Method test_fromisoformat_fails

Lib/test/datetimetester.py:2086–2110

(self)

        self.assertIsInstance(dt_rt, DateSubclass)

    def test_fromisoformat_fails(self):
        # Test that fromisoformat() fails on invalid values
        bad_strs = [
            '',                 # Empty string
            '\ud800',           # bpo-34454: Surrogate code point
            '009-03-04',        # Not 10 characters
            '123456789',        # Not a date
            '200a-12-04',       # Invalid character in year
            '2009-1a-04',       # Invalid character in month
            '2009-12-0a',       # Invalid character in day
            '2009-01-32',       # Invalid day
            '2009-02-29',       # Invalid leap day
            '2019-W53-1',       # No week 53 in 2019
            '2020-W54-1',       # No week 54
            '0000-W25-1',       # Invalid year
            '10000-W25-1',      # Invalid year
            '2020-W25-0',       # Invalid day-of-week
            '2020-W25-8',       # Invalid day-of-week
            '٢025-03-09'        # Unicode characters
            '2009\ud80002\ud80028',     # Separators are surrogate codepoints
        ]

        for bad_str in bad_strs:
            with self.assertRaises(ValueError):
                self.theclass.fromisoformat(bad_str)

    def test_fromisoformat_fails_typeerror(self):
        # Test that fromisoformat fails when passed the wrong type