def test_value_to_string(self):
        obj = self.rp
        field = self.rp._meta.get_field('body')
        self.assertNotEqual(field.value_to_string(obj), u'')    # expected
        self.assertEqual(field.value_to_string(None), u'')      # edge case

    # Other #################
Called when the system object is first created.
dataset/ETHPy150Open jamesturk/django-markupfield/markupfield/tests/tests.py/MarkupFieldTestCase.test_value_to_string--crossover with--dataset/ETHPy150Open EricssonResearch/calvin-base/calvin/calvinsys/media/mediaplayer.py/register