title: No Runnable methods error when migrating from Junit4 to Junit5 :
body: <p>I have just tried to migrate from JUnit 4 to Junit 5 using the official migration guide.</p>
  
  <p>Here is my original class using JUnit 4 :</p>
  
  <pre><code>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
      }
  }
  </code></pre>
  
  <p>And here is the code of the abstract class : </p>
  
  <pre><code>@RunWith(SpringJUnit4ClassRunner.class)
  @ContextConfiguration(locations = { "classpath:/mybeans.xml" })
  @TestExecutionListeners({ DependencyInjectionTestExecutionListener.class, DirtiesContextTestExecutionListener.class,
          DbUnitTestExecutionListener.class })
  public abstract class AbstractTU extends AbstractModelTU {
  }
  </code></pre>
  
  <p>This used to work correctly, even if it is perfectly clean.
  The <em>AbstractModelTU</em> class just contains some properly initialized variables used in children classes, it does not add any other annotations.</p>
  
  <p>I have imported junit jupiter and junit vintage in my maven dependencies.
  According to the guide, I should change <code>@RunWith(SpringJUnit4Runner.class)</code> with <code>@ExtendWith(SpringExtension.class)</code>. I have done that and the class show no compilation error or conflict.</p>
  
  <p>However, I get this error when I run my tests :</p>
  
  <pre><code>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.&lt;init&gt;(ParentRunner.java:84)
      at org.junit.runners.BlockJUnit4ClassRunner.&lt;init&gt;(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.&lt;init&gt;(Suite.java:102)
      at org.junit.runners.Suite.&lt;init&gt;(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)
  </code></pre>
  
  <p>On eclipse, I can't even do a <em>Run as Junit test</em>, it's not displayed in the menu, despite adding junit 5 support plugin to my Eclipse 4.7 version.</p>
  
  <p><strong>EDIT :</strong> When I tried to install the plugin again, I had this error : <em>junit5 support following solutions are not available</em></p>
  
  <p>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.</p>
  
  <p>Thanks in advance for your help.</p>