Basic android app implementation

tools/telemetry/telemetry/user_story/android/shared_app_state.py

Index: tools/telemetry/telemetry/user_story/android/shared_app_state.py
diff --git a/tools/telemetry/telemetry/user_story/android/shared_app_state.py b/tools/telemetry/telemetry/user_story/android/shared_app_state.py
new file mode 100644
index 0000000000000000000000000000000000000000..bfb87dbe005ed8fad36cfff4b7c4b9088bd64ad1
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+++ b/tools/telemetry/telemetry/user_story/android/shared_app_state.py
@@ -0,0 +1,79 @@
+# 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
+
+from telemetry.core import android_app
+from telemetry.core import platform
+from telemetry.core import wpr_modes
+from telemetry.core.backends import android_app_backend
+from telemetry.core.platform import android_device
+from telemetry.user_story import shared_user_story_state
+from telemetry.web_perf import timeline_based_measurement
+
+
+# TODO(slamm): Interact with TimelineBasedMeasurement when it no longer
+# depends on browser logic.
+class SharedAppState(shared_user_story_state.SharedUserStoryState):
+  """Manage test state/transitions across multiple android.UserStory's.
+
+  WARNING: the class is not ready for public consumption.
+  Email telemetry@chromium.org if you feel like you must use it.
+  """
+
+  def __init__(self, test, finder_options, user_story_set):
+    """This method is styled on unittest.TestCase.setUpClass.
+
+    Args:
+      test: a web_perf.TimelineBasedMeasurement instance.
+      options: a BrowserFinderOptions instance with command line options.
+      user_story_set: an android.UserStorySet instance.
+    """
+    super(SharedAppState, self).__init__(test, finder_options, user_story_set)
+    if not isinstance(
+        test, timeline_based_measurement.TimelineBasedMeasurement):
+        raise ValueError(
+            'SharedAppState only accepts TimelineBasedMeasurement tests'
+            ' (not %s).' % test.__class__)
+    self._finder_options = finder_options
+    self._android_app = None
+    self._current_user_story = None
+    self._platform = platform.GetPlatformForDevice(
+        android_device.GetDevice(finder_options))
+    assert self._platform, 'Unable to create android platform.'
+
+  @property
+  def platform(self):
+    return self._platform
+
+  @property
+  def _platform_backend(self):
+    # TODO(slamm): Remove this interface violation. Do not copy this pattern.
+    return self._platform._platform_backend  # pylint: disable=protected-access
+
+  def WillRunUserStory(self, user_story):
+    assert not self._android_app
+    self._current_user_story = user_story
+
+    self._platform_backend.DismissCrashDialogIfNeeded()
+
+    app_backend = android_app_backend.AndroidAppBackend(
+        self._platform_backend, user_story.start_intent)
+    self._android_app = android_app.AndroidApp(
+        app_backend, self._platform_backend)
+
+  def RunUserStory(self, results):
+    # TODO(chrishenry): Implement this properly.
+    self._current_user_story.Run()
+
+  def DidRunUserStory(self, results):
+    if self._android_app:
+      self._android_app.Close()
+      self._android_app = None
+
+  def GetTestExpectationAndSkipValue(self, expectations):
+    # TODO(chrishenry): Implement this properly.
+    return 'pass', None
+
+  def TearDownState(self, results):
+    pass