Class QuotedString

tests/utils_tests/test_functional.py:244–247

    def test_lazy_format(self):
        class QuotedString(str):
            def __format__(self, format_spec):
                value = super().__format__(format_spec)
                return f"“{value}”"

        lazy_f = lazy(lambda: QuotedString("Hello!"), QuotedString)
        self.assertEqual(format(lazy_f(), ""), "“Hello!”")