public void TestGroupBy02() { Dictionary <char, string[]> actual = Grouping.GroupBy02(); Dictionary <char, string[]> expected = new Dictionary <char, string[]> { { 'b', new string[] { "blueberry", "banana" } }, { 'c', new string[] { "chimpanzee", "cheese" } }, { 'a', new string[] { "abacus", "apple" } } }; Assert.AreEqual(true, actual.ContentEquals <char, string[], string>(expected), "You failed!"); }