Fixed #16340 -- Made `get_or_create()` re-raise any `IntegrityError` with its...

import copy

import itertools

import sys

from django.db import connections, router, transaction, IntegrityError

from django.db.models.fields import AutoField

                return obj, True

            except IntegrityError, e:

                transaction.savepoint_rollback(sid, using=self.db)

                exc_info = sys.exc_info()

                try:

                    return self.get(**lookup), False

                except self.model.DoesNotExist:

                    raise e

                    # Re-raise the IntegrityError with its original traceback.

                    raise exc_info[1], None, exc_info[2]

    def latest(self, field_name=None):

        """

from __future__ import absolute_import

from datetime import date

import traceback

from django.db import IntegrityError

from django.test import TestCase

            ManualPrimaryKeyTest.objects.get_or_create, id=1, data="Different"

        )

        self.assertEqual(ManualPrimaryKeyTest.objects.get(id=1).data, "Original")

        # get_or_create should raise IntegrityErrors with the full traceback.

        # This is tested by checking that a known method call is in the traceback.

        # We cannot use assertRaises/assertRaises here because we need to inspect

        # the actual traceback. Refs #16340.

        try:

            ManualPrimaryKeyTest.objects.get_or_create(id=1, data="Different")

        except IntegrityError, e:

            formatted_traceback = traceback.format_exc()

            self.assertIn('obj.save', formatted_traceback)