[telemetry] test_runner and run_benchmarks

tools/telemetry/telemetry/page/page_test.py

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 import logging
 
 from telemetry.core import util
 from telemetry.page import gtest_test_results
 from telemetry.page import page_test_results
 from telemetry.page.actions import all_page_actions
 from telemetry.page.actions import page_action
@@ skipping 129 matching lines @@
                       choices=self.output_format_choices,
                       help='Output format. Defaults to "%%default". '
                       'Can be %s.' % ', '.join(self.output_format_choices))
 
   @property
   def output_format_choices(self):
     """Allowed output formats. The default is the first item in the list."""
     return ['gtest', 'none']
 
   def PrepareResults(self, options):
+    if not hasattr(options, 'output_format'):
+      options.output_format = self.output_format_choices[0]
+
     if options.output_format == 'gtest':
       return gtest_test_results.GTestTestResults()
     elif options.output_format == 'none':
       return page_test_results.PageTestResults()
     else:
       # Should never be reached. The parser enforces the choices.
       raise Exception('Invalid --output-format "%s". Valid choices are: %s'
                       % (options.output_format,
                          ', '.join(self.output_format_choices)))
 
@@ skipping 24 matching lines @@
         finally:
           self.DidRunAction(page, tab, action)
 
       # Closing the connections periodically is needed; otherwise we won't be
       # able to open enough sockets, and the pages will time out.
       util.CloseConnections(tab)
 
   @property
   def action_name_to_run(self):
     return self._action_name_to_run