No Runnable methods error when migrating from Junit4 to Junit5 :

Question

I have just tried to migrate from JUnit 4 to Junit 5 using the official migration guide.

Here is my original class using JUnit 4 :

package com.mypack;

import javax.annotation.Autowired;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import com.github.springtestdbunit.annotation.DatabaseSetup;

@RunWith(SpringJUnit4ClassRunner.class)
@DatabaseSetup(value = "/db_data/dao/dbunit_file.xml")
public class PersonalTest extends AbstractTU {

    @Autowired
    private SomeDAO someDAO;

    @Test
    public void someTest() throws Exception {
        // -- Test details with classic asserts
    }
}

And here is the code of the abstract class :

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = { "classpath:/mybeans.xml" })
@TestExecutionListeners({ DependencyInjectionTestExecutionListener.class, DirtiesContextTestExecutionListener.class,
        DbUnitTestExecutionListener.class })
public abstract class AbstractTU extends AbstractModelTU {
}

This used to work correctly, even if it is perfectly clean. The AbstractModelTU class just contains some properly initialized variables used in children classes, it does not add any other annotations.

I have imported junit jupiter and junit vintage in my maven dependencies. According to the guide, I should change @RunWith(SpringJUnit4Runner.class) with @ExtendWith(SpringExtension.class). I have done that and the class show no compilation error or conflict.

However, I get this error when I run my tests :

java.lang.Exception: No runnable methods
    at org.junit.runners.BlockJUnit4ClassRunner.validateInstanceMethods(BlockJUnit4ClassRunner.java:191)
    at org.junit.runners.BlockJUnit4ClassRunner.collectInitializationErrors(BlockJUnit4ClassRunner.java:128)
    at org.junit.runners.ParentRunner.validate(ParentRunner.java:416)
    at org.junit.runners.ParentRunner.<init>(ParentRunner.java:84)
    at org.junit.runners.BlockJUnit4ClassRunner.<init>(BlockJUnit4ClassRunner.java:65)
    at org.junit.internal.builders.JUnit4Builder.runnerForClass(JUnit4Builder.java:10)
    at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
    at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:26)
    at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
    at org.junit.runners.model.RunnerBuilder.runners(RunnerBuilder.java:101)
    at org.junit.runners.model.RunnerBuilder.runners(RunnerBuilder.java:87)
    at org.junit.runners.Suite.<init>(Suite.java:102)
    at org.junit.runners.Suite.<init>(Suite.java:70)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
    at org.junit.internal.builders.AnnotatedBuilder.buildRunner(AnnotatedBuilder.java:107)
    at org.junit.internal.builders.AnnotatedBuilder.runnerForClass(AnnotatedBuilder.java:86)
    at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
    at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:26)
    at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
    at org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:33)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createUnfilteredTest(JUnit4TestLoader.java:84)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createTest(JUnit4TestLoader.java:70)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.loadTests(JUnit4TestLoader.java:43)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:444)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:678)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)

On eclipse, I can't even do a Run as Junit test, it's not displayed in the menu, despite adding junit 5 support plugin to my Eclipse 4.7 version.

EDIT : When I tried to install the plugin again, I had this error : junit5 support following solutions are not available

What am I doing wrong ? What am I missing ? Has anyone found a fix to this kind of problem ? It seems like a simple error but I cant figure it out.

Thanks in advance for your help.

Answer 1

Using the current beta support for JUnit 5 in Eclipse 4.7, you need to include manually the JUnit 5 library in your project classpath (Build path -> Add libraries -> JUnit -> JUnit 5). Then you should be able of running JUnit 5 tests as usual.

Answer 2

Folowing @Boni response I noticed that the link said that eclipse needs to be in 4.7 M-build, but i also found this link that said that eclipse should be in 4.7.1. Furthermore there is a link to this bug for runing Junit5 in eclipse 4.5 M-build.

if you are not in eclipse 4.7.1 or more you should try to update your eclipse version