// The following code was generated by Microsoft Visual Studio 2005.
// The test owner should check each test for validity.
using Microsoft.VisualStudio.TestTools.UnitTesting;
using System;
using System.Text;
using System.Collections.Generic;
using Virtuoso.Miranda.Plugins.Native;
using System.Runtime.InteropServices;
namespace Virtuoso.Miranda.Plugins.UnitTests
{
    /// <summary>
    ///This is a test class for Virtuoso.Miranda.Plugins.Native.UnmanagedStructHandle&lt;T&gt; and is intended
    ///to contain all Virtuoso.Miranda.Plugins.Native.UnmanagedStructHandle&lt;T&gt; Unit Tests
    ///</summary>
    [TestClass()]
    public class UnmanagedStructHandleTest
    {
        private TestContext testContextInstance;

        /// <summary>
        ///Gets or sets the test context which provides
        ///information about and functionality for the current test run.
        ///</summary>
        public TestContext TestContext
        {
            get
            {
                return testContextInstance;
            }
            set
            {
                testContextInstance = value;
            }
        }
        #region Additional test attributes
        // 
        //You can use the following additional attributes as you write your tests:
        //
        //Use ClassInitialize to run code before running the first test in the class
        //
        //[ClassInitialize()]
        //public static void MyClassInitialize(TestContext testContext)
        //{
        //}
        //
        //Use ClassCleanup to run code after all tests in a class have run
        //
        //[ClassCleanup()]
        //public static void MyClassCleanup()
        //{
        //}
        //
        //Use TestInitialize to run code before running each test
        //
        //[TestInitialize()]
        //public void MyTestInitialize()
        //{
        //}
        //
        //Use TestCleanup to run code after each test has run
        //
        //[TestCleanup()]
        //public void MyTestCleanup()
        //{
        //}
        //
        #endregion

        private const int TestDataValue = 100;
        private int TestData;
        private UnmanagedStructHandle<int> TestHandle;

        [TestInitialize]
        public void TestInitialize()
        {
            this.TestData = TestDataValue;
            this.TestHandle = new UnmanagedStructHandle<int>(ref this.TestData);
        }

        [TestCleanup]
        public void TestCleanup()
        {
            this.TestHandle.Free();
        }

        /// <summary>
        ///A test for Free ()
        ///</summary>
        [TestMethod()]
        public void FreeTest()
        {
            this.TestHandle.Free();
            Assert.AreEqual<IntPtr>(IntPtr.Zero, this.TestHandle.IntPtr, "Free method did not zeroed the memory handle.");

            this.TestHandle = UnmanagedStructHandle<int>.Empty;
            this.TestHandle.Free();

            IntPtr ptr = Marshal.AllocHGlobal(1);
            Marshal.StructureToPtr(0xac, ptr, false);

            this.TestHandle = new UnmanagedStructHandle<int>(ref this.TestData, ptr);
            this.TestHandle.Free();
            Assert.AreNotEqual<byte>(0xac, Marshal.ReadByte(ptr), "Free did not released the single-pressure.");

            ptr = Marshal.AllocHGlobal(1);
            Marshal.StructureToPtr(0xac, ptr, false);

            this.TestHandle = new UnmanagedStructHandle<int>(ref this.TestData, new IntPtr[] { ptr });
            this.TestHandle.Free();
            Assert.AreNotEqual<byte>(0xac, Marshal.ReadByte(ptr), "Free did not released the pressure.");
        }

        /// <summary>
        ///A test for implicit operator (UnmanagedStructHandle&lt;T&gt;)
        ///</summary>
        [TestMethod()]
        public void ConversionTest()
        {
            IntPtr intPtr = this.TestHandle;
            Assert.AreEqual<IntPtr>(this.TestHandle.IntPtr, intPtr, "Implicit conversion to IntPtr failed.");
        }

        /// <summary>
        ///A test for implicit operator (UnmanagedStructHandle&lt;T&gt;)
        ///</summary>
        [TestMethod()]
        public void ConversionTest1()
        {
            UIntPtr uintPtr = this.TestHandle;
            Assert.AreEqual<UIntPtr>(new UIntPtr((ulong)this.TestHandle.IntPtr.ToInt64()), uintPtr, "Implicit conversion to UIntPtr failed.");
        }

        [TestMethod]
        public void IntPtrTest()
        {
            this.TestHandle.Free();
            Assert.AreEqual<IntPtr>(IntPtr.Zero, this.TestHandle.IntPtr);
        }

        /// <summary>
        ///A test for MarshalBack (out T)
        ///</summary>
        [TestMethod()]
        public void MarshalBackTest()
        {
            // Value type test
            int newInt = -100;
            Marshal.StructureToPtr(newInt, this.TestHandle.IntPtr, false);

            int currentInt;
            this.TestHandle.MarshalBack(out currentInt);

            Assert.AreEqual<int>(newInt, currentInt, "MarshalBack method did not marshalled data back correctly.");
        }

        [TestMethod]
        public void CtorTest()
        {
            int i = 100;
            this.TestHandle = new UnmanagedStructHandle<int>(ref i, MarshalKind.Copy);

            Marshal.WriteInt32(this.TestHandle, -100);
            this.TestHandle.MarshalBack(out i);

            Assert.AreEqual<int>(-100, i, "Copy method does not work properly.");
            this.TestHandle.Free();

            i = 100;
            this.TestHandle = new UnmanagedStructHandle<int>(ref i, MarshalKind.PinBlittable);

            Marshal.WriteInt32(this.TestHandle, -100);
            this.TestHandle.MarshalBack(out i);

            Assert.AreEqual<int>(-100, i, "PinBlittable method does not work properly.");
            this.TestHandle.Free();
        }
    }
}