MCP Workspace Server

/** * Unit tests for configuration module */ import { describe, it, expect, beforeEach, afterEach } from 'vitest'; import { loadConfig, type ServerConfig } from '../src/config.js'; describe('Configuration Module', () => { let originalEnv: NodeJS.ProcessEnv; beforeEach(() => { // Save original environment originalEnv = { ...process.env }; }); afterEach(() => { // Restore original environment process.env = originalEnv; }); describe('loadConfig with default values', () => { it('should use current working directory as default workspace root', () => { delete process.env.MCP_WORKSPACE_ROOT; const config = loadConfig(); expect(config.workspaceRoot).toBe(process.cwd()); }); it('should use empty array as default allowed commands', () => { delete process.env.MCP_ALLOWED_COMMANDS; const config = loadConfig(); expect(config.allowedCommands).toEqual([]); }); it('should use false as default read-only mode', () => { delete process.env.MCP_READ_ONLY; const config = loadConfig(); expect(config.readOnly).toBe(false); }); it('should use info as default log level', () => { delete process.env.MCP_LOG_LEVEL; const config = loadConfig(); expect(config.logLevel).toBe('info'); }); it('should use 300000ms as default command timeout', () => { delete process.env.MCP_COMMAND_TIMEOUT; const config = loadConfig(); expect(config.commandTimeout).toBe(300000); }); }); describe('loadConfig with custom values', () => { it('should use custom workspace root when provided', () => { process.env.MCP_WORKSPACE_ROOT = '/custom/workspace'; const config = loadConfig(); expect(config.workspaceRoot).toBe('/custom/workspace'); }); it('should parse comma-separated command list', () => { process.env.MCP_ALLOWED_COMMANDS = 'npm install,npm test,npm run build'; const config = loadConfig(); expect(config.allowedCommands).toEqual(['npm install', 'npm test', 'npm run build']); }); it('should trim whitespace from commands', () => { process.env.MCP_ALLOWED_COMMANDS = ' npm install , npm test , npm run build '; const config = loadConfig(); expect(config.allowedCommands).toEqual(['npm install', 'npm test', 'npm run build']); }); it('should filter out empty commands', () => { process.env.MCP_ALLOWED_COMMANDS = 'npm install,,npm test, ,npm run build'; const config = loadConfig(); expect(config.allowedCommands).toEqual(['npm install', 'npm test', 'npm run build']); }); it('should parse read-only mode as true', () => { process.env.MCP_READ_ONLY = 'true'; const config = loadConfig(); expect(config.readOnly).toBe(true); }); it('should parse read-only mode with various true values', () => { const trueValues = ['true', 'TRUE', 'True', '1', 'yes', 'YES']; trueValues.forEach(value => { process.env.MCP_READ_ONLY = value; const config = loadConfig(); expect(config.readOnly).toBe(true); }); }); it('should parse read-only mode as false for non-true values', () => { const falseValues = ['false', 'FALSE', '0', 'no', 'NO', 'invalid']; falseValues.forEach(value => { process.env.MCP_READ_ONLY = value; const config = loadConfig(); expect(config.readOnly).toBe(false); }); }); it('should parse valid log levels', () => { const levels: Array<'debug' | 'info' | 'warn' | 'error'> = ['debug', 'info', 'warn', 'error']; levels.forEach(level => { process.env.MCP_LOG_LEVEL = level; const config = loadConfig(); expect(config.logLevel).toBe(level); }); }); it('should handle case-insensitive log levels', () => { process.env.MCP_LOG_LEVEL = 'DEBUG'; const config = loadConfig(); expect(config.logLevel).toBe('debug'); }); it('should use default log level for invalid values', () => { process.env.MCP_LOG_LEVEL = 'invalid'; const config = loadConfig(); expect(config.logLevel).toBe('info'); }); it('should parse custom command timeout', () => { process.env.MCP_COMMAND_TIMEOUT = '60000'; const config = loadConfig(); expect(config.commandTimeout).toBe(60000); }); it('should use default timeout for invalid numeric values', () => { process.env.MCP_COMMAND_TIMEOUT = 'invalid'; const config = loadConfig(); expect(config.commandTimeout).toBe(300000); }); it('should use default timeout for negative values', () => { process.env.MCP_COMMAND_TIMEOUT = '-1000'; const config = loadConfig(); expect(config.commandTimeout).toBe(300000); }); it('should use default timeout for zero', () => { process.env.MCP_COMMAND_TIMEOUT = '0'; const config = loadConfig(); expect(config.commandTimeout).toBe(300000); }); }); describe('loadConfig with combined environment variables', () => { it('should load all custom values together', () => { process.env.MCP_WORKSPACE_ROOT = '/my/workspace'; process.env.MCP_ALLOWED_COMMANDS = 'git status,npm test'; process.env.MCP_READ_ONLY = 'true'; process.env.MCP_LOG_LEVEL = 'debug'; process.env.MCP_COMMAND_TIMEOUT = '120000'; const config = loadConfig(); expect(config.workspaceRoot).toBe('/my/workspace'); expect(config.allowedCommands).toEqual(['git status', 'npm test']); expect(config.readOnly).toBe(true); expect(config.logLevel).toBe('debug'); expect(config.commandTimeout).toBe(120000); }); it('should handle empty string environment variables', () => { process.env.MCP_WORKSPACE_ROOT = ''; process.env.MCP_ALLOWED_COMMANDS = ''; process.env.MCP_READ_ONLY = ''; process.env.MCP_LOG_LEVEL = ''; process.env.MCP_COMMAND_TIMEOUT = ''; const config = loadConfig(); expect(config.workspaceRoot).toBe(process.cwd()); expect(config.allowedCommands).toEqual([]); expect(config.readOnly).toBe(false); expect(config.logLevel).toBe('info'); expect(config.commandTimeout).toBe(300000); }); }); });