test: Added comprehensive test coverage for Progress, NavigationMenu, Menubar (100%)
Overview
This Merge Request adds comprehensive unit test coverage for three shadcn/ui components: Progress, NavigationMenu, and Menubar. The objective of this MR is to improve component reliability and prevent regressions by achieving 100% test coverage without modifying any production source files.
A total of 122 unit tests were added covering component rendering, variant behavior, accessibility attributes, HTML attribute forwarding, styling validation, user interactions, and integration scenarios.
Type of Change
-
Bug Fix -
Feature Development -
Documentation -
Test Update -
Configuration Change
Testing
-
Tested on desktop -
Tested on mobile -
Tested in different browsers (N/A – unit tests)
Test Results
Progress Component:
✓ 20 tests passed
✓ Statements: 100%
✓ Branches: 100%
✓ Functions: 100%
✓ Lines: 100%
NavigationMenu Component:
✓ 51 tests passed
✓ Statements: 100%
✓ Branches: 100%
✓ Functions: 100%
✓ Lines: 100%
Menubar Component:
✓ 51 tests passed
✓ Statements: 100%
✓ Branches: 100%
✓ Functions: 100%
✓ Lines: 100%
Total:
✓ 122 tests passing
✓ 100% coverage for progress.tsx, navigation-menu.tsx, and menubar.tsx
Screenshot:
Changes Made
Progress Component Tests
File: tests/src/components/ui/progress.test.tsx
Tests Added: 20
Coverage: 100%
Test coverage includes:
✓ Default progress rendering
✓ Custom className merging
✓ Ref forwarding verification
✓ HTML attribute forwarding
✓ Indicator transform behavior for values (0,25,50,75,100)
✓ Undefined/null value handling
✓ Decimal precision handling
✓ ARIA attributes validation
✓ Multiple custom classes
✓ Additional props forwarding
NavigationMenu Component Tests
File: tests/src/components/ui/navigation-menu.test.tsx
Tests Added: 51
Coverage: 100%
Test coverage includes:
✓ navigationMenuTriggerStyle validation
✓ NavigationMenu rendering
✓ NavigationMenuList structure
✓ NavigationMenuTrigger behavior
✓ NavigationMenuContent animations
✓ NavigationMenuLink attributes
✓ NavigationMenuViewport rendering
✓ NavigationMenuIndicator structure
✓ Custom className merging
✓ HTML attribute forwarding
✓ Ref forwarding verification
✓ Click interactions
✓ Disabled state validation
✓ Responsive classes validation
✓ Integration testing
✓ Accessibility testing (ARIA roles)
✓ Keyboard navigation support
Menubar Component Tests
File: tests/src/components/ui/menubar.test.tsx
Tests Added: 51
Coverage: 100%
Test coverage includes:
✓ Menubar rendering validation
✓ Menu structure testing
✓ Trigger focus behavior
✓ Content alignment testing
✓ Item styling validation
✓ Separator rendering
✓ Label inset behavior
✓ Checkbox states testing
✓ Radio group selection testing
✓ Submenu hierarchy
✓ Shortcut styling
✓ Group wrapper validation
✓ Portal rendering
✓ Custom className merging
✓ HTML attribute forwarding
✓ Ref forwarding
✓ Click interactions
✓ Disabled states
✓ Integration testing
✓ Accessibility testing
✓ Keyboard navigation validation
Technical Details
Tech Stack:
- React 18 + TypeScript
- Vitest
- React Testing Library
- user-event
- Radix UI
- Lucide Icons
- Tailwind CSS
- class-variance-authority
Testing practices used:
✓ Component rendering validation
✓ DOM assertions
✓ Accessibility testing
✓ Ref forwarding validation
✓ Class merging validation
✓ Integration testing
✓ Edge case testing
✓ User interaction simulation
✓ State validation testing
Commands Used for Verification
Run coverage:
npm run test:coverage
Run tests UI:
npm run test:ui
Run lint:
npm run lint
Run type check:
npm run type-check
Run formatting check:
npm run format:check
Full CI verification:
npm run ci-local
Files Changed
tests/src/components/ui/progress.test.tsx → Added 20 tests
tests/src/components/ui/navigation-menu.test.tsx → Added 51 tests
tests/src/components/ui/menubar.test.tsx → Added 51 tests
No files inside src/components/ui were modified.
Checklist
-
Tests pass locally -
100% coverage achieved -
ESLint passes -
TypeScript checks pass -
Prettier formatting applied -
Build passes successfully -
No breaking changes introduced -
Accessibility scenarios tested -
No production code modified
Notes
• 122 tests added across 3 components
• 100% coverage achieved
• No source code modifications (only test files added)
• Tests follow project conventions
• Edge cases covered
• No skipped tests
• No fake assertions
• Improves maintainability
• Reduces regression risk
• Accessibility validation included
• User interaction testing implemented
Closes #270 (closed)