JUnit 4 Expected Exception type

Question

I am trying to do a JUnit test on code that someone else has written, but I cannot figure out how to test for the exception, because the exception seems to lack a type.

Answer 1

You could either use expected in @Test annotation or provide an explicit catch block and issue a fail if the program flow is not as expected.

@Test(expected=Exception.class) // java.lang.Exception
public static void exceptionTest() throws Exception {
    rodgers = new Pirate("Dread Pirate Rodgers" , -100);
}

@Test
public static void exceptionTest() throws Exception {
    try {
        rodgers = new Pirate("Dread Pirate Rodgers" , -100);
        fail("should not reach this");
    } catch(Exception e) {
        // ok
    }
}

My personal preference is the first solution.