Question

• in python please I need both unittest and traditional test
• Goal: Implement and test the OnlineStudent class as shown in the Student/OnlineStudent UML Diagram.
• 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 classStudent.
  2. The __lt__ 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 test1 script in Project 4a) that tests the additional instance members of the OnlineStudent class that are not in the Student class:

     __init__   __str__   __repr__   __lt__  
     
     email  study_group  add_group_member
     

     __init__, __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.

students.txt

mcarter,Carter,Marilyn,312/473-4837,1,[email protected]
ggraber,Graber,Gary,312/837-2837,3,[email protected]
ccarpent,Carpenter,Carrie,312/377-2873,2,[email protected]
ccheng,Cheng,Sam,312/272-4473,1,[email protected]
obooker,Booker,Olivia,312/928-3980,4,[email protected]
rscanchez,Sanchez,Ricardo,312/838-9928,2,[email protected]
cdharan,Dharan,Connor,312/263-3922,2,[email protected]
yboulet,Boulet,Yvette,312/235-3728,3,[email protected]
rbolger,Bolger,Raymond,312/663-3827,4,[email protected]
sstrickl,Strickland,Sheryl,312/878-9800,1,[email protected]

study-groups.txt

ccarpent,yboulet,obooker
yboulet,ccarpent,obooker
obooker,ccarpent,yboulet
ccheng,cdharan,rbolger,ggraber
cdharan,rbolger,ggraber,ccheng
rbolger,ggraber,ccheng,cdharan
ggraber,ccheng,cdharan,rbolger
mcarter,sstrickl
sstrickl,mcarter

Student + last_name: str +first_name: str +phone str + year: int -init-(self: Student, i : int, last: str, first: str, ph : str. yr : int) -str (self. Student) repr_(self: Student) +update_year(self: Student) Online Student email: str + study_group: strl] 一init-(self: OnlineStudent, i : int, lapt : str, first: str. ph : str. yr : int, em : str) str_(self: OnlineStudent) repr__(self: OnlineStudent) It_(self. OnlineStudent, other: OnlineStudent) +add group member(self: OnlineStudent, member id: int)

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)

--------------------------------------------------------------------------------------------------------------------------------------

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")