def test_add_record(self): database = BookDataBase(self.file) book = Book("Somewhere", "Steven Law", 2000, "Fantasy", 0.2, 3) book1 = Book("What", "Steven Maw", 2000, "Triller", 0.2, 20) book2 = Book("Go", "Steven Law", 2000, "Thriller", 0.2, 20) book3 = Book("Go", "Steven Law", 2000, "Thriller", 0.8, 12) booklist = [book, book1, book2] expected_records = [book.special_record() for book in booklist] database.add_record(book) database.add_record(book1) database.add_record(book2) with open(self.file, 'r') as file: actual_records = file.readlines() self.assertEqual(expected_records, actual_records) database.add_record(book3) book3.increase_number_of_copies(20) booklist = [book, book1, book3] new_expected_records = [book.special_record() for book in booklist] with open(self.file, 'r') as file: updated_records = file.readlines() self.assertEqual(new_expected_records, updated_records) os.remove(os.path.realpath(self.file))
def test_remove_record(self): database = BookDataBase(self.file) book = Book("What", "Steven Law", 2000, "Thriller", 0.2, 3) book1 = Book("What", "Steven Maw", 2000, "Thriller", 0.2, 20) book2 = Book("Go", "Steven Law", 2000, "Thriller", 0.2, 20) booklist = [book, book1, book2] recordlist = [book.special_record() for book in booklist] with open(self.file, 'w') as file: file.write("What+Steven Law+2000+Thriller+0.2+3\n") file.write("What+Steven Maw+2000+Thriller+0.2+20\n") file.write("Go+Steven Law+2000+Thriller+0.2+20\n") database.remove_record(book2) del recordlist[2] with open(self.file, 'r') as file: records_after_removal = file.readlines() self.assertEqual(recordlist, records_after_removal) database.remove_record(book) del recordlist[0] with open(self.file, 'r') as file: records_after_removal = file.readlines() self.assertEqual(recordlist, records_after_removal) os.remove(os.path.realpath(self.file))