测试团队每年省下300万电费？绿色软件工程让CI/CD碳排放直降67%_千锋教育

# 传统Selenium测试，每个用例都启动新浏览器实例
from selenium import webdriver

def test_login():
    driver = webdriver.Chrome()
    driver.get("https://example.com/login")
    # 测试逻辑
    driver.quit()

def test_logout():
    driver = webdriver.Chrome()  # 再次启动新实例
    driver.get("https://example.com/logout")
    # 测试逻辑
    driver.quit()

# 绿色优化：复用浏览器实例
from selenium import webdriver

class GreenTestSuite:
    def setup_class(self):
        self.driver = webdriver.Chrome()
        self.driver.set_page_load_timeout(10)  # 限制页面加载时间
    
    def test_login(self):
        self.driver.get("https://example.com/login")
        # 测试逻辑
    
    def test_logout(self):
        self.driver.get("https://example.com/logout")  # 复用同一个实例
        # 测试逻辑
    
    def teardown_class(self):
        self.driver.quit()

<!-- 传统JMeter：固定500线程 -->
<ThreadGroup guiclass="ThreadGroupGui" testclass="ThreadGroup">
    <intProp name="ThreadGroup.num_threads">500</intProp>
    <intProp name="ThreadGroup.ramp_time">60</intProp>
</ThreadGroup>

<!-- 绿色JMeter：动态线程池，根据CPU使用率自动调整 -->
<GreenThreadGroup guiclass="GreenThreadGroupGui" testclass="GreenThreadGroup">
    <intProp name="GreenThreadGroup.max_threads">500</intProp>
    <intProp name="GreenThreadGroup.min_threads">50</intProp>
    <intProp name="GreenThreadGroup.cpu_threshold">70</intProp>
</GreenThreadGroup>

# 传统方式：全量回归
mvn test

# 绿色方式：只测试变更模块
mvn test -pl $(git diff --name-only HEAD~1 | grep "src/test" | sed 's/\/.*//' | tr '\n' ',')

碳排放量 = (执行时间 * CPU功耗) + (内存占用 * 内存功耗) + (网络I/O * 网络功耗)

# docker-compose绿色配置
version: '3.8'
services:
  test-db:
    image: postgres:13
    deploy:
      resources:
        limits:
          cpus: '0.5'  # 限制CPU使用
          memory: 512M  # 限制内存
    # 休眠策略
    healthcheck:
      test: ["CMD", "pg_isready"]
      interval: 30s
      timeout: 10s
      retries: 3
    auto_sleep:
      enabled: true
      idle_timeout: 3600  # 1小时无请求自动休眠

年度节省 = (传统测试碳排放 - 绿色测试碳排放) * 碳交易价格 + 直接电费节省

# 高碳版本：100次独立API调用
for i in range(100):
    response = requests.get(f"https://api.example.com/user/{i}")
    assert response.status_code == 200

# 低碳版本：1次批量API调用
response = requests.post("https://api.example.com/users/batch", json={"ids": list(range(100))})
assert response.status_code == 200

# 绿色CI/CD流水线配置
jobs:
  green-test:
    runs-on: ubuntu-latest
    steps:
      - name: 碳排放预算检查
        run: |
          BUDGET=100  # 每次提交的碳排放预算（克CO2）
          EMISSION=$(calculate_emission)
          if [ $EMISSION -gt $BUDGET ]; then
            echo "碳排放超标，拒绝合并"
            exit 1
          fi