public void PersonNameConverter_PerformSortCorrectly( ) { PersonNameConverter converter = new PersonNameConverter(); NameSorter sorter = new NameSorter(); // Define the test input and expected result string[] rawNames = { "Homer Jay Simpson", "Bart Simpson", "Ned Flanders", "Milhouse Van Houten" }; string[] expectedResult = { "Ned Flanders", "Milhouse Van Houten", "Bart Simpson", "Homer Jay Simpson" }; // create the list of PersonNames to sort List <PersonName> personNames = converter.StringArrayToPersonNameList(rawNames); // perfome the operation that is being tested. The sort operation. personNames = sorter.SortByLastNameThenFirstName(personNames); // if the input and the result are equal both methods worked. Assert.Equal(expectedResult, converter.PersonNameListToStringArray(personNames)); }