@Test(expected = NullPointerException.class)
public void testFilterShouldThrowNullPointerExceptionForNull() throws Exception {
// Given:
// When:
underTest.filter(null);
// Then: expect exception
}
@Test
public void testFilterShould() throws Exception {
// Given:
Filter filter = Filter.ALL;
// When:
underTest.filter(filter);
// Then:
assertThat(underTest.getDescription().getChildren().size()).isGreaterThan(0);
}
