Added unit tests

Author: Sergio0694

UnitTests/UnitTests.HighPerformance.Shared/Enumerables/Test_ReadOnlyRefEnumerable{T}.cs

@@ -0,0 +1,53 @@
+// 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.
+
+#if !WINDOWS_UWP
+
+using System;
+using System.Runtime.CompilerServices;
+using Microsoft.Toolkit.HighPerformance.Enumerables;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace UnitTests.HighPerformance.Enumerables
+{
+    [TestClass]
+    public class Test_ReadOnlyRefEnumerable
+    {
+        [TestCategory("ReadOnlyRefEnumerable")]
+        [TestMethod]
+        [DataRow(1, 1, new[] { 1 })]
+        [DataRow(4, 1, new[] { 1, 2, 3, 4 })]
+        [DataRow(4, 4, new[] { 1, 5, 9, 13 })]
+        [DataRow(4, 5, new[] { 1, 6, 11, 16 })]
+        public void Test_ReadOnlyRefEnumerable_DangerousCreate_Ok(int length, int step, int[] values)
+        {
+            Span<int> data = new[]
+            {
+                1, 2, 3, 4,
+                5, 6, 7, 8,
+                9, 10, 11, 12,
+                13, 14, 15, 16
+            };
+
+            ReadOnlyRefEnumerable<int> enumerable = ReadOnlyRefEnumerable<int>.DangerousCreate(in data[0], length, step);
+
+            int[] result = enumerable.ToArray();
+
+            CollectionAssert.AreEqual(result, values);
+        }
+
+        [TestCategory("ReadOnlyRefEnumerable")]
+        [TestMethod]
+        [DataRow(-44, 10)]
+        [DataRow(10, -14)]
+        [DataRow(-32, -1)]
+        [ExpectedException(typeof(ArgumentOutOfRangeException))]
+        public void Test_ReadOnlyRefEnumerable_DangerousCreate_BelowZero(int length, int step)
+        {
+            _ = ReadOnlyRefEnumerable<int>.DangerousCreate(in Unsafe.NullRef<int>(), length, step);
+        }
+    }
+}
+
+#endif

UnitTests/UnitTests.HighPerformance.Shared/Enumerables/Test_RefEnumerable{T}.cs

@@ -0,0 +1,53 @@
+// 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.
+
+#if !WINDOWS_UWP
+
+using System;
+using System.Runtime.CompilerServices;
+using Microsoft.Toolkit.HighPerformance.Enumerables;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace UnitTests.HighPerformance.Enumerables
+{
+    [TestClass]
+    public class Test_RefEnumerable
+    {
+        [TestCategory("RefEnumerable")]
+        [TestMethod]
+        [DataRow(1, 1, new[] { 1 })]
+        [DataRow(4, 1, new[] { 1, 2, 3, 4 })]
+        [DataRow(4, 4, new[] { 1, 5, 9, 13 })]
+        [DataRow(4, 5, new[] { 1, 6, 11, 16 })]
+        public void Test_RefEnumerable_DangerousCreate_Ok(int length, int step, int[] values)
+        {
+            Span<int> data = new[]
+            {
+                1, 2, 3, 4,
+                5, 6, 7, 8,
+                9, 10, 11, 12,
+                13, 14, 15, 16
+            };
+
+            RefEnumerable<int> enumerable = RefEnumerable<int>.DangerousCreate(ref data[0], length, step);
+
+            int[] result = enumerable.ToArray();
+
+            CollectionAssert.AreEqual(result, values);
+        }
+
+        [TestCategory("RefEnumerable")]
+        [TestMethod]
+        [DataRow(-44, 10)]
+        [DataRow(10, -14)]
+        [DataRow(-32, -1)]
+        [ExpectedException(typeof(ArgumentOutOfRangeException))]
+        public void Test_RefEnumerable_DangerousCreate_BelowZero(int length, int step)
+        {
+            _ = RefEnumerable<int>.DangerousCreate(ref Unsafe.NullRef<int>(), length, step);
+        }
+    }
+}
+
+#endif

UnitTests/UnitTests.HighPerformance.Shared/UnitTests.HighPerformance.Shared.projitems

@@ -16,6 +16,8 @@
     <Compile Include="$(MSBuildThisFileDirectory)Buffers\Test_StringPool.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Buffers\Test_SpanOwner{T}.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Buffers\TrackingArrayPool{T}.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)Enumerables\Test_ReadOnlyRefEnumerable{T}.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)Enumerables\Test_RefEnumerable{T}.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Extensions\Test_ArrayExtensions.3D.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Extensions\Test_ArrayExtensions.2D.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Extensions\Test_ArrayExtensions.1D.cs" />