Implement forum topic voting and tag change pruning (#3580)

test/controllers/forum_post_votes_controller_test.rb

@@ -0,0 +1,36 @@
+require 'test_helper'
+
+class ForumPostVotesControllerTest < ActionDispatch::IntegrationTest
+  context "The forum post votes controller" do
+    setup do
+      @user = create(:user)
+
+      as_user do
+        @forum_topic = create(:forum_topic)
+        @forum_post = create(:forum_post, topic: @forum_topic)
+      end
+    end
+
+    should "allow voting" do
+      assert_difference("ForumPostVote.count") do
+        post_auth forum_post_votes_path(forum_post_id: @forum_post.id), @user, params: {forum_post_vote: {score: 1}, format: "js"}
+      end
+      assert_response :success
+    end
+
+    context "when deleting" do
+      setup do
+        as_user do
+          @forum_post_vote = @forum_post.votes.create(score: 1)
+        end
+      end
+
+      should "allow removal" do
+        assert_difference("ForumPostVote.count", -1) do
+          delete_auth forum_post_votes_path(forum_post_id: @forum_post.id), @user, params: {format: "js"}
+        end
+        assert_response :success
+      end
+    end
+  end
+end