public void AddItemTest()
{
var newItem = new SortObj("New Item");
var currentItems = _collection.Count;
_collection.Add(newItem);
Assert.AreEqual(currentItems + 1, newItem.SortOrder);
}
public void UnknownItemTest()
{
var knownItem = _collection[0];
var unknownItem = new SortObj("Devil");
Assert.Throws <ArgumentException>(() => _collection.InsertBefore(unknownItem, knownItem));
Assert.Throws <ArgumentException>(() => _collection.InsertAfter(unknownItem, knownItem));
Assert.Throws <ArgumentException>(() => _collection.MoveUp(unknownItem));
Assert.Throws <ArgumentException>(() => _collection.MoveDown(unknownItem));
}
public void InsertBeforeTest(int beforeItemIndex, int originTargetIndex, int changedItemsCount)
{
var beforeItem = _collection[beforeItemIndex];
var newItem = new SortObj("E");
_collection.InsertBefore(beforeItem, newItem);
var changedItems = _collection.FlushModifications();
Assert.AreEqual(originTargetIndex, _collection.IndexOf(beforeItem));
Assert.AreEqual(changedItemsCount, changedItems.Count);
Assert.IsTrue(changedItems.Contains(newItem));
}