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"""Tests for the pylint checker in :mod:`pylint.extensions.while
"""
import astroid
from pylint.extensions.while_used import WhileChecker
from pylint.testutils import CheckerTestCase, Message
class TestWhileUsed(CheckerTestCase):
CHECKER_CLASS = WhileChecker
def test_while_used(self) -> None:
node = astroid.extract_node(
"""
def f():
i = 0
while i < 10:
i += 1
"""
).body[1]
with self.assertAddsMessages(Message("while-used", node=node)):
self.checker.visit_while(node)
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