feat: add comprehensive unit tests for Card component #1856
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✅ Complete test coverage for all essential scenarios: - Renders with minimal required props - Conditional rendering (level, icons, project, social, contributors) - Prop-based behavior and styling variations - Event handling (button clicks with mock verification) - Edge cases (empty data, long text, missing props) - Accessibility attributes and ARIA roles - DOM structure and CSS class verification - Data flow and filtering logic
Summary by CodeRabbit
WalkthroughA new unit test suite for the Changes
Estimated code review effort🎯 2 (Simple) | ⏱️ ~8 minutes Possibly related issues
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Actionable comments posted: 0
🧹 Nitpick comments (1)
frontend/__tests__/unit/components/Card.test.tsx (1)
210-226: Consider consolidating duplicate project name tests.This test case duplicates functionality tested later in lines 248-271. Consider merging these related tests or ensuring they cover distinct scenarios.
- it('conditionally renders project name link when provided', () => { - const propsWithProject = { - ...baseProps, - projectName: 'Open Source Initiative', - projectLink: 'https://opensource.org', - } - - render(<Card {...propsWithProject} />) - const projectLink = screen.getByRole('link', { name: 'Open Source Initiative' }) - expect(projectLink).toHaveAttribute('href', 'https://opensource.org') - }) - - it('does not render project name when not provided', () => { - render(<Card {...baseProps} />) - const allLinks = screen.getAllByRole('link') - expect(allLinks).toHaveLength(1) - })This functionality is already tested in the "conditionally renders project name when provided" test at lines 248-271.
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frontend/__tests__/unit/components/Card.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.
Learnt from: ahmedxgouda
PR: OWASP/Nest#1714
File: frontend/src/components/ProjectTypeDashboardCard.tsx:8-12
Timestamp: 2025-07-08T17:07:50.988Z
Learning: In the OWASP/Nest project, union types for component props are not necessary when they would require creating separate type definitions. The project prefers inline prop type definitions even for props with specific string values, maintaining consistency with the single-use component prop pattern.
Learnt from: ahmedxgouda
PR: OWASP/Nest#1633
File: frontend/src/components/HealthMetrics.tsx:30-30
Timestamp: 2025-06-20T16:12:59.256Z
Learning: In the DetailsCard component (frontend/src/components/CardDetailsPage.tsx), there's a safety check that ensures HealthMetrics component is only rendered when healthMetricsData exists and has at least one element: `healthMetricsData && healthMetricsData.length > 0`. This makes accessing data[0] safe within the HealthMetrics component.
Learnt from: ahmedxgouda
PR: OWASP/Nest#1633
File: frontend/src/components/HealthMetrics.tsx:30-30
Timestamp: 2025-06-20T16:12:59.256Z
Learning: In the DetailsCard component (frontend/src/components/CardDetailsPage.tsx), there's a length check before rendering HealthMetrics: `healthMetricsData.length > 0`. This ensures that when HealthMetrics is rendered, the data array has at least one element, making accessing data[0] safe within the HealthMetrics component.
frontend/__tests__/unit/components/Card.test.tsx (5)
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: #1633
File: frontend/src/components/HealthMetrics.tsx:30-30
Timestamp: 2025-06-20T16:12:59.256Z
Learning: In the DetailsCard component (frontend/src/components/CardDetailsPage.tsx), there's a safety check that ensures HealthMetrics component is only rendered when healthMetricsData exists and has at least one element: healthMetricsData && healthMetricsData.length > 0. This makes accessing data[0] safe within the HealthMetrics component.
Learnt from: ahmedxgouda
PR: #1633
File: frontend/src/components/HealthMetrics.tsx:30-30
Timestamp: 2025-06-20T16:12:59.256Z
Learning: In the DetailsCard component (frontend/src/components/CardDetailsPage.tsx), there's a length check before rendering HealthMetrics: healthMetricsData.length > 0. This ensures that when HealthMetrics is rendered, the data array has at least one element, making accessing data[0] safe within the HealthMetrics component.
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.
Learnt from: Rajgupta36
PR: #1717
File: frontend/src/app/mentorship/programs/[programKey]/edit/page.tsx:90-128
Timestamp: 2025-07-12T17:14:28.536Z
Learning: Both ProgramForm (programCard.tsx) and ModuleForm (mainmoduleCard.tsx) components already implement HTML validation using the required attribute on form fields. The browser's native validation prevents form submission and displays error messages when required fields are empty, eliminating the need for additional JavaScript validation before GraphQL mutations.
🔇 Additional comments (5)
frontend/__tests__/unit/components/Card.test.tsx (5)
6-55: Well-structured TypeScript interfaces for mocks.The type definitions are comprehensive and appropriately capture the essential props needed for testing. Using
unknownfor icon types is a good practice when mocking external dependencies.
56-144: Comprehensive and well-implemented mocks.The mocking strategy effectively isolates the Card component while preserving essential behaviors. The use of
data-testidattributes and simplified implementations makes testing straightforward and reliable.
146-161: Excellent test setup following best practices.The base props provide comprehensive coverage of required properties, and the
beforeEachhook ensures clean test isolation. This setup enables consistent and reliable testing.
421-446: CSS class testing approach is reasonable but potentially brittle.Testing specific CSS classes can make tests fragile if styling changes. However, since these appear to be functional Tailwind classes affecting layout and responsiveness, the testing approach is justified for ensuring consistent styling behavior.
163-491: Comprehensive test coverage achieving stated objectives.The test suite excellently covers all major functionality including:
- Basic rendering and text content
- Conditional rendering of all optional elements
- Event handling and user interactions
- Accessibility compliance (ARIA roles, link attributes, heading hierarchy)
- Edge cases (empty data, missing props, long text)
- Integration scenarios with all props
This implementation successfully addresses the PR objectives of achieving >95% code coverage with thorough testing of the Card component.
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Than you!! |
2 participants
Add comprehensive unit tests for Card component
✅ Complete test coverage for all essential scenarios:
Proposed change
Resolves #[1803]
This PR adds comprehensive unit tests for the
CardReact component covering all essential test scenarios as specified in the issue requirements. The implementation includes 25+ test cases that achieve 95%+ code coverage and follow the established patterns fromAutoScrollToTop.test.tsx.Key Features:
Test Statistics:
Checklist
make check-testlocally; all checks and tests passed.