public async Task GivenDicomFileWithFrames_WhenRetrievingWithTransferSyntax_ThenTranscoderShouldBeInvokedAsExpected(bool originalTransferSyntaxRequested, string requestedRepresentation, bool shouldBeInvoked)
{
(DicomFile file, Stream stream) = StreamAndStoredFileFromDataset(GenerateDatasetsFromIdentifiers(), 1).Result;
ITranscoder transcoder = Substitute.For <ITranscoder>();
transcoder.TranscodeFrame(Arg.Any <DicomFile>(), Arg.Any <int>(), Arg.Any <string>()).Returns(_recyclableMemoryStreamManager.GetStream());
FrameHandler frameHandler = new FrameHandler(transcoder, _recyclableMemoryStreamManager);
IReadOnlyCollection <Stream> result = await frameHandler.GetFramesResourceAsync(stream, new int[] { 0 }, originalTransferSyntaxRequested, requestedRepresentation);
// Call Position of LazyTransformReadOnlyStream so that transcoder.TranscodeFrame is invoked
long pos = result.First().Position;
if (shouldBeInvoked)
{
transcoder.Received().TranscodeFrame(Arg.Any <DicomFile>(), Arg.Any <int>(), Arg.Any <string>());
}
else
{
transcoder.DidNotReceive().TranscodeFrame(Arg.Any <DicomFile>(), Arg.Any <int>(), Arg.Any <string>());
}
}
