[1.2.X] Migrated the custom_managers tests. Thanks to Alex Gaynor.

    def __unicode__(self):

        return self.name

__test__ = {'API_TESTS':"""

>>> p1 = Person(first_name='Bugs', last_name='Bunny', fun=True)

>>> p1.save()

>>> p2 = Person(first_name='Droopy', last_name='Dog', fun=False)

>>> p2.save()

>>> Person.objects.get_fun_people()

[<Person: Bugs Bunny>]

# The RelatedManager used on the 'books' descriptor extends the default manager

>>> from modeltests.custom_managers.models import PublishedBookManager

>>> isinstance(p2.books, PublishedBookManager)

True

>>> b1 = Book(title='How to program', author='Rodney Dangerfield', is_published=True)

>>> b1.save()

>>> b2 = Book(title='How to be smart', author='Albert Einstein', is_published=False)

>>> b2.save()

# The default manager, "objects", doesn't exist,

# because a custom one was provided.

>>> Book.objects

Traceback (most recent call last):

    ...

AttributeError: type object 'Book' has no attribute 'objects'

# The RelatedManager used on the 'authors' descriptor extends the default manager

>>> from modeltests.custom_managers.models import PersonManager

>>> isinstance(b2.authors, PersonManager)

True

>>> Book.published_objects.all()

[<Book: How to program>]

>>> c1 = Car(name='Corvette', mileage=21, top_speed=180)

>>> c1.save()

>>> c2 = Car(name='Neon', mileage=31, top_speed=100)

>>> c2.save()

>>> Car.cars.order_by('name')

[<Car: Corvette>, <Car: Neon>]

>>> Car.fast_cars.all()

[<Car: Corvette>]

# Each model class gets a "_default_manager" attribute, which is a reference

# to the first manager defined in the class. In this case, it's "cars".

>>> Car._default_manager.order_by('name')

[<Car: Corvette>, <Car: Neon>]

"""}

from django.test import TestCase

from models import Person, Book, Car, PersonManager, PublishedBookManager

class CustomManagerTests(TestCase):

    def test_manager(self):

        p1 = Person.objects.create(first_name="Bugs", last_name="Bunny", fun=True)

        p2 = Person.objects.create(first_name="Droopy", last_name="Dog", fun=False)

        self.assertQuerysetEqual(

            Person.objects.get_fun_people(), [

                "Bugs Bunny"

            ],

            unicode

        )

        # The RelatedManager used on the 'books' descriptor extends the default

        # manager

        self.assertTrue(isinstance(p2.books, PublishedBookManager))

        b1 = Book.published_objects.create(

            title="How to program", author="Rodney Dangerfield", is_published=True

        )

        b2 = Book.published_objects.create(

            title="How to be smart", author="Albert Einstein", is_published=False

        )

        # The default manager, "objects", doesn't exist, because a custom one

        # was provided.

        self.assertRaises(AttributeError, lambda: Book.objects)

        # The RelatedManager used on the 'authors' descriptor extends the

        # default manager

        self.assertTrue(isinstance(b2.authors, PersonManager))

        self.assertQuerysetEqual(

            Book.published_objects.all(), [

                "How to program",

            ],

            lambda b: b.title

        )

        c1 = Car.cars.create(name="Corvette", mileage=21, top_speed=180)

        c2 = Car.cars.create(name="Neon", mileage=31, top_speed=100)

        self.assertQuerysetEqual(

            Car.cars.order_by("name"), [

                "Corvette",

                "Neon",

            ],

            lambda c: c.name

        )

        self.assertQuerysetEqual(

            Car.fast_cars.all(), [

                "Corvette",

            ],

            lambda c: c.name

        )

        # Each model class gets a "_default_manager" attribute, which is a

        # reference to the first manager defined in the class. In this case,

        # it's "cars".

        self.assertQuerysetEqual(

            Car._default_manager.order_by("name"), [

                "Corvette",

                "Neon",

            ],

            lambda c: c.name

        )