public async void CopyDataAsync_NullDestination_ThrowsArgumentNullException()
{
var source = CreateFakePipeReader();
var destination = CreateNullPipeWriter();
async Task copyAction()
{
_ = await PipeReaderCopyDataExtensions.CopyDataAsync(source, destination, 1, CancellationToken.None);
}
_ = await Assert.ThrowsAsync <ArgumentNullException>(copyAction);
}
public async void CopyDataAsync_CorrectArguments_CopiesData(byte[] sourceArray, long copyLimit,
long expectedCopyCount, byte[] expectedDestinationArray)
{
using var sourceStream = new MemoryStream(sourceArray, false);
using var destinationStream = new MemoryStream();
var source = PipeReader.Create(sourceStream);
var destination = PipeWriter.Create(destinationStream);
var copyCount = await PipeReaderCopyDataExtensions.CopyDataAsync(source, destination, copyLimit, cancellationToken : CancellationToken.None);
var destinationArray = destinationStream.ToArray();
Assert.Equal(expectedCopyCount, copyCount);
Assert.Equal(expectedDestinationArray, destinationArray);
}