Akka.Streams.Tests.IO.InputStreamSinkSpec.InputStreamSink_should_return_all_data_when_upstream_is_completed C# (CSharp) Method

        public void InputStreamSink_should_return_all_data_when_upstream_is_completed()
        {
            this.AssertAllStagesStopped(() =>
            {
                var sinkProbe = CreateTestProbe();
                var t = this.SourceProbe<ByteString>().ToMaterialized(TestSink(sinkProbe), Keep.Both).Run(_materializer);
                var probe = t.Item1;
                var inputStream = t.Item2;
                var bytes = RandomByteString(1);

                probe.SendNext(bytes);
                sinkProbe.ExpectMsg<GraphStageMessages.Push>();

                probe.SendComplete();
                sinkProbe.ExpectMsg<GraphStageMessages.UpstreamFinish>();

                var result = ReadN(inputStream, 3);
                result.Item1.Should().Be(1);
                result.Item2.Should().BeEquivalentTo(bytes);
            }, _materializer);
        }