public void Student_AddGradeToCourse() { Student newStudent = new Student("Johnny English", "2001-09-21", 1); newStudent.Save(); Course newCourse = new Course("English 101", "ENG101", 1); newCourse.Save(); string expected = "A"; newStudent.AddCourse(newCourse.GetId()); newStudent.UpdateCourseGrade(newCourse.GetId(), expected); string actual = newStudent.GetCourseGrade(newCourse.GetId()); Assert.Equal(expected, actual); }