public void Should_sorted_after_run()
{
var ar = new ArrangedLists();
var result = Program.CountingSort(ar.NotSortedList);
Assert.Equal(ar.AnswerList, result);
}
public void Should_fail_when_being_sorted_list_contains_minus_values()
{
var ar = new ArrangedLists();
Action act1 = () => Program.CountingSort(ar.ContainMinusValuesList);
Assert.Throws <ArgumentException>(act1);
}