[Telemetry] Add Expectation module that enables disabling benchmarks/stories

telemetry/telemetry/testing/fakes/__init__.py

Index: telemetry/telemetry/testing/fakes/__init__.py
diff --git a/telemetry/telemetry/testing/fakes/__init__.py b/telemetry/telemetry/testing/fakes/__init__.py
index 9cfdbdabe514c5d6f0ae186c32fbde635c165280..0503ada9f7517c2ba23a361450c195836938eb1d 100644
--- a/telemetry/telemetry/testing/fakes/__init__.py
+++ b/telemetry/telemetry/testing/fakes/__init__.py
@@ -26,6 +26,8 @@ class FakePlatform(object):
   def __init__(self):
     self._network_controller = None
     self._tracing_controller = None
+    self._has_battor = False
+    self._os_name = 'FakeOS'
 
   @property
   def is_host_platform(self):
@@ -61,8 +63,11 @@ class FakePlatform(object):
   def GetArchName(self):
     raise NotImplementedError
 
+  def SetOSName(self, name):
+    self._os_name = name
+
   def GetOSName(self):
-    return 'FakeOS'
+    return self._os_name
 
   def GetOSVersionName(self):
     raise NotImplementedError
@@ -73,6 +78,13 @@ class FakePlatform(object):
   def WaitForBatteryTemperature(self, _):
     pass
 
+  def HasBattOrConnected(self):
+    return self._has_battor
+
+  def SetBattOrDetected(self, b):
+    assert isinstance(b, bool)
+    self._has_battor = b
+
 
 class FakeLinuxPlatform(FakePlatform):
   def __init__(self):