'Ensure mutliple inheritance of abstract documents'

def test_document_inheritance(self):

    class DateCreatedDocument(Document, ):
        meta = {'allow_inheritance': True, 'abstract': True}
    class DateUpdatedDocument(Document, ):
        meta = {'allow_inheritance': True, 'abstract': True}
    try:
        class MyDocument(DateCreatedDocument, DateUpdatedDocument, ):
            pass
    except Exception:
        self.assertTrue(False, "Couldn't    create    MyDocument    class")
