Method pickleRoundTrip

Lib/test/test_xml_etree.py:189–202

(self, obj, name, dumper, loader, proto)

        cls.modules = {pyET, ET}

    def pickleRoundTrip(self, obj, name, dumper, loader, proto):
        try:
            with swap_item(sys.modules, name, dumper):
                temp = pickle.dumps(obj, proto)
            with swap_item(sys.modules, name, loader):
                result = pickle.loads(temp)
        except pickle.PicklingError as pe:
            # pyET must be second, because pyET may be (equal to) ET.
            human = dict([(ET, "cET"), (pyET, "pyET")])
            raise support.TestFailed("Failed to round-trip %r from %r to %r"
                                     % (obj,
                                        human.get(dumper, dumper),
                                        human.get(loader, loader))) from pe
        return result

    def assertEqualElements(self, alice, bob):
        self.assertIsInstance(alice, (ET.Element, pyET.Element))