content/child/power_monitor_broadcast_source_unittest.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/message_loop/message_loop.h"
   6 #include "base/test/power_monitor_test_base.h"
   7 #include "content/child/power_monitor_broadcast_source.h"
   8 #include "content/common/power_monitor_messages.h"
   9 #include "ipc/message_filter.h"
  10 #include "testing/gtest/include/gtest/gtest.h"
  11
  12 namespace content {
  13
  14 class PowerMonitorBroadcastSourceTest : public testing::Test {
  15  protected:
  16   PowerMonitorBroadcastSourceTest() {
  17     power_monitor_source_ = new PowerMonitorBroadcastSource();
  18     power_monitor_.reset(new base::PowerMonitor(
  19         scoped_ptr<base::PowerMonitorSource>(power_monitor_source_)));
  20   }
  21   virtual ~PowerMonitorBroadcastSourceTest() {}
  22
  23   PowerMonitorBroadcastSource* source() { return power_monitor_source_; }
  24   base::PowerMonitor* monitor() { return power_monitor_.get(); }
  25
  26   base::MessageLoop message_loop_;
  27
  28  private:
  29   PowerMonitorBroadcastSource* power_monitor_source_;
  30   scoped_ptr<base::PowerMonitor> power_monitor_;
  31
  32   DISALLOW_COPY_AND_ASSIGN(PowerMonitorBroadcastSourceTest);
  33 };
  34
  35 TEST_F(PowerMonitorBroadcastSourceTest, PowerMessageReceiveBroadcast) {
  36   IPC::MessageFilter* message_filter = source()->GetMessageFilter();
  37
  38   base::PowerMonitorTestObserver observer;
  39   monitor()->AddObserver(&observer);
  40
  41   PowerMonitorMsg_Suspend suspend_msg;
  42   PowerMonitorMsg_Resume resume_msg;
  43
  44   // Sending resume when not suspended should have no effect.
  45   message_filter->OnMessageReceived(resume_msg);
  46   message_loop_.RunUntilIdle();
  47   EXPECT_EQ(observer.resumes(), 0);
  48
  49   // Pretend we suspended.
  50   message_filter->OnMessageReceived(suspend_msg);
  51   message_loop_.RunUntilIdle();
  52   EXPECT_EQ(observer.suspends(), 1);
  53
  54   // Send a second suspend notification.  This should be suppressed.
  55   message_filter->OnMessageReceived(suspend_msg);
  56   message_loop_.RunUntilIdle();
  57   EXPECT_EQ(observer.suspends(), 1);
  58
  59   // Pretend we were awakened.
  60   message_filter->OnMessageReceived(resume_msg);
  61   message_loop_.RunUntilIdle();
  62   EXPECT_EQ(observer.resumes(), 1);
  63
  64   // Send a duplicate resume notification.  This should be suppressed.
  65   message_filter->OnMessageReceived(resume_msg);
  66   message_loop_.RunUntilIdle();
  67   EXPECT_EQ(observer.resumes(), 1);
  68
  69   PowerMonitorMsg_PowerStateChange on_battery_msg(true);
  70   PowerMonitorMsg_PowerStateChange off_battery_msg(false);
  71
  72   // Pretend the device has gone on battery power
  73   message_filter->OnMessageReceived(on_battery_msg);
  74   message_loop_.RunUntilIdle();
  75   EXPECT_EQ(observer.power_state_changes(), 1);
  76   EXPECT_EQ(observer.last_power_state(), true);
  77
  78   // Repeated indications the device is on battery power should be suppressed.
  79   message_filter->OnMessageReceived(on_battery_msg);
  80   message_loop_.RunUntilIdle();
  81   EXPECT_EQ(observer.power_state_changes(), 1);
  82
  83   // Pretend the device has gone off battery power
  84   message_filter->OnMessageReceived(off_battery_msg);
  85   message_loop_.RunUntilIdle();
  86   EXPECT_EQ(observer.power_state_changes(), 2);
  87   EXPECT_EQ(observer.last_power_state(), false);
  88
  89   // Repeated indications the device is off battery power should be suppressed.
  90   message_filter->OnMessageReceived(off_battery_msg);
  91   message_loop_.RunUntilIdle();
  92   EXPECT_EQ(observer.power_state_changes(), 2);
  93 }
  94
  95 }  // namespace base