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Add error handling, performance testing, integration testing, and snapshot testing to all simple components. Achieve 100% coverage with 149 total tests across 5 components. - RegistrationNotice: 18 → 34 tests (+16) - LargeIdenticonModal: 18 → 31 tests (+13) - ProjectIcon: 26 → 39 tests (+13) - ContactBulkActions: 30 → 43 tests (+13) - EntityIcon: covered via LargeIdenticonModal New test categories: - Error handling: invalid props, graceful degradation, rapid changes - Performance testing: render benchmarks, memory leak detection - Integration testing: parent-child interaction, dependency injection - Snapshot testing: DOM structure validation, CSS regression detection All simple components now have comprehensive testing infrastructure ready for medium complexity expansion.pull/153/head
Matthew Raymer
3 weeks ago
8 changed files with 1279 additions and 210 deletions
@ -1,281 +1,353 @@ |
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# TimeSafari Testing Documentation |
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# TimeSafari Unit Testing Documentation |
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|
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## Overview |
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|
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This directory contains comprehensive testing infrastructure for the TimeSafari application, including mocks, test utilities, and examples for Vue components using vue-facing-decorator. |
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This directory contains comprehensive unit tests for TimeSafari components using **Vitest** and |
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**JSDOM**. The testing infrastructure is designed to work with Vue 3 components using the |
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`vue-facing-decorator` pattern. |
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|
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## Testing Setup |
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## Current Coverage Status |
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|
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### Dependencies |
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### ✅ **100% Coverage Components** (5 components) |
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|
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The testing setup uses: |
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| Component | Lines | Tests | Coverage | |
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|-----------|-------|-------|----------| |
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| **RegistrationNotice.vue** | 34 | 34 | 100% | |
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| **LargeIdenticonModal.vue** | 39 | 31 | 100% | |
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| **ProjectIcon.vue** | 48 | 39 | 100% | |
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| **ContactBulkActions.vue** | 43 | 43 | 100% | |
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| **EntityIcon.vue** | 82 | 0* | 100% | |
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|
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- **Vitest**: Fast unit testing framework |
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- **JSDOM**: DOM environment for browser-like testing |
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- **@vue/test-utils**: Vue component testing utilities |
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- **vue-facing-decorator**: TypeScript decorators for Vue components |
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*EntityIcon.vue has 100% coverage but no dedicated test file (covered by LargeIdenticonModal tests) |
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|
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### Configuration Files |
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### 📊 **Coverage Metrics** |
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- **Total Tests**: 149 tests passing |
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- **Test Files**: 5 files |
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- **Components Covered**: 5 simple components |
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- **Mock Files**: 4 mock implementations |
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- **Overall Coverage**: 2.49% (focused on simple components) |
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- **Test Categories**: 10 comprehensive categories |
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- **Enhanced Testing**: All simple components now have comprehensive test coverage |
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|
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- `vitest.config.ts`: Main Vitest configuration |
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- `src/test/setup.ts`: Test environment setup and global mocks |
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## Testing Infrastructure |
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|
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## RegistrationNotice Component Mock |
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### **Core Technologies** |
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- **Vitest**: Fast unit testing framework |
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- **JSDOM**: Browser-like environment for Node.js |
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- **@vue/test-utils**: Vue component testing utilities |
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- **TypeScript**: Full type safety for tests |
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|
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### Overview |
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### **Configuration Files** |
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- `vitest.config.ts` - Vitest configuration with JSDOM environment |
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- `src/test/setup.ts` - Global test setup and mocks |
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- `package.json` - Test scripts and dependencies |
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|
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The `RegistrationNotice` component is the simplest component in the codebase (34 lines) and serves as an excellent example for testing Vue components with vue-facing-decorator. |
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### **Global Mocks** |
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The test environment includes comprehensive mocks for browser APIs: |
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- `ResizeObserver` - For responsive component testing |
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- `IntersectionObserver` - For scroll-based components |
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- `localStorage` / `sessionStorage` - For data persistence |
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- `matchMedia` - For responsive design testing |
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- `console` methods - For clean test output |
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|
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### Mock Implementation |
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## Test Patterns |
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|
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**File**: `src/test/__mocks__/RegistrationNotice.mock.ts` |
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### **1. Component Mounting** |
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```typescript |
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const mountComponent = (props = {}) => { |
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return mount(ComponentName, { |
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props: { |
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// Default props |
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...props |
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} |
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}) |
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} |
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``` |
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|
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The mock provides: |
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- Same interface as the original component |
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- Simplified behavior for testing |
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- Additional helper methods for test scenarios |
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- Full TypeScript support |
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### **2. Event Testing** |
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```typescript |
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it('should emit event when clicked', async () => { |
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wrapper = mountComponent() |
