'Test that you can pass in a different base URL to build_url'

def test_build_url_uses_a_different_base(self):

    s = self.build_session()
    url = s.build_url('gists', '123456', 'history', base_url='https://status.github.com')
    assert (url == 'https://status.github.com/gists/123456/history')
