csharp/src/Google.Protobuf.Test/Compatibility/StreamExtensionsTest.cs

#region Copyright notice and license
// Protocol Buffers - Google's data interchange format
// Copyright 2015 Google Inc.  All rights reserved.
// https://developers.google.com/protocol-buffers/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#endregion

#if NET35
using System;
using System.IO;
using NUnit.Framework;
using Google.Protobuf.Compatibility;

namespace Google.Protobuf.Test.Compatibility
{
    public class StreamExtensionsTest
    {
        [Test]
        public void CopyToNullArgument()
        {
            var memoryStream = new MemoryStream();
            Assert.Throws<ArgumentNullException>(() => memoryStream.CopyTo(null));
        }

        [Test]
        public void CopyToTest()
        {
            byte[] bytesToStream = new byte[] { 0x31, 0x08, 0xFF, 0x00 };
            Stream source = new MemoryStream(bytesToStream);
            Stream destination = new MemoryStream((int)source.Length);
            source.CopyTo(destination);
            destination.Seek(0, SeekOrigin.Begin);

            Assert.AreEqual(0x31, destination.ReadByte());
            Assert.AreEqual(0x08, destination.ReadByte());
            Assert.AreEqual(0xFF, destination.ReadByte());
            Assert.AreEqual(0x00, destination.ReadByte());
            Assert.AreEqual(-1, destination.ReadByte());
        }
    }
}
#endif