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Running junit tests in parallel?
I found the test cases inside jUnit are executed in sequence, how to make them execute in parallel?
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By enabling parallel execution, the JUnit engine starts using the ForkJoin thread pool. Next, we need to add a configuration to utilize this thread pool. We need to choose a parallelization strategy. JUnit provides two implementations (dynamic and fixed) and a custom option to create our implementation.
Yes, You can. Show activity on this post. JUnit Toolbox provides JUnit runners for parallel execution of tests.
The easiest (as in least amount of new code required) way to do this is to run the test as a parametrized test (annotate with an @RunWith(Parameterized. class) and add a method to provide 10 empty parameters). That way the framework will run the test 10 times.
@RepeatedTest annotation is used to repeat a test for a specific number of times. The basic syntax of @RepeatedTest is as follows: The annotation @RepeatedTest is used for a test method instead of the annotation @Test. A number is passed as the input parameter of the annotation.
Junit4 provides parallel feature using ParallelComputer:
public class ParallelComputerTest { @Test public void test() { Class[] cls={ParallelTest1.class,ParallelTest2.class }; //Parallel among classes JUnitCore.runClasses(ParallelComputer.classes(), cls); //Parallel among methods in a class JUnitCore.runClasses(ParallelComputer.methods(), cls); //Parallel all methods in all classes JUnitCore.runClasses(new ParallelComputer(true, true), cls); } public static class ParallelTest1 { @Test public void a(){} @Test public void b(){} } public static class ParallelTest2 { @Test public void a(){} @Test public void b(){} } } If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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