Avoid killing the test database teardown.

Inserting a MB into the test database kills the _fixture_teardown method when it tries to roll back transactions.

djangobb_forum/models.py

@@ -588,6 +588,8 @@ class PostStatus(models.Model):
     MARKED_SPAM = 'marked_spam'
     MARKED_HAM = 'marked_ham'
 
+    AKISMET_MAX_SIZE = 1024*500
+
     post = models.OneToOneField(Post, db_index=True)
     state = FSMField(default=UNREVIEWED, db_index=True)
     topic = models.ForeignKey(Topic) # Original topic
@@ -681,7 +683,7 @@ class PostStatus(models.Model):
         Truncate the post body to the largest allowed string size. Use size, not
         length, since the Akismet server checks size, not length.
         """
-        return self.post.body.encode('utf-8')[:1024*500].decode('utf-8', 'ignore')
+        return self.post.body.encode('utf-8')[:self.AKISMET_MAX_SIZE].decode('utf-8', 'ignore')
 
     def _comment_check(self):
         """

djangobb_forum/tests/test_spam.py

@@ -154,13 +154,15 @@ class ForumSpamTests(TestCase):
     def test_content_truncated(self):
         """
         Content larger than 0.5MB shouldn't be sent up to Akismet, which rejects
-        anything too big.
+        anything too big.  For the test, we reduce the cap, since the test
+        database seems to have issues tearing down when that much data is present.
         """
-        huge_content = ":lol:"*1024*1024
+        huge_content = ":lol:"*1024
         huge_post = Post.objects.create(
             topic=self.test_topic, user=self.user, body=huge_content,
             body_html="<p>%s</p>"%huge_content)
         huge_post_status = PostStatus.objects.create_for_post(huge_post)
+        huge_post_status.AKISMET_MAX_SIZE = 512
         self.assertGreater(len(huge_content), len(huge_post_status.to_akismet_content()))
 
     def test_content_untruncated(self):