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Path: /opt/imunify360/venv/lib/python3.11/site-packages/simplejson/tests/

Viewing File: test_namedtuple.py

from __future__ import absolute_import
import unittest
import simplejson as json
from simplejson.compat import StringIO

try:
    from unittest import mock
except ImportError:
    mock = None

from collections import namedtuple
Value = namedtuple('Value', ['value'])
Point = namedtuple('Point', ['x', 'y'])

class DuckValue(object):
    def __init__(self, *args):
        self.value = Value(*args)

    def _asdict(self):
        return self.value._asdict()

class DuckPoint(object):
    def __init__(self, *args):
        self.point = Point(*args)

    def _asdict(self):
        return self.point._asdict()

class DeadDuck(object):
    _asdict = None

class DeadDict(dict):
    _asdict = None

CONSTRUCTORS = [
    lambda v: v,
    lambda v: [v],
    lambda v: [{'key': v}],
]

class TestNamedTuple(unittest.TestCase):
    def test_namedtuple_dumps(self):
        for v in [Value(1), Point(1, 2), DuckValue(1), DuckPoint(1, 2)]:
            d = v._asdict()
            self.assertEqual(d, json.loads(json.dumps(v)))
            self.assertEqual(
                d,
                json.loads(json.dumps(v, namedtuple_as_object=True)))
            self.assertEqual(d, json.loads(json.dumps(v, tuple_as_array=False)))
            self.assertEqual(
                d,
                json.loads(json.dumps(v, namedtuple_as_object=True,
                                      tuple_as_array=False)))

    def test_namedtuple_dumps_false(self):
        for v in [Value(1), Point(1, 2)]:
            l = list(v)
            self.assertEqual(
                l,
                json.loads(json.dumps(v, namedtuple_as_object=False)))
            self.assertRaises(TypeError, json.dumps, v,
                tuple_as_array=False, namedtuple_as_object=False)

    def test_namedtuple_dump(self):
        for v in [Value(1), Point(1, 2), DuckValue(1), DuckPoint(1, 2)]:
            d = v._asdict()
            sio = StringIO()
            json.dump(v, sio)
            self.assertEqual(d, json.loads(sio.getvalue()))
            sio = StringIO()
            json.dump(v, sio, namedtuple_as_object=True)
            self.assertEqual(
                d,
                json.loads(sio.getvalue()))
            sio = StringIO()
            json.dump(v, sio, tuple_as_array=False)
            self.assertEqual(d, json.loads(sio.getvalue()))
            sio = StringIO()
            json.dump(v, sio, namedtuple_as_object=True,
                      tuple_as_array=False)
            self.assertEqual(
                d,
                json.loads(sio.getvalue()))

    def test_namedtuple_dump_false(self):
        for v in [Value(1), Point(1, 2)]:
            l = list(v)
            sio = StringIO()
            json.dump(v, sio, namedtuple_as_object=False)
            self.assertEqual(
                l,
                json.loads(sio.getvalue()))
            self.assertRaises(TypeError, json.dump, v, StringIO(),
                tuple_as_array=False, namedtuple_as_object=False)

    def test_asdict_not_callable_dump(self):
        for f in CONSTRUCTORS:
            self.assertRaises(
                TypeError,
                json.dump,
                f(DeadDuck()),
                StringIO(),
                namedtuple_as_object=True
            )
            sio = StringIO()
            json.dump(f(DeadDict()), sio, namedtuple_as_object=True)
            self.assertEqual(
                json.dumps(f({})),
                sio.getvalue())
            self.assertRaises(
                TypeError,
                json.dump,
                f(Value),
                StringIO(),
                namedtuple_as_object=True
            )

    def test_asdict_not_callable_dumps(self):
        for f in CONSTRUCTORS:
            self.assertRaises(TypeError,
                json.dumps, f(DeadDuck()), namedtuple_as_object=True)
            self.assertRaises(
                TypeError,
                json.dumps,
                f(Value),
                namedtuple_as_object=True
            )
            self.assertEqual(
                json.dumps(f({})),
                json.dumps(f(DeadDict()), namedtuple_as_object=True))

    def test_asdict_unbound_method_dumps(self):
        for f in CONSTRUCTORS:
            self.assertEqual(
                json.dumps(f(Value), default=lambda v: v.__name__),
                json.dumps(f(Value.__name__))
            )

    def test_asdict_does_not_return_dict(self):
        if not mock:
            raise unittest.SkipTest("unittest.mock required")
        fake = mock.Mock()
        self.assertTrue(hasattr(fake, '_asdict'))
        self.assertTrue(callable(fake._asdict))
        self.assertFalse(isinstance(fake._asdict(), dict))
        # https://github.com/simplejson/simplejson/pull/284
        # when running under a debug build of CPython (COPTS=-UNDEBUG)
        # a C assertion could fire due to an unchecked error of an PyDict
        # API call on a non-dict internally in _speedups.c.  Without a debug
        # build of CPython this test likely passes either way despite the
        # potential for internal data corruption.  Getting it to crash in
        # a debug build is not always easy either as it requires an
        # assert(!PyErr_Occurred()) that could fire later on.
        with self.assertRaises(TypeError):
            json.dumps({23: fake}, namedtuple_as_object=True, for_json=False)

    def test_asdict_dispatch_order(self):
        # Regression: the Python encoder used to check isinstance(o, list)
        # BEFORE _asdict(), so a list subclass that defines _asdict()
        # encoded as a plain list under Py and as an object under C.
        # Consolidated on C's order: _asdict() takes precedence over
        # list/tuple/dict container checks. for_json still wins over
        # _asdict in both backends.
        #
        # The _cibw_runner harness runs the whole test suite once with
        # the C speedups active and once with them disabled, so a single
        # assertion here covers both backends.
        class ListAsdict(list):
            def _asdict(self):
                return {'from_asdict': list(self)}

        class TupleAsdict(tuple):
            def _asdict(self):
                return {'from_asdict': list(self)}

        class DictAsdict(dict):
            def _asdict(self):
                return {'from_asdict': dict(self)}

        class ListBoth(list):
            def _asdict(self):
                return {'from_asdict': True}
            def for_json(self):
                return {'from_for_json': True}

        self.assertEqual(
            {'from_asdict': [10, 20]},
            json.loads(json.dumps(ListAsdict([10, 20]))))
        self.assertEqual(
            {'from_asdict': [1, 2]},
            json.loads(json.dumps(TupleAsdict((1, 2)))))
        self.assertEqual(
            {'from_asdict': {'x': 1}},
            json.loads(json.dumps(DictAsdict(x=1))))
        # Nested inside a plain list.
        self.assertEqual(
            [{'from_asdict': [10]}],
            json.loads(json.dumps([ListAsdict([10])])))
        # Nested inside a plain dict.
        self.assertEqual(
            {'k': {'from_asdict': [10]}},
            json.loads(json.dumps({'k': ListAsdict([10])})))
        # for_json must still outrank _asdict.
        self.assertEqual(
            {'from_for_json': True},
            json.loads(json.dumps(ListBoth([1]), for_json=True)))