Question

this is written in python
Goal: Implement and test the Onlinestudent class as shown in the Student/OnlineStudent UML Diagram Relevant Examples: EmployeeHierarchy PersonArray Pet Input Files: students.txt study-groups.txt The study_group instance variable is a list that contains the username values of the other members in the student's study group Details: 1. Implement the onlinestudent class in the module onlinestudent.py as specified by the Student/OnlineStudent UML Diagram. Onlinestudent is the derived class of the base class student. 2. The_1t__method for an onlinestudent object should return true if self.username < other.username 3. The add group member method adds the username of a new study group member to the study_group instance member list 4. Write a traditional test class test1.py (different than your testl script in Project 4a) that tests the additional instance members of the Onlinestudent class that are not in the student class: init str lt repr email study group add group member init_j__str__, and_repr__are tested again in the Onlinestudent class because they are overridden methods Convert your test1.py script to a unit test script test2.py. Grading: online student .py: 30%, test1.py: 25%, test2.py: 25%, Comments: 10%, Indentation: 596, Submitted Correctly: 5%.

Answer 1

class Student:

    def __init__(self, i, last, first, ph, yr):
        self.username = i
        self.last_name = last
        self.first_name = first
        self.phone = ph
        self.year = yr

    def update_year(self):
        self.year += 1


class OnlineStudent(Student):
    """This class inherits from Student class"""

    def __init__(self, i, last, first, ph, year, em):
        """Call parent class constructor"""
        Student.__init__(self, i, last, first, ph, year)
        self.email = em
        # Initialize empty study group array
        self.study_group = []

    def __str__(self):
        return self.last_name + "," + self.first_name

    def __lt__(self, other):
        return self.username < other.username

    def add_group_member(self, member_id):
        # Add the member id to the study group
        self.study_group.append(member_id)

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Test2.py

import unittest

import Student

class OnlineStudentTest(unittest.TestCase):
    def test_email(self):
        student = Student.OnlineStudent(1, 'last1', 'first1', 1, 1, "[email protected]")
        self.assertEqual("[email protected]", student.email, "Email not correct")

    def test_lt(self):
        student1 = Student.OnlineStudent(1, 'last1', 'first1', 1, 1, "[email protected]")
        student2 = Student.OnlineStudent(2, 'last2', 'first2', 1, 1, "[email protected]")
        self.assertTrue(student1.__lt__(student2), "Student 1 is less than 2")

    def test_str(self):
        student1 = Student.OnlineStudent(1, 'last1', 'first1', 1, 1, "[email protected]")
        self.assertEqual("last1,first1", student1.__str__(), "str function should gives all fields")

    def test_add_group_member(self):
        year = 1
        student = Student.OnlineStudent(1, 'last1', 'first1', 1, 1, "[email protected]")
        student.add_group_member("1")
        self.assertEqual("1", student.study_group[0], "Group member should be added")