1import keyword
2import unittest
3
4
5class Test_iskeyword(unittest.TestCase):
6    def test_true_is_a_keyword(self):
7        self.assertTrue(keyword.iskeyword('True'))
8
9    def test_uppercase_true_is_not_a_keyword(self):
10        self.assertFalse(keyword.iskeyword('TRUE'))
11
12    def test_none_value_is_not_a_keyword(self):
13        self.assertFalse(keyword.iskeyword(None))
14
15    # This is probably an accident of the current implementation, but should be
16    # preserved for backward compatibility.
17    def test_changing_the_kwlist_does_not_affect_iskeyword(self):
18        oldlist = keyword.kwlist
19        self.addCleanup(setattr, keyword, 'kwlist', oldlist)
20        keyword.kwlist = ['its', 'all', 'eggs', 'beans', 'and', 'a', 'slice']
21        self.assertFalse(keyword.iskeyword('eggs'))
22
23    def test_changing_the_softkwlist_does_not_affect_issoftkeyword(self):
24        oldlist = keyword.softkwlist
25        self.addCleanup(setattr, keyword, "softkwlist", oldlist)
26        keyword.softkwlist = ["foo", "bar", "spam", "egs", "case"]
27        self.assertFalse(keyword.issoftkeyword("spam"))
28
29    def test_all_keywords_fail_to_be_used_as_names(self):
30        for key in keyword.kwlist:
31            with self.assertRaises(SyntaxError):
32                exec(f"{key} = 42")
33
34    def test_all_soft_keywords_can_be_used_as_names(self):
35        for key in keyword.softkwlist:
36            exec(f"{key} = 42")
37
38    def test_async_and_await_are_keywords(self):
39        self.assertIn("async", keyword.kwlist)
40        self.assertIn("await", keyword.kwlist)
41
42    def test_match_and_case_are_soft_keywords(self):
43        self.assertIn("match", keyword.softkwlist)
44        self.assertIn("case", keyword.softkwlist)
45        self.assertIn("_", keyword.softkwlist)
46
47    def test_keywords_are_sorted(self):
48        self.assertListEqual(sorted(keyword.kwlist), keyword.kwlist)
49
50    def test_softkeywords_are_sorted(self):
51        self.assertListEqual(sorted(keyword.softkwlist), keyword.softkwlist)
52
53
54if __name__ == "__main__":
55    unittest.main()
56