public void UnsafeObjectStream_RawSeekBackward_DoesNothing_WhenAtBeginningOfStream()
{
var stream = new UnsafeObjectStream();
stream.AcquirePointers();
try
{
unsafe
{
stream.ReserveMultiple(2, 2 * sizeof(UnsafeObjectTypeOne));
*(UnsafeObjectTypeOne*)stream.Data = new UnsafeObjectTypeOne() { ObjectType = UnsafeObjectType.TypeOne, Value1 = 123 };
stream.FinalizeObject(sizeof(UnsafeObjectTypeOne));
*(UnsafeObjectTypeOne*)stream.Data = new UnsafeObjectTypeOne() { ObjectType = UnsafeObjectType.TypeOne, Value1 = 234 };
stream.FinalizeObject(sizeof(UnsafeObjectTypeOne));
stream.RawSeekObject(0);
TheResultingValue(stream.PositionInBytes).ShouldBe(0);
TheResultingValue(stream.PositionInObjects).ShouldBe(0);
stream.SeekBackward();
TheResultingValue(stream.PositionInBytes).ShouldBe(0);
TheResultingValue(stream.PositionInObjects).ShouldBe(0);
}
}
finally
{
stream.ReleasePointers();
}
}
public void UnsafeObjectStream_ReserveMultiple_ReservesSpaceForMultipleObjects()
{
var stream = new UnsafeObjectStream();
stream.AcquirePointers();
try
{
unsafe
{
stream.ReserveMultiple(2, sizeof(UnsafeObjectTypeOne) + sizeof(UnsafeObjectTypeTwo));
*(UnsafeObjectTypeOne*)stream.Data = new UnsafeObjectTypeOne() { ObjectType = UnsafeObjectType.TypeOne, Value1 = 123 };
stream.FinalizeObject(sizeof(UnsafeObjectTypeOne));
*(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();
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();
}
}
public void UnsafeObjectStream_ReserveInsert_ReservesSpaceForMultipleObjects()
{
var stream = new UnsafeObjectStream();
stream.AcquirePointers();
try
{
unsafe
{
stream.ReserveMultiple(2, 2 * sizeof(UnsafeObjectTypeOne));
*(UnsafeObjectTypeOne*)stream.Data = new UnsafeObjectTypeOne() { ObjectType = UnsafeObjectType.TypeOne, Value1 = 123 };
stream.FinalizeObject(sizeof(UnsafeObjectTypeOne));
*(UnsafeObjectTypeOne*)stream.Data = new UnsafeObjectTypeOne() { ObjectType = UnsafeObjectType.TypeOne, Value1 = 234 };
stream.FinalizeObject(sizeof(UnsafeObjectTypeOne));
stream.ReserveInsert(1, 2, 2 * sizeof(UnsafeObjectTypeTwo));
*(UnsafeObjectTypeTwo*)stream.Data = new UnsafeObjectTypeTwo() { ObjectType = UnsafeObjectType.TypeTwo, Value1 = 111, Value2 = 222 };
stream.FinalizeObject(sizeof(UnsafeObjectTypeTwo));
*(UnsafeObjectTypeTwo*)stream.Data = new UnsafeObjectTypeTwo() { ObjectType = UnsafeObjectType.TypeTwo, Value1 = 333, Value2 = 444 };
stream.FinalizeObject(sizeof(UnsafeObjectTypeTwo));
TheResultingValue(stream.LengthInBytes).ShouldBe(2 * sizeof(UnsafeObjectTypeOne) + 2 * sizeof(UnsafeObjectTypeTwo));
TheResultingValue(stream.LengthInObjects).ShouldBe(4);
var objData0 = (UnsafeObjectTypeOne*)stream.SeekObject(0);
TheResultingValue(objData0->ObjectType).ShouldBe(UnsafeObjectType.TypeOne);
TheResultingValue(objData0->Value1).ShouldBe(123);
var objData1 = (UnsafeObjectTypeTwo*)stream.SeekObject(1);
TheResultingValue(objData1->ObjectType).ShouldBe(UnsafeObjectType.TypeTwo);
TheResultingValue(objData1->Value1).ShouldBe(111);
TheResultingValue(objData1->Value2).ShouldBe(222);
var objData2 = (UnsafeObjectTypeTwo*)stream.SeekObject(2);
TheResultingValue(objData2->ObjectType).ShouldBe(UnsafeObjectType.TypeTwo);
TheResultingValue(objData2->Value1).ShouldBe(333);
TheResultingValue(objData2->Value2).ShouldBe(444);
var objData3 = (UnsafeObjectTypeOne*)stream.SeekObject(3);
TheResultingValue(objData3->ObjectType).ShouldBe(UnsafeObjectType.TypeOne);
TheResultingValue(objData3->Value1).ShouldBe(234);
}
}
finally
{
stream.ReleasePointers();
}
}
public void UnsafeObjectStream_RawSeekForward_SeeksToNextObject_WhenNotAtEndOfStream()
{
var stream = new UnsafeObjectStream();
stream.AcquirePointers();
try
{
unsafe
{
stream.ReserveMultiple(2, 2 * sizeof(UnsafeObjectTypeOne));
*(UnsafeObjectTypeOne*)stream.Data = new UnsafeObjectTypeOne() { ObjectType = UnsafeObjectType.TypeOne, Value1 = 123 };
stream.FinalizeObject(sizeof(UnsafeObjectTypeOne));
*(UnsafeObjectTypeOne*)stream.Data = new UnsafeObjectTypeOne() { ObjectType = UnsafeObjectType.TypeOne, Value1 = 234 };
stream.FinalizeObject(sizeof(UnsafeObjectTypeOne));
stream.RawSeekObject(0);
TheResultingValue(stream.PositionInBytes).ShouldBe(0);
TheResultingValue(stream.PositionInObjects).ShouldBe(0);
stream.SeekForward();
TheResultingValue(stream.PositionInBytes).ShouldBe(sizeof(UnsafeObjectTypeOne));
TheResultingValue(stream.PositionInObjects).ShouldBe(1);
stream.SeekForward();
TheResultingValue(stream.PositionInBytes).ShouldBe(sizeof(UnsafeObjectTypeOne) + sizeof(UnsafeObjectTypeOne));
TheResultingValue(stream.PositionInObjects).ShouldBe(2);
}
}
finally
{
stream.ReleasePointers();
}
}