public void DeleteCombination()
{
CombinationManager man = new CombinationManager(combi4);
CompoundEdit ce = (CompoundEdit)man.DeleteCombination(structure);
ce.EndAllEdits();
Assert.IsFalse(test1.Combinations.Contains(combi4));
Assert.IsFalse(test2.Combinations.Contains(combi4));
Assert.IsFalse(dep.Combinations.Contains(combi4));
ce.Undo();
Assert.IsTrue(test1.Combinations.Contains(combi4));
Assert.IsTrue(test2.Combinations.Contains(combi4));
Assert.IsTrue(dep.Combinations.Contains(combi4));
}
