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

**Last Updated**: 2025-10-19  
**Test Coverage**: 90%  
**Accessibility Score**: WCAG AA Compliant ✅

## 🧪 Test Summary

### Unit Tests (Vitest)

✅ **69 unit tests** implemented

- Component rendering, properties, events, and methods tested

### ♿ Accessibility Tests

✅ **ARIA attributes and roles 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

- 7 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 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 50 unit tests ensure comprehensive validation of the component:

### Properties
- **should have default properties**: Should have default properties.
- **should update steps property**: Tests steps property updates and reflects changes
- **should update currentStep property**: Tests currentStep property updates and reflects changes
- **should update boolean properties**: Should update boolean properties.
- **should update ariaLabel property**: Tests ariaLabel property updates and reflects changes

### Rendering
- **should render step indicator container with correct classes**: Should render step indicator container with correct classes.
- **should apply modifier classes correctly**: Should apply modifier classes correctly.
- **should render step segments with correct status classes**: Should render step segments with correct status classes.
- **should render step labels when showLabels is true**: Verifies step labels renders correctly when showLabels is true
- **should hide step labels when showLabels is false**: Should hide step labels when showLabels is false.
- **should render current step header information**: Should render current step header information.
- **should render slot content when no steps provided**: Verifies slot content renders correctly when no steps provided

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

### Step Status Management
- **should automatically update step statuses based on currentStep**: Should automatically update step statuses based on currentStep.
- **should sync currentStep from steps array on initialization**: Should sync currentStep from steps array on initialization.
- **should handle edge cases with currentStep changes**: Should handle edge cases with currentStep changes.

### Public API Methods
- **should advance to next step using nextStep()**: Should advance to next step using nextStep().
- **should not advance past last step**: Should not advance past last step.
- **should go back to previous step using previousStep()**: Should go back to previous step using previousStep().
- **should not go before first step**: Should not go before first step.
- **should go to specific step using goToStep()**: Should go to specific step using goToStep().
- **should ignore invalid step numbers in goToStep()**: Should ignore invalid step numbers in goToStep().
- **should mark specific step complete using markStepComplete()**: Should mark specific step complete using markStepComplete().
- **should ignore invalid step numbers in markStepComplete()**: Should ignore invalid step numbers in markStepComplete().

### Accessibility
- **should have proper ARIA attributes**: Should have proper ARIA attributes.
- **should pass comprehensive accessibility tests (same as Storybook)**: Should pass comprehensive accessibility tests (same as Storybook).
- **should include screen reader text for step status**: Should include screen reader text for step status.
- **should have screen reader text for step counter**: Should have screen reader text for step counter.
- **should set aria-hidden on segments when labels are hidden**: Should set aria-hidden on segments when labels are hidden.

### 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.

### Edge Cases
- **should handle empty steps array gracefully**: Tests behavior with empty steps array gracefully values
- **should handle rapid property changes**: Validates rapid property changes are handled correctly
- **should handle null and undefined values**: Should handle null and undefined values.

### Performance
- **should handle large step arrays efficiently**: Should handle large step arrays efficiently.
- **should not create memory leaks with step updates**: Should not create memory leaks with step updates.

### Application Use Cases
- **should handle federal benefits application workflow**: Should handle federal benefits application workflow.
- **should handle tax filing workflow**: Should handle tax filing workflow.
- **should handle security clearance application**: Should handle security clearance application.

### 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 component state during rapid property changes**: Should maintain component state during rapid property changes.
- **should handle complex step operations without disconnection**: Should handle complex step operations without disconnection.

### Event System Stability (CRITICAL)
- **should not interfere with other components after event handling**: Should not interfere with other components after event handling.
- **should handle rapid step navigation without component removal**: Should handle rapid step navigation without component removal.
- **should handle event pollution without component removal**: Should handle event pollution without component removal.

### Step State Management Stability (CRITICAL)
- **should handle complex step status changes without disconnection**: Should handle complex step status changes without disconnection.
- **should handle step count variations without disconnection**: Should handle step count variations without disconnection.

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

### Storybook Integration (CRITICAL)
- **should render in Storybook without auto-dismissing**: Should render in Storybook without auto-dismissing.


## 🚨 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._
