FIX: don't count mentions in oneboxes

app/models/post_analyzer.rb

@@ -45,11 +45,12 @@ class PostAnalyzer
     return [] if @raw.blank?
     return @raw_mentions if @raw_mentions.present?
 
-    # strip quotes and code blocks
+    # strip quotes, code blocks and oneboxes
     cooked_stripped = cooked_document
     cooked_stripped.css("aside.quote").remove
     cooked_stripped.css("pre").remove
     cooked_stripped.css("code").remove
+    cooked_stripped.css(".onebox").remove
 
     results = cooked_stripped.to_html.scan(PrettyText.mention_matcher)
     @raw_mentions = results.uniq.map { |un| un.first.downcase.gsub!(/^@/, '') }

spec/models/post_analyzer_spec.rb

@@ -3,6 +3,7 @@ require 'spec_helper'
 describe PostAnalyzer do
 
   let(:default_topic_id) { 12 }
+  let(:url) { 'https://twitter.com/evil_trout/status/345954894420787200' }
 
   describe '#cook' do
     let(:post_analyzer) {PostAnalyzer.new nil, nil  }
@@ -11,10 +12,6 @@ describe PostAnalyzer do
     let(:options) { {} }
     let(:args) { [raw, options] }
 
-    let(:url) {
-      'https://twitter.com/evil_trout/status/345954894420787200'
-    }
-
     before { Oneboxer.stubs(:onebox) }
 
     it 'fetches the cached onebox for any urls in the post' do
@@ -198,6 +195,12 @@ describe PostAnalyzer do
       expect(post_analyzer.raw_mentions).to eq(['finn'])
     end
 
+    it "ignores oneboxes" do
+      post_analyzer = PostAnalyzer.new("Hello @Jake\n#{url}", default_topic_id)
+      post_analyzer.stubs(:cook).returns("<p>Hello <span class=\"mention\">@Jake</span><br><a href=\"https://twitter.com/evil_trout/status/345954894420787200\" class=\"onebox\" target=\"_blank\" rel=\"nofollow\">@Finn</a></p>")
+      expect(post_analyzer.raw_mentions).to eq(['jake'])
+    end
+
     it "handles underscore in username" do
       post_analyzer = PostAnalyzer.new("@Jake @Finn @Jake_Old", default_topic_id)
       expect(post_analyzer.raw_mentions).to eq(['jake', 'finn', 'jake_old'])