public void CreateAddCombinationEditTest() { Dependency dependency = new Dependency(); Combination combination = new Combination(); ce.AddEdit(EditFactory.instance.CreateAddCombinationEdit(dependency, combination)); dependency.AddCombination(combination); ce.End(); ce.Undo(); Assert.IsFalse(dependency.Combinations.Contains(combination)); ce.Redo(); Assert.IsTrue(dependency.Combinations.Contains(combination)); }