ServiceReference reference = _domain.createInOnlyService(TEST_SERVICE, _provider);
MockExchange ex = new MockExchange();
Message msg = ex.createMessage().setContent("TEST");
ex.setMessage(msg);
ex.getMessage().getContext().setProperty("message-prop", "abc");
ex.consumer(reference, new InOnlyOperation("Test"));
ex.provider(_domain.getServices().get(0), new InOnlyOperation("Test"));
invoker.handleMessage(ex);
Assert.assertTrue(_provider.getMessages().size() == 1);
Exchange receivedEx = _provider.getMessages().poll();
Assert.assertEquals("abc", receivedEx.getMessage().getContext().getPropertyValue("message-prop"));