[1.7.x] Made model_regress unpickling test CWD-independent

import datetime

from operator import attrgetter

import os

import pickle

import subprocess

import sys

import tempfile

import unittest

from django.core.exceptions import ValidationError

from django.core.files.temp import NamedTemporaryFile

from django.test import TestCase, skipUnlessDBFeature

from django.utils import six

from django.utils.timezone import get_fixed_timezone

            article_text="This is an article",

        )

        with tempfile.NamedTemporaryFile(mode='w+', suffix=".py", dir='.', delete=True) as script:

        with NamedTemporaryFile(mode='w+', suffix=".py", dir='.') as script:

            script.write(script_template % pickle.dumps(a))

            script.flush()

            try:

                result = subprocess.check_output(['python', script.name])

                result = subprocess.check_output(

                    [sys.executable, script.name],

                    env={

                        # Needed to run test outside of tests directory

                        str('PYTHONPATH'): os.pathsep.join(sys.path),

                        # Needed on Windows because http://bugs.python.org/issue8557

                        str('PATH'): os.environ['PATH'],

                    }

                )

            except subprocess.CalledProcessError:

                self.fail("Unable to reload model pickled data")

        self.assertEqual(result.strip().decode(), "Some object")