mirror of
https://github.com/django/django.git
synced 2024-12-01 15:42:04 +01:00
103 lines
3.7 KiB
Python
103 lines
3.7 KiB
Python
from unittest import mock
|
|
|
|
from django.test import SimpleTestCase
|
|
from django.test.runner import Shuffler
|
|
|
|
|
|
class ShufflerTests(SimpleTestCase):
|
|
|
|
def test_hash_text(self):
|
|
actual = Shuffler._hash_text('abcd')
|
|
self.assertEqual(actual, 'e2fc714c4727ee9395f324cd2e7f331f')
|
|
|
|
def test_hash_text_hash_algorithm(self):
|
|
class MyShuffler(Shuffler):
|
|
hash_algorithm = 'sha1'
|
|
|
|
actual = MyShuffler._hash_text('abcd')
|
|
self.assertEqual(actual, '81fe8bfe87576c3ecb22426f8e57847382917acf')
|
|
|
|
def test_init(self):
|
|
shuffler = Shuffler(100)
|
|
self.assertEqual(shuffler.seed, 100)
|
|
self.assertEqual(shuffler.seed_source, 'given')
|
|
|
|
def test_init_none_seed(self):
|
|
with mock.patch('random.randint', return_value=200):
|
|
shuffler = Shuffler(None)
|
|
self.assertEqual(shuffler.seed, 200)
|
|
self.assertEqual(shuffler.seed_source, 'generated')
|
|
|
|
def test_init_no_seed_argument(self):
|
|
with mock.patch('random.randint', return_value=300):
|
|
shuffler = Shuffler()
|
|
self.assertEqual(shuffler.seed, 300)
|
|
self.assertEqual(shuffler.seed_source, 'generated')
|
|
|
|
def test_seed_display(self):
|
|
shuffler = Shuffler(100)
|
|
shuffler.seed_source = 'test'
|
|
self.assertEqual(shuffler.seed_display, '100 (test)')
|
|
|
|
def test_hash_item_seed(self):
|
|
cases = [
|
|
(1234, '64ad3fb166ddb41a2ca24f1803b8b722'),
|
|
# Passing a string gives the same value.
|
|
('1234', '64ad3fb166ddb41a2ca24f1803b8b722'),
|
|
(5678, '4dde450ad339b6ce45a0a2666e35b975'),
|
|
]
|
|
for seed, expected in cases:
|
|
with self.subTest(seed=seed):
|
|
shuffler = Shuffler(seed=seed)
|
|
actual = shuffler._hash_item('abc', lambda x: x)
|
|
self.assertEqual(actual, expected)
|
|
|
|
def test_hash_item_key(self):
|
|
cases = [
|
|
(lambda x: x, '64ad3fb166ddb41a2ca24f1803b8b722'),
|
|
(lambda x: x.upper(), 'ee22e8597bff91742affe4befbf4649a'),
|
|
]
|
|
for key, expected in cases:
|
|
with self.subTest(key=key):
|
|
shuffler = Shuffler(seed=1234)
|
|
actual = shuffler._hash_item('abc', key)
|
|
self.assertEqual(actual, expected)
|
|
|
|
def test_shuffle_key(self):
|
|
cases = [
|
|
(lambda x: x, ['a', 'd', 'b', 'c']),
|
|
(lambda x: x.upper(), ['d', 'c', 'a', 'b']),
|
|
]
|
|
for num, (key, expected) in enumerate(cases, start=1):
|
|
with self.subTest(num=num):
|
|
shuffler = Shuffler(seed=1234)
|
|
actual = shuffler.shuffle(['a', 'b', 'c', 'd'], key)
|
|
self.assertEqual(actual, expected)
|
|
|
|
def test_shuffle_consistency(self):
|
|
seq = [str(n) for n in range(5)]
|
|
cases = [
|
|
(None, ['3', '0', '2', '4', '1']),
|
|
(0, ['3', '2', '4', '1']),
|
|
(1, ['3', '0', '2', '4']),
|
|
(2, ['3', '0', '4', '1']),
|
|
(3, ['0', '2', '4', '1']),
|
|
(4, ['3', '0', '2', '1']),
|
|
]
|
|
shuffler = Shuffler(seed=1234)
|
|
for index, expected in cases:
|
|
with self.subTest(index=index):
|
|
if index is None:
|
|
new_seq = seq
|
|
else:
|
|
new_seq = seq.copy()
|
|
del new_seq[index]
|
|
actual = shuffler.shuffle(new_seq, lambda x: x)
|
|
self.assertEqual(actual, expected)
|
|
|
|
def test_shuffle_same_hash(self):
|
|
shuffler = Shuffler(seed=1234)
|
|
msg = "item 'A' has same hash 'a56ce89262959e151ee2266552f1819c' as item 'a'"
|
|
with self.assertRaisesMessage(RuntimeError, msg):
|
|
shuffler.shuffle(['a', 'b', 'A'], lambda x: x.upper())
|