def testMetaElement(self):
        meta = Element._meta
        self.assertTrue(meta.related in 'composites')
        manager = Element.composites
        self.assertEqual(manager.model,CompositeElement)
        self.assertEqual(manager.relmodel,Element)
        self.assertEqual(manager.formodel,Composite)
dataset/ETHPy150Open lsbardel/python-stdnet/tests/all/query/manytomany.py/TestManyToManyThrough.testMetaElement/swapped operands of `in`