98 lines
3.0 KiB
C#
98 lines
3.0 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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using System;
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using Microsoft.VisualStudio.TestTools.UnitTesting;
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namespace CommunityToolkit.HighPerformance.UnitTests;
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[TestClass]
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public class Test_BoxOfT
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{
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[TestMethod]
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public void Test_BoxOfT_PrimitiveTypes()
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{
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Test(true, false);
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Test<byte>(27, 254);
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Test('a', '$');
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Test(4221124, 1241241);
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Test(3.14f, 2342.222f);
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Test(8394324ul, 1343431241ul);
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Test(184013.234324, 14124.23423);
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}
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[TestMethod]
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public void Test_BoxOfT_OtherTypes()
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{
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Test(DateTime.Now, DateTime.FromBinary(278091429014));
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Test(Guid.NewGuid(), Guid.NewGuid());
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}
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internal struct TestStruct : IEquatable<TestStruct>
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{
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public int Number;
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public char Character;
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public string Text;
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/// <inheritdoc/>
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public bool Equals(TestStruct other)
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{
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return
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this.Number == other.Number &&
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this.Character == other.Character &&
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this.Text == other.Text;
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}
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}
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[TestMethod]
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public void TestBoxOfT_CustomStruct()
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{
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TestStruct a = new() { Number = 42, Character = 'a', Text = "Hello" };
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TestStruct b = new() { Number = 38293, Character = 'z', Text = "World" };
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Test(a, b);
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}
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/// <summary>
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/// Tests the <see cref="Box{T}"/> type for a given pair of values.
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/// </summary>
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/// <typeparam name="T">The type to test.</typeparam>
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/// <param name="value">The initial <typeparamref name="T"/> value.</param>
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/// <param name="test">The new <typeparamref name="T"/> value to assign and test.</param>
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private static void Test<T>(T value, T test)
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where T : struct, IEquatable<T>
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{
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Box<T>? box = value;
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Assert.AreEqual(box.GetReference(), value);
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Assert.AreEqual(box.ToString(), value.ToString());
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Assert.AreEqual(box.GetHashCode(), value.GetHashCode());
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object obj = value;
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bool success = Box<T>.TryGetFrom(obj, out box);
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Assert.IsTrue(success);
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Assert.IsTrue(ReferenceEquals(obj, box));
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Assert.IsNotNull(box);
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Assert.AreEqual(box.GetReference(), value);
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Assert.AreEqual(box.ToString(), value.ToString());
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Assert.AreEqual(box.GetHashCode(), value.GetHashCode());
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box = Box<T>.DangerousGetFrom(obj);
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Assert.IsTrue(ReferenceEquals(obj, box));
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Assert.AreEqual(box.GetReference(), value);
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Assert.AreEqual(box.ToString(), value.ToString());
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Assert.AreEqual(box.GetHashCode(), value.GetHashCode());
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box.GetReference() = test;
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Assert.AreEqual(box.GetReference(), test);
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Assert.AreEqual(box.ToString(), test.ToString());
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Assert.AreEqual(box.GetHashCode(), test.GetHashCode());
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Assert.AreEqual(obj, test);
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}
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}
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