public void AreNotEqual() { ArrayList set1 = new ArrayList(); ArrayList set2 = new ArrayList(); set1.Add("x"); set1.Add("y"); set1.Add("z"); set2.Add("x"); set2.Add("y"); set2.Add("x"); OldCollectionAssert.AreNotEqual(set1, set2); OldCollectionAssert.AreNotEqual(set1, set2, "test"); OldCollectionAssert.AreNotEqual(set1, set2, "test {0}", "1"); }