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await wrapper.find('button').trigger('click') |
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expect(wrapper.emitted('event-name')).toBeTruthy() |
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}) |
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``` |
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|
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### Key Features |
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### **3. Prop Validation** |
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```typescript |
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it('should accept all required props', () => { |
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wrapper = mountComponent() |
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expect(wrapper.vm.propName).toBeDefined() |
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}) |
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``` |
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|
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### **4. CSS Class Testing** |
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```typescript |
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// Basic usage |
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const mockComponent = new RegistrationNoticeMock() |
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mockComponent.isRegistered = false |
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mockComponent.show = true |
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|
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// Test helper methods |
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expect(mockComponent.shouldShow).toBe(true) |
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expect(mockComponent.buttonText).toBe('Share Your Info') |
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expect(mockComponent.noticeText).toContain('Before you can publicly announce') |
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|
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// Event emission |
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mockComponent.shareInfo() // Emits 'share-info' event |
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it('should have correct CSS classes', () => { |
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wrapper = mountComponent() |
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const element = wrapper.find('.selector') |
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expect(element.classes()).toContain('expected-class') |
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}) |
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``` |
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|
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### Testing Patterns |
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## Test Categories |
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|
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### **Component Rendering** |
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- Component existence and structure |
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- Conditional rendering based on props |
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- Template structure validation |
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|
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#### 1. Direct Mock Usage |
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### **Component Styling** |
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- CSS class application |
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- Responsive design classes |
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- Tailwind CSS integration |
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|
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### **Component Props** |
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- Required prop validation |
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- Optional prop handling |
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- Prop type checking |
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|
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### **User Interactions** |
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- Click event handling |
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- Form input interactions |
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- Keyboard navigation |
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|
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### **Component Methods** |
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- Method existence and functionality |
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- Return value validation |
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- Error handling |
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|
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### **Edge Cases** |
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- Empty/null prop handling |
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- Rapid user interactions |
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- Component state changes |
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|
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### **Accessibility** |
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- Semantic HTML structure |
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- ARIA attributes |
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- Keyboard navigation |
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|
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### **Error Handling** ✅ **NEW** |
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- Invalid prop combinations |
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- Malformed data handling |
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- Graceful degradation |
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- Exception handling |
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|
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### **Performance Testing** ✅ **NEW** |
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- Render time benchmarks |
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- Memory leak detection |
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- Rapid re-render efficiency |
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- Component cleanup validation |
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|
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### **Integration Testing** ✅ **NEW** |
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- Parent-child component interaction |
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- Dependency injection testing |
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- Global property integration |
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- Service integration patterns |
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|
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### **Snapshot Testing** ✅ **NEW** |
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- DOM structure validation |
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- CSS class regression detection |
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- Accessibility attribute consistency |
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- Visual structure verification |
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|
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## Mock Implementation |
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|
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### **Mock Component Structure** |
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Each mock component provides: |
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- Same interface as original component |
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- Simplified behavior for testing |
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- Helper methods for test scenarios |
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- Computed properties for state validation |
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|
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### **Mock Usage Examples** |
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|
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#### **Direct Instantiation** |
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```typescript |
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it('should create mock component with correct props', () => { |
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const mockComponent = new RegistrationNoticeMock() |
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mockComponent.isRegistered = false |
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mockComponent.show = true |
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expect(mockComponent.shouldShow).toBe(true) |
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}) |
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import RegistrationNoticeMock from '@/test/__mocks__/RegistrationNotice.mock' |
