/**
 * browserbase-mcp-wrapper.js validateEnv() 单元测试
 * 测试环境变量缺失时的快速失败行为
 */
const { execFileSync } = require('child_process');
const path = require('path');

const WRAPPER = path.join(__dirname, '..', 'scripts', 'browserbase-mcp-wrapper.js');

function runWrapper(envOverrides = {}) {
  // 构造干净环境：只保留 PATH + 显式覆盖
  const env = {
    PATH: process.env.PATH || process.env.Path || '',
    SystemRoot: process.env.SystemRoot || '',
    ...envOverrides
  };
  try {
    const out = execFileSync('node', [WRAPPER], {
      env,
      timeout: 5000,
      encoding: 'utf-8',
      stdio: ['pipe', 'pipe', 'pipe']
    });
    return { code: 0, stdout: out, stderr: '' };
  } catch (err) {
    return {
      code: err.status,
      stdout: err.stdout || '',
      stderr: err.stderr || ''
    };
  }
}

describe('browserbase-mcp-wrapper validateEnv', () => {
  test('缺少两个密钥时应 exit(1) 并输出明确错误', () => {
    const result = runWrapper({});
    expect(result.code).toBe(1);
    expect(result.stderr).toContain('BROWSERBASE_API_KEY');
    expect(result.stderr).toContain('BROWSERBASE_PROJECT_ID');
    expect(result.stderr).toContain('FATAL');
  });

  test('只缺少 API_KEY 时应报错并列出缺失变量', () => {
    const result = runWrapper({ BROWSERBASE_PROJECT_ID: 'FAKE_PROJECT_FOR_UNIT_TEST' });
    expect(result.code).toBe(1);
    expect(result.stderr).toContain('BROWSERBASE_API_KEY');
    expect(result.stderr).not.toContain('BROWSERBASE_PROJECT_ID');
  });

  test('只缺少 PROJECT_ID 时应报错并列出缺失变量', () => {
    const result = runWrapper({ BROWSERBASE_API_KEY: 'FAKE_KEY_FOR_UNIT_TEST' });
    expect(result.code).toBe(1);
    expect(result.stderr).toContain('BROWSERBASE_PROJECT_ID');
    expect(result.stderr).not.toContain('BROWSERBASE_API_KEY');
  });

  test('两个密钥都存在时不应因 validateEnv 退出', () => {
    // 注意: 会因为后续逻辑（代理检查/找不到 MCP bin）退出，
    // 但 stderr 不应包含 validateEnv 的 FATAL 信息
    const result = runWrapper({
      BROWSERBASE_API_KEY: 'FAKE_KEY_FOR_UNIT_TEST',
      BROWSERBASE_PROJECT_ID: 'FAKE_PROJECT_FOR_UNIT_TEST'
    });
    expect(result.stderr).not.toContain('FATAL');
    expect(result.stderr).not.toContain('缺少必需环境变量');
  });
});