42 lines
1.4 KiB
Python
42 lines
1.4 KiB
Python
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import keyword
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import unittest
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from test.support import use_old_parser
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class Test_iskeyword(unittest.TestCase):
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def test_true_is_a_keyword(self):
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self.assertTrue(keyword.iskeyword('True'))
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def test_uppercase_true_is_not_a_keyword(self):
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self.assertFalse(keyword.iskeyword('TRUE'))
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def test_none_value_is_not_a_keyword(self):
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self.assertFalse(keyword.iskeyword(None))
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# This is probably an accident of the current implementation, but should be
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# preserved for backward compatibility.
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def test_changing_the_kwlist_does_not_affect_iskeyword(self):
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oldlist = keyword.kwlist
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self.addCleanup(setattr, keyword, 'kwlist', oldlist)
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keyword.kwlist = ['its', 'all', 'eggs', 'beans', 'and', 'a', 'slice']
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self.assertFalse(keyword.iskeyword('eggs'))
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def test_all_keywords_fail_to_be_used_as_names(self):
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all_keywords = set(keyword.kwlist)
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if use_old_parser():
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all_keywords.discard('__peg_parser__')
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for key in all_keywords:
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with self.assertRaises(SyntaxError):
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exec(f"{key} = 42")
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def test_async_and_await_are_keywords(self):
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self.assertIn("async", keyword.kwlist)
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self.assertIn("await", keyword.kwlist)
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def test_keywords_are_sorted(self):
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self.assertListEqual(sorted(keyword.kwlist), keyword.kwlist)
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if __name__ == "__main__":
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unittest.main()
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