@Theory
public void failsWhenCollectionContainsOneItemMatchingMatcher(Collection<Object> collection) {
assumeThat(collection, not(hasItem(isA(FourConstant.class))));
expectAssertionErrorForIncorrectNumberOfMatches("is not <4>", 1);
assertThat(collection, CollectionMatchers.hasZeroItemsWith("value", is(not(4))));
}
@Theory
public void succeedsWhenCollectionContainsZeroItemsMatchingMatcher(
Collection<Object> collection) {
assumeThat(collection, hasItem(isA(FourConstant.class)));
assertThat(collection, CollectionMatchers.hasZeroItemsWith("value", is(not(4))));
}
@Test
public void failsWhenCollectionIsNullAndPassedAMatcher() {
expectAssertionErrorForNullCollection("is not <4>");
assertThat(null, CollectionMatchers.hasZeroItemsWith("value", is(not(4))));
}