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  1. TestRunner and BaseTestRunner show a Stub error message

Your stack trace compared to the selected pattern

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java.lang.RuntimeException: Stub!
2 matching frames hidden
    at junit.textui.TestRunner.<init>(
    at junit.textui.TestRunner.<init>(


JaviRpo2 months ago

This problem happens because Android Platform (android.jar) already contains JUnit classes. IDEA test runner loads these classes and sees that they are from the old JUnit, while you are trying to use annotated tests which is a feature of the new JUnit, therefore you get the error from the test runner.

The solution is simple, open the Project Structure | Modules | Dependencies, and move the junit-X.X.jar (or any other library where you know the TestRunner and BaseTestRunner classes are) up, so that it comes before Android 1.X Platform in the classpath. Now the test runner will be happy as it loads the new JUnit version.

External results for this pattern (10)

  1. sksamuelvia GitHub3 weeks ago
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