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24 lines
529 B
24 lines
529 B
3 years ago
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import unittest
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class TestLoadAttrCache(unittest.TestCase):
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def test_descriptor_added_after_optimization(self):
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class Descriptor:
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pass
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class C:
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def __init__(self):
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self.x = 1
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x = Descriptor()
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def f(o):
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return o.x
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o = C()
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for i in range(1025):
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assert f(o) == 1
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Descriptor.__get__ = lambda self, instance, value: 2
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Descriptor.__set__ = lambda *args: None
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self.assertEqual(f(o), 2)
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