diff --git a/test/test_helper.rb b/test/test_helper.rb
index e58bc803b..cc205b0a0 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -46,6 +46,9 @@ class ActiveSupport::TestCase
 
     # check if jobs are proccessed
     if !Delayed::Job.all.empty?
+      Delayed::Job.where('failed_at != NULL').each {|job|
+        assert( false, "not processable job #{jobs.inspect}" )
+      }
       Delayed::Job.all.destroy_all
     end
   end
diff --git a/test/unit/session_enhanced_test.rb b/test/unit/session_enhanced_test.rb
index 3a40f3c20..9674e1449 100644
--- a/test/unit/session_enhanced_test.rb
+++ b/test/unit/session_enhanced_test.rb
@@ -155,7 +155,7 @@ class SessionEnhancedTest < ActiveSupport::TestCase
     assert( Sessions.thread_client_exists?(client_id3), 'check if client is running' )
 
     # check if session still exists after idle cleanup
-    sleep 6
+    sleep 8
     client_ids = Sessions.destory_idle_sessions(5)
 
     # check client sessions