correct failing specs

app/controllers/admin/dashboard_controller.rb

@@ -1,19 +1,13 @@
 class Admin::DashboardController < Admin::AdminController
 
   def index
-    # see https://github.com/rails/rails/issues/8167
-    # TODO: after upgrading to Rails 4, try to remove "if cache_classes"
-    if Discourse::Application.config.cache_classes
-      dashboard_data = Rails.cache.fetch("admin-dashboard-data-#{Discourse::VERSION::STRING}", expires_in: 1.hour) do
-        AdminDashboardData.fetch_all.as_json
-      end
-      render json: dashboard_data
-    else
-      render_json_dump AdminDashboardData.fetch_all
+    dashboard_data = Rails.cache.fetch("admin-dashboard-data-#{Discourse::VERSION::STRING}", expires_in: 1.hour) do
+      AdminDashboardData.fetch_all.as_json
     end
+    render json: dashboard_data
   end
 
   def problems
     render_json_dump({problems: AdminDashboardData.fetch_problems})
   end
-end
+end

spec/controllers/admin/dashboard_controller_spec.rb

@@ -1,6 +1,12 @@
 require 'spec_helper'
+require_dependency 'discourse_version_check'
 
 describe Admin::DashboardController do
+  before do
+    #NOTE: Rails.cache should be blanked between tests, at the moment we can share state with it
+    # that is seriously bust on quite a few levels
+    Rails.cache.delete("admin-dashboard-data-#{Discourse::VERSION::STRING}")
+  end
 
   it "is a subclass of AdminController" do
     (Admin::DashboardController < Admin::AdminController).should be_true
@@ -81,4 +87,4 @@ describe Admin::DashboardController do
       end
     end
   end
-end
+end