dotnet/UnitTests/UnitTests.HighPerformance.Shared/Extensions/Test_ArrayExtensions.3D.cs

// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.

using System.Runtime.CompilerServices;
using Microsoft.Toolkit.HighPerformance;
using Microsoft.VisualStudio.TestTools.UnitTesting;

namespace UnitTests.HighPerformance.Extensions
{
    public partial class Test_ArrayExtensions
    {
        [TestCategory("ArrayExtensions")]
        [TestMethod]
        public void Test_ArrayExtensions_3D_DangerousGetReference_Int()
        {
            int[,,] array = new int[10, 20, 12];

            // See comments in Test_ArrayExtensions.1D for how these tests work
            ref int r0 = ref array.DangerousGetReference();
            ref int r1 = ref array[0, 0, 0];

            Assert.IsTrue(Unsafe.AreSame(ref r0, ref r1));
        }

        [TestCategory("ArrayExtensions")]
        [TestMethod]
        public void Test_ArrayExtensions_3D_DangerousGetReference_String()
        {
            string[,,] array = new string[10, 20, 12];

            ref string r0 = ref array.DangerousGetReference();
            ref string r1 = ref array[0, 0, 0];

            Assert.IsTrue(Unsafe.AreSame(ref r0, ref r1));
        }

        [TestCategory("ArrayExtensions")]
        [TestMethod]
        public void Test_ArrayExtensions_3D_DangerousGetReferenceAt_Zero()
        {
            int[,,] array = new int[10, 20, 12];

            ref int r0 = ref array.DangerousGetReferenceAt(0, 0, 0);
            ref int r1 = ref array[0, 0, 0];

            Assert.IsTrue(Unsafe.AreSame(ref r0, ref r1));
        }

        [TestCategory("ArrayExtensions")]
        [TestMethod]
        public void Test_ArrayExtensions_3D_DangerousGetReferenceAt_Index()
        {
            int[,,] array = new int[10, 20, 12];

            ref int r0 = ref array.DangerousGetReferenceAt(5, 3, 4);
            ref int r1 = ref array[5, 3, 4];

            Assert.IsTrue(Unsafe.AreSame(ref r0, ref r1));
        }
    }
}