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base / system / system_monitor_unittest.cc [blame]
// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/system/system_monitor.h"
#include <array>
#include <memory>
#include "base/run_loop.h"
#include "base/test/mock_devices_changed_observer.h"
#include "base/test/task_environment.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
namespace {
class SystemMonitorTest : public testing::Test {
public:
SystemMonitorTest(const SystemMonitorTest&) = delete;
SystemMonitorTest& operator=(const SystemMonitorTest&) = delete;
protected:
SystemMonitorTest() { system_monitor_ = std::make_unique<SystemMonitor>(); }
test::TaskEnvironment task_environment_;
std::unique_ptr<SystemMonitor> system_monitor_;
};
TEST_F(SystemMonitorTest, DeviceChangeNotifications) {
const int kObservers = 5;
std::array<testing::Sequence, kObservers> mock_sequencer;
std::array<MockDevicesChangedObserver, kObservers> observers;
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