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Integration Testing

Overview​

Integration testing in the Hosanna UI project ensures that different modules and services work together correctly. These tests verify the interaction between various parts of the application, including services, utilities, and external dependencies.

Test Environment Setup​

Vitest Configuration​

The project uses Vitest as the testing framework, which is optimized for Vite projects. The configuration is integrated with your Vite setup.

Test Environment Setup​

The test environment is configured to:

  • Handle TypeScript files
  • Support module mocking
  • Provide browser-like globals when needed

Writing Integration Tests​

Naming Convention​

Integration tests should follow these naming conventions:

  • Files: *.integration.test.ts
  • Test suites: Describe the feature or module group being tested
  • Test cases: Clearly state the expected behavior

Best Practices​

  1. Module Integration

    • Test service interactions
    • Verify utility function integrations
    • Check module dependencies

  2. Service Integration

    • Test API service interactions
    • Verify data transformations
    • Test error handling and edge cases

  3. State Management

    • Test state updates across modules
    • Verify data flow
    • Test complex operations

Example Integration Test Structure​

import { describe, it, expect, beforeEach, vi } from 'vitest';
import { YourService } from './YourService';

describe('YourService Integration', () => {
  let service: YourService;

  beforeEach(() => {
    service = new YourService();
  });

  it('should interact correctly with other services', async () => {
    // Arrange
    const input = { /* test data */ };

    // Act
    const result = await service.processData(input);

    // Assert
    expect(result).toEqual(/* expected output */);
  });
});

Running Tests​

To run integration tests:

# Run all tests
npm test

# Run tests in watch mode
npm run test:watch

# Run tests with coverage
npm run test:coverage

Continuous Integration​

Integration tests are part of the CI pipeline and run automatically on:

  • Pull request creation
  • Merges to main branch
  • Release preparation

Best Practices and Guidelines​

  1. Isolation: Ensure tests are independent and don't affect each other
  2. Mocking: Use Vitest's mocking capabilities (vi.mock(), vi.spyOn()) for external dependencies
  3. Coverage: Aim for comprehensive coverage of integration points
  4. Maintenance: Keep tests up to date with module changes
  5. Performance: Optimize test execution time while maintaining thoroughness

Common Testing Scenarios​

Based on the existing tests in the codebase:

  1. URL Transfer Operations

    • Test HTTP requests and responses
    • Verify header and cookie management
    • Test authentication flows

  2. File System Operations

    • Test file reading/writing
    • Verify directory operations
    • Test file manipulation functions

  3. Cryptography and Security

    • Test encryption/decryption operations
    • Verify digest calculations
    • Test security-related utilities

  4. Async Operations

    • Test async manager functionality
    • Verify event handling
    • Test command processing

Troubleshooting​

Common issues and solutions when writing or running integration tests:

  1. Test Environment Issues

    • Check Vitest configuration
    • Verify module mocking setup
    • Ensure correct TypeScript configuration

  2. Async Testing

    • Use proper async/await syntax
    • Handle promises correctly
    • Use Vitest's async utilities

  3. Mocking Issues

    • Properly setup vi.mock()
    • Use correct mock implementations
    • Reset mocks between tests