﻿//
// VolatileTest.cs
//
// Authors:
//       Marek Safar (marek.safar@gmail.com)
//
// Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//

using NUnit.Framework;
using System;
using System.Threading;

namespace MonoTests.System.Threading
{
    [TestFixture]
    public class VolatileTest
    {
        [Test]
        public void ReadPrimitives()
        {
            var v1 = true;
            Assert.AreEqual(true, Volatile.Read(ref v1), "#v1");

            byte v2 = 4;
            Assert.AreEqual(4, Volatile.Read(ref v2), "#v2");

            var v3 = double.MaxValue;
            Assert.AreEqual(double.MaxValue, Volatile.Read(ref v3), "#v3");

            var v4 = float.Epsilon;
            Assert.AreEqual(float.Epsilon, Volatile.Read(ref v4), "#v4");

            var v5 = int.MinValue;
            Assert.AreEqual(int.MinValue, Volatile.Read(ref v5), "#v5");

            var v6 = IntPtr.Zero;
            Assert.AreEqual(IntPtr.Zero, Volatile.Read(ref v6), "#v6");

            var v7 = long.MaxValue;
            Assert.AreEqual(long.MaxValue, Volatile.Read(ref v7), "#v7");

            sbyte v8 = 44;
            Assert.AreEqual(44, Volatile.Read(ref v8), "#v8");

            short v9 = -999;
            Assert.AreEqual(-999, Volatile.Read(ref v9), "#v9");

            var v10 = uint.MaxValue;
            Assert.AreEqual(uint.MaxValue, Volatile.Read(ref v10), "#v10");

            var v11 = (UIntPtr)uint.MaxValue;
            Assert.AreEqual(new UIntPtr(uint.MaxValue), Volatile.Read(ref v11), "#v11");

            var v12 = ulong.MaxValue;
            Assert.AreEqual(ulong.MaxValue, Volatile.Read(ref v12), "#v12");

            var v13 = ushort.MaxValue;
            Assert.AreEqual(ushort.MaxValue, Volatile.Read(ref v13), "#v13");

            var s = "ABC";
            Assert.AreEqual(s, Volatile.Read(ref s));
        }

        [Test]
        public void WritePrimitives()
        {
            var v1 = false;
            Volatile.Write(ref v1, true);
            Assert.AreEqual(true, v1, "#v1");

            byte v2 = 2;
            Volatile.Write(ref v2, 4);
            Assert.AreEqual(4, v2, "#v2");

            double v3 = 55667;
            Volatile.Write(ref v3, double.MaxValue);
            Assert.AreEqual(double.MaxValue, v3, "#v3");

            float v4 = 1;
            Volatile.Write(ref v4, float.MaxValue);
            Assert.AreEqual(float.MaxValue, v4, "#v4");

            var v5 = 0;
            Volatile.Write(ref v5, int.MinValue);
            Assert.AreEqual(int.MinValue, v5, "#v5");

            var v6 = IntPtr.Zero;
            Volatile.Write(ref v6, new IntPtr(5));
            Assert.AreEqual(new IntPtr(5), v6, "#v6");

            long v7 = 0;
            Volatile.Write(ref v7, long.MaxValue);
            Assert.AreEqual(long.MaxValue, v7, "#v7");

            sbyte v8 = 2;
            Volatile.Write(ref v8, 44);
            Assert.AreEqual(44, v8, "#v8");

            short v9 = 3;
            Volatile.Write(ref v9, -999);
            Assert.AreEqual(-999, v9, "#v9");

            uint v10 = 1;
            Volatile.Write(ref v10, uint.MaxValue);
            Assert.AreEqual(uint.MaxValue, v10, "#v10");

            var v11 = UIntPtr.Zero;
            Volatile.Write(ref v11, (UIntPtr)uint.MaxValue);
            Assert.AreEqual(new UIntPtr(uint.MaxValue), v11, "#v11");

            ulong v12 = 0;
            Volatile.Write(ref v12, ulong.MaxValue);
            Assert.AreEqual(ulong.MaxValue, v12, "#v12");

            ushort v13 = 1;
            Volatile.Write(ref v13, ushort.MaxValue);
            Assert.AreEqual(ushort.MaxValue, v13, "#v13");

            var s = "ABC";
            Volatile.Write(ref s, "DEF");
            Assert.AreEqual("DEF", s);
        }
    }
}