Examples with StateCheckingResponseObserver com.google.api.gax.rpc.StateCheckingResponseObserver used on opensource projects

Example 1 with StateCheckingResponseObserver

use of com.google.api.gax.rpc.StateCheckingResponseObserver in project gax-java by googleapis.

the class GrpcDirectServerStreamingCallableTest method testObserverErrorCancelsCall.

@Test
public void testObserverErrorCancelsCall() throws Throwable {
    final RuntimeException expectedCause = new RuntimeException("some error");
    final SettableApiFuture<Throwable> actualErrorF = SettableApiFuture.create();
    ResponseObserver<Money> moneyObserver = new StateCheckingResponseObserver<Money>() {

        @Override
        protected void onStartImpl(StreamController controller) {
        }

        @Override
        protected void onResponseImpl(Money response) {
            throw expectedCause;
        }

        @Override
        protected void onErrorImpl(Throwable t) {
            actualErrorF.set(t);
        }

        @Override
        protected void onCompleteImpl() {
            actualErrorF.set(null);
        }
    };
    streamingCallable.call(DEFAULT_REQUEST, moneyObserver);
    Throwable actualError = actualErrorF.get(500, TimeUnit.MILLISECONDS);
    Truth.assertThat(actualError).isInstanceOf(ApiException.class);
    Truth.assertThat(((ApiException) actualError).getStatusCode().getCode()).isEqualTo(StatusCode.Code.CANCELLED);
    // grpc is responsible for the immediate cancellation
    Truth.assertThat(actualError.getCause()).isInstanceOf(StatusRuntimeException.class);
    // and the client error is cause for grpc to cancel it
    Truth.assertThat(actualError.getCause().getCause()).isSameInstanceAs(expectedCause);
}