Maven Surefire：无法分叉并行测试执行

发布于 2024-09-16 05:37:54 字数 986 浏览 5 评论 0原文

使用 Maven Surefire，我无法分叉并行测试执行。也就是说，我的每个测试用例都必须在单独的 JVM 中运行，因此需要分叉。此外，我希望我的测试用例并行运行。第一部分工作没有问题：我能够在自己的 JVM 中运行每个测试用例。然而，第二部分对我来说仍然是一个挑战。我还没有设法让测试用例并行执行。这是我的插件声明的样子：

    <plugin>
          <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-surefire-plugin</artifactId>
      <version>2.5</version>
      <configuration>
           <parallel>methods</parallel>
           <forkMode>always</forkMode>
                <argLine>-Xms512m -Xmx512m</argLine>
       </configuration>
</plugin>

我已经尝试了方法和类，但没有看到任何并行化。我的 JUnit 版本是 4.7，如依赖声明所示：

    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.7</version>
        <scope>compile</scope>
    </dependency>

任何帮助将非常适用。

格雷瓜尔.

原文

using Maven surefire, I'm unable to fork parallel test execution. That is, each of my test cases hs to run in a serapate JVM, hence the forking. In addition, I want my test cases to run in parallel. the first part is working without problem: I'm able to run each test case in its own JVM. the second part, however is still a challene for me. I haven't managed to get the paralle execution of test cases working. Here is how my plugin declaration look like:

    <plugin>
          <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-surefire-plugin</artifactId>
      <version>2.5</version>
      <configuration>
           <parallel>methods</parallel>
           <forkMode>always</forkMode>
                <argLine>-Xms512m -Xmx512m</argLine>
       </configuration>
</plugin>

I've tried both methods and classes but haven't see any parallelization.
My JUnit version is 4.7 as shown by the depency declaration:

    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.7</version>
        <scope>compile</scope>
    </dependency>

Any help would be much appricated.

Gregoire.

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山色无中 2024-09-23 05:37:54

我认为你应该使用 threadCount使用< 时的 参数代码>并行模式：

  <plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-surefire-plugin</artifactId>
    <version>2.6</version>
    <configuration>
      <forkMode>always</forkMode>
      <argLine>-Xms512m -Xmx512m</argLine>
      <parallel>methods</parallel>
      <threadCount>4</threadCount>
    </configuration>
  </plugin>

I think that you are supposed to use the threadCount parameter when using the parallel mode:

  <plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-surefire-plugin</artifactId>
    <version>2.6</version>
    <configuration>
      <forkMode>always</forkMode>
      <argLine>-Xms512m -Xmx512m</argLine>
      <parallel>methods</parallel>
      <threadCount>4</threadCount>
    </configuration>
  </plugin>

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似狗非友 2024-09-23 05:37:54

我遇到了同样的问题，因为我使用的是 Surefire 版本 2.7，升级到 2.12 后它使用以下配置：

<plugin>
  <groupId>org.apache.maven.plugins</groupId>
  <artifactId>maven-surefire-plugin</artifactId>
  <version>2.12</version>
  <configuration>
    <parallel>classes</parallel>
    <forkMode>perthread</forkMode>
    <threadCount>4</threadCount>
  </configuration>
</plugin>

它生成了 4 个线程，每个线程运行它自己的 jvm。

I had the same problem, because i was using surefire version 2.7, after upgrade to 2.12 it worked with the following configuration:

<plugin>
  <groupId>org.apache.maven.plugins</groupId>
  <artifactId>maven-surefire-plugin</artifactId>
  <version>2.12</version>
  <configuration>
    <parallel>classes</parallel>
    <forkMode>perthread</forkMode>
    <threadCount>4</threadCount>
  </configuration>
</plugin>

It spawned 4 threads, each running it's own jvm.

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硬不硬你别怂 2024-09-23 05:37:54

确保您收到类似以下内容的日志消息

[INFO] Concurrency config is {perCoreThreadCount=false, threadCount=1, parallel=classes, configurableParallelComputerPresent=true}

就在此标题之前：

-------------------------------------------------------
 T E S T S
-------------------------------------------------------

此消息表明并行 Surefire junit 提供程序处于活动状态。

如果不存在，则可能会选择与您想象的不同版本的 junit。低于 4.7 的任何内容都不起作用。运行 mvn dependency:tree 以检查存在哪些版本。

您还应该升级到 Surefire 2.6，因为许多与并行运行相关的小错误已得到修复。出于同样的原因，您应该使用最新的 junit。

Make sure you get a log message something like this

[INFO] Concurrency config is {perCoreThreadCount=false, threadCount=1, parallel=classes, configurableParallelComputerPresent=true}

Just before this heading:

-------------------------------------------------------
 T E S T S
-------------------------------------------------------

This message indicates that the parallel surefire junit provider is active.

If this is not present surefire may be picking up a different version of junit than you think. Anything below 4.7 will not work. Run mvn dependency:tree to check which version(s) are present.

You should also upgrade to surefire 2.6 since a number of minor bugs related to parallel running have been fixed. For the same reason you should use the latest junit.

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