MCP Workspace Server

/** * Unit tests for logging utility */ import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest'; import { Logger } from '../src/utils/logging.js'; describe('Logger', () => { let consoleErrorSpy: ReturnType<typeof vi.spyOn>; beforeEach(() => { consoleErrorSpy = vi.spyOn(console, 'error').mockImplementation(() => {}); }); afterEach(() => { consoleErrorSpy.mockRestore(); }); it('should log debug messages when level is debug', () => { const logger = new Logger('debug'); logger.debug('test message'); expect(consoleErrorSpy).toHaveBeenCalledTimes(1); const logEntry = JSON.parse(consoleErrorSpy.mock.calls[0][0] as string); expect(logEntry.level).toBe('DEBUG'); expect(logEntry.message).toBe('test message'); expect(logEntry.timestamp).toBeDefined(); }); it('should not log debug messages when level is info', () => { const logger = new Logger('info'); logger.debug('test message'); expect(consoleErrorSpy).not.toHaveBeenCalled(); }); it('should log info messages when level is info', () => { const logger = new Logger('info'); logger.info('test message'); expect(consoleErrorSpy).toHaveBeenCalledTimes(1); const logEntry = JSON.parse(consoleErrorSpy.mock.calls[0][0] as string); expect(logEntry.level).toBe('INFO'); expect(logEntry.message).toBe('test message'); }); it('should log warn messages when level is warn', () => { const logger = new Logger('warn'); logger.warn('test message'); expect(consoleErrorSpy).toHaveBeenCalledTimes(1); const logEntry = JSON.parse(consoleErrorSpy.mock.calls[0][0] as string); expect(logEntry.level).toBe('WARN'); expect(logEntry.message).toBe('test message'); }); it('should not log info messages when level is warn', () => { const logger = new Logger('warn'); logger.info('test message'); expect(consoleErrorSpy).not.toHaveBeenCalled(); }); it('should log error messages at any level', () => { const logger = new Logger('error'); logger.error('test message'); expect(consoleErrorSpy).toHaveBeenCalledTimes(1); const logEntry = JSON.parse(consoleErrorSpy.mock.calls[0][0] as string); expect(logEntry.level).toBe('ERROR'); expect(logEntry.message).toBe('test message'); }); it('should include metadata when provided', () => { const logger = new Logger('info'); const metadata = { userId: '123', action: 'test' }; logger.info('test message', metadata); expect(consoleErrorSpy).toHaveBeenCalledTimes(1); const logEntry = JSON.parse(consoleErrorSpy.mock.calls[0][0] as string); expect(logEntry.meta).toEqual(metadata); }); it('should respect log level hierarchy', () => { const logger = new Logger('warn'); logger.debug('debug message'); logger.info('info message'); logger.warn('warn message'); logger.error('error message'); expect(consoleErrorSpy).toHaveBeenCalledTimes(2); const firstLog = JSON.parse(consoleErrorSpy.mock.calls[0][0] as string); expect(firstLog.level).toBe('WARN'); const secondLog = JSON.parse(consoleErrorSpy.mock.calls[1][0] as string); expect(secondLog.level).toBe('ERROR'); }); });