'Adds content to self.user\'s cart'

def add_to_cart(self):

    course = CourseFactory.create(org='MITx', number='999', display_name='Robot    Super    Course')
    CourseModeFactory.create(course_id=course.id)
    cart = Order.get_cart_for_user(self.user)
    PaidCourseRegistration.add_to_order(cart, course.id)
