public void WhenBothAreMemoryOwners_ShouldSwap()
{
MemorySource <int> a = this.AllocateMemorySource <int>(13);
MemorySource <int> b = this.AllocateMemorySource <int>(17);
IMemoryOwner <int> aa = a.MemoryOwner;
IMemoryOwner <int> bb = b.MemoryOwner;
Memory <int> aaa = a.Memory;
Memory <int> bbb = b.Memory;
MemorySource <int> .SwapOrCopyContent(ref a, ref b);
Assert.Equal(bb, a.MemoryOwner);
Assert.Equal(aa, b.MemoryOwner);
Assert.Equal(bbb, a.Memory);
Assert.Equal(aaa, b.Memory);
Assert.NotEqual(a.Memory, b.Memory);
}
public void WhenDestIsNotMemoryOwner_DifferentSize_Throws(bool sourceIsOwner)
{
var data = new Rgba32[21];
var color = new Rgba32(1, 2, 3, 4);
var destOwner = new TestMemoryManager <Rgba32>(data);
var dest = new MemorySource <Rgba32>(destOwner.Memory);
IMemoryOwner <Rgba32> sourceOwner = this.MemoryAllocator.Allocate <Rgba32>(22);
MemorySource <Rgba32> source = sourceIsOwner
? new MemorySource <Rgba32>(sourceOwner, true)
: new MemorySource <Rgba32>(sourceOwner.Memory);
sourceOwner.Memory.Span[10] = color;
// Act:
Assert.ThrowsAny <InvalidOperationException>(() => MemorySource <Rgba32> .SwapOrCopyContent(ref dest, ref source));
Assert.Equal(color, source.Memory.Span[10]);
Assert.NotEqual(color, dest.Memory.Span[10]);
}
public void WhenDestIsNotMemoryOwner_SameSize_ShouldCopy(bool sourceIsOwner, bool isInternalMemorySource)
{
var data = new Rgba32[21];
var color = new Rgba32(1, 2, 3, 4);
var destOwner = new TestMemoryManager <Rgba32>(data);
var dest = new MemorySource <Rgba32>(destOwner.Memory);
IMemoryOwner <Rgba32> sourceOwner = this.MemoryAllocator.Allocate <Rgba32>(21);
MemorySource <Rgba32> source = sourceIsOwner
? new MemorySource <Rgba32>(sourceOwner, isInternalMemorySource)
: new MemorySource <Rgba32>(sourceOwner.Memory);
sourceOwner.Memory.Span[10] = color;
// Act:
MemorySource <Rgba32> .SwapOrCopyContent(ref dest, ref source);
// Assert:
Assert.Equal(color, dest.Memory.Span[10]);
Assert.NotEqual(sourceOwner, dest.MemoryOwner);
Assert.NotEqual(destOwner, source.MemoryOwner);
}