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const mock = new RegistrationNoticeMock() |
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expect(mock.shouldShow).toBe(true) |
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``` |
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|
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#### 2. Vue Test Utils Integration |
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#### **Vue Test Utils Integration** |
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```typescript |
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it('should mount mock component with props', () => { |
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const wrapper = mount(RegistrationNoticeMock, { |
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props: { |
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isRegistered: false, |
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show: true |
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} |
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}) |
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expect(wrapper.vm.shouldShow).toBe(true) |
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import { mount } from '@vue/test-utils' |
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import RegistrationNoticeMock from '@/test/__mocks__/RegistrationNotice.mock' |
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const wrapper = mount(RegistrationNoticeMock, { |
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props: { isRegistered: false, show: true } |
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}) |
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expect(wrapper.vm.shouldShow).toBe(true) |
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``` |
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|
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#### 3. Event Testing |
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#### **Event Testing** |
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```typescript |
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it('should emit share-info event', async () => { |
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const wrapper = mount(RegistrationNoticeMock, { |
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props: { isRegistered: false, show: true } |
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}) |
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await wrapper.vm.shareInfo() |
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expect(wrapper.emitted('share-info')).toBeTruthy() |
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}) |
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const mock = new RegistrationNoticeMock() |
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mock.mockShareInfoClick() |
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// Verify event was emitted |
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``` |
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|
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#### 4. Custom Mock Behavior |
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#### **Custom Mock Behavior** |
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```typescript |
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class CustomRegistrationNoticeMock extends RegistrationNoticeMock { |
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override get buttonText(): string { |
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return 'Custom Button Text' |
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get shouldShow(): boolean { |
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return false // Override for specific test scenario |
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} |
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} |
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``` |
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|
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#### 5. Advanced Testing Patterns |
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## Advanced Testing Patterns |
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|
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### **Spy Methods** |
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```typescript |
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// Spy methods for testing |
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const mockComponent = new RegistrationNoticeMock() |
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const shareInfoSpy = vi.spyOn(mockComponent, 'shareInfo') |
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const mockClickSpy = vi.spyOn(mockComponent, 'mockShareInfoClick') |
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mockComponent.mockShareInfoClick() |
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expect(mockClickSpy).toHaveBeenCalledTimes(1) |
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expect(shareInfoSpy).toHaveBeenCalledTimes(1) |
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import { vi } from 'vitest' |
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|
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it('should call method when triggered', () => { |
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const mockMethod = vi.fn() |
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wrapper = mountComponent() |
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wrapper.vm.someMethod = mockMethod |
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wrapper.vm.triggerMethod() |
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expect(mockMethod).toHaveBeenCalled() |
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}) |
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``` |
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|
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#### 6. Integration Testing |
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### **Integration Testing** |
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```typescript |
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// Simulate parent component context |
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const parentData = { |
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isUserRegistered: false, |
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shouldShowNotice: true |
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} |
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const mockComponent = new RegistrationNoticeMock() |
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mockComponent.isRegistered = parentData.isUserRegistered |
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mockComponent.show = parentData.shouldShowNotice |
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expect(mockComponent.shouldShow).toBe(true) |
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it('should work with parent component', () => { |
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const parentWrapper = mount(ParentComponent, { |
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global: { |
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stubs: { |
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ChildComponent: RegistrationNoticeMock |
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} |
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} |
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}) |
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expect(parentWrapper.findComponent(RegistrationNoticeMock).exists()).toBe(true) |
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}) |
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``` |
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|
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#### 7. State Change Testing |
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### **State Change Testing** |
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```typescript |
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const mockComponent = new RegistrationNoticeMock() |
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|
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// Initial state |
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mockComponent.isRegistered = false |
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mockComponent.show = true |
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expect(mockComponent.shouldShow).toBe(true) |
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|
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// State change |
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mockComponent.isRegistered = true |
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expect(mockComponent.shouldShow).toBe(false) |
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it('should update state when props change', async () => { |
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wrapper = mountComponent({ show: false }) |
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expect(wrapper.find('.notice').exists()).toBe(false) |
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await wrapper.setProps({ show: true }) |
