"""Test the errno module
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Roger E. Masse
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"""
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import errno
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import unittest
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std_c_errors = frozenset(['EDOM', 'ERANGE'])
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class ErrnoAttributeTests(unittest.TestCase):
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def test_for_improper_attributes(self):
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# No unexpected attributes should be on the module.
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for error_code in std_c_errors:
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self.assertTrue(hasattr(errno, error_code),
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"errno is missing %s" % error_code)
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def test_using_errorcode(self):
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# Every key value in errno.errorcode should be on the module.
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for value in errno.errorcode.values():
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self.assertTrue(hasattr(errno, value),
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'no %s attr in errno' % value)
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class ErrorcodeTests(unittest.TestCase):
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def test_attributes_in_errorcode(self):
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for attribute in errno.__dict__.keys():
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if attribute.isupper():
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self.assertIn(getattr(errno, attribute), errno.errorcode,
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'no %s attr in errno.errorcode' % attribute)
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if __name__ == '__main__':
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unittest.main()
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