diff --git a/test/integration/layout_test.rb b/test/integration/layout_test.rb
index 34a29354c..557ce4663 100644
--- a/test/integration/layout_test.rb
+++ b/test/integration/layout_test.rb
@@ -85,6 +85,16 @@ class LayoutTest < ActionController::IntegrationTest
       get '/issues'
       assert_not_include "/javascripts/i18n/jquery.ui.datepicker", response.body
     end
+
+    with_settings :default_language => 'zh' do
+      get '/issues'
+      assert_include "/javascripts/i18n/jquery.ui.datepicker-zh-CN.js", response.body
+    end
+
+    with_settings :default_language => 'zh-TW' do
+      get '/issues'
+      assert_include "/javascripts/i18n/jquery.ui.datepicker-zh-TW.js", response.body
+    end
   end
 
   def test_search_field_outside_project_should_link_to_global_search