private void Move(int defaultIndex, int targetIndex, int targetOrder, Movement movement)
{
var originItem = _collection[defaultIndex];
var targetItem = _collection[targetIndex];
if (movement == Movement.Up)
{
_collection.MoveUp(originItem);
}
else
{
_collection.MoveDown(originItem);
}
var changedItems = _collection.FlushModifications();
Assert.AreEqual(targetOrder, originItem.SortOrder);
if (defaultIndex != targetIndex)
{
Assert.True(changedItems.Contains(originItem), "Changed items does not contain the origin item");
Assert.True(changedItems.Contains(targetItem), "Changed items does not contain the target item");
}
if (defaultIndex == targetIndex)
{
Assert.True(!changedItems.Any());
}
var itemIndex = _collection.IndexOf(originItem);
Assert.AreEqual(targetIndex, itemIndex, "Item is not at the right position!");
}
