def test_timeout_default_resolve(self) -> None:
        """The timeout default is resolved when read_timeout is accessed."""
        timeout = Timeout()
        with patch("urllib3.util.timeout.getdefaulttimeout", return_value=2):
            assert timeout.read_timeout == 2

        with patch("urllib3.util.timeout.getdefaulttimeout", return_value=3):
            assert timeout.read_timeout == 3
The timeout default is resolved when read_timeout is accessed.
test/test_util.py