SystemMonitor refactoring: move power state monitor into a separate class called PowerMonitor

base/power_monitor/power_monitor_unittest.cc

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Copyright 2013 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 "base/system_monitor/system_monitor.h"
+#include "base/power_monitor/power_monitor.h"
 
 #include "base/message_loop.h"
-#include "base/run_loop.h"
-#include "base/test/mock_devices_changed_observer.h"
-#include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace base {
 
-namespace {
-
-class PowerTest : public SystemMonitor::PowerObserver {
+class PowerTest : public PowerObserver {
  public:
   PowerTest()
       : power_state_changes_(0),
         suspends_(0),
         resumes_(0) {
   }
 
   // PowerObserver callbacks.
   virtual void OnPowerStateChange(bool on_battery_power) OVERRIDE {
     power_state_changes_++;
@@ skipping 11 matching lines @@
   int power_state_changes() { return power_state_changes_; }
   int suspends() { return suspends_; }
   int resumes() { return resumes_; }
 
  private:
   int power_state_changes_;  // Count of OnPowerStateChange notifications.
   int suspends_;  // Count of OnSuspend notifications.
   int resumes_;  // Count of OnResume notifications.
 };
 
-class SystemMonitorTest : public testing::Test {
+class PowerMonitorTest : public testing::Test {
  protected:
-  SystemMonitorTest() {
+  PowerMonitorTest() {
 #if defined(OS_MACOSX)
-    // This needs to happen before SystemMonitor's ctor.
-    SystemMonitor::AllocateSystemIOPorts();
+    // This needs to happen before PowerMonitor's ctor.
+    PowerMonitor::AllocateSystemIOPorts();
 #endif
-    system_monitor_.reset(new SystemMonitor);
+    power_monitor_.reset(new PowerMonitor);
   }
-  virtual ~SystemMonitorTest() {}
+
+  void ProcessPowerEvent(PowerMonitor::PowerEvent event_id) {
+    power_monitor_->ProcessPowerEvent(event_id);
+  }
+
+  virtual ~PowerMonitorTest() {}
 
   MessageLoop message_loop_;
-  scoped_ptr<SystemMonitor> system_monitor_;
+  scoped_ptr<PowerMonitor> power_monitor_;
 
-  DISALLOW_COPY_AND_ASSIGN(SystemMonitorTest);
+  DISALLOW_COPY_AND_ASSIGN(PowerMonitorTest);
 };
 
-TEST_F(SystemMonitorTest, PowerNotifications) {
+TEST_F(PowerMonitorTest, PowerNotifications) {
   const int kObservers = 5;
 
   PowerTest test[kObservers];
   for (int index = 0; index < kObservers; ++index)
-    system_monitor_->AddPowerObserver(&test[index]);
+    power_monitor_->AddObserver(&test[index]);
 
   // Send a bunch of power changes.  Since the battery power hasn't
   // actually changed, we shouldn't get notifications.
   for (int index = 0; index < 5; index++) {
-    system_monitor_->ProcessPowerMessage(SystemMonitor::POWER_STATE_EVENT);
+    ProcessPowerEvent(PowerMonitor::POWER_STATE_EVENT);
     EXPECT_EQ(test[0].power_state_changes(), 0);
   }
 
   // Sending resume when not suspended should have no effect.
-  system_monitor_->ProcessPowerMessage(SystemMonitor::RESUME_EVENT);
-  RunLoop().RunUntilIdle();
+  ProcessPowerEvent(PowerMonitor::RESUME_EVENT);
+  message_loop_.RunUntilIdle();
   EXPECT_EQ(test[0].resumes(), 0);
 
   // Pretend we suspended.
-  system_monitor_->ProcessPowerMessage(SystemMonitor::SUSPEND_EVENT);
-  RunLoop().RunUntilIdle();
+  ProcessPowerEvent(PowerMonitor::SUSPEND_EVENT);
+  message_loop_.RunUntilIdle();
   EXPECT_EQ(test[0].suspends(), 1);
 
   // Send a second suspend notification.  This should be suppressed.
-  system_monitor_->ProcessPowerMessage(SystemMonitor::SUSPEND_EVENT);
-  RunLoop().RunUntilIdle();
+  ProcessPowerEvent(PowerMonitor::SUSPEND_EVENT);
+  message_loop_.RunUntilIdle();
   EXPECT_EQ(test[0].suspends(), 1);
 
   // Pretend we were awakened.
-  system_monitor_->ProcessPowerMessage(SystemMonitor::RESUME_EVENT);
-  RunLoop().RunUntilIdle();
+  ProcessPowerEvent(PowerMonitor::RESUME_EVENT);
+  message_loop_.RunUntilIdle();
   EXPECT_EQ(test[0].resumes(), 1);
 
   // Send a duplicate resume notification.  This should be suppressed.
-  system_monitor_->ProcessPowerMessage(SystemMonitor::RESUME_EVENT);
-  RunLoop().RunUntilIdle();
+  ProcessPowerEvent(PowerMonitor::RESUME_EVENT);
+  message_loop_.RunUntilIdle();
   EXPECT_EQ(test[0].resumes(), 1);
 }
 
-TEST_F(SystemMonitorTest, DeviceChangeNotifications) {
-  const int kObservers = 5;
-
-  testing::Sequence mock_sequencer[kObservers];
-  MockDevicesChangedObserver observers[kObservers];
-  for (int index = 0; index < kObservers; ++index) {
-    system_monitor_->AddDevicesChangedObserver(&observers[index]);
-
-    EXPECT_CALL(observers[index],
-                OnDevicesChanged(SystemMonitor::DEVTYPE_UNKNOWN))
-        .Times(3)
-        .InSequence(mock_sequencer[index]);
-  }
-
-  system_monitor_->ProcessDevicesChanged(SystemMonitor::DEVTYPE_UNKNOWN);
-  RunLoop().RunUntilIdle();
-
-  system_monitor_->ProcessDevicesChanged(SystemMonitor::DEVTYPE_UNKNOWN);
-  system_monitor_->ProcessDevicesChanged(SystemMonitor::DEVTYPE_UNKNOWN);
-  RunLoop().RunUntilIdle();
-}
-
-}  // namespace
-
 }  // namespace base