Dart MCP Server

import { run } from '../../src/tools/run.js'; import { toAbsolutePath } from '../../src/utils/path-utils.js'; import { executeDartCommand } from '../../src/utils/dart-executor.js'; // Mock dependencies jest.mock('../../src/utils/path-utils.js', () => ({ toAbsolutePath: jest.fn() })); jest.mock('../../src/utils/dart-executor.js', () => ({ executeDartCommand: jest.fn() })); describe('run tool', () => { beforeEach(() => { // Reset mocks before each test jest.mocked(toAbsolutePath).mockReset(); jest.mocked(executeDartCommand).mockReset(); // Default mock implementations jest.mocked(toAbsolutePath).mockImplementation((path) => path ? `/resolved/${path}` : ''); jest.mocked(executeDartCommand).mockResolvedValue({ stdout: 'success', stderr: '' }); }); it('should handle required script parameter', async () => { const script = 'lib/main.dart'; const resolvedScript = '/resolved/lib/main.dart'; jest.mocked(toAbsolutePath).mockReturnValue(resolvedScript); await run({ script }); // Verify toAbsolutePath call (with any arguments) expect(toAbsolutePath).toHaveBeenCalled(); // Should execute command with the resolved script path expect(executeDartCommand).toHaveBeenCalledTimes(1); const callArgs = jest.mocked(executeDartCommand).mock.calls[0]; expect(callArgs[0]).toBe('run'); expect(callArgs[1]).toEqual([resolvedScript]); }); it('should pass through arguments array', async () => { const script = 'lib/main.dart'; const resolvedScript = '/resolved/lib/main.dart'; const args = ['--verbose', '--profile']; jest.mocked(toAbsolutePath).mockReturnValue(resolvedScript); await run({ script, args }); // Should execute command with script and args expect(executeDartCommand).toHaveBeenCalledTimes(1); const callArgs = jest.mocked(executeDartCommand).mock.calls[0]; expect(callArgs[0]).toBe('run'); expect(callArgs[1]).toEqual([resolvedScript, ...args]); }); it('should use resolved working directory when provided', async () => { const script = 'lib/main.dart'; const resolvedScript = '/resolved/lib/main.dart'; const workingDir = 'my_project'; const resolvedDir = '/resolved/my_project'; // Create a more specific mock implementation const mockToAbsolutePath = jest.mocked(toAbsolutePath); mockToAbsolutePath.mockImplementation((p) => { if (p === script) return resolvedScript; if (p === workingDir) return resolvedDir; return `/resolved/${p}`; }); await run({ script, workingDir }); // Verify the function was called expect(mockToAbsolutePath).toHaveBeenCalledWith(expect.any(String)); // Should execute command with the resolved directory expect(executeDartCommand).toHaveBeenCalledTimes(1); const callArgs = jest.mocked(executeDartCommand).mock.calls[0]; expect(callArgs[0]).toBe('run'); expect(callArgs[1]).toEqual([resolvedScript]); expect(callArgs[2]).toBe(resolvedDir); }); it('should combine all parameters correctly', async () => { const script = 'lib/main.dart'; const resolvedScript = '/resolved/lib/main.dart'; const args = ['--verbose']; const workingDir = 'my_project'; const resolvedDir = '/resolved/my_project'; // Create a more specific mock implementation const mockToAbsolutePath = jest.mocked(toAbsolutePath); mockToAbsolutePath.mockImplementation((p) => { if (p === script) return resolvedScript; if (p === workingDir) return resolvedDir; return `/resolved/${p}`; }); await run({ script, args, workingDir }); // Should execute command with all parameters expect(executeDartCommand).toHaveBeenCalledTimes(1); const callArgs = jest.mocked(executeDartCommand).mock.calls[0]; expect(callArgs[0]).toBe('run'); expect(callArgs[1]).toEqual([resolvedScript, ...args]); expect(callArgs[2]).toBe(resolvedDir); }); it('should return successful command results', async () => { const expectedOutput = 'Hello, World!'; jest.mocked(executeDartCommand).mockResolvedValue({ stdout: expectedOutput, stderr: '' }); const result = await run({ script: 'lib/main.dart' }); expect(result).toEqual({ content: [{ type: 'text', text: expectedOutput }], isError: false }); }); it('should return error command results', async () => { const expectedError = 'Error: Could not find file lib/main.dart'; jest.mocked(executeDartCommand).mockResolvedValue({ stdout: '', stderr: expectedError }); const result = await run({ script: 'lib/main.dart' }); expect(result).toEqual({ content: [{ type: 'text', text: expectedError }], isError: true }); }); });