, keyboard)
- Form integration testing
- State transition validation

### 📱 Responsive & Visual Tests

✅ **Storybook stories** available

- 11 visual test scenarios
- Disabled 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 states and indicators working
⚠️ **Automated Testing**: Recommend axe-core integration for comprehensive a11y testing

### 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 55 unit tests ensure comprehensive validation of the component:

### Basic Functionality
- **should create and render correctly**: Should create and render correctly.
- **should have default properties**: Should have default properties.
- **should render empty button group with slot**: Should render empty button group with slot.

### Properties
- **should handle type changes**: Should handle type changes.
- **should handle buttons array changes**: Should handle buttons array changes.
- **should render programmatic buttons instead of slot when buttons provided**: Verifies programmatic buttons instead of slot renders correctly when buttons provided

### Button Rendering
- **should render buttons with correct text**: Should render buttons with correct text.
- **should render buttons with correct CSS classes**: Should render buttons with correct CSS classes.
- **should render buttons with correct types**: Should render buttons with correct types.
- **should handle button disabled state**: Should handle button disabled state.
- **should render each button in a list item**: Should render each button in a list item.

### Button Types and Variants
- **should handle all button types**: Should handle all button types.
- **should default to button type when not specified**: Should default to button type when not specified.
- **should handle all button variants**: Should handle all button variants.
- **should handle buttons without variant specified**: Should handle buttons without variant specified.

### Group Types
- **should render default button group**: Should render default button group.
- **should render segmented button group**: Should render segmented button group.
- **should update group type dynamically**: Should update group type dynamically.

### Event Handling
- **should dispatch button-click event when button clicked**: Ensures button-click event event is dispatched when button clicked
- **should dispatch events for all buttons**: Should dispatch events for all buttons.
- **should call onclick handler if provided**: Should call onclick handler if provided.
- **should have correct event properties**: Should have correct event properties.
- **should not dispatch events for disabled buttons**: Should not dispatch events for disabled buttons.

### Slot Usage
- **should render slot when no buttons provided**: Verifies slot renders correctly when no buttons provided
- **should support slotted content**: Should support slotted content.
- **should prefer programmatic buttons over slot**: Should prefer programmatic buttons over slot.

### Complex Scenarios
- **should handle dynamic button updates**: Should handle dynamic button updates.
- **should handle mixed button configurations**: Should handle mixed button configurations.
- **should handle switching between slot and programmatic modes**: Should handle switching between slot and programmatic modes.
- **should handle empty and edge cases**: Tests behavior with empty and edge cases values

### Accessibility
- **should have proper semantic structure**: Should have proper semantic structure.
- **should have focusable buttons**: Should have focusable buttons.
- **should support keyboard interaction**: Should support keyboard interaction.
- **should maintain button semantics**: Should maintain button semantics.
- **should handle disabled state properly**: Should handle disabled state properly.

### Form Integration
- **should work within forms**: Should work within forms.
- **should handle form submission types correctly**: Should handle form submission types correctly.

### Error Handling
- **should handle malformed button objects**: Should handle malformed button objects.
- **should handle null and undefined values gracefully**: Should handle null and undefined values gracefully.

### CRITICAL: Component Lifecycle Stability
- **should remain in DOM after property changes**: Should remain in DOM after property changes.
- **should maintain element stability during button array updates**: Should maintain element stability during button array updates.
- **should preserve DOM connection through slot to buttons transition**: Should preserve DOM connection through slot to buttons transition.

### CRITICAL: Event System Stability
- **should not pollute global event handling**: Should not pollute global event handling.
- **should maintain stability during button interactions**: Should maintain stability during button interactions.
- **should maintain stability during rapid button array changes**: Should maintain stability during rapid button array changes.

### CRITICAL: Button Group State Management Stability
- **should maintain DOM connection during complex button configurations**: Should maintain DOM connection during complex button configurations.
- **should preserve element stability during button type variations**: Should preserve element stability during button type variations.
- **should maintain stability during button variant changes**: Should maintain stability during button variant changes.

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

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

### CRITICAL: Storybook Integration
- **should render in Storybook-like environment without auto-dismiss**: Should render in Storybook-like environment without auto-dismiss.
- **should handle Storybook args updates without component removal**: Should handle Storybook args updates without component removal.
- **should maintain stability during complex Storybook interactions**: Should maintain stability during complex Storybook interactions.


## 🚨 Testing Gaps & Recommendations

### ⚠️ Coverage Below 70%

Current coverage is 60%. Consider adding:

- Interactive testing with Cypress

## 📝 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._