magic-removal: Moved model unit tests from 'testapp' package into 'modeltests' package, with each model test getting its own app

git-svn-id: http://code.djangoproject.com/svn/django/branches/magic-removal@1606 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/modeltests/one_to_one/models.py

@@ -0,0 +1,80 @@
+"""
+10. One-to-one relationships
+
+To define a one-to-one relationship, use ``OneToOneField()``.
+
+In this example, a ``Place`` optionally can be a ``Restaurant``.
+"""
+
+from django.core import meta
+
+class Place(meta.Model):
+    name = meta.CharField(maxlength=50)
+    address = meta.CharField(maxlength=80)
+
+    def __repr__(self):
+        return "%s the place" % self.name
+
+class Restaurant(meta.Model):
+    place = meta.OneToOneField(Place)
+    serves_hot_dogs = meta.BooleanField()
+    serves_pizza = meta.BooleanField()
+
+    def __repr__(self):
+        return "%s the restaurant" % self.get_place().name
+
+class Waiter(meta.Model):
+    restaurant = meta.ForeignKey(Restaurant)
+    name = meta.CharField(maxlength=50)
+
+    def __repr__(self):
+        return "%s the waiter at %r" % (self.name, self.get_restaurant())
+
+API_TESTS = """
+# Create a couple of Places.
+>>> p1 = Place(name='Demon Dogs', address='944 W. Fullerton')
+>>> p1.save()
+>>> p2 = Place(name='Ace Hardware', address='1013 N. Ashland')
+>>> p2.save()
+
+# Create a Restaurant. Pass the ID of the "parent" object as this object's ID.
+>>> r = Restaurant(place=p1, serves_hot_dogs=True, serves_pizza=False)
+>>> r.save()
+
+# A Restaurant can access its place.
+>>> r.get_place()
+Demon Dogs the place
+
+# A Place can access its restaurant, if available.
+>>> p1.get_restaurant()
+Demon Dogs the restaurant
+
+# p2 doesn't have an associated restaurant.
+>>> p2.get_restaurant()
+Traceback (most recent call last):
+    ...
+DoesNotExist: Restaurant does not exist for {'place__id__exact': ...}
+
+# Restaurant.objects.get_list() just returns the Restaurants, not the Places.
+>>> Restaurant.objects.get_list()
+[Demon Dogs the restaurant]
+
+# Place.objects.get_list() returns all Places, regardless of whether they have
+# Restaurants.
+>>> Place.objects.get_list(order_by=['name'])
+[Ace Hardware the place, Demon Dogs the place]
+
+>>> Restaurant.objects.get_object(place__id__exact=1)
+Demon Dogs the restaurant
+>>> Restaurant.objects.get_object(pk=1)
+Demon Dogs the restaurant
+
+# Add a Waiter to the Restaurant.
+>>> w = r.add_waiter(name='Joe')
+>>> w.save()
+>>> w
+Joe the waiter at Demon Dogs the restaurant
+
+>>> r = Restaurant.objects.get_object(pk=1)
+>>> r.delete()
+"""