public void CompleteTest()
{
using var Stream = new PipelineStream();
Assert.AreEqual(0, Stream.Length);
var WriteMessage1 = "HELLO";
Stream.Write(Encoding.GetBytes(WriteMessage1));
Stream.Flush();
var ReadCount = Encoding.GetByteCount(WriteMessage1);
Assert.AreEqual(ReadCount, Stream.Length);
var ReadBytes = new byte[ReadCount];
ReadCount = Stream.Read(ReadBytes);
Assert.AreEqual(0, Stream.Length);
var ReadMessage1 = Encoding.GetString(ReadBytes.AsSpan().Slice(0, ReadCount));
Assert.AreEqual(WriteMessage1, ReadMessage1);
Stream.Complete();
var WriteMessage2 = "HI!";
Assert.ThrowsException <InvalidOperationException>(() => Stream.Write(Encoding.GetBytes(WriteMessage2)));
}
