JUnit expected tag not working as expected

Question

I have the following test case in eclipse, using JUnit 4 which is refusing to pass. What could be wrong?

@Test(expected = IllegalArgumentExc         


        

Answer 1

The problem is that your AnnounceThreadTest extends TestCase. Because it extends TestCase, the JUnit Runner is treating it as a JUnit 3.8 test, and the test is running because it starts with the word test, hiding the fact that the @Test annotiation is in fact not being used at all.

To fix this, remove the "extends TestCase" from the class definition.