public static void AddStudent()
        {
           

            Console.ForegroundColor = ConsoleColor.Blue;
            Student student = new Student();
            Console.WriteLine("Enter Student Number (Lenght 4 - ends with S)");
            student.StudentNumber = Console.ReadLine();
            Console.WriteLine("Enter Name");
            student.Name = Console.ReadLine();
            Console.WriteLine("Enter PPS Number (Lenght 7 - ends with N)");
            student.Pps = Console.ReadLine();
            Console.WriteLine("Enter Tpye (PostGraduate or Undergraduate)");
            student.Type = (Student_Type)Enum.Parse(typeof(Student_Type), Console.ReadLine());
            Console.WriteLine("Enter address:");
            student.Address = Console.ReadLine();
            Console.WriteLine("Enter Phone Number");
            student.Phone = Console.ReadLine();
            Console.WriteLine("Enter Email ( eg. [email protected] )");
            student.Email = Console.ReadLine();

         
                students.Add(student);

        }
        public void CheckWithWrongPpsNumber()
        {
            //Arrange
            Student student = new Student();
            string value = "123456";

            //Act
            student.Pps = value;

        }
        public void CheckWithWrongPostGraduate()
        {

            //Arrange
            Student student = new Student();
            string value = "PostGraduat";

            //Act
            student.Type = (Student_Type)Enum.Parse(typeof(Student_Type), value);

        }
        public void RemoveStudentfromListUsingWrongStudentNumber()

        {
            //Arrange
            Student student = new Student();
            student.StudentNumber = "456S";
            students.Add(student);
            string differentStudNumb = "123S";

            //Act
            bool expected = students.Remove(differentStudNumb);

            // Assert - expected shoud be false
            Assert.AreEqual(expected, false);

        }
        public void RemoveStudentfromListUsingRightStudentNumber()

        {
            //Arrange
            Student student = new Student();
            student.StudentNumber = "454S";
            students.Add(student);
            string EqualStudNumb = "454S";

            //Act
            bool expected= students.Remove(EqualStudNumb);

            // Assert - expected shoud be true
            Assert.AreEqual(expected,true);

        }