MediaPerceptionPrivate API impl and testing.

chromeos/dbus/fake_upstart_client.cc

 // 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.
 
 #include "chromeos/dbus/fake_upstart_client.h"
 
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "chromeos/dbus/fake_auth_policy_client.h"
 #include "chromeos/dbus/fake_media_analytics_client.h"
 
 namespace chromeos {
 
-FakeUpstartClient::FakeUpstartClient() {}
+FakeUpstartClient::FakeUpstartClient()
+    : start_media_analytics_will_succeed_(true) {}
 
 FakeUpstartClient::~FakeUpstartClient() {}
 
 void FakeUpstartClient::Init(dbus::Bus* bus) {}
 
 void FakeUpstartClient::StartAuthPolicyService() {
   static_cast<FakeAuthPolicyClient*>(
       DBusThreadManager::Get()->GetAuthPolicyClient())
       ->set_started(true);
 }
 
 void FakeUpstartClient::RestartAuthPolicyService() {
   FakeAuthPolicyClient* authpolicy_client = static_cast<FakeAuthPolicyClient*>(
       DBusThreadManager::Get()->GetAuthPolicyClient());
   DLOG_IF(WARNING, !authpolicy_client->started())
       << "Trying to restart authpolicyd which is not started";
   authpolicy_client->set_started(true);
 }
 
+void FakeUpstartClient::SetStartMediaAnalyticsWillSucceed(bool will_succeed) {
+  start_media_analytics_will_succeed_ = will_succeed;
+}
+
 void FakeUpstartClient::StartMediaAnalytics(const UpstartCallback& callback) {
+  if (!start_media_analytics_will_succeed_) {
+    callback.Run(false);
+    return;
+  }
   FakeMediaAnalyticsClient* media_analytics_client =
       static_cast<FakeMediaAnalyticsClient*>(
           DBusThreadManager::Get()->GetMediaAnalyticsClient());
   DLOG_IF(WARNING, media_analytics_client->process_running())
       << "Trying to start media analytics which is already started.";
   media_analytics_client->set_process_running(true);
   callback.Run(true);
 }
 
 void FakeUpstartClient::StopMediaAnalytics() {
   FakeMediaAnalyticsClient* media_analytics_client =
       static_cast<FakeMediaAnalyticsClient*>(
           DBusThreadManager::Get()->GetMediaAnalyticsClient());
   DLOG_IF(WARNING, !media_analytics_client->process_running())
       << "Trying to stop media analytics which is not started.";
   media_analytics_client->set_process_running(false);
 }
 
 }  // namespace chromeos