java.lang.NullPointerException
at org.eclipse.jdt.internal.junit4.runner.SubForestFilter.shouldRun(SubForestFilter.java:81)
at org.junit.internal.runners.TestClassMethodsRunner.filter(TestClassMethodsRunner.java:84)
at org.junit.runner.manipulation.Filter.apply(Filter.java:47)
at org.junit.internal.runners.TestClassRunner.filter(TestClassRunner.java:64)
at org.junit.runner.manipulation.Filter.apply(Filter.java:47)
at org.junit.internal.requests.FilterRequest.getRunner(FilterRequest.java:34)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createFilteredTest(JUnit4TestLoader.java:80)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createTest(JUnit4TestLoader.java:71)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.loadTests(JUnit4TestLoader.java:46)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:522)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:760)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:460)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:206)
If you get the same error like me, please change the version of junit, junit4.3 will have an error when a single method is tested. Changing to 4.12 perfectly solves the problem