Fixed the tests. Added exists() method for the post.

boards/models.py

@@ -45,6 +45,11 b' class PostManager(models.Manager):'
 
         return [opening_post, replies]
 
+    def exists(self, post_id):
+        posts = Post.objects.filter(id = post_id)
+
+        return len(posts) == 0
+
 
 class Tag(models.Model):
     """
@@ -54,6 +59,7 b' class Tag(models.Model):'
 
     name = models.CharField(max_length = 100)
 
+
 class Post(models.Model):
     """A post is a message."""
 

boards/tests.py

@@ -3,6 +3,7 b' import boards'
 
 from boards.models import Post
 
+
 class BoardTests(TestCase):
     
     def create_post(self):
@@ -17,14 +18,16 b' class BoardTests(TestCase):'
 
     def test_delete_post(self):
         post = self.create_post()
+        post_id = post.id
 	
         Post.objects.delete_post(post)
 
-        self.assertIsNone(post)
+        self.assertTrue(Post.objects.exists(post_id))
 
     def test_delete_posts_by_ip(self):
         post = self.create_post()
+        post_id = post.id
 
         Post.objects.delete_posts_by_ip('0.0.0.0')
 
-        self.assertIsNone(post)
+        self.assertTrue(Post.objects.exists(post_id))