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/get_latest/models.py

@@ -0,0 +1,43 @@
+"""
+8. get_latest_by
+
+Models can have a ``get_latest_by`` attribute, which should be set to the name
+of a DateField or DateTimeField. If ``get_latest_by`` exists, the model's
+module will get a ``get_latest()`` function, which will return the latest
+object in the database according to that field. "Latest" means "having the
+date farthest into the future."
+"""
+
+from django.core import meta
+
+class Article(meta.Model):
+    headline = meta.CharField(maxlength=100)
+    pub_date = meta.DateTimeField()
+    class META:
+        get_latest_by = 'pub_date'
+
+    def __repr__(self):
+        return self.headline
+
+API_TESTS = """
+# Because no Articles exist yet, get_latest() raises ArticleDoesNotExist.
+>>> Article.objects.get_latest()
+Traceback (most recent call last):
+    ...
+DoesNotExist: Article does not exist for {'order_by': ('-pub_date',), 'limit': 1}
+
+# Create a couple of Articles.
+>>> from datetime import datetime
+>>> a1 = Article(id=None, headline='Article 1', pub_date=datetime(2005, 7, 26))
+>>> a1.save()
+>>> a2 = Article(id=None, headline='Article 2', pub_date=datetime(2005, 7, 27))
+>>> a2.save()
+>>> a3 = Article(id=None, headline='Article 3', pub_date=datetime(2005, 7, 27))
+>>> a3.save()
+>>> a4 = Article(id=None, headline='Article 4', pub_date=datetime(2005, 7, 28))
+>>> a4.save()
+
+# Get the latest Article.
+>>> Article.objects.get_latest()
+Article 4
+"""