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import pytest
from cyclopts.utils import Sentinel, grouper
def test_grouper():
assert [(1,), (2,), (3,), (4,)] == list(grouper([1, 2, 3, 4], 1))
assert [(1, 2), (3, 4)] == list(grouper([1, 2, 3, 4], 2))
assert [(1, 2, 3, 4)] == list(grouper([1, 2, 3, 4], 4))
with pytest.raises(ValueError):
grouper([1, 2, 3, 4], 3)
def test_sentinel():
class SENTINEL_VALUE(Sentinel): # noqa: N801
pass
assert str(SENTINEL_VALUE) == "<SENTINEL_VALUE>"
assert bool(SENTINEL_VALUE) is False
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