@Test
public void ChainHandler_is_NOT_called() {
// given:
Predicate<Integer> filter = Mockito.mock(UberClasses.cast(Predicate.class));
EventHandler<Integer> handler = Mockito.mock(UberClasses.cast(EventHandler.class));
Mockito.when(filter.test(Matchers.any())).thenReturn(false);
Mockito.when(handler.test(Matchers.any())).thenReturn(true);
EventCollector<Listener, Integer> collector =
EventCollector.create(
Listener.class, Listener::event, EventHandlers.chain(filter, handler));
Listener target = collector.getTarget();
// when
target.event(100);
// then
InOrder order = Mockito.inOrder(filter, handler);
order.verify(filter, Mockito.times(1)).test(100);
order.verifyNoMoreInteractions();
}
@Test
public void eventCollected_is_not_called() {
// given:
Predicate<Integer> filter = Mockito.mock(UberClasses.cast(Predicate.class));
EventHandler<Integer> filterEH = Mockito.mock(UberClasses.cast(EventHandler.class));
Mockito.when(filter.test(Matchers.any())).thenReturn(false);
Mockito.when(filterEH.test(Matchers.any())).thenReturn(true);
EventCollector<Listener, Integer> collector = createCollector(filter, filterEH);
Listener target = collector.getTarget();
// when:
target.event(100);
target.event(200);
// then:
Mockito.verify(filter, Mockito.times(2)).test(Matchers.any());
Mockito.verify(filterEH, Mockito.times(2)).test(Matchers.any());
// and:
Mockito.verifyNoMoreInteractions(filterEH);
}
@Test
public void events_are_collected() {
// given:
Predicate<Integer> filter = Mockito.mock(UberClasses.cast(Predicate.class));
EventHandler<Integer> filterEH = Mockito.mock(UberClasses.cast(EventHandler.class));
Mockito.when(filter.test(Matchers.any())).thenReturn(true);
Mockito.when(filterEH.test(Matchers.any())).thenReturn(true);
Mockito.when(filter.test(200)).thenReturn(false);
EventCollector<Listener, Integer> collector = createCollector(filter, filterEH);
Listener target = collector.getTarget();
// when:
target.event(100);
target.event(200);
target.event(300);
// then:
Mockito.verify(filter, Mockito.times(3)).test(Matchers.any());
Mockito.verify(filterEH, Mockito.times(3)).test(Matchers.any());
// and:
List<Integer> events = collector.getEvents();
Assert.assertThat(events, contains(100, 300));
Assert.assertThat(collector.getLastEvent(), equalTo(300));
}