public void UndoDeletion() { WikiDiff d = new WikiDiff(); d.GetDiff(@" A1 A2", @"A1 A2", 2); Assert.AreEqual(@" A1 A2", d.UndoDeletion(0, 0), "Undo of delete first blank line"); d = new WikiDiff(); d.GetDiff(@"A1 A2 ", @"A1 A2", 2); Assert.AreEqual(@"A1 A2 ", d.UndoDeletion(2, 2), "Undo of delete last blank line"); }