Page 390 - Computer_Science_F5

(ii) Example using ‘unittest’:

import unittest
class TestLibrarySystem(unittest.TestCase):
def test_book_checkout(self): Chapter Five: Object oriented programming with Java
FOR ONLINE READING ONLY
book = Book(“Test Book”, “Author”, “12345”, 2)
self.assertTrue(book.checkout())
self.assertEqual(book.available_copies, 1)

def test_user_checkout_book(self):
book = Book(“Test Book”, “Author”, “12345”, 1)

user = User(“Alice”, “001”)
user.checkout_book(book)
self.assertIn(book, user.checked_out_books)

if __name__ == ‘__main__’:
unittest.main()

(b) Integration tests:
Ensure the ‘Library’, ‘Book’, and ‘User’ classes work together smoothly.

library = Library()
book1 = Book(“Python Programming”, “ Sarai Mkuvangwa “, “1234567890”, 3)
user1 = User(“Alice”, “001”)

library.add_book(book1)

library.add_user(user1)

user1.checkout_book(book1)
user1.return_book(book1)

2. Debugging
(a) Print statements: Add print statements within methods to track flow and
variable states.
(b) Debugging Tools:
(i) Use pdb for step-by-step debugging.
(ii) Set breakpoints in your IDE to monitor execution.

381
Student’s Book Form Five

Computer Science Form 5.indd 381 23/07/2024 12:34