public void DragDropEffectsFromDragOperation()
{
Assert.AreEqual(DragDropEffects.Move, WindowsFormsHelper.ToDragDropEffects(DragOperations.Move));
Assert.AreEqual(DragDropEffects.Copy, WindowsFormsHelper.ToDragDropEffects(DragOperations.Copy));
Assert.AreEqual(DragDropEffects.Link, WindowsFormsHelper.ToDragDropEffects(DragOperations.Link));
Assert.AreEqual(DragDropEffects.Scroll, WindowsFormsHelper.ToDragDropEffects(DragOperations.Scroll));
Assert.AreEqual(DragDropEffects.All, WindowsFormsHelper.ToDragDropEffects(DragOperations.All));
Assert.AreEqual(DragDropEffects.None, WindowsFormsHelper.ToDragDropEffects(DragOperations.None));
// test also bitwise combined flags
Assert.AreEqual(DragDropEffects.Move | DragDropEffects.Copy, WindowsFormsHelper.ToDragDropEffects(DragOperations.Move | DragOperations.Copy));
}