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.NET-Community-Toolkit/tests/CommunityToolkit.HighPerfor.../Memory/Test_ReadOnlyMemory2D{T}.cs

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// 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;
using System.Runtime.CompilerServices;
using Microsoft.VisualStudio.TestTools.UnitTesting;
namespace CommunityToolkit.HighPerformance.UnitTests;
/* ====================================================================
* NOTE
* ====================================================================
* All the tests here mirror the ones for Memory2D<T>, as the two types
* are basically the same except for some small differences in return types
* or some checks being done upon construction. See comments in the test
* file for Memory2D<T> for more info on these tests. */
[TestClass]
public class Test_ReadOnlyMemory2DT
{
[TestMethod]
public void Test_ReadOnlyMemory2DT_Empty()
{
ReadOnlyMemory2D<int> empty1 = default;
Assert.IsTrue(empty1.IsEmpty);
Assert.AreEqual(empty1.Length, 0);
Assert.AreEqual(empty1.Width, 0);
Assert.AreEqual(empty1.Height, 0);
ReadOnlyMemory2D<string> empty2 = ReadOnlyMemory2D<string>.Empty;
Assert.IsTrue(empty2.IsEmpty);
Assert.AreEqual(empty2.Length, 0);
Assert.AreEqual(empty2.Width, 0);
Assert.AreEqual(empty2.Height, 0);
}
[TestMethod]
public void Test_ReadOnlyMemory2DT_Array1DConstructor()
{
int[] array =
{
1, 2, 3, 4, 5, 6
};
ReadOnlyMemory2D<int> memory2d = new(array, 1, 2, 2, 1);
Assert.IsFalse(memory2d.IsEmpty);
Assert.AreEqual(memory2d.Length, 4);
Assert.AreEqual(memory2d.Width, 2);
Assert.AreEqual(memory2d.Height, 2);
Assert.AreEqual(memory2d.Span[0, 0], 2);
Assert.AreEqual(memory2d.Span[1, 1], 6);
// Here we check to ensure a covariant array conversion is allowed for ReadOnlyMemory2D<T>
_ = new ReadOnlyMemory2D<object>(new string[1], 1, 1);
_ = Assert.ThrowsException<ArgumentOutOfRangeException>(() => new ReadOnlyMemory2D<int>(array, -99, 1, 1, 1));
_ = Assert.ThrowsException<ArgumentOutOfRangeException>(() => new ReadOnlyMemory2D<int>(array, 0, -10, 1, 1));
_ = Assert.ThrowsException<ArgumentOutOfRangeException>(() => new ReadOnlyMemory2D<int>(array, 0, 1, 1, -1));
_ = Assert.ThrowsException<ArgumentOutOfRangeException>(() => new ReadOnlyMemory2D<int>(array, 0, 1, -100, 1));
_ = Assert.ThrowsException<ArgumentException>(() => new ReadOnlyMemory2D<int>(array, 0, 2, 4, 0));
_ = Assert.ThrowsException<ArgumentException>(() => new ReadOnlyMemory2D<int>(array, 0, 3, 3, 0));
_ = Assert.ThrowsException<ArgumentException>(() => new ReadOnlyMemory2D<int>(array, 1, 2, 3, 0));
_ = Assert.ThrowsException<ArgumentException>(() => new ReadOnlyMemory2D<int>(array, 0, 10, 1, 120));
}
[TestMethod]
public void Test_ReadOnlyMemory2DT_Array2DConstructor_1()
