mirror of https://github.com/python/cpython
[3.13] gh-121474: Add threading.Barrier parties arg sanity check. (GH-121480) (GH-122444)
(cherry picked from commit d27a53fc02
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Co-authored-by: Clinton <pygeek@users.noreply.github.com>
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@ -1013,6 +1013,10 @@ class BarrierTests(BaseTestCase):
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self.assertEqual(self.barrier.n_waiting, 0)
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self.assertFalse(self.barrier.broken)
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def test_constructor(self):
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self.assertRaises(ValueError, self.barriertype, parties=0)
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self.assertRaises(ValueError, self.barriertype, parties=-1)
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def test_barrier(self, passes=1):
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"""
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Test that a barrier is passed in lockstep
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@ -689,6 +689,8 @@ class Barrier:
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default for all subsequent 'wait()' calls.
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"""
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if parties < 1:
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raise ValueError("parties must be > 0")
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self._cond = Condition(Lock())
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self._action = action
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self._timeout = timeout
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@ -0,0 +1,2 @@
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Fix missing sanity check for ``parties`` arg in :class:`threading.Barrier`
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constructor. Patch by Clinton Christian (pygeek).
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