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expect(wrapper.find('.notice').exists()).toBe(true) |
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}) |
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``` |
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|
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#### 8. Performance Testing |
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### **Performance Testing** |
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```typescript |
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const mockComponent = new RegistrationNoticeMock() |
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const startTime = performance.now() |
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|
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// Call methods rapidly |
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for (let i = 0; i < 1000; i++) { |
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mockComponent.shareInfo() |
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mockComponent.shouldShow |
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mockComponent.buttonText |
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} |
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const duration = performance.now() - startTime |
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expect(duration).toBeLessThan(100) // Should complete quickly |
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it('should render within acceptable time', () => { |
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const start = performance.now() |
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wrapper = mountComponent() |
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const end = performance.now() |
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expect(end - start).toBeLessThan(100) // 100ms threshold |
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}) |
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``` |
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|
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## Running Tests |
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|
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### Available Scripts |
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|
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### **Available Commands** |
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```bash |
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# Run all tests |
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npm run test |
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|
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# Run unit tests once |
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npm run test:unit |
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|
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# Run unit tests in watch mode |
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# Run tests in watch mode |
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npm run test:unit:watch |
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|
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# Run tests with coverage |
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npm run test:unit:coverage |
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|
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# Run specific test file |
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npm run test:unit src/test/RegistrationNotice.test.ts |
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``` |
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|
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### Test File Structure |
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### **Test Output** |
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- **Passing Tests**: Green checkmarks |
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- **Failing Tests**: Red X with detailed error messages |
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- **Coverage Report**: Percentage coverage for each file |
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- **Performance Metrics**: Test execution times |
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|
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## File Structure |
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|
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``` |
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src/test/ |
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├── __mocks__/ |
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│ └── RegistrationNotice.mock.ts # Component mock |
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├── setup.ts # Test environment setup |
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├── RegistrationNotice.test.ts # Component tests |
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└── README.md # This documentation |
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├── __mocks__/ # Mock component implementations |
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│ ├── RegistrationNotice.mock.ts |
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│ ├── LargeIdenticonModal.mock.ts |
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│ ├── ProjectIcon.mock.ts |
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│ └── ContactBulkActions.mock.ts |
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├── setup.ts # Global test configuration |
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├── README.md # This documentation |
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├── RegistrationNotice.test.ts # Component tests |
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├── LargeIdenticonModal.test.ts # Component tests |
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├── ProjectIcon.test.ts # Component tests |
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├── ContactBulkActions.test.ts # Component tests |
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└── PlatformServiceMixin.test.ts # Utility tests |
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``` |
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|
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## Testing Best Practices |
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|
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### 1. Component Testing |
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- Test component rendering with different prop combinations |
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- Verify event emissions |
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- Check accessibility attributes |
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- Test user interactions |
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|
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### 2. Mock Usage |
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- Use mocks for isolated unit testing |
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- Test component interfaces, not implementation details |
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- Create custom mocks for specific test scenarios |
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- Verify mock behavior matches real component |
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|
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### 3. Error Handling |
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- Test edge cases and error conditions |
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- Verify graceful degradation |
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- Test invalid prop combinations |
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|
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### 4. Performance Testing |
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- Test rapid method calls |
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- Verify efficient execution |
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- Monitor memory usage in long-running tests |
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|
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## Security Audit Checklist |
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|
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When creating mocks and tests, ensure: |
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|
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- [ ] No sensitive data in test files |
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- [ ] Proper input validation testing |
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- [ ] Event emission security |
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- [ ] No hardcoded credentials |
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- [ ] Proper error handling |
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- [ ] Access control verification |
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- [ ] Data sanitization testing |
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|
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## Examples |
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|
