Deep Code Reasoning MCP Server

import { describe, it, expect, jest } from '@jest/globals'; import { SessionError, ApiError, FileSystemError, RateLimitError, ConversationLockedError, SessionNotFoundError, } from '../errors/index.js'; import { ErrorClassifier } from '../utils/ErrorClassifier.js'; describe('Custom Error Classes', () => { describe('SessionError', () => { it('should create a session error with proper properties', () => { const error = new SessionError('Test message', 'TEST_CODE', 'session-123'); expect(error).toBeInstanceOf(Error); expect(error).toBeInstanceOf(SessionError); expect(error.name).toBe('SessionError'); expect(error.message).toBe('Test message'); expect(error.code).toBe('TEST_CODE'); expect(error.sessionId).toBe('session-123'); }); }); describe('ApiError', () => { it('should create an API error with proper properties', () => { const error = new ApiError('API failed', 'API_ERROR', 'gemini', 500); expect(error).toBeInstanceOf(Error); expect(error).toBeInstanceOf(ApiError); expect(error.name).toBe('ApiError'); expect(error.message).toBe('API failed'); expect(error.code).toBe('API_ERROR'); expect(error.service).toBe('gemini'); expect(error.statusCode).toBe(500); }); }); describe('FileSystemError', () => { it('should create a filesystem error with proper properties', () => { const error = new FileSystemError('File not found', 'ENOENT', '/path/to/file', 'read'); expect(error).toBeInstanceOf(Error); expect(error).toBeInstanceOf(FileSystemError); expect(error.name).toBe('FileSystemError'); expect(error.message).toBe('File not found'); expect(error.code).toBe('ENOENT'); expect(error.path).toBe('/path/to/file'); expect(error.operation).toBe('read'); }); }); describe('RateLimitError', () => { it('should create a rate limit error with proper properties', () => { const error = new RateLimitError('Rate limit exceeded', 'gemini', 60); expect(error).toBeInstanceOf(Error); expect(error).toBeInstanceOf(ApiError); expect(error).toBeInstanceOf(RateLimitError); expect(error.name).toBe('RateLimitError'); expect(error.message).toBe('Rate limit exceeded'); expect(error.code).toBe('RATE_LIMIT_ERROR'); expect(error.service).toBe('gemini'); expect(error.statusCode).toBe(429); expect(error.retryAfter).toBe(60); }); }); describe('ConversationLockedError', () => { it('should create a conversation locked error', () => { const error = new ConversationLockedError('session-123'); expect(error).toBeInstanceOf(SessionError); expect(error.name).toBe('ConversationLockedError'); expect(error.message).toBe('Session session-123 is currently processing another request'); expect(error.code).toBe('SESSION_LOCKED'); expect(error.sessionId).toBe('session-123'); }); }); describe('SessionNotFoundError', () => { it('should create a session not found error', () => { const error = new SessionNotFoundError('session-456'); expect(error).toBeInstanceOf(SessionError); expect(error.name).toBe('SessionNotFoundError'); expect(error.message).toBe('Session session-456 not found or expired'); expect(error.code).toBe('SESSION_NOT_FOUND'); expect(error.sessionId).toBe('session-456'); }); }); }); describe('ErrorClassifier with Custom Errors', () => { it('should classify SessionError correctly', () => { const error = new SessionError('Test', 'SESSION_ERROR', 'session-123'); const classification = ErrorClassifier.classify(error); expect(classification.category).toBe('session'); expect(classification.code).toBe('SESSION_ERROR'); expect(classification.isRetryable).toBe(false); }); it('should classify ConversationLockedError as retryable', () => { const error = new ConversationLockedError('session-123'); const classification = ErrorClassifier.classify(error); expect(classification.category).toBe('session'); expect(classification.code).toBe('SESSION_LOCKED'); expect(classification.isRetryable).toBe(true); }); it('should classify RateLimitError correctly', () => { const error = new RateLimitError('Rate limited', 'gemini'); const classification = ErrorClassifier.classify(error); expect(classification.category).toBe('api'); expect(classification.code).toBe('RATE_LIMIT_ERROR'); expect(classification.isRetryable).toBe(true); }); it('should classify FileSystemError correctly', () => { const error = new FileSystemError('File error', 'ENOENT', '/path'); const classification = ErrorClassifier.classify(error); expect(classification.category).toBe('filesystem'); expect(classification.code).toBe('ENOENT'); expect(classification.isRetryable).toBe(false); }); it('should still handle native filesystem errors', () => { const error = new Error('ENOENT: no such file or directory'); (error as any).code = 'ENOENT'; const classification = ErrorClassifier.classify(error); expect(classification.category).toBe('filesystem'); expect(classification.code).toBe('ENOENT'); expect(classification.isRetryable).toBe(false); }); it('should handle GoogleGenerativeAIError for backward compatibility', () => { const error = new Error('GoogleGenerativeAIError: Invalid API key'); const classification = ErrorClassifier.classify(error); expect(classification.category).toBe('api'); expect(classification.code).toBe('API_AUTH_ERROR'); expect(classification.isRetryable).toBe(false); }); });