90 lines
2.7 KiB
C#
90 lines
2.7 KiB
C#
// Licensed to the .NET Foundation under one or more agreements.
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// The .NET Foundation licenses this file to you under the MIT license.
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// See the LICENSE file in the project root for more information.
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#if NET6_0_OR_GREATER
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using System;
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using System.Numerics;
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using System.Runtime.CompilerServices;
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using Microsoft.VisualStudio.TestTools.UnitTesting;
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namespace CommunityToolkit.HighPerformance.UnitTests.Extensions;
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[TestClass]
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public class Test_NullableExtensions
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{
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[TestMethod]
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public void Test_NullableExtensions_DangerousGetValueOrDefaultReference()
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{
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static void Test<T>(T before, T after)
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where T : struct
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{
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T? nullable = before;
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ref T reference = ref nullable.DangerousGetValueOrDefaultReference();
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Assert.AreEqual(nullable!.Value, before);
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reference = after;
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Assert.AreEqual(nullable.Value, after);
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}
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Test(0, 42);
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Test(1.3f, 3.14f);
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Test(0.555, 8.49);
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Test(Vector4.Zero, new Vector4(1, 5.55f, 2, 3.14f));
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Test(Matrix4x4.Identity, Matrix4x4.CreateOrthographic(35, 88.34f, 9.99f, 24.6f));
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Test(new[] { 1, 2 }.AsMemory(), new[] { 3, 4 }.AsMemory());
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Test(new[] { "a", "b" }.AsMemory(), new[] { "c", "d" }.AsMemory());
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}
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[TestMethod]
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public void Test_NullableExtensions_DangerousGetValueOrNullReference_HasValue()
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{
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static void Test<T>(T before, T after)
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where T : struct
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{
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T? nullable = before;
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ref T reference = ref nullable.DangerousGetValueOrNullReference();
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Assert.IsFalse(Unsafe.IsNullRef(ref reference));
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Assert.AreEqual(nullable!.Value, before);
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reference = after;
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Assert.AreEqual(nullable.Value, after);
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}
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Test(0, 42);
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Test(1.3f, 3.14f);
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Test(0.555, 8.49);
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Test(Vector4.Zero, new Vector4(1, 5.55f, 2, 3.14f));
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Test(Matrix4x4.Identity, Matrix4x4.CreateOrthographic(35, 88.34f, 9.99f, 24.6f));
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Test(new[] { 1, 2 }.AsMemory(), new[] { 3, 4 }.AsMemory());
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Test(new[] { "a", "b" }.AsMemory(), new[] { "c", "d" }.AsMemory());
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}
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[TestMethod]
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public void Test_NullableExtensions_DangerousGetValueOrNullReference_IsNull()
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{
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static void Test<T>()
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where T : struct
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{
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T? nullable = null;
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ref T reference = ref nullable.DangerousGetValueOrNullReference();
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Assert.IsTrue(Unsafe.IsNullRef(ref reference));
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}
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Test<int>();
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Test<float>();
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Test<double>();
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Test<Vector4>();
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Test<Matrix4x4>();
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Test<Memory<int>>();
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Test<Memory<string>>();
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}
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}
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#endif |