selenium : Assert that test result is empty at start

slapos/recipe/seleniumrunner/testrunner.py

@@ -47,8 +47,10 @@ def run(args):
     # Clean old test results if any
     openUrl('%s/TestTool_cleanUpTestResults?__ac_name=%s&__ac_password=%s' % (
         config['base_url'], config['user'], config['password']))
-    # TODO assert getresult is None
-
+    if getStatus(config['base_url']) is not '':
+      print("ERROR : Impossible to clean old test result(s)")
+    else:
+      # Environment is ready, we launch test.
       os.environ['DISPLAY'] = config['display']
       xvfb = Xvfb(config['etc_directory'], config['xvfb_binary'])
       profile_dir = os.path.join(config['etc_directory'], 'profile')