Explicitly setting names for stories in used page_sets

tools/perf/page_sets/story_set_unittest.py

 # Copyright 2014 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 os
 
 import page_sets
 
 from telemetry import decorators
 from telemetry import page
@@ skipping 20 matching lines @@
       if story_set_class is page_sets.ToughSchedulingCasesPageSet:
         continue
       story_set = story_set_class()
       for story in story_set:
         if isinstance(story, page.Page):
           self.assertFalse(
             story.synthetic_delays,
             'Page %s in page set %s has non empty synthetic delay. '
             'Synthetic delay is no longer supported. See crbug.com/508538.' %
             (story.display_name, story_set.Name()))
+
+  def testNoStorySetDefinedWithUnnamedStories(self):
+    for story_set_class in self.GetAllStorySetClasses(self.story_sets_dir,
+                                                      self.top_level_dir):
+      story_set = story_set_class()
+      for story in story_set:
+        self.assertTrue(story.name != '',

[nednguyen, 2017/06/13 18:55:25]

forgot to comment on this, instead of assertTrue(story.name != ''), it's better
to do:

assertTrue(story.name)

or you can also do assertTrue(story_set.verify_names)


But given that we gonna flip the switch & delete this soon, probably it isn't
worth fixing this.

+                        'stories must be named: ' + str(story_set_class))