Add LeadersList.test.tsx #1868
Add LeadersList.test.tsx #1868
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Summary by CodeRabbit
WalkthroughA new unit test suite for the Changes
Estimated code review effort🎯 2 (Simple) | ⏱️ ~8 minutes Possibly related PRs
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Actionable comments posted: 1
🧹 Nitpick comments (2)
frontend/__tests__/unit/components/LeadersList.test.tsx (2)
71-81: Consider documenting the type assertion rationale.The
as anytype assertions are necessary for testing invalid prop scenarios, but consider adding comments to clarify this is intentional for testing edge cases.- render(<LeadersList leaders={null as any} />) + render(<LeadersList leaders={null as any} />) // Testing invalid prop type
276-282: Consider improving the unique keys test.The comment mentions testing unique keys, but this is difficult to verify directly. Consider using React's development mode warnings or a more explicit test approach.
You could improve this test by checking for React warnings in development mode:
it('generates unique keys for each leader span', () => { const consoleSpy = jest.spyOn(console, 'error').mockImplementation() render(<LeadersList {...defaultProps} />) // React should not warn about duplicate keys expect(consoleSpy).not.toHaveBeenCalledWith( expect.stringContaining('Warning: Each child in a list should have a unique "key" prop') ) consoleSpy.mockRestore() })
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📒 Files selected for processing (1)
frontend/__tests__/unit/components/LeadersList.test.tsx(1 hunks)
🧰 Additional context used
🧠 Learnings (2)
📓 Common learnings
Learnt from: Rajgupta36
PR: OWASP/Nest#1717
File: frontend/__tests__/unit/pages/createProgram.test.tsx:70-86
Timestamp: 2025-07-12T17:36:57.255Z
Learning: When testing React page components that use mocked form components, validation logic should be tested at the form component level, not the page level. Page-level tests should focus on authentication, role checking, submission handling, and navigation logic.
frontend/__tests__/unit/components/LeadersList.test.tsx (2)
Learnt from: Rajgupta36
PR: #1717
File: frontend/tests/unit/pages/createProgram.test.tsx:70-86
Timestamp: 2025-07-12T17:36:57.255Z
Learning: When testing React page components that use mocked form components, validation logic should be tested at the form component level, not the page level. Page-level tests should focus on authentication, role checking, submission handling, and navigation logic.
Learnt from: ahmedxgouda
PR: #1703
File: frontend/src/components/BarChart.tsx:33-46
Timestamp: 2025-07-03T03:08:03.290Z
Learning: In the OWASP Nest project's BarChart component (frontend/src/components/BarChart.tsx), the days and requirements arrays are guaranteed to always have the same length in their use cases, so input validation for array length matching is not needed.
🔇 Additional comments (10)
frontend/__tests__/unit/components/LeadersList.test.tsx (10)
1-5: LGTM! Clean imports and proper setup.The imports follow good practices by using a custom test wrapper and including proper TypeScript types.
6-33: Excellent mock implementation for Next.js Link.The mock correctly transforms the Link component to an anchor tag while preserving all necessary props and accessibility attributes. The TypeScript types are comprehensive and the data-testid facilitates testing.
35-40: Simple and effective mock for TruncatedText.The mock maintains essential functionality while providing a test hook via data-testid.
42-62: Well-structured test setup and basic rendering tests.Good use of TypeScript for props, proper cleanup with afterEach, and comprehensive basic rendering coverage.
96-124: Comprehensive prop-based behavior testing.Excellent coverage of single/multiple leaders, whitespace handling, and special characters including Unicode. These tests ensure robust input processing.
126-146: Thorough text and content rendering validation.Good combination of element-specific queries and overall text content verification. The comma handling tests are essential for proper formatting.
148-176: Excellent DOM structure and URL encoding tests.The tests for CSS classes, href generation, and URL encoding are comprehensive. The special character encoding test is particularly valuable for ensuring proper URL formatting.
178-205: Comprehensive accessibility testing.Excellent coverage of aria-labels, title attributes, and focusability. This ensures the component meets accessibility standards.
214-244: Thorough edge case handling.The tests for consecutive commas, trailing/leading commas, long names, and numeric strings demonstrate excellent attention to real-world scenarios and potential failure points.
246-284: Comprehensive integration and fallback testing.The default values, fallbacks, and component integration tests provide excellent coverage of the component's behavior in various scenarios. The TruncatedText integration test is particularly well-implemented.
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Proposed change
Resolves #1839
This PR adds comprehensive unit tests for the React component to ensure robust testing coverage and reliability. The test suite covers all essential aspects of the component's functionality including rendering logic, prop handling, accessibility features, and edge case scenarios.
est Coverage:
Basic Rendering: Tests successful rendering with minimal required props
Conditional Logic: Validates "Unknown" fallback behavior for empty/invalid inputs
Prop Variations: Tests single vs multiple leaders, whitespace handling, special characters
Content Rendering: Verifies correct leader names display and comma separation
DOM Structure: Tests CSS classes, href generation, and URL encoding
Accessibility: Comprehensive testing of aria-labels, title attributes, and focusability
Edge Cases: Handles malformed input (consecutive commas, trailing/leading commas, very long names)
Fallbacks: Tests graceful handling of null, undefined, and invalid prop types
Component Integration: Validates integration with TruncatedText wrapper component
Checklist
make check-testlocally; all checks and tests passed.