如何在多模块Maven构建中列出最慢的JUnit测试

问题描述：

如何列出多模块Maven构建中最慢的JUnit测试?

How can I list the slowest JUnit tests in a multi-module Maven build?

这应该包含在所有模块中.

This should be accross all modules.

Hudson/Jenkins解决方案也可以.

A Hudson/Jenkins solution could also do.

答

免责声明:我对我的bash解决方案表示真正的歉意，尽管它可以正常工作并且适合一行:-).如果您不耐烦，请移至底部.

Disclaimer: I truly apologize for my bash solution, although it works and fits in one line :-). If you are impatient, go to the bottom.

首先，我们需要找到maven-surefire-plugin生成的所有TEST-*.xml文件.在项目的根目录中的mvn test之后运行此命令，以发现所有子模块中的测试结果:

First we need to find all TEST-*.xml files produced by maven-surefire-plugin. Run this after mvn test in the root directory of your project to discover test results in all submodules:

$ find . -iname "TEST-*.xml"

幸运的是，这些文件的格式非常简单，只需一个grep，我们便拥有了所需的内容:

Fortunately the format of these files is pretty straightforward, a simple grep and we have what we need:

$ grep -h "<testcase" `find . -iname "TEST-*.xml"`

现在，一些sed魔术可以提取调用时间，测试用例类和方法名称:

Now some sed magic to extract invocation time, test case class and method name:

$ sed 's/<testcase time="\(.*\)" classname="\(.*\)" name="\(.*\)".*/\1\t\2.\3/'

剩下的只是对结果进行排序并显示运行时间最长的测试了:

There's nothing more left just to sort the result and display longest running tests:

$ sort -rn | head

承诺的单线:

$ grep -h "<testcase" `find . -iname "TEST-*.xml"` | sed 's/<testcase time="\(.*\)" classname="\(.*\)" name="\(.*\)".*/\1\t\2.\3/' | sort -rn | head

令人惊讶的是，结果看起来很合理(以Activiti 5.1多模块代码库为例):

Amazingly, the results look reasonable (Activiti 5.1 multi-module code-base taken as an example):

3.029   org.activiti.examples.variables.jpa.JPAVariableTest.testStoreJPAEntityAsVariable
2.904   org.activiti.engine.test.forms.FormsTest.testTaskFormPropertyDefaultsAndFormRendering
1.594   org.activiti.engine.test.api.mgmt.ManagementServiceTest.testGetJobExceptionStacktrace
1.114   org.activiti.examples.variables.jpa.JPAVariableTest.testUpdateJPAEntityValues
1.006   org.activiti.engine.test.db.EngineRebootProcessDefinitionCacheTest.testStartProcessInstanceByIdAfterReboot
0       org.activiti.engine.test.pvm.PvmVariablesTest.testVariables
0       org.activiti.engine.test.pvm.PvmScopeWaitStateTest.testWaitStateScope
0       org.activiti.engine.test.pvm.PvmScopesAndConcurrencyTest.testConcurrentPathsGoingIntoScope
0       org.activiti.engine.test.pvm.PvmEventTest.testNestedActivitiesEventsOnTransitionEvents
0       org.activiti.engine.test.pvm.PvmEventTest.testEmbeddedSubProcessEvents

如何在多模块Maven构建中列出最慢的JUnit测试

承诺的单线:

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