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Junit Categories Maven Plugin

This maven plugin allows the user to list the different JUnit categories used in the tests classes and methods

Example :

Go to your maven project, and launch this command :

mvn clean test-compile org.terracotta.maven.plugins:junit-categories-maven-plugin:list

The output (on the console) should, if you have tests using JUnit categories, look like :

[INFO] --- junit-categories-maven-plugin:1.0.0-SNAPSHOT:list (default-cli) @ my-sample-project ---
[INFO] ******************************************
[INFO] * JUnit Categories found in test classes *
[INFO] ******************************************
[INFO] ------------------------------------------
[INFO] | Category : org.terracotta.test.categories.FastTests |
[INFO] ------------------------------------------
[INFO] org.terracotta.my.sample.project.OperationsTest.multiplyTest__fast
[INFO] ------------------------------------------
[INFO] | Category : org.terracotta.test.categories.SlowTests |
[INFO] ------------------------------------------
[INFO] org.terracotta.my.sample.project.OperationsTest.multiplyTest__slow

In this case, the plugin detected that OperationsTest.multiplyTest_fast is annotated with @Category(FastTests.class) and that OperationsTest.multiplyTest_slow is annotated with @Category(SlowTests.class)

  public void multiplyTest__slow () {
  public void multiplyTest__fast () {

How to build :

Simply clone this repo and run mvn clean install

Is it in Maven central ? :

No, you will have to add Terracotta maven repositories to your pom.xml :


How to use :

The plugin is org.terracotta.maven.plugins:junit-categories-maven-plugin and it has one goals: list. See the previous example.

A great companion to this tool is Maven surefire plugin, in particular its JUnit Categories support, and see the options for more details

How it works :

The plugin's list mojo will

  • add the test classes and their dependencies to the plugin classpath (this is why you need to compile - not run- your tests first)
  • scan each test class found in ${project.build.testOutputDirectory} and look for @Test and @Category annotations on classes and test methods.
  • all the info is stored in a map, that will be displayed on the console (info level)

Authors :

This plugin was developed at Terracotta, by