{
int[,] array =
{
{ 1, 2, 3 },
{ 4, 5, 6 }
};
ReadOnlyMemory2D<int> memory2d = new(array);
Assert.IsFalse(memory2d.IsEmpty);
Assert.AreEqual(memory2d.Length, 6);
Assert.AreEqual(memory2d.Width, 3);
Assert.AreEqual(memory2d.Height, 2);
Assert.AreEqual(memory2d.Span[0, 1], 2);
Assert.AreEqual(memory2d.Span[1, 2], 6);
_ = new ReadOnlyMemory2D<object>(new string[1, 2]);
}
[TestMethod]
public void Test_ReadOnlyMemory2DT_Array2DConstructor_2()
{
int[,] array =
{
{ 1, 2, 3 },
{ 4, 5, 6 }
};
ReadOnlyMemory2D<int> memory2d = new(array, 0, 1, 2, 2);
Assert.IsFalse(memory2d.IsEmpty);
Assert.AreEqual(memory2d.Length, 4);
Assert.AreEqual(memory2d.Width, 2);
Assert.AreEqual(memory2d.Height, 2);
Assert.AreEqual(memory2d.Span[0, 0], 2);
Assert.AreEqual(memory2d.Span[1, 1], 6);
_ = new ReadOnlyMemory2D<object>(new string[1, 2]);
_ = Assert.ThrowsException<ArgumentOutOfRangeException>(() => new ReadOnlyMemory2D<object>(new string[1, 2], 0, 0, 2, 2));
}
[TestMethod]
public void Test_ReadOnlyMemory2DT_Array3DConstructor_1()
{
int[,,] array =
{
{
{ 1, 2, 3 },
{ 4, 5, 6 }
},
{
{ 10, 20, 30 },
{ 40, 50, 60 }
}
};
ReadOnlyMemory2D<int> memory2d = new(array, 1);
Assert.IsFalse(memory2d.IsEmpty);
Assert.AreEqual(memory2d.Length, 6);
Assert.AreEqual(memory2d.Width, 3);
Assert.AreEqual(memory2d.Height, 2);
Assert.AreEqual(memory2d.Span[0, 1], 20);
Assert.AreEqual(memory2d.Span[1, 2], 60);
_ = Assert.ThrowsException<ArgumentOutOfRangeException>(() => new ReadOnlyMemory2D<int>(array, -1));
_ = Assert.ThrowsException<ArgumentOutOfRangeException>(() => new ReadOnlyMemory2D<int>(array, 20));
_ = Assert.ThrowsException<ArgumentOutOfRangeException>(() => new ReadOnlyMemory2D<int>(array, 2));
}
[TestMethod]
public void Test_ReadOnlyMemory2DT_Array3DConstructor_2()
{
int[,,] array =
{
{
{ 1, 2, 3 },
{ 4, 5, 6 }
},
{
{ 10, 20, 30 },
{ 40, 50, 60 }
}
};
ReadOnlyMemory2D<int> memory2d = new(array, 1, 0, 1, 2, 2);
Assert.IsFalse(memory2d.IsEmpty);
Assert.AreEqual(memory2d.Length, 4);
Assert.AreEqual(memory2d.Width, 2);
Assert.AreEqual(memory2d.Height, 2);
Assert.AreEqual(memory2d.Span[0, 0], 20);
Assert.AreEqual(memory2d.Span[1, 1], 60);
_ = Assert.ThrowsException<ArgumentOutOfRangeException>(() => new ReadOnlyMemory2D<int>(array, -1, 1, 1, 1, 1));
_ = Assert.ThrowsException<ArgumentOutOfRangeException>(() => new ReadOnlyMemory2D<int>(array, 1, -1, 1, 1, 1));
_ = Assert.ThrowsException<ArgumentOutOfRangeException>(() => new ReadOnlyMemory2D<int>(array, 1, 1, -1, 1, 1));
_ = Assert.ThrowsException<ArgumentOutOfRangeException>(() => new ReadOnlyMemory2D<int>(array, 1, 1, 1, -1, 1));
_ = Assert.ThrowsException<ArgumentOutOfRangeException>(() => new ReadOnlyMemory2D<int>(array, 1, 1, 1, 1, -1));
