def test_with_many_courses_and_many_students(self):
alex = Student(name="Alex")
alex.save()
jordan = Student(name="Jordan")
jordan.save()
math = Course(name="Math")
math.save()
biology = Course(name="Biology")
biology.save()
alex.enroll(math)
jordan.enroll(biology)
alex.enroll(biology)
self.assertListEqual(list(alex.get_courses()), [math, biology])
self.assertListEqual(list(jordan.get_courses()), [biology])
self.assertListEqual(list(biology.get_students()), [alex, jordan])
self.assertListEqual(list(math.get_students()), [alex])
alex.disenroll(biology)
self.assertListEqual(list(alex.get_courses()), [math])
self.assertListEqual(list(biology.get_students()), [jordan])
jordan.disenroll(math)
self.assertListEqual(list(jordan.get_courses()), [biology])
self.assertListEqual(list(math.get_students()), [alex])
def test_disenroll_not_enrolled_student_from_course(self):
student = Student(name='Alex')
student.save()
course = Course(name='Math')
course.save()
self.assertNotIn(student, course.get_students())
self.assertNotIn(course, student.get_courses())
student.disenroll(course)
self.assertNotIn(student, course.get_students())
self.assertNotIn(course, student.get_courses())
def test_enroll_already_enrolled_student_in_course(self):
student = Student(name='Alex')
student.save()
course = Course(name='Math')
course.save()
student.enroll(course)
self.assertIn(student, course.get_students())
self.assertIn(course, student.get_courses())
student.enroll(course)
self.assertIn(student, course.get_students())
self.assertIn(course, student.get_courses())
def test_enroll_student_in_course(self):
student = Student(name='Alex')
student.save()
course = Course(name='Math')
course.save()
self.assertIsInstance(course.get_students(), QuerySet)
self.assertNotIn(student, course.get_students())
self.assertIsInstance(student.get_courses(), QuerySet)
self.assertNotIn(course, student.get_courses())
student.enroll(course)
self.assertIn(student, course.get_students())
self.assertIn(course, student.get_courses())