[LINUX] Extract the name and id of the device and send it along the device attach message.

chrome/browser/media_gallery/media_device_notifications_linux_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.
 
 // MediaDeviceNotificationsLinux unit tests.
 
 #include "chrome/browser/media_gallery/media_device_notifications_linux.h"
 
 #include <mntent.h>
 #include <stdio.h>
@@ skipping 19 matching lines @@
 
 const char kValidFS[] = "vfat";
 const char kInvalidFS[] = "invalidfs";
 
 const char kInvalidPath[] = "invalid path does not exist";
 
 const char kDevice1[] = "d1";
 const char kDevice2[] = "d2";
 const char kDevice3[] = "d3";
 
+const char kDeviceId1[] = "FFF0-000F";
+const char kDeviceId2[] = "FFF0-00F0";
+const char kDeviceId3[] = "FFF0-0F00";
+
+const char kDeviceLabel1[] = "TEST_USB_MODEL_1";
+const char kDeviceLabel2[] = "TEST_USB_MODEL_2";
+const char kDeviceLabel3[] = "TEST_USB_MODEL_3";
+
 const char kMountPointA[] = "mnt_a";
 const char kMountPointB[] = "mnt_b";
 
 class MediaDeviceNotificationsLinuxTestWrapper
     : public MediaDeviceNotificationsLinux {
  public:
   MediaDeviceNotificationsLinuxTestWrapper(const FilePath& path,
                                            MessageLoop* message_loop)
       : MediaDeviceNotificationsLinux(path),
         message_loop_(message_loop) {
+    PopulateMountDeviceInfoMap();
   }
 
  private:
+  // Device unique id and label information.
+  typedef std::pair<std::string, string16> DeviceInfo;
+
+  // (Mount device, DeviceInfo)
+  typedef std::map<std::string, DeviceInfo> MountDeviceInfoMap;
+
   // Avoids code deleting the object while there are references to it.
   // Aside from the base::RefCountedThreadSafe friend class, any attempts to
   // call this dtor will result in a compile-time error.
   ~MediaDeviceNotificationsLinuxTestWrapper() {}
 
   virtual void OnFilePathChanged(const FilePath& path, bool error) OVERRIDE {
     MediaDeviceNotificationsLinux::OnFilePathChanged(path, error);
     message_loop_->PostTask(FROM_HERE, MessageLoop::QuitClosure());
   }
 
+  virtual bool GetDeviceInfo(const std::string& dev_path,
+                             std::string* id,
+                             string16* name) OVERRIDE {
+    MountDeviceInfoMap::const_iterator it = device_info_map_.find(dev_path);
+    if (it == device_info_map_.end())
+      return false;
+
+    id->assign(it->second.first);
+    *name = it->second.second;
+    return true;
+  }
+
+  // Helper function to populate test device information.
+  void PopulateMountDeviceInfoMap() {
+    device_info_map_.insert(
+        std::make_pair(kDevice1,
+                       std::make_pair(kDeviceId1,
+                                      UTF8ToUTF16(kDeviceLabel1))));
+    device_info_map_.insert(
+        std::make_pair(kDevice2,
+                       std::make_pair(kDeviceId2,
+                                      UTF8ToUTF16(kDeviceLabel2))));
+    device_info_map_.insert(
+        std::make_pair(kDevice3,
+                       std::make_pair(kDeviceId3,
+                                      UTF8ToUTF16(kDeviceLabel3))));
+  }
+
   MessageLoop* message_loop_;
+  MountDeviceInfoMap device_info_map_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaDeviceNotificationsLinuxTestWrapper);
 };
 
 class MediaDeviceNotificationsLinuxTest : public testing::Test {
  public:
   struct MtabTestData {
     MtabTestData(const std::string& mount_device,
                  const std::string& mount_point,
                  const std::string& mount_type)
@@ skipping 155 matching lines @@
 
 // Simple test case where we attach and detach a media device.
 TEST_F(MediaDeviceNotificationsLinuxTest, BasicAttachDetach) {
   testing::Sequence mock_sequence;
   FilePath test_path = CreateMountPointWithDCIMDir(kMountPointA);
   ASSERT_FALSE(test_path.empty());
   MtabTestData test_data[] = {
     MtabTestData(kDevice1, kInvalidPath, kValidFS),
     MtabTestData(kDevice2, test_path.value(), kValidFS),
   };
-  const std::string kDeviceId = "0";
   // Only |kDevice2| should be attached, since |kDevice1| has a bad path.
   EXPECT_CALL(observer(),
-              OnMediaDeviceAttached(kDeviceId,
-                                    ASCIIToUTF16(kDevice2),
+              OnMediaDeviceAttached(kDeviceId2,
+                                    UTF8ToUTF16(kDeviceLabel2),

[Lei Zhang, 2012/08/09 03:47:16]

What I mean is, you can still use ASCIIToUTF16().

[kmadhusu, 2012/08/09 08:10:03]

Done.

