import datetime

from django.db import DEFAULT_DB_ALIAS

from django.test import TestCase

from django.utils import tzinfo

from models import Donut, RumBaba

from django.conf import settings

class DataTypesTestCase(TestCase):

    def test_boolean_type(self):

        d = Donut(name='Apple Fritter')

        self.assertFalse(d.is_frosted)

        self.assertTrue(d.has_sprinkles is None)

        d.has_sprinkles = True

        self.assertTrue(d.has_sprinkles)

        d.save()

        d2 = Donut.objects.get(name='Apple Fritter')

        self.assertFalse(d2.is_frosted)

        self.assertTrue(d2.has_sprinkles)

    def test_date_type(self):

        d = Donut(name='Apple Fritter')

        d.baked_date = datetime.date(year=1938, month=6, day=4)

        d.baked_time = datetime.time(hour=5, minute=30)

        d.consumed_at = datetime.datetime(year=2007, month=4, day=20, hour=16, minute=19, second=59)

        d.save()

        d2 = Donut.objects.get(name='Apple Fritter')

        self.assertEqual(d2.baked_date, datetime.date(1938, 6, 4))

        self.assertEqual(d2.baked_time, datetime.time(5, 30))

        self.assertEqual(d2.consumed_at, datetime.datetime(2007, 4, 20, 16, 19, 59))

    def test_time_field(self):

        #Test for ticket #12059: TimeField wrongly handling datetime.datetime object.

        d = Donut(name='Apple Fritter')

        d.baked_time = datetime.datetime(year=2007, month=4, day=20, hour=16, minute=19, second=59)

        d.save()

        d2 = Donut.objects.get(name='Apple Fritter')

        self.assertEqual(d2.baked_time, datetime.time(16, 19, 59))

    def test_year_boundaries(self):

        """Year boundary tests (ticket #3689)"""

        d = Donut.objects.create(name='Date Test 2007',

             baked_date=datetime.datetime(year=2007, month=12, day=31),

             consumed_at=datetime.datetime(year=2007, month=12, day=31, hour=23, minute=59, second=59))

        d1 = Donut.objects.create(name='Date Test 2006',

            baked_date=datetime.datetime(year=2006, month=1, day=1),

            consumed_at=datetime.datetime(year=2006, month=1, day=1))

        self.assertEqual("Date Test 2007",

                         Donut.objects.filter(baked_date__year=2007)[0].name)

        self.assertEqual("Date Test 2006",

                         Donut.objects.filter(baked_date__year=2006)[0].name)

        d2 = Donut.objects.create(name='Apple Fritter',

            consumed_at = datetime.datetime(year=2007, month=4, day=20, hour=16, minute=19, second=59))

        self.assertEqual([u'Apple Fritter', u'Date Test 2007'],

            list(Donut.objects.filter(consumed_at__year=2007).order_by('name').values_list('name', flat=True)))

        self.assertEqual(0, Donut.objects.filter(consumed_at__year=2005).count())

        self.assertEqual(0, Donut.objects.filter(consumed_at__year=2008).count())

    def test_textfields_unicode(self):

        """Regression test for #10238: TextField values returned from the

        database should be unicode."""

        d = Donut.objects.create(name=u'Jelly Donut', review=u'Outstanding')

        newd = Donut.objects.get(id=d.id)

        self.assert_(isinstance(newd.review, unicode))

    def test_tz_awareness_mysql(self):

        """Regression test for #8354: the MySQL backend should raise an error

        if given a timezone-aware datetime object."""

        if settings.DATABASES[DEFAULT_DB_ALIAS]['ENGINE'] == 'django.db.backends.mysql':

            dt = datetime.datetime(2008, 8, 31, 16, 20, tzinfo=tzinfo.FixedOffset(0))

            d = Donut(name='Bear claw', consumed_at=dt)

            self.assertRaises(ValueError, d.save)

            # ValueError: MySQL backend does not support timezone-aware datetimes.

    def test_datefield_auto_now_add(self):

        """Regression test for #10970, auto_now_add for DateField should store

        a Python datetime.date, not a datetime.datetime"""

        b = RumBaba.objects.create()

        # Verify we didn't break DateTimeField behavior

        self.assert_(isinstance(b.baked_timestamp, datetime.datetime))

        # We need to test this this way because datetime.datetime inherits

        # from datetime.date:

        self.assert_(isinstance(b.baked_date, datetime.date) and not isinstance(b.baked_date, datetime.datetime))