base/system_monitor/system_monitor_unittest.cc

   1 // Copyright (c) 2012 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/system_monitor/system_monitor.h"
   6
   7 #include "base/message_loop/message_loop.h"
   8 #include "base/run_loop.h"
   9 #include "base/test/mock_devices_changed_observer.h"
  10 #include "testing/gmock/include/gmock/gmock.h"
  11 #include "testing/gtest/include/gtest/gtest.h"
  12
  13 namespace base {
  14
  15 namespace {
  16
  17 class SystemMonitorTest : public testing::Test {
  18  protected:
  19   SystemMonitorTest() {
  20     system_monitor_.reset(new SystemMonitor);
  21   }
  22
  23   MessageLoop message_loop_;
  24   scoped_ptr<SystemMonitor> system_monitor_;
  25
  26  private:
  27   DISALLOW_COPY_AND_ASSIGN(SystemMonitorTest);
  28 };
  29
  30 TEST_F(SystemMonitorTest, DeviceChangeNotifications) {
  31   const int kObservers = 5;
  32
  33   testing::Sequence mock_sequencer[kObservers];
  34   MockDevicesChangedObserver observers[kObservers];
  35   for (int index = 0; index < kObservers; ++index) {
  36     system_monitor_->AddDevicesChangedObserver(&observers[index]);
  37
  38     EXPECT_CALL(observers[index],
  39                 OnDevicesChanged(SystemMonitor::DEVTYPE_UNKNOWN))
  40         .Times(3)
  41         .InSequence(mock_sequencer[index]);
  42   }
  43
  44   system_monitor_->ProcessDevicesChanged(SystemMonitor::DEVTYPE_UNKNOWN);
  45   RunLoop().RunUntilIdle();
  46
  47   system_monitor_->ProcessDevicesChanged(SystemMonitor::DEVTYPE_UNKNOWN);
  48   system_monitor_->ProcessDevicesChanged(SystemMonitor::DEVTYPE_UNKNOWN);
  49   RunLoop().RunUntilIdle();
  50 }
  51
  52 }  // namespace
  53
  54 }  // namespace base