Fixed #22490 -- Added tests for Feed.get_object().

AUTHORS

@@ -694,6 +694,7 @@ answer newbie questions, and generally made Django that much better:
     Nis Jørgensen <nis@superlativ.dk>
     Nowell Strite <https://nowell.strite.org/>
     Nuno Mariz <nmariz@gmail.com>
+    Octavio Peri <octaperi@gmail.com>
     oggie rob <oz.robharvey@gmail.com>
     oggy <ognjen.maric@gmail.com>
     Oliver Beattie <oliver@obeattie.com>

tests/syndication_tests/feeds.py

@@ -143,6 +143,26 @@ class TestLanguageFeed(TestRss2Feed):
     language = 'de'
 
 
+class TestGetObjectFeed(TestRss2Feed):
+    def get_object(self, request, entry_id):
+        return Entry.objects.get(pk=entry_id)
+
+    def items(self, obj):
+        return Article.objects.filter(entry=obj)
+
+    def item_link(self, item):
+        return '%sarticle/%s/' % (item.entry.get_absolute_url(), item.pk)
+
+    def item_comments(self, item):
+        return '%scomments' % self.item_link(item)
+
+    def item_description(self, item):
+        return 'Article description: %s' % item.title
+
+    def item_title(self, item):
+        return 'Title: %s' % item.title
+
+
 class NaiveDatesFeed(TestAtomFeed):
     """
     A feed with naive (non-timezone-aware) dates.

tests/syndication_tests/models.py

@@ -19,3 +19,8 @@ class Entry(models.Model):
 class Article(models.Model):
     title = models.CharField(max_length=200)
     entry = models.ForeignKey(Entry, models.CASCADE)
+    updated = models.DateTimeField()
+    published = models.DateTimeField()
+
+    class Meta:
+        ordering = ['updated']

tests/syndication_tests/tests.py

@@ -38,7 +38,12 @@ class FeedTestCase(TestCase):
             title='My last entry', updated=datetime.datetime(2013, 1, 20, 0, 0),
             published=datetime.datetime(2013, 3, 25, 20, 0)
         )
-        cls.a1 = Article.objects.create(title='My first article', entry=cls.e1)
+        cls.a1 = Article.objects.create(
+            title='My first article',
+            entry=cls.e1,
+            updated=datetime.datetime(1986, 11, 21, 9, 12, 18),
+            published=datetime.datetime(1986, 10, 21, 9, 12, 18),
+        )
 
     def assertChildNodes(self, elem, expected):
         actual = {n.nodeName for n in elem.childNodes}
@@ -522,3 +527,22 @@ class SyndicationFeedTest(FeedTestCase):
         for prefix in prefix_domain_mapping:
             with self.subTest(prefix=prefix):
                 self.assertEqual(views.add_domain(*prefix[0]), prefix[1])
+
+    def test_get_object(self):
+        response = self.client.get('/syndication/rss2/articles/%s/' % self.e1.pk)
+        doc = minidom.parseString(response.content)
+        feed = doc.getElementsByTagName('rss')[0]
+        chan = feed.getElementsByTagName('channel')[0]
+        items = chan.getElementsByTagName('item')
+
+        self.assertChildNodeContent(items[0], {
+            'comments': '/blog/1/article/1/comments',
+            'description': 'Article description: My first article',
+            'link': 'http://example.com/blog/1/article/1/',
+            'title': 'Title: My first article',
+            'pubDate': rfc2822_date(timezone.make_aware(self.a1.published, TZ)),
+        })
+
+    def test_get_non_existent_object(self):
+        response = self.client.get('/syndication/rss2/articles/0/')
+        self.assertEqual(response.status_code, 404)

tests/syndication_tests/urls.py

@@ -4,6 +4,7 @@ from . import feeds
 
 urlpatterns = [
     path('syndication/rss2/', feeds.TestRss2Feed()),
+    path('syndication/rss2/articles/<int:entry_id>/', feeds.TestGetObjectFeed()),
     path(
         'syndication/rss2/guid_ispermalink_true/',
         feeds.TestRss2FeedWithGuidIsPermaLinkTrue()),