public void GetAllTestMethod() { //arrange GroupCreator creator = (GroupCreator)factory.GetGroupCreator(); List <Group> expected = new List <Group> { new Group(1, "Group-1"), new Group(2, "Group-2"), new Group(3, "Group-3"), new Group(4, "Group-4") }; //act List <Group> actual = creator.GetAll().ToList <Group>(); //assert CollectionAssert.AreEqual(expected, actual); }