public void DelegatingStream_WriteAsync()
{
// Arrange
Mock<Stream> mockInnerStream = new Mock<Stream>();
MockDelegatingStream mockStream = new MockDelegatingStream(mockInnerStream.Object);
byte[] buffer = new byte[2];
int offset = 1;
int count = 1;
// Act
mockStream.WriteAsync(buffer, offset, count, CancellationToken.None);
// Assert
mockInnerStream.Verify(s => s.WriteAsync(buffer, offset, count, CancellationToken.None), Times.Once());
}
