diff --git a/addons/resource/resource.py b/addons/resource/resource.py
index 1a0ea76c71f..01c1ae452e5 100644
--- a/addons/resource/resource.py
+++ b/addons/resource/resource.py
@@ -643,7 +643,7 @@ class resource_calendar_attendance(osv.osv):
         'date_to': fields.date('End Date'),
         'hour_from' : fields.float('Work from', required=True, help="Start and End time of working.", select=True),
         'hour_to' : fields.float("Work to", required=True),
-        'calendar_id' : fields.many2one("resource.calendar", "Resource's Calendar", required=True),
+        'calendar_id' : fields.many2one("resource.calendar", "Resource's Calendar", required=True, ondelete='cascade'),
     }
 
     _order = 'dayofweek, hour_from'
diff --git a/openerp/tests/common.py b/openerp/tests/common.py
index a9a6c1261d0..07f95eac800 100644
--- a/openerp/tests/common.py
+++ b/openerp/tests/common.py
@@ -362,7 +362,7 @@ class HttpCase(TransactionCase):
                     _logger.info("phantomjs: %s", line)
 
                 if line == "ok":
-                    break
+                    return True
 
     def phantom_run(self, cmd, timeout):
         _logger.info('phantom_run executing %s', ' '.join(cmd))
@@ -375,8 +375,9 @@ class HttpCase(TransactionCase):
             phantom = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=None)
         except OSError:
             raise unittest.SkipTest("PhantomJS not found")
+        result = False
         try:
-            self.phantom_poll(phantom, timeout)
+            result = self.phantom_poll(phantom, timeout)
         finally:
             # kill phantomjs if phantom.exit() wasn't called in the test
             if phantom.poll() is None:
@@ -385,6 +386,10 @@ class HttpCase(TransactionCase):
             self._wait_remaining_requests()
             # we ignore phantomjs return code as we kill it as soon as we have ok
             _logger.info("phantom_run execution finished")
+            self.assertTrue(
+                result,
+                "PhantomJS test completed without reporting success; "
+                "the log may contain errors or hints.")
 
     def _wait_remaining_requests(self):
         t0 = int(time.time())