#region Copyright notice and license

// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc.  All rights reserved.
// http://github.com/jskeet/dotnet-protobufs/
// Original C++/Java/Python code:
// http://code.google.com/p/protobuf/
//
// 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

using System;
using System.IO;
using Google.ProtocolBuffers.TestProtos;
using Xunit;

namespace Google.ProtocolBuffers
{
    public class AbstractMessageLiteTest
    {
        [Fact]
        public void TestMessageLiteToByteString()
        {
            TestRequiredLite msg = TestRequiredLite.CreateBuilder()
                .SetD(42)
                .SetEn(ExtraEnum.EXLITE_BAZ)
                .Build();

            ByteString b = msg.ToByteString();
            Assert.Equal(4, b.Length);
            Assert.Equal(TestRequiredLite.DFieldNumber << 3, b[0]);
            Assert.Equal(42, b[1]);
            Assert.Equal(TestRequiredLite.EnFieldNumber << 3, b[2]);
            Assert.Equal((int) ExtraEnum.EXLITE_BAZ, b[3]);
        }

        [Fact]
        public void TestMessageLiteToByteArray()
        {
            TestRequiredLite msg = TestRequiredLite.CreateBuilder()
                .SetD(42)
                .SetEn(ExtraEnum.EXLITE_BAZ)
                .Build();

            ByteString b = msg.ToByteString();
            ByteString copy = ByteString.CopyFrom(msg.ToByteArray());
            Assert.Equal(b, copy);
        }

        [Fact]
        public void TestMessageLiteWriteTo()
        {
            TestRequiredLite msg = TestRequiredLite.CreateBuilder()
                .SetD(42)
                .SetEn(ExtraEnum.EXLITE_BAZ)
                .Build();

            MemoryStream ms = new MemoryStream();
            msg.WriteTo(ms);
            Assert.Equal(msg.ToByteArray(), ms.ToArray());
        }

        [Fact]
        public void TestMessageLiteWriteDelimitedTo()
        {
            TestRequiredLite msg = TestRequiredLite.CreateBuilder()
                .SetD(42)
                .SetEn(ExtraEnum.EXLITE_BAZ)
                .Build();

            MemoryStream ms = new MemoryStream();
            msg.WriteDelimitedTo(ms);
            byte[] buffer = ms.ToArray();

            Assert.Equal(5, buffer.Length);
            Assert.Equal(4, buffer[0]);
            byte[] msgBytes = new byte[4];
            Array.Copy(buffer, 1, msgBytes, 0, 4);
            Assert.Equal(msg.ToByteArray(), msgBytes);
        }

        [Fact]
        public void TestIMessageLiteWeakCreateBuilderForType()
        {
            IMessageLite msg = TestRequiredLite.DefaultInstance;
            Assert.Equal(typeof(TestRequiredLite.Builder), msg.WeakCreateBuilderForType().GetType());
        }

        [Fact]
        public void TestMessageLiteWeakToBuilder()
        {
            IMessageLite msg = TestRequiredLite.CreateBuilder()
                .SetD(42)
                .SetEn(ExtraEnum.EXLITE_BAZ)
                .Build();

            IMessageLite copy = msg.WeakToBuilder().WeakBuild();
            Assert.Equal(msg.ToByteArray(), copy.ToByteArray());
        }

        [Fact]
        public void TestMessageLiteWeakDefaultInstanceForType()
        {
            IMessageLite msg = TestRequiredLite.DefaultInstance;
            Assert.True(Object.ReferenceEquals(TestRequiredLite.DefaultInstance, msg.WeakDefaultInstanceForType));
        }
    }
}