Add some tests for some of the more complicated behavior in the code

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

tests/test_posts.py

@@ -0,0 +1,65 @@
+from django.test import TestCase
+from board.models import Board, Post
+
+
+class BumpTestCase(TestCase):
+    def setUp(self):
+        Board.objects.create(url="test", name="test")
+
+    def test_bumping(self):
+        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")
+        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("-last_bump")), [post4, post3, post2, post1]
+        )
+
+        Post.objects.create(board=board, text="bump", ip="127.0.0.1", op=post3)
+        self.assertEquals(
+            list(board.threads.order_by("-last_bump")), [post3, post4, post2, post1]
+        )
+
+        Post.objects.create(board=board, text="bump", ip="127.0.0.1", op=post2)
+        self.assertEquals(
+            list(board.threads.order_by("-last_bump")), [post2, post3, post4, post1]
+        )
+
+        Post.objects.create(board=board, text="bump", ip="127.0.0.1", op=post1)
+        self.assertEquals(
+            list(board.threads.order_by("-last_bump")), [post1, post2, post3, post4]
+        )
+
+    def test_no_bumping(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")
+        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("-last_bump")), [post4, post3, post2, post1]
+        )
+
+        Post.objects.create(
+            board=board, text="bump", ip="127.0.0.1", op=post3, bump=False
+        )
+        self.assertEquals(
+            list(board.threads.order_by("-last_bump")), [post4, post3, post2, post1]
+        )
+
+        # thread that has been sunk
+        post2.bump = False
+        Post.objects.create(
+            board=board, text="bump", ip="127.0.0.1", op=post2, bump=True
+        )
+        self.assertEquals(
+            list(board.threads.order_by("-last_bump")), [post4, post3, post2, post1]
+        )