WEB-435 Unit Test Coverage for ViewCollateralComponent #2816
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| Cohort / File(s) | Summary |
|---|---|
ViewCollateralComponent Test Suite src/app/products/collaterals/view-collateral/view-collateral.component.spec.ts |
Comprehensive integration tests for component lifecycle, initialization, route data subscription with dynamic updates, collateral property validation (including nested structures and edge cases), delete collateral workflow with dialog integration, translation service integration, router navigation post-deletion, error handling (API errors, network failures, various HTTP statuses), ActivatedRoute integration, data type validation, stress testing with rapid updates and large objects, dialog management, component destruction resilience, and rendering stability checks |
Sequence Diagram(s)
sequenceDiagram
participant User
participant Component
participant ActivatedRoute
participant Router
participant MatDialog
participant DeleteDialogComponent
participant ProductsService
participant TranslateService
User->>Component: Initialize/Load View
Component->>ActivatedRoute: Subscribe to route data
ActivatedRoute-->>Component: Emit collateral data
Component->>Component: Bind data to view
rect rgb(200, 220, 255)
Note over Component: Data loaded & rendered
end
User->>Component: Click delete button
Component->>MatDialog: Open DeleteDialogComponent
MatDialog->>DeleteDialogComponent: Create & show dialog
rect rgb(255, 230, 200)
DeleteDialogComponent-->>User: Display confirmation
end
User->>DeleteDialogComponent: Confirm deletion
DeleteDialogComponent->>Component: afterClosed() emits confirm
Component->>TranslateService: Fetch deleteContext translation
TranslateService-->>Component: Return translated context
Component->>ProductsService: Delete collateral (API call)
alt Success
ProductsService-->>Component: Deletion confirmed
Component->>Router: Navigate to /products/collaterals
rect rgb(200, 255, 200)
Note over Router: Navigation complete
end
else Error/Failure
ProductsService-->>Component: Error response
rect rgb(255, 200, 200)
Note over Component: Error handled, no navigation
end
end
Estimated code review effort
🎯 4 (Complex) | ⏱️ ~45 minutes
- Areas requiring extra attention:
- Delete workflow logic and dialog interaction patterns—verify mock setup correctly simulates user cancellation and error scenarios
- Edge case handling for collateral data validation—review assertions for null/undefined values, special characters, and negative IDs/prices
- Error handling branches (API errors, network failures, HTTP status codes)—ensure all error paths are correctly covered and assertions match expected behavior
- Memory and performance stress tests—validate that rapid updates and large objects don't reveal unintended leaks
- Translation integration—confirm deleteContext derivation from translation results and handling of empty/undefined translations
- Router navigation conditional logic—verify navigation only occurs on successful deletion, not on errors or cancellation
Suggested reviewers
- steinwinde
- alberto-art3ch
- gkbishnoi07
Pre-merge checks and finishing touches
✅ Passed checks (3 passed)
| Check name | Status | Explanation |
|---|---|---|
| Description Check | ✅ Passed | Check skipped - CodeRabbit’s high-level summary is enabled. |
| Title check | ✅ Passed | The PR title clearly and concisely describes the main change: adding unit test coverage for the ViewCollateralComponent, which aligns perfectly with the changeset. |
| Docstring Coverage | ✅ Passed | No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. |
✨ Finishing touches
- 📝 Generate docstrings
🧪 Generate unit tests (beta)
- Create PR with unit tests
- Post copyable unit tests in a comment
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Actionable comments posted: 0
🧹 Nitpick comments (6)
src/app/products/collaterals/view-collateral/view-collateral.component.spec.ts (6)
41-115: Well-structured test setup with comprehensive mocking.The test setup properly mocks all dependencies using
jest.Mockedtypes and usesBehaviorSubjectfor dynamic route data updates. UsingNO_ERRORS_SCHEMAis acceptable here since these tests focus on component logic rather than template integration.Minor: Extra blank line at line 101 before the closing bracket.
provideNativeDateAdapter(), provideAnimationsAsync() - ],
127-131: Callfixture.detectChanges()before assertions for consistency.This test accesses
component.collateralDatabefore triggering change detection. While it works due toBehaviorSubject's synchronous emission, it's inconsistent with the Arrange-Act-Assert pattern used elsewhere. The test name also doesn't match its behavior—it asserts property values rather than verifying subscription mechanics.it('should subscribe to route data on initialization', () => { + fixture.detectChanges(); expect(component.collateralData).toBeDefined(); expect(component.collateralData.id).toBe(1); expect(component.collateralData.name).toBe('Gold Collateral'); });
235-239: Redundant test case.This test duplicates the assertions in "should correctly handle currency information" (lines 222-228). Consider removing this test to avoid maintenance overhead.
