public void UnsafeObjectStream_Reserve_ReservesSpaceForObject()
{
var stream = new UnsafeObjectStream();
stream.AcquirePointers();
try
{
unsafe
{
stream.Reserve(sizeof(UnsafeObjectTypeOne));
*(UnsafeObjectTypeOne*)stream.Data = new UnsafeObjectTypeOne() { ObjectType = UnsafeObjectType.TypeOne, Value1 = 123 };
stream.FinalizeObject(sizeof(UnsafeObjectTypeOne));
stream.Reserve(sizeof(UnsafeObjectTypeTwo));
*(UnsafeObjectTypeTwo*)stream.Data = new UnsafeObjectTypeTwo() { ObjectType = UnsafeObjectType.TypeTwo, Value1 = 234, Value2 = 345 };
stream.FinalizeObject(sizeof(UnsafeObjectTypeTwo));
TheResultingValue(stream.LengthInBytes).ShouldBe(sizeof(UnsafeObjectTypeOne) + sizeof(UnsafeObjectTypeTwo));
TheResultingValue(stream.LengthInObjects).ShouldBe(2);
var objData0 = stream.SeekObject(0);
var objType0 = *(UnsafeObjectType*)objData0;
TheResultingValue(objType0).ShouldBe(UnsafeObjectType.TypeOne);
var objTypeOne = *(UnsafeObjectTypeOne*)objData0;
TheResultingValue(objTypeOne.Value1).ShouldBe(123);
var objData1 = stream.SeekObject(1);
var objType1 = *(UnsafeObjectType*)objData1;
TheResultingValue(objType1).ShouldBe(UnsafeObjectType.TypeTwo);
var objTypeTwo = *(UnsafeObjectTypeTwo*)objData1;
TheResultingValue(objTypeTwo.Value1).ShouldBe(234);
TheResultingValue(objTypeTwo.Value2).ShouldBe(345);
}
}
finally
{
stream.ReleasePointers();
}
}
public void UnsafeObjectStream_Reserve_ThrowsException_WhenReservingDataBeforeEndOfStream()
{
var stream = new UnsafeObjectStream();
try
{
unsafe
{
stream.Reserve(sizeof(UnsafeObjectTypeOne));
stream.FinalizeObject(sizeof(UnsafeObjectTypeOne));
stream.Reserve(sizeof(UnsafeObjectTypeOne));
stream.FinalizeObject(sizeof(UnsafeObjectTypeOne));
stream.SeekBeginning();
stream.Reserve(sizeof(UnsafeObjectTypeOne));
}
}
finally
{
stream.ReleasePointers();
}
}
public void UnsafeObjectStream_Reserve_ThrowsException_WhenReservingDataBeforeEndOfStream()
{
var stream = new UnsafeObjectStream();
stream.AcquirePointers();
try
{
unsafe
{
stream.Reserve(sizeof(UnsafeObjectTypeOne));
stream.FinalizeObject(sizeof(UnsafeObjectTypeOne));
stream.Reserve(sizeof(UnsafeObjectTypeOne));
stream.FinalizeObject(sizeof(UnsafeObjectTypeOne));
stream.SeekBeginning();
Assert.That(() => stream.Reserve(sizeof(UnsafeObjectTypeOne)),
Throws.TypeOf<InvalidOperationException>());
}
}
finally
{
stream.ReleasePointers();
}
}
