public void AddMark_Same_Rewritten()
{
Student student = new Student("Unset", "Unset", "Unset");
student.AddMark("Math", 9, out bool rewritten1);
student.AddMark("Math", 10, out bool rewritten2);
Assert.IsTrue(student.Marks[0].Value == 10 && student.Marks.Count == 1);
}
public void AddMark_GreaterThanTen_Exception()
{
Student s1 = new Student("Unset", "Unset", "Unset");
Mark mark = new Mark {
SubjectName = "Math", Value = 12
};
Assert.ThrowsException <ArgumentException>(() => s1.AddMark(mark, out bool rewritten));
}