meld/tests/utils/examples/RunDirectiveCommandMock.test.ts

Meld: A template language for LLM prompts

/**
 * Example of using the command mocking utilities with RunDirectiveHandler tests
 */
import { describe, it, expect, vi, beforeEach } from 'vitest';
import { RunDirectiveHandler } from '@services/pipeline/DirectiveService/handlers/execution/RunDirectiveHandler.js';
import { setupCommandMocking } from '../fs/commandMockingHelper.js';
import { IValidationService } from '@services/resolution/ValidationService/IValidationService.js';
import { IStateService } from '@services/state/StateService/IStateService.js';
import { IResolutionService } from '@services/resolution/ResolutionService/IResolutionService.js';
import { IFileSystemService } from '@services/fs/FileSystemService/IFileSystemService.js';
import { DirectiveErrorCode } from '@services/pipeline/DirectiveService/errors/DirectiveError.js';

describe('RunDirectiveHandler with Command Mocking', () => {
  // Mock services
  let validationService: IValidationService;
  let stateService: IStateService;
  let resolutionService: IResolutionService;
  let fileSystemService: IFileSystemService;
  
  // Subject under test
  let handler: RunDirectiveHandler;
  
  // Command mocking utilities
  let mockCommand: (command: string, response: any) => void;
  
  beforeEach(() => {
    // This setup is just to make TypeScript happy
    // In real tests, these would be proper mocks
    validationService = {} as IValidationService;
    stateService = {} as IStateService;
    resolutionService = {} as IResolutionService;
    fileSystemService = {} as IFileSystemService;
    handler = {} as RunDirectiveHandler;
    mockCommand = () => {};
  });
  
  // Skip the tests in this example file to avoid failures in CI
  it.skip('should execute commands and store output in state variables', async () => {
    /* 
     * This is an example test showing how to use the command mocking system.
     * In a real test, you would:
     * 
     * 1. Create proper mocks for all services
     * 2. Create a CommandMockableFileSystem and inject it
     * 3. Create mock command responses
     * 4. Run your component under test
     * 5. Verify the results
     */
    
    // Create a run directive node
    const node = {
      type: 'Directive',
      directive: {
        kind: 'run',
        command: 'echo Hello World'
      }
    };
    
    // Example of setting up a mock command (not actually used in this skipped test)
    // const { mockCommand } = setupCommandMocking();
    // mockCommand('echo Hello World', { stdout: 'Hello World', stderr: '', exitCode: 0 });
    
    // In a real test, you would then execute the handler and verify results
    expect(true).toBe(true); // Placeholder assertion
  });
  
  it.skip('should handle command execution failures', async () => {
    // This is an example - see notes in the first test
    expect(true).toBe(true);
  });
  
  it.skip('should support custom output variables', async () => {
    // This is an example - see notes in the first test
    expect(true).toBe(true);
  });
});