test: added test cases for utils.ts and videoRecordingService.ts

Issue Summary

Added unit test coverage for utils.ts and videoRecordingService.ts to improve reliability and ensure correct handling of utility logic and video recording workflows.

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Problem Statement

• utils.ts and videoRecordingService.ts lacked sufficient test coverage
• Risk of bugs in utility functions and video recording lifecycle
• Critical features like recording, permissions, and data handling were not fully validated

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Proposed Solution

• Added unit tests for:

  • utils.ts → validate helper functions and edge cases
  • videoRecordingService.ts → test video recording lifecycle, permissions, and error handling

• Covered success scenarios, edge cases, and failure conditions

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Test-Driven Development

Acceptance Criteria (Given-When-Then)

Scenario 1: Validate utility functions

Given valid input data
 When utility functions are executed
 Then correct output should be returned

Scenario 2: Handle video recording lifecycle

Given device supports video recording
 When recording is started and stopped
 Then video should be recorded successfully

Scenario 3: Handle recording errors

Given permissions are denied or device is unsupported
 When recording is initiated
 Then appropriate error should be handled

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Test Cases

Test ID	Test Description	Precondition	Test Steps	Expected Result	Priority
TC-001	Utility function output	Valid input	1. Call function 2. Check result	Correct output	High
TC-002	Utility edge cases	Edge input	1. Call function 2. Validate result	Handled correctly	High
TC-003	Start video recording	Permissions granted	1. Start recording 2. Stop recording	Video created	High
TC-004	Permission denied	No permission	1. Start recording	Error handled	High

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Unit Test Requirements

Components/Functions to Test:

Module/Component	Function/Hook	Test Cases to Cover
utils.ts	helper functions	TC-001, TC-002
videoRecordingService.ts	recording lifecycle functions	TC-003, TC-004

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Test Assertions Required:

• Executes correctly with valid inputs
• Handles edge cases
• Validates output correctness
• Handles errors properly

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Implementation Details

Files to Change

File Path	Action	Purpose
tests/src/lib/utils.test.ts	Create	Test utility functions
tests/src/lib/videoRecordingService.test.ts	Create	Test recording service

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Technical Considerations

• Mock browser APIs (camera/media devices)
• Handle async recording operations
• Ensure deterministic outputs for utility functions

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UI/UX Requirements

Not applicable

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Testing Strategy

Manual Testing

Test Environment:

• Browser: Chrome
• Viewport: Desktop
• User Role: Any

Manual Test Steps:

1. Test utility functions in app
2. Start/stop video recording
3. Verify permission handling

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Automated Testing

Unit Tests:

• Function logic tests
• Edge case handling
• Error handling tests

Integration Tests (if applicable):

• Not required

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Test Data Requirements

const mockTestData = {
  validInput: {},
  edgeCaseInput: {},
}

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Definition of Done

• Acceptance criteria met
• All test cases passing
• Unit tests written with good coverage
• Manual testing completed
• No console errors or warnings
• TypeScript types defined
• ESLint/Prettier checks pass

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Additional Context

Notes

• Improves reliability of shared utilities and video recording functionality
• Helps prevent regressions in core features
• Enhances overall test coverage

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