public void GetAllUsersByName_FirstNameAlex_AllUsersWithNameAlex(string name) { User user1 = new User() { FirstName = "Alex", LastName = "Blck", Age = 22 }; User user2 = new User() { FirstName = "Mike", LastName = "red", Age = 123 }; User user3 = new User() { FirstName = "Sue", LastName = "gen", Age = 42 }; User user4 = new User() { FirstName = "Alex", LastName = "Black", Age = 111 }; UserStorageService service = new UserStorageService(user1, user2, user3, user4); Assert.AreEqual(new[] { user1, user4 }, service.GetAllUsersByName(name)); Assert.AreNotEqual(user4, service.GetFirstUserByName(name)); }