测试并行与性能优化

并行测试大幅缩短测试执行时间。

并行测试配置

<plugin>
  <groupId>org.apache.maven.plugins</groupId>
  <artifactId>maven-surefire-plugin</artifactId>
  <configuration>
    <parallel>classes</parallel>
    <threadCount>4</threadCount>
    <useUnlimitedThreads>false</useUnlimitedThreads>
  </configuration>
</plugin>

parallel 值

JUnit 5 并行

配置

<configuration>
  <parallel>methods</parallel>
  <threadCount>4</threadCount>
  <useUnlimitedThreads>false</useUnlimitedThreads>
</configuration>

JUnit 5 junit-platform.properties

junit.jupiter.execution.parallel.enabled=true
junit.jupiter.execution.parallel.config.strategy=fixed
junit.jupiter.execution.parallel.config.fixed.parallelism=4

要点总结

• parallel 配置并行级别
• threadCount 配置线程数
• classes 类级并行推荐
• JUnit 5 需额外 junit-platform.properties 配置