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See `src/test/RegistrationNotice.mock.example.ts` for comprehensive examples covering: |
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- Direct mock usage |
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- Vue Test Utils integration |
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- Event testing |
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- Custom mock behavior |
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- Integration testing |
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- Error handling |
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- Performance testing |
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## Best Practices |
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|
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### **Test Organization** |
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1. **Group related tests** using `describe` blocks |
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2. **Use descriptive test names** that explain the scenario |
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3. **Keep tests focused** on one specific behavior |
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4. **Use helper functions** for common setup |
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|
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### **Mock Design** |
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1. **Maintain interface compatibility** with original components |
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2. **Provide helper methods** for common test scenarios |
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3. **Include computed properties** for state validation |
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4. **Document mock behavior** clearly |
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|
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### **Coverage Goals** |
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1. **100% line coverage** for simple components |
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2. **100% branch coverage** for conditional logic |
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3. **100% function coverage** for all methods |
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4. **Edge case coverage** for error scenarios |
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|
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## Future Improvements |
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|
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### **Implemented Enhancements** |
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1. ✅ **Error handling** - Component error states and exception handling |
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2. ✅ **Performance testing** - Render time benchmarks and memory leak detection |
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3. ✅ **Integration testing** - Parent-child component interaction and dependency injection |
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4. ✅ **Snapshot testing** - DOM structure validation and CSS class regression detection |
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5. ✅ **Accessibility compliance** - ARIA attributes and semantic structure validation |
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|
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### **Future Enhancements** |
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1. **Visual regression testing** - Automated UI consistency checks |
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2. **Cross-browser compatibility** testing |
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3. **Service layer integration** testing |
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4. **End-to-end component** testing |
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5. **Advanced performance** profiling |
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|
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### **Coverage Expansion** |
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1. **Medium complexity components** (100-300 lines) |
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2. **Complex components** (300+ lines) |
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3. **Service layer testing** |
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4. **Utility function testing** |
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5. **API integration testing** |
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|
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## Troubleshooting |
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|
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### Common Issues |
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|
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1. **JSDOM Environment Issues** |
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- Ensure `vitest.config.ts` has `environment: 'jsdom'` |
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- Check `src/test/setup.ts` for proper global mocks |
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|
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2. **Vue-facing-decorator Issues** |
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- Ensure TypeScript configuration supports decorators |
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- Verify import paths are correct |
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|
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3. **Test Utils Issues** |
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- Check component mounting syntax |
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- Verify prop passing |
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- Ensure proper async/await usage |
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|
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### Debug Tips |
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|
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```bash |
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# Run tests with verbose output |
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npm run test:unit -- --reporter=verbose |
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|
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# Run specific test file |
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npm run test:unit src/test/RegistrationNotice.test.ts |
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|
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# Debug with console output |
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npm run test:unit -- --reporter=verbose --no-coverage |
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``` |
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|
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## Contributing |
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|
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When adding new mocks or tests: |
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### **Common Issues** |
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1. **Import errors**: Check path aliases in `vitest.config.ts` |
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2. **Mock not found**: Verify mock file exists and exports correctly |
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3. **Test failures**: Check for timing issues with async operations |
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4. **Coverage gaps**: Add tests for uncovered code paths |
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|
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1. Follow the existing patterns in `RegistrationNotice.mock.ts` |
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2. Add comprehensive documentation |
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3. Include usage examples |
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4. Update this README with new information |
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5. Add security audit checklist items |
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### **Debug Tips** |
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1. **Use `console.log`** in tests for debugging |
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2. **Check test output** for detailed error messages |
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3. **Verify component props** are being passed correctly |
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4. **Test one assertion at a time** to isolate issues |
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|
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## Author |
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--- |
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|
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Matthew Raymer |
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*Last updated: July 29, 2025* |
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*Test infrastructure established with 100% coverage for 5 simple components* |
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