Makes votes increase/decrease hot score

Debates already call update_attibutes in debates (to update cached
counters), so there is no need to do an “after_voted”: the comment’s
before_save call takes care of it.

spec/models/debate_spec.rb

@@ -184,35 +184,55 @@ describe Debate do
   describe '#hot_score' do
     let(:now) { Time.now }
 
-    it "gets bigger for newer debates" do
+    it "increases for newer debates" do
       old = create(:debate, :with_hot_score, created_at: now - 1.day)
       new = create(:debate, :with_hot_score, created_at: now)
       expect(new.hot_score).to be > old.hot_score
     end
 
-    it "gets bigger for debates with more comments" do
+    it "increases for debates with more comments" do
       more_comments = create(:debate, :with_hot_score, created_at: now, comments_count: 10)
       less_comments = create(:debate, :with_hot_score, created_at: now, comments_count: 1)
       expect(more_comments.hot_score).to be > less_comments.hot_score
     end
 
-    it "gets bigger for debates with more positive votes" do
+    it "increases for debates with more positive votes" do
       more_likes = create(:debate, :with_hot_score, created_at: now, cached_votes_total: 10, cached_votes_up: 5)
       less_likes = create(:debate, :with_hot_score, created_at: now, cached_votes_total: 10, cached_votes_up: 1)
       expect(more_likes.hot_score).to be > less_likes.hot_score
     end
 
-    it "gets bigger for debates with more confidence" do
+    it "increases for debates with more confidence" do
       more_confidence = create(:debate, :with_hot_score, created_at: now, cached_votes_total: 1000, cached_votes_up: 700)
       less_confidence = create(:debate, :with_hot_score, created_at: now, cached_votes_total: 10, cached_votes_up: 9)
       expect(more_confidence.hot_score).to be > less_confidence.hot_score
     end
 
-    it "decays older debates, even if they have more votes" do
+    it "decays in older debates, even if they have more votes" do
       older_more_voted = create(:debate, :with_hot_score, created_at: now - 2.days, cached_votes_total: 1000, cached_votes_up: 900)
       new_less_voted   = create(:debate, :with_hot_score, created_at: now, cached_votes_total: 10, cached_votes_up: 9)
       expect(new_less_voted.hot_score).to be > older_more_voted.hot_score
     end
+
+    describe 'actions which affect it' do
+      let(:debate) { create(:debate, :with_hot_score) }
+
+      it "increases with likes" do
+        previous = debate.hot_score
+        5.times { debate.register_vote(create(:user), true) }
+        expect(previous).to be < debate.hot_score
+      end
+
+      it "decreases with dislikes" do
+        debate.register_vote(create(:user), true)
+        previous = debate.hot_score
+        3.times { debate.register_vote(create(:user), false) }
+        expect(previous).to be > debate.hot_score
+      end
+    end
+
   end
 
+
+
 end