Add SystemMonitor::GetMediaDevices()

chrome/browser/media_gallery/media_device_manager_unittest.cc

+// Copyright (c) 2012 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/file_path.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/message_loop.h"
+#include "base/system_monitor/system_monitor.h"
+#include "chrome/browser/media_gallery/media_device_manager.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace chrome {
+
+namespace {
+
+using base::SystemMonitor;
+
+class MediaDeviceManagerTest : public testing::Test {
+ public:
+  MediaDeviceManagerTest() {}
+  virtual ~MediaDeviceManagerTest() {}
+
+  virtual void SetUp() OVERRIDE {
+#if defined(OS_MACOSX)
+    SystemMonitor::AllocateSystemIOPorts();
+#endif
+
+    system_monitor_.reset(new SystemMonitor());
+    device_manager_.reset(new MediaDeviceManager());
+  }
+
+ protected:
+  MessageLoop message_loop_;
+  scoped_ptr<SystemMonitor> system_monitor_;
+  scoped_ptr<MediaDeviceManager> device_manager_;
+};
+
+TEST_F(MediaDeviceManagerTest, Empty) {
+  std::vector<MediaDeviceManager::MediaDeviceInfo> devices;
+  device_manager_->GetDevices(&devices);
+  EXPECT_EQ(0U, devices.size());
+}
+
+TEST_F(MediaDeviceManagerTest, AttachDetach) {
+  const SystemMonitor::DeviceIdType kDeviceId1 = 42;
+  const char kDeviceName1[] = "test";
+  const FilePath kDevicePath1(FILE_PATH_LITERAL("/testfoo"));
+  system_monitor_->ProcessMediaDeviceAttached(kDeviceId1,
+                                              kDeviceName1,
+                                              kDevicePath1);
+  message_loop_.RunAllPending();
+  std::vector<MediaDeviceManager::MediaDeviceInfo> devices;
+  device_manager_->GetDevices(&devices);
+  ASSERT_EQ(1U, devices.size());
+  EXPECT_EQ(kDeviceName1, devices[0].first);
+  EXPECT_EQ(kDevicePath1, devices[0].second);
+
+  const SystemMonitor::DeviceIdType kDeviceId2 = 44;
+  const char kDeviceName2[] = "test2";
+  const FilePath kDevicePath2(FILE_PATH_LITERAL("/testbar"));
+  system_monitor_->ProcessMediaDeviceAttached(kDeviceId2,
+                                              kDeviceName2,
+                                              kDevicePath2);
+  message_loop_.RunAllPending();
+  devices.clear();
+  device_manager_->GetDevices(&devices);
+  ASSERT_EQ(2U, devices.size());
+  EXPECT_EQ(kDeviceName1, devices[0].first);
+  EXPECT_EQ(kDevicePath1, devices[0].second);
+  EXPECT_EQ(kDeviceName2, devices[1].first);
+  EXPECT_EQ(kDevicePath2, devices[1].second);
+
+  system_monitor_->ProcessMediaDeviceDetached(kDeviceId1);
+  message_loop_.RunAllPending();
+  devices.clear();
+  device_manager_->GetDevices(&devices);
+  ASSERT_EQ(1U, devices.size());
+  EXPECT_EQ(kDeviceName2, devices[1].first);
+  EXPECT_EQ(kDevicePath2, devices[1].second);
+
+  system_monitor_->ProcessMediaDeviceDetached(kDeviceId2);
+  message_loop_.RunAllPending();
+  devices.clear();
+  device_manager_->GetDevices(&devices);
+  EXPECT_EQ(0U, devices.size());
+}
+
+}  // namespace
+
+}  // namespace chrome