def test_other_no_change(self):
hand = [1, 2, 3]
want = [1, 2, 3]
maybe_double_last(hand)
self.assertEqual(
hand,
want,
msg=f'Expected {want} but got an incorrect result: {hand!r}'
)
def test_instructions_example_2(self):
hand = [5, 9, 10]
want = [5, 9, 10]
maybe_double_last(hand)
self.assertEqual(
hand,
want,
msg=f'Expected {want} but got an incorrect result: {hand!r}'
)
def test_other_doubles(self):
hand = [1, 2, 11]
want = [1, 2, 22]
got = maybe_double_last(hand)
self.assertEqual(
want,
got,
msg=f'Expected {want} but got an incorrect result: {got!r}')
def test_instructions_example_1(self):
hand = [5, 9, 11]
want = [5, 9, 22]
got = maybe_double_last(hand)
self.assertEqual(
want,
got,
msg=f'Expected {want} but got an incorrect result: {got!r}')
def test_maybe_double_last(self):
input_vars = [[1, 2, 11], [5, 9, 11], [5, 9, 10], [1, 2, 3]]
results = [[1, 2, 22], [5, 9, 22], [5, 9, 10], [1, 2, 3]]
for variant, (hand,
doubled_hand) in enumerate(zip(input_vars, results),
start=1):
error_message = f'Expected {doubled_hand} as the maybe-doubled version of {hand}.'
with self.subTest(f'variation #{variant}',
input=hand,
output=doubled_hand):
self.assertEqual(doubled_hand,
maybe_double_last(hand),
msg=error_message)