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"""
Tests for `tqdm.contrib.itertools`.
"""
from tqdm.contrib.itertools import product
from tests_tqdm import with_setup, pretest, posttest, StringIO, closing
import itertools
class NoLenIter(object):
def __init__(self, iterable):
self._it = iterable
def __iter__(self):
for i in self._it:
yield i
@with_setup(pretest, posttest)
def test_product():
"""Test contrib.itertools.product"""
with closing(StringIO()) as our_file:
a = range(9)
assert list(product(a, a[::-1], file=our_file)) == \
list(itertools.product(a, a[::-1]))
assert list(product(a, NoLenIter(a), file=our_file)) == \
list(itertools.product(a, NoLenIter(a)))
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