[1.2.X] Fixed the get_or_create tests for postgreSQL, by using

from datetime import date

from django.db import IntegrityError

from django.test import TestCase

from django.test import TransactionTestCase

from models import Person, ManualPrimaryKeyTest

class GetOrCreateTests(TestCase):

class GetOrCreateTests(TransactionTestCase):

    def test_get_or_create(self):

        p = Person.objects.create(

            first_name='John', last_name='Lennon', birthday=date(1940, 10, 9)