import datetime

from django.db import models

from django.test import TestCase

from django.test.utils import isolate_apps

from .models import InternationalArticle

class SimpleTests(TestCase):

    def test_international(self):

        a = InternationalArticle.objects.create(

            headline="Girl wins €12.500 in lottery",

            pub_date=datetime.datetime(2005, 7, 28),

        )

        self.assertEqual(str(a), "Girl wins €12.500 in lottery")

    @isolate_apps("str")

    def test_defaults(self):

        """

        The default implementation of __str__ and __repr__ should return

        instances of str.

        """

        class Default(models.Model):

            pass

        obj = Default()

        # Explicit call to __str__/__repr__ to make sure str()/repr() don't

        # coerce the returned value.

        self.assertIsInstance(obj.__str__(), str)

        self.assertIsInstance(obj.__repr__(), str)

        self.assertEqual(str(obj), "Default object (None)")

        self.assertEqual(repr(obj), "<Default: Default object (None)>")

        obj2 = Default(pk=100)

        self.assertEqual(str(obj2), "Default object (100)")

        self.assertEqual(repr(obj2), "<Default: Default object (100)>")