public void UnsafeObjectStream_RawSeekBackward_SeeksToPreviousObject_WhenNotAtBeginningOfStream()
{
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(stream.LengthInObjects);
TheResultingValue(stream.PositionInBytes).ShouldBe(stream.LengthInBytes);
TheResultingValue(stream.PositionInObjects).ShouldBe(stream.LengthInObjects);
stream.SeekBackward();
TheResultingValue(stream.PositionInBytes).ShouldBe(stream.LengthInBytes - (sizeof(UnsafeObjectTypeOne)));
TheResultingValue(stream.PositionInObjects).ShouldBe(stream.LengthInObjects - 1);
stream.SeekBackward();
TheResultingValue(stream.PositionInBytes).ShouldBe(stream.LengthInBytes - (sizeof(UnsafeObjectTypeOne) + sizeof(UnsafeObjectTypeOne)));
TheResultingValue(stream.PositionInObjects).ShouldBe(stream.LengthInObjects - 2);
}
}
finally
{
stream.ReleasePointers();
}
}