_ = Assert.ThrowsException<ArgumentOutOfRangeException>(() => new ReadOnlyMemory2D<int>(array, 2, 0, 0, 2, 3));
_ = Assert.ThrowsException<ArgumentOutOfRangeException>(() => new ReadOnlyMemory2D<int>(array, 0, 0, 1, 2, 3));
_ = Assert.ThrowsException<ArgumentOutOfRangeException>(() => new ReadOnlyMemory2D<int>(array, 0, 0, 0, 2, 4));
_ = Assert.ThrowsException<ArgumentOutOfRangeException>(() => new ReadOnlyMemory2D<int>(array, 0, 0, 0, 3, 3));
}
#if NETCOREAPP
[TestMethod]
public void Test_ReadOnlyMemory2DT_ReadOnlyMemoryConstructor()
{
ReadOnlyMemory<int> memory = new[]
{
1, 2, 3, 4, 5, 6
};
ReadOnlyMemory2D<int> memory2d = memory.AsMemory2D(1, 2, 2, 1);
Assert.IsFalse(memory2d.IsEmpty);
Assert.AreEqual(memory2d.Length, 4);
Assert.AreEqual(memory2d.Width, 2);
Assert.AreEqual(memory2d.Height, 2);
Assert.AreEqual(memory2d.Span[0, 0], 2);
Assert.AreEqual(memory2d.Span[1, 1], 6);
_ = Assert.ThrowsException<ArgumentOutOfRangeException>(() => memory.AsMemory2D(-99, 1, 1, 1));
_ = Assert.ThrowsException<ArgumentOutOfRangeException>(() => memory.AsMemory2D(0, -10, 1, 1));
_ = Assert.ThrowsException<ArgumentOutOfRangeException>(() => memory.AsMemory2D(0, 1, 1, -1));
_ = Assert.ThrowsException<ArgumentOutOfRangeException>(() => memory.AsMemory2D(0, 1, -100, 1));
_ = Assert.ThrowsException<ArgumentException>(() => memory.AsMemory2D(0, 2, 4, 0));
_ = Assert.ThrowsException<ArgumentException>(() => memory.AsMemory2D(0, 3, 3, 0));
_ = Assert.ThrowsException<ArgumentException>(() => memory.AsMemory2D(1, 2, 3, 0));
_ = Assert.ThrowsException<ArgumentException>(() => memory.AsMemory2D(0, 10, 1, 120));
}
#endif
[TestMethod]
public void Test_ReadOnlyMemory2DT_Slice_1()
{
int[,] array =
{
{ 1, 2, 3 },
{ 4, 5, 6 }
};
ReadOnlyMemory2D<int> memory2d = new(array);
ReadOnlyMemory2D<int> slice1 = memory2d.Slice(1, 1, 1, 2);
Assert.AreEqual(slice1.Length, 2);
Assert.AreEqual(slice1.Height, 1);
Assert.AreEqual(slice1.Width, 2);
Assert.AreEqual(slice1.Span[0, 0], 5);
Assert.AreEqual(slice1.Span[0, 1], 6);
ReadOnlyMemory2D<int> slice2 = memory2d.Slice(0, 1, 2, 2);
Assert.AreEqual(slice2.Length, 4);
Assert.AreEqual(slice2.Height, 2);
Assert.AreEqual(slice2.Width, 2);
Assert.AreEqual(slice2.Span[0, 0], 2);
Assert.AreEqual(slice2.Span[1, 0], 5);
Assert.AreEqual(slice2.Span[1, 1], 6);
_ = Assert.ThrowsException<ArgumentOutOfRangeException>(() => new ReadOnlyMemory2D<int>(array).Slice(-1, 1, 1, 1));
_ = Assert.ThrowsException<ArgumentOutOfRangeException>(() => new ReadOnlyMemory2D<int>(array).Slice(1, -1, 1, 1));
_ = Assert.ThrowsException<ArgumentOutOfRangeException>(() => new ReadOnlyMemory2D<int>(array).Slice(1, 1, 1, -1));
_ = Assert.ThrowsException<ArgumentOutOfRangeException>(() => new ReadOnlyMemory2D<int>(array).Slice(1, 1, -1, 1));
