Add board locking, update tests, and update clean() methods

* Boards can be locked from allowing posts - this is can be useful for
  things like archived boards or locking down in the event of an
  emergency
* Some validation checks for new posts are from the reply/thread form to
  the Post model's clean() method
* Add some new tests, I've really been falling behind on those

Signed-off-by: Alek Ratzloff <alekratz@gmail.com>

tests/test_posts.py

@@ -1,10 +1,15 @@
+from datetime import timedelta
+from django.core.exceptions import ValidationError
 from django.test import TestCase
+from board.forms import PostForm, ReplyForm
 from board.models import Board, Post
 
 
 class BumpTestCase(TestCase):
     def setUp(self):
-        Board.objects.create(url="test", name="test")
+        Board.objects.create(
+            url="test", name="test", post_cooldown=timedelta(seconds=0)
+        )
 
     def test_bumping(self):
         board = Board.objects.get(url="test")
@@ -63,3 +68,53 @@ class BumpTestCase(TestCase):
         self.assertEquals(
             list(board.threads.order_by("-last_bump")), [post4, post3, post2, post1]
         )
+
+    def test_thread_sticky(self):
+        board = Board.objects.get(url="test")
+        self.assertEquals(board.threads.count(), 0)
+
+        board = Board.objects.get(url="test")
+        self.assertEquals(board.threads.count(), 0)
+        post1 = Post.objects.create(
+            board=board, text="test 1", ip="127.0.0.1", sticky=True
+        )
+        post2 = Post.objects.create(board=board, text="test 2", ip="127.0.0.1")
+        post3 = Post.objects.create(board=board, text="test 3", ip="127.0.0.1")
+        post4 = Post.objects.create(board=board, text="test 4", ip="127.0.0.1")
+
+        self.assertEquals(
+            list(board.threads.order_by("-sticky", "-last_bump")),
+            [post1, post4, post3, post2],
+        )
+
+        Post.objects.create(board=board, text="bump", ip="127.0.0.1", op=post3)
+        self.assertEquals(
+            list(board.threads.order_by("-sticky", "-last_bump")),
+            [post1, post3, post4, post2],
+        )
+
+    def test_thread_lock(self):
+        board = Board.objects.get(url="test")
+        op = Post.objects.create(board=board, text="test 1", ip="127.0.0.1", lock=True)
+        reply = Post(board=board, text="reply 1", op=op, ip="127.0.0.1")
+        self.assertRaises(ValidationError, reply.full_clean)
+
+        # Also, make sure that thread locks work after new posts are made
+        op = Post.objects.create(board=board, text="test 1", ip="127.0.0.1")
+        reply1 = Post(board=board, text="reply 1", op=op, ip="127.0.0.1")
+        reply1.full_clean()  # should not raise
+        op.lock = True
+        reply2 = Post(board=board, text="reply 2", op=op, ip="127.0.0.2")
+        self.assertRaises(ValidationError, reply2.full_clean)
+
+
+class BoardReadonlyTestCase(TestCase):
+    def setUp(self):
+        Board.objects.create(
+            url="test", name="test", post_cooldown=timedelta(seconds=0), readonly=True
+        )
+
+    def test_board_readonly(self):
+        board = Board.objects.get(url="test")
+        op = Post(board=board, text="test 1", ip="127.0.0.1")
+        self.assertRaises(ValidationError, op.full_clean)