Method test_optional

tests/test_converters.py:303–309

Nothing happens if None.

(self)

class TestOptionalPipe:
    def test_optional(self):
        """
        Nothing happens if None.
        """
        c = optional(pipe(str, Converter(to_bool), bool))

        assert None is c.converter(None, None, None)

    def test_pipe(self):
        """