def test_negative_flow(self, mock_stdout):
"""when target amount is -1, program should print
'Target amount must be positive integer.'
Decorators:
patch: capture system stdout
Arguments:
mock_stdout {string} -- mock stdout for assertion
"""
self.change_maker = ChangeMaker(-1, self.coins)
self.change_maker.make_change()
self.assertEqual(mock_stdout.getvalue(),
'Target amount must be positive integer.\n')
class TestChangeMaker(TestCase):
"""Test change maker
"""
def setUp(self):
self.coins = [1, 2, 5, 10, 20, 50]
@patch('sys.stdout', new_callable=StringIO)
def test_negative_flow(self, mock_stdout):
"""when target amount is -1, program should print
'Target amount must be positive integer.'
Decorators:
patch: capture system stdout
Arguments:
mock_stdout {string} -- mock stdout for assertion
"""
self.change_maker = ChangeMaker(-1, self.coins)
self.change_maker.make_change()
self.assertEqual(mock_stdout.getvalue(),
'Target amount must be positive integer.\n')
def test_zero_flow(self):
"""No change needed when target amount is 0
"""
self.change_maker = ChangeMaker(0, self.coins)
self.assertEqual(self.change_maker.make_change(), [0, 0, 0, 0, 0, 0])
def test_positive_flow_24(self):
"""change list shoulde be [0, 2, 0, 0, 1, 0] when target amount is 24
"""
self.change_maker = ChangeMaker(24, self.coins)
self.assertEqual(self.change_maker.make_change(), [0, 2, 0, 0, 1, 0])
def test_positive_flow_88(self):
"""change list shoulde be [1, 1, 1, 1, 1, 1] when target amount is 88
"""
self.change_maker = ChangeMaker(88, self.coins)
self.assertEqual(self.change_maker.make_change(), [1, 1, 1, 1, 1, 1])
def test_positive_flow_176(self):
"""change list shoulde be [1, 0, 1, 0, 1, 3] when target amount is 176
"""
self.change_maker = ChangeMaker(176, self.coins)
self.assertEqual(self.change_maker.make_change(), [1, 0, 1, 0, 1, 3])
def test_positive_flow_188(self):
"""change list shoulde be [1, 1, 1, 1, 1, 3] when target amount is 188
"""
self.change_maker = ChangeMaker(188, self.coins)
self.assertEqual(self.change_maker.make_change(), [1, 1, 1, 1, 1, 3])
def test_positive_flow_188(self):
"""change list shoulde be [1, 1, 1, 1, 1, 3] when target amount is 188
"""
self.change_maker = ChangeMaker(188, self.coins)
self.assertEqual(self.change_maker.make_change(), [1, 1, 1, 1, 1, 3])
def test_positive_flow_24(self):
"""change list shoulde be [0, 2, 0, 0, 1, 0] when target amount is 24
"""
self.change_maker = ChangeMaker(24, self.coins)
self.assertEqual(self.change_maker.make_change(), [0, 2, 0, 0, 1, 0])
def test_zero_flow(self):
"""No change needed when target amount is 0
"""
self.change_maker = ChangeMaker(0, self.coins)
self.assertEqual(self.change_maker.make_change(), [0, 0, 0, 0, 0, 0])