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37 lines
974 B
Python
37 lines
974 B
Python
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from testfixtures.mock import Mock, call
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from testfixtures import Replacer, compare
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from testfixtures.components import TestComponents
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from unittest import TestCase
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from warnings import catch_warnings
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class ComponentsTests(TestCase):
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def test_atexit(self):
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m = Mock()
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with Replacer() as r:
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r.replace('atexit.register', m.register)
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c = TestComponents()
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expected = [call.register(c.atexit)]
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compare(expected, m.mock_calls)
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with catch_warnings(record=True) as w:
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c.atexit()
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self.assertTrue(len(w), 1)
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compare(str(w[0].message), ( # pragma: no branch
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"TestComponents instances not uninstalled by shutdown!"
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))
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c.uninstall()
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compare(expected, m.mock_calls)
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# check re-running has no ill effects
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c.atexit()
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compare(expected, m.mock_calls)
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