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test_loaner.py
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test_loaner.py
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import unittest
import random
import datetime
from loaner import Item, Book, Game, VideoGame, UnloanableError, NotLoanedError
class TestItem(unittest.TestCase):
def setUp(self):
self.item = Item()
def test_new_item(self):
self.assertIsInstance(self.item, Item)
def test_loan_method_sets_loaned_variable(self):
self.item.loan()
self.assertTrue(self.item.loaned)
def test_sets_borrower_on_loan(self):
self.item.loan(borrower='James')
self.assertEqual(self.item.borrower, 'James')
def test_sets_loan_date(self):
self.loan_date = datetime.datetime.now()
self.item.loan(date=self.loan_date)
self.assertEqual(self.item.loan_date, self.loan_date)
def test_sets_return_date(self):
self.item.loan()
self.return_date = datetime.datetime.now()
self.item.collect(date=self.return_date)
self.assertEqual(self.item.return_date, self.return_date)
class TestUnloanableItem(unittest.TestCase):
def setUp(self):
self.item = Item(False)
def test_loanable_is_false(self):
self.assertFalse(self.item.loanable)
def test_loan_method_fails_for_unloanable_items(self):
self.assertRaises(UnloanableError, self.item.loan)
def test_collect_method_fails_for_unloaned_items(self):
self.assertRaises(NotLoanedError, self.item.collect)
class TestBook(TestItem):
def setUp(self):
self.pages = random.randint(50, 1000)
self.cover = 'hardcover'
self.item = Book(self.pages, self.cover)
def test_pages_set_in_constructor(self):
self.assertEqual(self.item.pages, self.pages)
def test_cover_set_in_constructor(self):
self.assertEqual(self.item.cover, self.cover)
def test_mark_read_sets_read_variable(self):
self.item.mark_read()
self.assertTrue(self.item.read)
class TestGame(TestItem):
def setUp(self):
self.players = random.randint(1, 8)
self.item = Game(self.players)
def test_players_set_in_constructor(self):
self.assertEqual(self.item.players, self.players)
def test_mark_completed_sets_completed_variable(self):
self.item.mark_completed()
self.assertTrue(self.item.completed)
class TestVideoGame(TestGame):
def setUp(self):
self.players = random.randint(1, 8)
self.platform = 'Xbox 360'
self.item = VideoGame(self.players, self.platform)
def test_platform_set_in_constructor(self):
self.assertEqual(self.item.platform, self.platform)