Add compare url to task comment if params exists in payload [438394]

app/models/comment.rb

@@ -31,7 +31,8 @@ def self.from_github(payload)
            url+="/tree/#{branch_name}"
          end
 
-         text = ("Posted on Github: <a href=\"%s\">%s</a>\n\n" % [url, anchor])
+         compare = payload.has_key?('compare') ? (" <a href=\"%s\">(compare)</a>" % payload['compare']) : ''
+         text = ("Posted on Github: <a href=\"%s\">%s</a>%s\n\n" % [url, anchor, compare])
 
          commits.each do |commit|
             @author_name = commit['author']['name']

spec/controllers/hooks_controller_spec.rb

@@ -379,6 +379,7 @@ def post(payload = @payload_v2, hook = 'pivotal')
             "after": "de8251ff97ee194a289832576287d6f8ad74e3d0",
             "ref": "refs/heads/master",
             "pusher": {"email":"frank@teambox.com","name":"frank"},
+            "compare": "https://github.com/teambox/teambox/compare/41a212e^...hju8251",
             "repository": {
               "url": "http://github.com/defunkt/github",
               "name": "github",
@@ -519,7 +520,7 @@ def post(payload = @payload_v2, hook = 'pivotal')
         second_comment.target.should == @other_task
 
         expected_first = (<<-HTML).strip
-         Posted on Github: <a href=\"http://github.com/defunkt/github/tree/master\">github/refs/heads/master</a>
+         Posted on Github: <a href=\"http://github.com/defunkt/github/tree/master\">github/refs/heads/master</a> <a href=\"https://github.com/teambox/teambox/compare/41a212e^...hju8251\">(compare)</a>
 
 Chris Wanstrath - <a href=\"http://github.com/defunkt/github/commit/41a212ee83ca127e3c8cf465891ab7216a705f59\">Check this file, task</a>\n
 Mislav Marohnić - <a href=\"http://github.com/defunkt/github/commit/de8251ff97ee194a289832576287d6f8ad74e3d0\">Closing for task</a>
@@ -528,7 +529,7 @@ def post(payload = @payload_v2, hook = 'pivotal')
         first_comment.body.strip.should == expected_first.strip
 
         expected_second = (<<-HTML).strip
-         Posted on Github: <a href=\"http://github.com/defunkt/github/tree/master\">github/refs/heads/master</a>
+         Posted on Github: <a href=\"http://github.com/defunkt/github/tree/master\">github/refs/heads/master</a> <a href=\"https://github.com/teambox/teambox/compare/41a212e^...hju8251\">(compare)</a>
 
 Mislav Marohnić - <a href=\"http://github.com/defunkt/github/commit/hju8251ff97ee194a289832576287d6f89ui7978h\">Commit for different task</a>
         HTML