Exclude specific tests from being run in parallel in jUnit

Question

I recently stumbled upon a simple way to parallelize the execute of tests via jUnit by specifying the following in a java project\'s pom.xml file:

Answer 1

I'm a little late to the party here, and tried both of the previous answers, which work in some cases but don't provide a complete solution. Possibly relevant, I'm working with JUnit 5.

@polaretto's answer suggests the jcip @NotThreadSafe annotation, which works with the surefire plugin in a build, but does not work with command line mvn test. @patson-luk's answer is on the right track, unfortunately by excluding the "bad test" in the default configuration, it remained excluded and was not run in the separate .

I managed to get this working using the following configuration:

For JUnit 5, these are sufficient

In my src/main/resources/junit-platform.properties file:

junit.jupiter.execution.parallel.enabled = true
junit.jupiter.execution.parallel.mode.default = concurrent

At the top of my not-thread-safe class (instead of the jcip annotation):

import static org.junit.jupiter.api.parallel.ExecutionMode.SAME_THREAD;

@Execution(SAME_THREAD)
class SingleThreadedTest {
   // ...
}

For JUnit 4, modify the accepted answer as follows:

  org.apache.maven.plugins
  maven-surefire-plugin
  ${maven-surefire-plugin.version}
  
    
    true
  
  
    
      single-thread-test
      test
      
        test
      
      
        
        
          **/SingleThreadedTest.java
        
        1
        false
        1
        false
      
    
    
      multi-thread-test
      test
      
        test
      
      
        
          **/SingleThreadedTest.java
        
        4
        true
        all
        true
        false