test_assets.py 文件源码

def test_repr(self):
        """ Test the __repr__ method of FutureChain.
        """
        cl = FutureChain(self.asset_finder, lambda: '2005-12-01', 'CL')
        cl_feb = FutureChain(self.asset_finder, lambda: '2005-12-01', 'CL',
                             as_of_date=pd.Timestamp('2006-02-01', tz='UTC'))

        # The default chain should not include the as of date.
        self.assertEqual(repr(cl), "FutureChain(root_symbol='CL')")

        # An explicit as of date should show up in the repr.
        self.assertEqual(
            repr(cl_feb),
            ("FutureChain(root_symbol='CL', "
             "as_of_date='2006-02-01 00:00:00+00:00')")
        )