System.Net.Sockets.Tests.NetworkStreamTest.CopyToAsync_InvalidArguments_Throws C# (CSharp) Method

        public async Task CopyToAsync_InvalidArguments_Throws()
        {
            await RunWithConnectedNetworkStreamsAsync((stream, _) =>
            {
                // Null destination
                Assert.Throws<ArgumentNullException>("destination", () => { stream.CopyToAsync(null); });

                // Buffer size out-of-range
                Assert.Throws<ArgumentOutOfRangeException>("bufferSize", () => { stream.CopyToAsync(new MemoryStream(), 0); });
                Assert.Throws<ArgumentOutOfRangeException>("bufferSize", () => { stream.CopyToAsync(new MemoryStream(), -1, CancellationToken.None); });

                // Copying to non-writable stream
                Assert.Throws<NotSupportedException>(() => { stream.CopyToAsync(new MemoryStream(new byte[0], writable: false)); });

                // Copying after disposing the stream
                stream.Dispose();
                Assert.Throws<ObjectDisposedException>(() => { stream.CopyToAsync(new MemoryStream()); });

                return Task.CompletedTask;
            });
        }