276 lines
9.0 KiB
C#
276 lines
9.0 KiB
C#
using System;
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using NUnit.Framework;
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using Unity.Collections;
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using Unity.Collections.LowLevel.Unsafe;
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using Unity.Collections.Tests;
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using Unity.Mathematics;
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[TestFixture]
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internal class UnsafeUtilityTests : CollectionsTestCommonBase
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{
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#pragma warning disable 649
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struct DummyVec
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{
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public uint A, B, C, D;
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}
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#pragma warning restore
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private NativeArray<T> MakeTestArray<T>(params T[] data)
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where T : unmanaged
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{
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return CollectionHelper.CreateNativeArray<T>(data, CommonRwdAllocator.Handle);
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}
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[Test]
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public void ReinterpretUIntFloat()
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{
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using (var src = MakeTestArray(1.0f, 2.0f, 3.0f))
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{
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var dst = src.Reinterpret<float, uint>();
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Assert.AreEqual(src.Length, dst.Length);
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Assert.AreEqual(0x3f800000u, dst[0]);
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Assert.AreEqual(0x40000000u, dst[1]);
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Assert.AreEqual(0x40400000u, dst[2]);
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}
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}
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[Test]
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public void ReinterpretUInt4Float()
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{
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using (var src = MakeTestArray(1.0f, 2.0f, 3.0f, -1.0f))
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{
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var dst = src.Reinterpret<float, DummyVec>();
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Assert.AreEqual(1, dst.Length);
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var e = dst[0];
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Assert.AreEqual(0x3f800000u, e.A);
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Assert.AreEqual(0x40000000u, e.B);
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Assert.AreEqual(0x40400000u, e.C);
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Assert.AreEqual(0xbf800000u, e.D);
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}
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}
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[Test]
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public void ReinterpretFloatUint4()
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{
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var dummies = new DummyVec[]
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{
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new DummyVec { A = 0x3f800000u, B = 0x40000000u, C = 0x40400000u, D = 0xbf800000u },
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new DummyVec { A = 0xbf800000u, B = 0xc0000000u, C = 0xc0400000u, D = 0x3f800000u },
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};
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using (var src = MakeTestArray(dummies))
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{
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var dst = src.Reinterpret<DummyVec, float>();
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Assert.AreEqual(8, dst.Length);
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Assert.AreEqual(1.0f, dst[0]);
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Assert.AreEqual(2.0f, dst[1]);
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Assert.AreEqual(3.0f, dst[2]);
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Assert.AreEqual(-1.0f, dst[3]);
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Assert.AreEqual(-1.0f, dst[4]);
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Assert.AreEqual(-2.0f, dst[5]);
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Assert.AreEqual(-3.0f, dst[6]);
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Assert.AreEqual(1.0f, dst[7]);
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}
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}
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[Test]
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[TestRequiresDotsDebugOrCollectionChecks]
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public void MismatchThrows1()
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{
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using (var src = MakeTestArray(0.0f, 1.0f, 2.0f))
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{
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Assert.Throws<InvalidOperationException>(() => src.Reinterpret<float, DummyVec>());
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}
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}
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[Test]
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[TestRequiresDotsDebugOrCollectionChecks]
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public void MismatchThrows2()
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{
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using (var src = MakeTestArray(12))
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{
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Assert.Throws<InvalidOperationException>(() => src.Reinterpret<int, double>());
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}
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}
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[Test]
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public void AliasCanBeDisposed()
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{
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using (var src = MakeTestArray(12))
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{
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using (var dst = src.Reinterpret<int, float>())
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{
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}
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}
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}
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[Test]
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[TestRequiresCollectionChecks]
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public void CannotUseAliasAfterSourceIsDisposed()
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{
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NativeArray<float> alias;
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var src = MakeTestArray(12);
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alias = src.Reinterpret<int, float>();
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// `Free` of memory allocated by world update allocator is an no-op.
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// World update allocator needs to be rewound in order to free the memory.
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CommonRwdAllocator.Rewind();
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Assert.Throws<ObjectDisposedException>(
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() => alias[0] = 1.0f);
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}
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[Test]
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public void MutabilityWorks()
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{
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using (var src = MakeTestArray(0.0f, -1.0f))
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{
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var alias = src.Reinterpret<float, uint>();
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alias[0] = 0x3f800000;
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Assert.AreEqual(1.0f, src[0]);
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Assert.AreEqual(-1.0f, src[1]);
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}
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}
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#pragma warning disable 0169 // field is never used
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struct AlignOfX
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{
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float x;
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bool y;
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}
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struct AlignOfY
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{
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float x;
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bool y;
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float z;
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bool w;
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}
