package junit.tests.runner; import junit.framework.Test; import junit.framework.TestCase; import junit.runner.BaseTestRunner; public class BaseTestRunnerTest extends TestCase { public class MockRunner extends BaseTestRunner { protected void runFailed(String message) { } public void testEnded(String testName) { } public void testFailed(int status, Test test, Throwable t) { } public void testStarted(String testName) { } } public static class NonStatic { public Test suite() { return null; } } public void testInvokeNonStaticSuite() { BaseTestRunner runner= new MockRunner(); runner.getTest("junit.tests.runner.BaseTestRunnerTest$NonStatic"); // Used to throw NullPointerException } }