_ = Assert.ThrowsException<ArgumentOutOfRangeException>(() => new ReadOnlyMemory2D<int>(array).Slice(10, 1, 1, 1));
_ = Assert.ThrowsException<ArgumentOutOfRangeException>(() => new ReadOnlyMemory2D<int>(array).Slice(1, 12, 1, 12));
_ = Assert.ThrowsException<ArgumentOutOfRangeException>(() => new ReadOnlyMemory2D<int>(array).Slice(1, 1, 55, 1));
_ = Assert.ThrowsException<ArgumentOutOfRangeException>(() => new ReadOnlyMemory2D<int>(array).Slice(0, 0, 2, 4));
_ = Assert.ThrowsException<ArgumentOutOfRangeException>(() => new ReadOnlyMemory2D<int>(array).Slice(0, 0, 3, 3));
_ = Assert.ThrowsException<ArgumentOutOfRangeException>(() => new ReadOnlyMemory2D<int>(array).Slice(0, 1, 2, 3));
_ = Assert.ThrowsException<ArgumentOutOfRangeException>(() => new ReadOnlyMemory2D<int>(array).Slice(1, 0, 2, 3));
}
[TestMethod]
public void Test_ReadOnlyMemory2DT_Slice_2()
{
int[,] array =
{
{ 1, 2, 3 },
{ 4, 5, 6 }
};
ReadOnlyMemory2D<int> memory2d = new(array);
ReadOnlyMemory2D<int> slice1 = memory2d.Slice(0, 0, 2, 2);
Assert.AreEqual(slice1.Length, 4);
Assert.AreEqual(slice1.Height, 2);
Assert.AreEqual(slice1.Width, 2);
Assert.AreEqual(slice1.Span[0, 0], 1);
Assert.AreEqual(slice1.Span[1, 1], 5);
ReadOnlyMemory2D<int> slice2 = slice1.Slice(1, 0, 1, 2);
Assert.AreEqual(slice2.Length, 2);
Assert.AreEqual(slice2.Height, 1);
Assert.AreEqual(slice2.Width, 2);
Assert.AreEqual(slice2.Span[0, 0], 4);
Assert.AreEqual(slice2.Span[0, 1], 5);
ReadOnlyMemory2D<int> slice3 = slice2.Slice(0, 1, 1, 1);
Assert.AreEqual(slice3.Length, 1);
Assert.AreEqual(slice3.Height, 1);
Assert.AreEqual(slice3.Width, 1);
Assert.AreEqual(slice3.Span[0, 0], 5);
}
[TestMethod]
public void Test_ReadOnlyMemory2DT_TryGetReadOnlyMemory_1()
{
int[,] array =
{
{ 1, 2, 3 },
{ 4, 5, 6 }
};
ReadOnlyMemory2D<int> memory2d = new(array);
bool success = memory2d.TryGetMemory(out ReadOnlyMemory<int> memory);
#if NETFRAMEWORK
Assert.IsFalse(success);
Assert.IsTrue(memory.IsEmpty);
#else
Assert.IsTrue(success);
Assert.AreEqual(memory.Length, array.Length);
Assert.IsTrue(Unsafe.AreSame(ref array[0, 0], ref Unsafe.AsRef(memory.Span[0])));
#endif
}
[TestMethod]
public void Test_ReadOnlyMemory2DT_TryGetReadOnlyMemory_2()
{
int[] array = { 1, 2, 3, 4 };
ReadOnlyMemory2D<int> memory2d = new(array, 2, 2);
bool success = memory2d.TryGetMemory(out ReadOnlyMemory<int> memory);
Assert.IsTrue(success);
Assert.AreEqual(memory.Length, array.Length);
Assert.AreEqual(memory.Span[2], 3);
}
#if NETCOREAPP
[TestMethod]
public void Test_ReadOnlyMemory2DT_TryGetReadOnlyMemory_3()
{
ReadOnlyMemory<int> data = new[] { 1, 2, 3, 4 };
ReadOnlyMemory2D<int> memory2d = data.AsMemory2D(2, 2);
bool success = memory2d.TryGetMemory(out ReadOnlyMemory<int> memory);
Assert.IsTrue(success);
