How to use

getItemSequenceInfo

method

in

org.mule.runtime.core.api.event.CoreEvent

 @Override
 public Supplier<CorrelationInfo> resolve(ExecutionContext executionContext) {
  return () -> {
   CoreEvent event = ((ExecutionContextAdapter) executionContext).getEvent();
   return new ImmutableCorrelationInfo(event.getContext().getId(), true, event.getCorrelationId(),
                     event.getItemSequenceInfo().orElse(null));
  };
 }
}

@Before
public void setUp() {
 when(event.getError()).thenReturn(empty());
 when(event.getAuthentication()).thenReturn(empty());
 Message msg = of(null);
 when(event.getMessage()).thenReturn(msg);
 when(event.asBindingContext()).thenReturn(getTargetBindingContext(msg));
 when(event.getItemSequenceInfo()).thenReturn(empty());
}

private CoreEvent getEventWithError(Optional<Error> error) {
 CoreEvent event = mock(CoreEvent.class, RETURNS_DEEP_STUBS);
 doReturn(error).when(event).getError();
 when(event.getMessage().getPayload()).thenReturn(new TypedValue<>(null, OBJECT));
 when(event.getMessage().getAttributes()).thenReturn(new TypedValue<>(null, OBJECT));
 when(event.getAuthentication()).thenReturn(empty());
 when(event.getItemSequenceInfo()).thenReturn(empty());
 return event;
}

@Test
public void noSequenceSizeItemSequenceInfoBinding() throws Exception {
 CoreEvent event = spy(testEvent());
 when(event.getItemSequenceInfo()).thenReturn(of(ItemSequenceInfo.of(43)));
 TypedValue result = expressionLanguage.evaluate(ITEM_SEQUENCE_INFO + ".position", event, BindingContext.builder().build());
 assertThat(result.getValue(), is(43));
 result = expressionLanguage.evaluate(ITEM_SEQUENCE_INFO + ".sequenceSize", event, BindingContext.builder().build());
 assertThat(result.getValue(), is(nullValue()));
}

@Test
public void itemSequenceInfoBinding() throws Exception {
 CoreEvent event = spy(testEvent());
 when(event.getItemSequenceInfo()).thenReturn(of(ItemSequenceInfo.of(43, 100)));
 TypedValue result = expressionLanguage.evaluate(ITEM_SEQUENCE_INFO + ".position", event, BindingContext.builder().build());
 assertThat(result.getValue(), is(43));
 result = expressionLanguage.evaluate(ITEM_SEQUENCE_INFO + ".sequenceSize", event, BindingContext.builder().build());
 assertThat(result.getValue(), is(100));
}

private CoreEvent getEventWithError(Optional<Error> error) {
 CoreEvent event = mock(CoreEvent.class, RETURNS_DEEP_STUBS);
 doReturn(error).when(event).getError();
 when(event.getMessage().getPayload()).thenReturn(new TypedValue<>(null, OBJECT));
 when(event.getMessage().getAttributes()).thenReturn(new TypedValue<>(null, OBJECT));
 when(event.getAuthentication()).thenReturn(empty());
 when(event.getItemSequenceInfo()).thenReturn(empty());
 return event;
}

 @Override
 public LazyValue<CorrelationInfo> resolve(ExecutionContext executionContext) {
  return new LazyValue<>(() -> {
   CoreEvent event = ((ExecutionContextAdapter) executionContext).getEvent();
   return new ImmutableCorrelationInfo(event.getContext().getId(), true, event.getCorrelationId(),
                     event.getItemSequenceInfo().orElse(null));
  });
 }
}

@Test
public void noSequenceSizeItemSequenceInfoBinding() throws Exception {
 CoreEvent event = spy(testEvent());
 when(event.getItemSequenceInfo()).thenReturn(of(ItemSequenceInfo.of(43)));
 TypedValue result = expressionLanguage.evaluate(ITEM_SEQUENCE_INFO + ".position", event, BindingContext.builder().build());
 assertThat(result.getValue(), is(43));
 result = expressionLanguage.evaluate(ITEM_SEQUENCE_INFO + ".sequenceSize", event, BindingContext.builder().build());
 assertThat(result.getValue(), is(nullValue()));
}

@Test
public void itemSequenceInfoBinding() throws Exception {
 CoreEvent event = spy(testEvent());
 when(event.getItemSequenceInfo()).thenReturn(of(ItemSequenceInfo.of(43, 100)));
 TypedValue result = expressionLanguage.evaluate(ITEM_SEQUENCE_INFO + ".position", event, BindingContext.builder().build());
 assertThat(result.getValue(), is(43));
 result = expressionLanguage.evaluate(ITEM_SEQUENCE_INFO + ".sequenceSize", event, BindingContext.builder().build());
 assertThat(result.getValue(), is(100));
}