🟠 MEDIUM: Increase overall test coverage to 80%+ and improve test utilities

[isaaceliape]

Story Points

4

User Story

As a developer,
I want to increase overall test coverage to 80%+ and improve test utilities,
So that I can ensure the entire codebase is well-tested and maintainable.

Description

Complete Phase 3 by conducting a comprehensive coverage analysis across all components and utilities, adding targeted tests for uncovered code paths, creating reusable test utilities, and establishing testing best practices documentation.

Acceptance Criteria

• Overall test coverage >= 80%
• All components have coverage metrics
• Test utility helpers created
• Common test patterns documented
• Edge cases covered across codebase
• Integration tests added
• Coverage reports generated
• All tests passing and optimized

Implementation Plan

Step 1: Coverage Analysis (Days 1-2)

• Run full coverage report
• Analyze each component coverage
• Identify gaps in coverage
• Map uncovered code paths
• Create coverage improvement plan

Step 2: Create Test Utilities (Days 2-3)

• Create mount helpers
• Create store mocking utilities
• Create fixture generators
• Create assertion helpers
• Document utility usage

Step 3: Fill Coverage Gaps (Days 3-5)

• Helpers.ts: Add tests for utilities
• API.ts: Add integration tests
• App.vue: Add component tests
• Store/app.ts: Add store tests
• Edge cases: Add boundary tests
• Error handling: Add error tests
• Performance: Add performance tests

Step 4: Integration Testing (Days 5-6)

• Component interaction tests
• Store + component integration
• Multiple component flows
• Event propagation tests
• State synchronization tests

Step 5: Documentation & Reporting (Days 6-7)

• Create testing guidelines document
• Document test patterns
• Create testing best practices
• Generate coverage reports
• Create coverage dashboard
• Document test maintenance

Step 6: Final Optimization (Day 7)

• Optimize test performance
• Parallelize slow tests
• Remove test flakiness
• Final coverage verification
• Complete Phase 3 documentation

Implementation Notes

• Coverage targets by component:

  • TextRenderer.vue: 80%+ (highest complexity)
  • Menu.vue: 75%+
  • Letter.vue: 75%+
  • InfoPanel.vue: 75%+
  • Keymap.vue: 70%+
  • BurgerMenu.vue: 70%+
  • ToggleButton.vue: 70%+
  • Helpers.ts: 80%+
  • API.ts: 75%+

• Test utilities to create:

  • createTestStore() - Pinia store factory
  • createWrapper() - Mount helper
  • createFixture() - Data factory
  • findByTestId() - Query helper
  • triggerEvent() - Event helper
  • expectCall() - Spy assertion

• Testing best practices:

  • Follow AAA pattern (Arrange, Act, Assert)
  • Use descriptive test names
  • Create reusable fixtures
  • Mock external dependencies
  • Test behavior not implementation
  • Keep tests focused and small
  • Maintain test independence

Definition of Done

• 80%+ overall coverage
• All components tested
• Utilities created
• Integration tests complete
• Documentation written
• Performance optimized
• Phase 3 complete

Related Issues

• Phase 3 complete: 🟠 MEDIUM: Add comprehensive tests for TextRenderer component (80%+ coverage) #42-🟠 MEDIUM: Add comprehensive tests for ToggleButton component #48 component tests
• Epic: 🔵 EPIC: Typee Application Progress Monitoring & Continuous Improvement #27 - Typee Application Progress Monitoring