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struct AlignOfZ
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{
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float4 x;
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bool y;
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}
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struct AlignOfW
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{
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float4 x;
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bool y;
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float4x4 z;
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bool w;
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}
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struct BoolLong
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{
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bool x;
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long y;
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}
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struct BoolPtr
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{
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bool x;
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unsafe void* y;
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}
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#pragma warning restore 0169 // field is never used
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[Test]
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public void UnsafeUtility_AlignOf()
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{
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Assert.AreEqual(UnsafeUtility.SizeOf<byte>(), UnsafeUtility.AlignOf<byte>());
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Assert.AreEqual(UnsafeUtility.SizeOf<short>(), UnsafeUtility.AlignOf<short>());
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Assert.AreEqual(UnsafeUtility.SizeOf<ushort>(), UnsafeUtility.AlignOf<ushort>());
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Assert.AreEqual(UnsafeUtility.SizeOf<int>(), UnsafeUtility.AlignOf<int>());
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Assert.AreEqual(UnsafeUtility.SizeOf<uint>(), UnsafeUtility.AlignOf<uint>());
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Assert.AreEqual(UnsafeUtility.SizeOf<long>(), UnsafeUtility.AlignOf<long>());
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Assert.AreEqual(UnsafeUtility.SizeOf<ulong>(), UnsafeUtility.AlignOf<ulong>());
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Assert.AreEqual(4, UnsafeUtility.AlignOf<float4>());
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Assert.AreEqual(4, UnsafeUtility.AlignOf<AlignOfX>());
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Assert.AreEqual(4, UnsafeUtility.AlignOf<AlignOfY>());
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Assert.AreEqual(4, UnsafeUtility.AlignOf<AlignOfZ>());
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Assert.AreEqual(4, UnsafeUtility.AlignOf<AlignOfW>());
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Assert.AreEqual(8, UnsafeUtility.AlignOf<BoolLong>());
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Assert.AreEqual(UnsafeUtility.SizeOf<IntPtr>(), UnsafeUtility.AlignOf<BoolPtr>());
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}
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[Test]
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public unsafe void UnsafeUtility_MemSwap()
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{
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using (var array0 = MakeTestArray(0x12345678, 0x12345678, 0x12345678, 0x12345678, 0x12345678, 0x12345678))
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using (var array1 = MakeTestArray(0x21436587, 0x21436587, 0x21436587, 0x21436587, 0x21436587, 0x21436587))
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{
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UnsafeUtilityExtensions.MemSwap(NativeArrayUnsafeUtility.GetUnsafePtr(array0), NativeArrayUnsafeUtility.GetUnsafePtr(array1), array0.Length*UnsafeUtility.SizeOf<int>());
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foreach (var b in array0) { Assert.AreEqual(0x21436587, b); }
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foreach (var b in array1) { Assert.AreEqual(0x12345678, b); }
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}
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}
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[Test]
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[TestRequiresCollectionChecks]
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public unsafe void UnsafeUtility_MemSwap_DoesThrow_Overlapped()
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{
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using (var array0 = MakeTestArray(0x12345678, 0x12345678, 0x12345678, 0x12345678, 0x12345678, 0x12345678))
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{
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var mem = (byte*)NativeArrayUnsafeUtility.GetUnsafePtr(array0);
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var len = array0.Length * UnsafeUtility.SizeOf<int>();
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Assert.DoesNotThrow(() => { UnsafeUtilityExtensions.MemSwap(mem + 10, mem, 10); });
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Assert.Throws<InvalidOperationException>(() => { UnsafeUtilityExtensions.MemSwap(mem + 10, mem, len - 10); });
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Assert.DoesNotThrow(() => { UnsafeUtilityExtensions.MemSwap(mem, mem + 10, 10); });
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Assert.Throws<InvalidOperationException>(() => { UnsafeUtilityExtensions.MemSwap(mem, mem + 10, len - 10); });
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}
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}
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[Test]
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[TestRequiresDotsDebugOrCollectionChecks]
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public unsafe void UnsafeUtility_ReadArrayElementBoundsChecked_Works()
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{
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using (var array0 = MakeTestArray(0x12345678, 0x12345678, 0x12345678, 0x12345678, 0x12345678, 0x12345678))
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{
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var mem = (byte*)NativeArrayUnsafeUtility.GetUnsafePtr(array0);
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var len = array0.Length;
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Assert.DoesNotThrow(() => { UnsafeUtilityExtensions.ReadArrayElementBoundsChecked<int>(mem, 5, len); });
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Assert.Throws<IndexOutOfRangeException>(() => { UnsafeUtilityExtensions.ReadArrayElementBoundsChecked<int>(mem, 6, len); });
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Assert.Throws<IndexOutOfRangeException>(() => { UnsafeUtilityExtensions.ReadArrayElementBoundsChecked<int>(mem, -1, len); });
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}
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}
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[Test]
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[TestRequiresDotsDebugOrCollectionChecks]
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public unsafe void UnsafeUtility_WriteArrayElementBoundsChecked_Works()
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{
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using (var array0 = MakeTestArray(0x12345678, 0x12345678, 0x12345678, 0x12345678, 0x12345678, 0x12345678))
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{
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var mem = (byte*)NativeArrayUnsafeUtility.GetUnsafePtr(array0);
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var len = array0.Length;
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Assert.DoesNotThrow(() => { UnsafeUtilityExtensions.WriteArrayElementBoundsChecked(mem, 5, -98765432, len); });
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Assert.Throws<IndexOutOfRangeException>(() => { UnsafeUtilityExtensions.WriteArrayElementBoundsChecked(mem, 6, -98765432, len); });
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Assert.Throws<IndexOutOfRangeException>(() => { UnsafeUtilityExtensions.WriteArrayElementBoundsChecked(mem, -1, -98765432, len); });
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}
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}
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[Test]
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public unsafe void UnsafeUtility_AsRefAddressOfIn_Works()
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{
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DummyVec thing = default;
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void* thingInPtr = UnsafeUtilityExtensions.AddressOf(in thing);
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ref DummyVec thingRef = ref UnsafeUtilityExtensions.AsRef(in thing);
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void* thingInRefPtr = UnsafeUtility.AddressOf(ref thingRef);
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void* thingRefPtr = UnsafeUtility.AddressOf(ref thing);
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void* thingPtr = &thing;
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Assert.AreEqual((IntPtr) thingPtr, (IntPtr) thingInPtr);
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Assert.AreEqual((IntPtr) thingPtr, (IntPtr) thingRefPtr);
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Assert.AreEqual((IntPtr) thingPtr, (IntPtr) thingInRefPtr);
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}
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}
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