[System Health] Create first System Health media user stories.

tools/perf/page_sets/system_health/media_stories.py

+# Copyright 2016 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.
+
+from page_sets.system_health import platforms
+from page_sets.system_health import system_health_story
+
+from page_sets.login_helpers import google_login
+from page_sets.login_helpers import pandora_login
+
+
+class _MediaStory(system_health_story.SystemHealthStory):
+  """Abstract base class for media System Health user stories."""
+
+  ABSTRACT_STORY = True
+  SUPPORTED_PLATFORMS = platforms.DESKTOP_ONLY
+  PLAY_DURATION = 20
+  PLAY_SELECTOR = NotImplemented
+  STOP_SELECTOR = NotImplemented
+  TIME_SELECTOR = NotImplemented
+
+  def RunPageInteractions(self, action_runner):
+    self._NavigateToMedia(action_runner)
+    # Play Media.
+    if self.PLAY_SELECTOR:
+      self._WaitForAndClickElement(action_runner, self.PLAY_SELECTOR)
+    self._WaitForPlayTime(action_runner)
+    # Stop media.
+    self._WaitForAndClickElement(action_runner, self.STOP_SELECTOR)
+
+  def _NavigateToMedia(self, action_runner):
+    raise NotImplementedError
+
+  def _WaitForAndClickElement(self, action_runner, element_function,
+                              is_selector=True):

[petrcermak, 2016/09/22 17:10:48]

As far as I can tell, you never pass is_selector=False, so please remove the
argument. I suggest you then rename the argument to "selector" and do:

element_function = 'document.querySelector("%s")' % selector

[rnephew (Reviews Here), 2016/09/22 17:28:50]

Done.

+    if is_selector:
+      element_function = 'document.querySelector("%s")' % element_function
+    action_runner.WaitForElement(element_function=element_function)
+    action_runner.ClickElement(element_function=element_function)
+
+  def _WaitForPlayTime(self, action_runner):
+    action_runner.Wait(self.PLAY_DURATION)
+    while self._GetTimeInSeconds(action_runner) < self.PLAY_DURATION:
+      action_runner.Wait(
+          self.PLAY_DURATION - self._GetTimeInSeconds(action_runner))
+
+  def _GetTimeInSeconds(self, action_runner):
+    time_funct = (

[petrcermak, 2016/09/22 17:10:48]

supernit: "function" is typically abbreviated to "func" (see
https://cs.chromium.org/search/?q=func%5Cb vs
https://cs.chromium.org/search/?q=funct%5Cb).

[rnephew (Reviews Here), 2016/09/22 17:28:50]

Done.

+        'document.querySelector("%s").textContent' % self.TIME_SELECTOR)
+    minutes, seconds = action_runner.EvaluateJavaScript(time_funct).split(':')
+    return int(minutes * 60 + seconds)
+
+
+################################################################################
+# Audio stories.
+################################################################################
+
+
+class GooglePlayMusicDesktopStory(_MediaStory):
+  NAME = 'play:media:google_play_music'
+  URL = 'https://music.google.com'
+
+  PLAY_SELECTOR = '.x-scope.paper-fab-0'
+  STOP_SELECTOR = '.style-scope.sj-play-button'
+  TIME_SELECTOR = '#time-container-current'
+  SEARCH_SELECTOR = '.title.fade-out.tooltip'
+  NAVIGATE_SELECTOR = '.description.tooltip.fade-out'
+
+  def _Login(self, action_runner):
+    google_login.LoginGoogleAccount(action_runner, 'googletest',
+                                    self.credentials_path)
+
+  def _NavigateToMedia(self, action_runner):
+    # Clicks on Today's top hits.
+    action_runner.Wait(1) # Add 1 second wait to make the browsing realistic.

[petrcermak, 2016/09/22 17:10:48]

nit: there should be 2 spaces before "#" (see
http://google.github.io/styleguide/pyguide.html#Comments). This also applies to
lines 78, 90, 94 and 112.

[rnephew (Reviews Here), 2016/09/22 17:28:50]

Done.

+    self._WaitForAndClickElement(action_runner, self.SEARCH_SELECTOR)
+    # Clicks on playlist.
+    action_runner.Wait(1) # Add 1 second wait to make the browsing realistic.
+    self._WaitForAndClickElement(action_runner, self.NAVIGATE_SELECTOR)
+
+
+class SoundCloudDesktopStory(_MediaStory):
+  NAME = 'play:media:soundcloud'
+  URL = 'https://soundcloud.com'
+
+  PLAY_SELECTOR = '.sc-button-play.playButton.sc-button.sc-button-xlarge'
+  STOP_SELECTOR = '.playControl.playControls__icon.sc-ir.playing'
+  TIME_SELECTOR = '.playbackTimeline__timePassed>span[aria-hidden=true]'
+  SEARCH_SELECTOR = '.headerSearch'
+  SEARCH_QUERY = 'SSmooth Jazz' # First S for some reason gets ommited.
+
+  def _NavigateToMedia(self, action_runner):
+    self._WaitForAndClickElement(action_runner, self.SEARCH_SELECTOR)
+    action_runner.Wait(1) # Add 1 second wait to make the browsing realistic.
+    action_runner.EnterText(self.SEARCH_QUERY)
+    action_runner.PressKey('Return')
+
+
+class PandoraDesktopStory(_MediaStory):
+  NAME = 'play:media:pandora'
+  URL = 'https://pandora.com'
+
+  PLAY_SELECTOR = None
+  STOP_SELECTOR = '.pauseButton'
+  TIME_SELECTOR = '.elapsedTime'
+  SEARCH_SELECTOR = '.searchInput'
+
+  def _Login(self, action_runner):
+    pandora_login.LoginAccount(action_runner, 'pandora', self.credentials_path)
+
+  def _NavigateToMedia(self, action_runner):
+    pass # Audio autoplays on Pandora, no need to search.