public void TC23_GetStudentCourseReport_NotEmpty() { Student student = new Student("HE141010", "Tung", "Ha Vu Son", 21, "*****@*****.**"); Course course = new Course("1", "Discrete Mathematics"); StudentCourse studentCourse = new StudentCourse("1", "HE141010", "termWhat?"); IManager manager = new Manager(); manager.AddCourse(course); manager.AddStudent(student); manager.AddStudentCourse(studentCourse); string output = studentCourse.ToString(); string actual = String.IsNullOrEmpty(output) ? "\nStudent Course List is Empty!!\n" : "\n" + output + "\n"; Assert.AreEqual(actual, manager.GetStudentCourseReport()); }