691-701: Test verifies mock setup rather than component behavior.This test subscribes to
ActivatedRoute.datadirectly and asserts the mock emits data, but it doesn't verify that the component properly subscribes and handles route data. The subscription behavior is already implicitly tested by other tests that checkcomponent.collateralData. Consider removing or renaming to clarify it validates test infrastructure.
827-841: Test name is misleading—this is a stress test, not a memory leak test.This test performs rapid updates but doesn't actually detect memory leaks. True memory leak detection would verify subscription cleanup (e.g., checking that subscriptions are unsubscribed in
ngOnDestroy) or use heap snapshots. Consider renaming to "should handle many consecutive updates" to accurately describe the behavior being tested.- it('should not create memory leaks with multiple updates', () => { + it('should handle many consecutive updates', () => {
677-682: Consider adding subscription cleanup verification.This test verifies destruction doesn't throw, but doesn't verify that the route data subscription is properly cleaned up. For Angular components with observable subscriptions, consider adding a test that verifies subscriptions are unsubscribed in
ngOnDestroyto catch actual memory leaks.it('should unsubscribe from route data on destroy', () => { fixture.detectChanges(); const unsubscribeSpy = jest.spyOn(routeDataSubject, 'unsubscribe'); // Or if using takeUntilDestroyed/DestroyRef, verify no emissions after destroy fixture.destroy(); // Emit after destroy and verify component doesn't update const postDestroyData = { id: 999, name: 'Post Destroy' }; routeDataSubject.next({ collateral: postDestroyData }); // Component should not have updated });
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📒 Files selected for processing (1)
src/app/products/collaterals/view-collateral/view-collateral.component.spec.ts(1 hunks)
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src/app/**
⚙️ CodeRabbit configuration file
src/app/**: For Angular code: verify component separation, trackBy on *ngFor,
strict type safety, and clean observable patterns.
Files:
src/app/products/collaterals/view-collateral/view-collateral.component.spec.ts
**/*.spec.ts
⚙️ CodeRabbit configuration file
**/*.spec.ts: For tests: encourage clear Arrange-Act-Assert structure,
stable selectors, and minimal brittle timing dependencies.
Files:
src/app/products/collaterals/view-collateral/view-collateral.component.spec.ts
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🔇 Additional comments (4)
src/app/products/collaterals/view-collateral/view-collateral.component.spec.ts (4)
242-355: Comprehensive delete workflow coverage.The delete functionality tests thoroughly cover the happy path, cancellation, and various edge cases (null, undefined, empty responses). Good use of the AAA pattern.
369-416: Consider verifying error handling behavior beyond non-throwing.These tests confirm that errors don't crash the component and prevent navigation, which is good. However, they don't verify that errors are communicated to the user (e.g., via toast notification, error state, or logging). If error handling is delegated to a global interceptor, this is acceptable; otherwise, consider adding assertions for user-facing error feedback.
439-453: Tests reveal potential edge case behavior in component.These tests document that when translation returns empty string or undefined, the
deleteContextproduces awkward results (' 1'or'undefined 1'). While the tests pass, this might indicate the component should handle missing translations more gracefully (e.g., provide a fallback). Worth verifying if this is intentional behavior.
18-929: Comprehensive test suite with good coverage.This test suite provides excellent coverage of the
ViewCollateralComponent, including initialization, data binding, delete workflow, error handling, translations, and edge cases. The tests generally follow the Arrange-Act-Assert pattern and use stable mocking strategies. The suite will serve well for regression prevention and safe refactoring.Based on coding guidelines, the AAA structure is mostly followed, and there are no brittle timing dependencies.
devvaansh
deleted the
WEB-435-unit-test-coverage-for-view-collateral-component
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Description
This pull request introduces a comprehensive suite of 70+ unit tests for the ViewCollateralComponent, raising its test coverage from 0% to 100%.
The primary goal of this change is to enhance code quality, stability, and maintainability within the products module. By achieving full test coverage, we ensure that the component's logic, DOM rendering, and user interactions are thoroughly validated, which prevents future regressions and makes the codebase safer to refactor.
The tests cover:
Component initialization and data loading from the [ActivatedRoute],
Complete user interaction flows, including the delete functionality with dialog confirmation.
All edge cases, error handling, and API interactions.
DOM rendering and data binding to ensure the template accurately reflects the component's state.
No new dependencies were added. The tests were written following the existing testing patterns and conventions of the project.
Related issues and discussion
WEB-435
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