线程 Maven 通过顺序单元测试构建？
使用 Maven 3，可以构建具有多个线程的项目，例如，
mvn -T 4 clean install
由于我们在一致的数据库上设置了单元测试（并在执行期间操作数据），因此我们需要确保这些单元测试不会在并行执行。我知道 Maven-Surefire-Plugin 有一个配置选项可以顺序执行测试或启用并行执行：
<configuration>
<parallel>classes</parallel>
</configuration>
当我将此配置留空时，测试应该顺序执行，对吗？但是，当像上面那样使用多个 Maven 线程（-T）调用 Build 时，执行仍然是顺序的吗？
With Maven 3 it`s possible to build Projects with multiple Threads, like
mvn -T 4 clean install
Since we have Unit-Tests setting up on a consistent Database (and manipulating the data during execution), we need to make sure, that these Unit Tests are not running in parallel execution. I know that there is a configuration-option for Maven-Surefire-Plugin to execute Tests sequentially or enable parallel execution:
<configuration>
<parallel>classes</parallel>
</configuration>
When I leave this configuration empty Tests should be executed sequentially, right? But is execution still sequentially when calling the Build with multiple Maven-Threads (-T) like above?
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我想你要找的可能是这里。这是关于 Surefire 如何分叉和/或运行并行线程的问题。
I think what you're looking for might be here. It's about how surefire forks and or runs parallel threads.
据我了解并从 文档 中，并行构建并行运行
模块，而不是每个模块内的目标。在这种情况下，模块中的单元测试将按顺序运行，除非在 Surefire 中配置为并行运行。As far as I understand and from the documentation, parallel build runs
modulesin parallel and not thegoalswithin each module. That being the case, the unit tests in a module will run sequentially unless configured in surefire to run in parallel.