Conditionally ignoring tests in JUnit

JUnit conveniently lets you annotate a test method with @Ignore.

@Test
@Ignore
public void testAdd() {
   ...
}

This causes JUnit to completely ignore the method.

What if you want to only ignore the test under a condition determined at runtime? This would be nice:

@Test
@Ignore(someCondition())
public void testAdd() {
   ...
}

But Java and JUnit do not work like that. Instead, you need to use the Assume class.

@Test
public void testAdd() {
   Assume.assumeTrue(someCondition());
   ...
}

Voila!