sql-talk/tests/unit/config.test.ts

SQL Talk - 自然言語をSQLに変換するMCPサーバー（安全性保護・SSHトンネル対応） / SQL Talk - MCP Server for Natural Language to SQL conversion with safety guards and SSH tunnel support

import { describe, it, expect, beforeEach } from 'vitest';
import { ConfigManager } from '@/core/config.js';

describe('ConfigManager', () => {
  let configManager: ConfigManager;

  beforeEach(() => {
    configManager = ConfigManager.getInstance();
  });

  it('should be a singleton', () => {
    const instance1 = ConfigManager.getInstance();
    const instance2 = ConfigManager.getInstance();
    expect(instance1).toBe(instance2);
  });

  it('should validate connection requirements', () => {
    // This is a basic structure test
    expect(configManager.validateConnection).toBeDefined();
    expect(typeof configManager.validateConnection).toBe('function');
  });

  it('should process environment variables in config', () => {
    const mockConfig = {
      test: '${TEST_VAR}',
      nested: {
        value: '${NESTED_VAR}'
      }
    };
    
    process.env.TEST_VAR = 'test_value';
    process.env.NESTED_VAR = 'nested_value';
    
    const processed = (configManager as any).processEnvironmentVariables(mockConfig);
    
    expect(processed.test).toBe('test_value');
    expect(processed.nested.value).toBe('nested_value');
    
    delete process.env.TEST_VAR;
    delete process.env.NESTED_VAR;
  });
});