Assert.AreEqual(memory.Length, data.Length);
Assert.AreEqual(memory.Span[2], 3);
}
#endif
[TestMethod]
public unsafe void Test_ReadOnlyMemory2DT_Pin_1()
{
int[] array = { 1, 2, 3, 4 };
ReadOnlyMemory2D<int> memory2d = new(array, 2, 2);
using System.Buffers.MemoryHandle pin = memory2d.Pin();
Assert.AreEqual(((int*)pin.Pointer)[0], 1);
Assert.AreEqual(((int*)pin.Pointer)[3], 4);
}
[TestMethod]
public unsafe void Test_ReadOnlyMemory2DT_Pin_2()
{
int[] array = { 1, 2, 3, 4 };
ReadOnlyMemory2D<int> memory2d = new(array, 2, 2);
using System.Buffers.MemoryHandle pin = memory2d.Pin();
Assert.AreEqual(((int*)pin.Pointer)[0], 1);
Assert.AreEqual(((int*)pin.Pointer)[3], 4);
}
[TestMethod]
public void Test_ReadOnlyMemory2DT_ToArray_1()
{
int[,] array =
{
{ 1, 2, 3 },
{ 4, 5, 6 }
};
ReadOnlyMemory2D<int> memory2d = new(array);
int[,] copy = memory2d.ToArray();
Assert.AreEqual(copy.GetLength(0), array.GetLength(0));
Assert.AreEqual(copy.GetLength(1), array.GetLength(1));
CollectionAssert.AreEqual(array, copy);
}
[TestMethod]
public void Test_ReadOnlyMemory2DT_ToArray_2()
{
int[,] array =
{
{ 1, 2, 3 },
{ 4, 5, 6 }
};
ReadOnlyMemory2D<int> memory2d = new(array, 0, 0, 2, 2);
int[,] copy = memory2d.ToArray();
Assert.AreEqual(copy.GetLength(0), 2);
Assert.AreEqual(copy.GetLength(1), 2);
int[,] expected =
{
{ 1, 2 },
{ 4, 5 }
};
CollectionAssert.AreEqual(expected, copy);
}
[TestMethod]
public void Test_ReadOnlyMemory2DT_Equals()
{
int[,] array =
{
{ 1, 2, 3 },
{ 4, 5, 6 }
};
ReadOnlyMemory2D<int> readOnlyMemory2D = new(array);
Assert.IsFalse(readOnlyMemory2D.Equals(null));
Assert.IsFalse(readOnlyMemory2D.Equals(new ReadOnlyMemory2D<int>(array, 0, 1, 2, 2)));
Assert.IsTrue(readOnlyMemory2D.Equals(new ReadOnlyMemory2D<int>(array)));
Assert.IsTrue(readOnlyMemory2D.Equals(readOnlyMemory2D));
Memory2D<int> memory2d = array;
Assert.IsTrue(readOnlyMemory2D.Equals((object)memory2d));
Assert.IsFalse(readOnlyMemory2D.Equals((object)memory2d.Slice(0, 1, 2, 2)));
}
[TestMethod]
public void Test_ReadOnlyMemory2DT_GetHashCode()
{
Assert.AreEqual(ReadOnlyMemory2D<int>.Empty.GetHashCode(), 0);
int[,] array =
{
{ 1, 2, 3 },
{ 4, 5, 6 }
};
ReadOnlyMemory2D<int> memory2d = new(array);
int a = memory2d.GetHashCode();
int b = memory2d.GetHashCode();
Assert.AreEqual(a, b);
int c = new ReadOnlyMemory2D<int>(array, 0, 1, 2, 2).GetHashCode();
Assert.AreNotEqual(a, c);
}
[TestMethod]
public void Test_ReadOnlyMemory2DT_ToString()
{
int[,] array =
{
{ 1, 2, 3 },
{ 4, 5, 6 }
};
ReadOnlyMemory2D<int> memory2d = new(array);
string text = memory2d.ToString();
const string expected = "CommunityToolkit.HighPerformance.ReadOnlyMemory2D<System.Int32>[2, 3]";
Assert.AreEqual(text, expected);
}
}
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