                                     base::SystemMonitor::TYPE_PATH,
                                     test_path.value()))
       .InSequence(mock_sequence);
   AppendToMtabAndRunLoop(test_data, arraysize(test_data));
 
   // |kDevice2| should be detached here.
-  EXPECT_CALL(observer(), OnMediaDeviceDetached(kDeviceId))
+  EXPECT_CALL(observer(), OnMediaDeviceDetached(kDeviceId2))
       .InSequence(mock_sequence);
   WriteEmptyMtabAndRunLoop();
 }
 
 // Only mount points with DCIM directories are recognized.
 TEST_F(MediaDeviceNotificationsLinuxTest, DCIM) {
   testing::Sequence mock_sequence;
   FilePath test_path_a = CreateMountPointWithDCIMDir(kMountPointA);
   ASSERT_FALSE(test_path_a.empty());
   MtabTestData test_data1[] = {
     MtabTestData(kDevice1, test_path_a.value(), kValidFS),
   };
-  const std::string kDeviceId = "0";
   // |kDevice1| should be attached as expected.
   EXPECT_CALL(observer(),
-              OnMediaDeviceAttached(kDeviceId,
-                                    ASCIIToUTF16(kDevice1),
+              OnMediaDeviceAttached(kDeviceId1,
+                                    UTF8ToUTF16(kDeviceLabel1),
                                     base::SystemMonitor::TYPE_PATH,
                                     test_path_a.value()))
       .InSequence(mock_sequence);
   AppendToMtabAndRunLoop(test_data1, arraysize(test_data1));
 
   // This should do nothing, since |kMountPointB| does not have a DCIM dir.
   FilePath test_path_b = CreateMountPointWithoutDCIMDir(kMountPointB);
   ASSERT_FALSE(test_path_b.empty());
   MtabTestData test_data2[] = {
     MtabTestData(kDevice2, test_path_b.value(), kValidFS),
   };
   AppendToMtabAndRunLoop(test_data2, arraysize(test_data2));
 
   // |kDevice1| should be detached as expected.
-  EXPECT_CALL(observer(), OnMediaDeviceDetached(kDeviceId))
+  EXPECT_CALL(observer(), OnMediaDeviceDetached(kDeviceId1))
       .InSequence(mock_sequence);
   WriteEmptyMtabAndRunLoop();
 }
 
 // More complicated test case with multiple devices on multiple mount points.
+TEST_F(MediaDeviceNotificationsLinuxTest, SwapMountPoints) {
+  FilePath test_path_a = CreateMountPointWithDCIMDir(kMountPointA);
+  FilePath test_path_b = CreateMountPointWithDCIMDir(kMountPointB);
+  ASSERT_FALSE(test_path_a.empty());
+  ASSERT_FALSE(test_path_b.empty());
+
+  // Attach two devices.
+  // kDevice1 -> kMountPointA
+  // kDevice2 -> kMountPointB
+  MtabTestData test_data1[] = {
+    MtabTestData(kDevice1, test_path_a.value(), kValidFS),
+    MtabTestData(kDevice2, test_path_b.value(), kValidFS),
+  };
+  EXPECT_CALL(observer(), OnMediaDeviceAttached(_, _, _, _)).Times(2);
+  EXPECT_CALL(observer(), OnMediaDeviceDetached(_)).Times(0);
+  AppendToMtabAndRunLoop(test_data1, arraysize(test_data1));
+
+  // Detach two devices from old mount points and attach the devices at new
+  // mount points.
+  // kDevice1 -> kMountPointB
+  // kDevice2 -> kMountPointA
+  MtabTestData test_data2[] = {
+    MtabTestData(kDevice1, test_path_b.value(), kValidFS),
+    MtabTestData(kDevice2, test_path_a.value(), kValidFS),
+  };
+  EXPECT_CALL(observer(), OnMediaDeviceAttached(_, _, _, _)).Times(2);
+  EXPECT_CALL(observer(), OnMediaDeviceDetached(_)).Times(2);
+  OverwriteMtabAndRunLoop(test_data2, arraysize(test_data2));
+
+  // Detach all devices.
+  EXPECT_CALL(observer(), OnMediaDeviceAttached(_, _, _, _)).Times(0);
+  EXPECT_CALL(observer(), OnMediaDeviceDetached(_)).Times(2);
+  WriteEmptyMtabAndRunLoop();
+}
+
+// More complicated test case with multiple devices on multiple mount points.
 TEST_F(MediaDeviceNotificationsLinuxTest, MultiDevicesMultiMountPoints) {
   FilePath test_path_a = CreateMountPointWithDCIMDir(kMountPointA);
   FilePath test_path_b = CreateMountPointWithDCIMDir(kMountPointB);
   ASSERT_FALSE(test_path_a.empty());
   ASSERT_FALSE(test_path_b.empty());
 
   // Attach two devices.
   // kDevice1 -> kMountPointA
   // kDevice2 -> kMountPointB
   MtabTestData test_data1[] = {
@@ skipping 54 matching lines @@
   EXPECT_CALL(observer(), OnMediaDeviceDetached(_)).Times(2);
   WriteEmptyMtabAndRunLoop();
 }
 
 // More complicated test case with multiple devices on one mount point.
 TEST_F(MediaDeviceNotificationsLinuxTest, MultiDevicesOneMountPoint) {
   FilePath test_path_a = CreateMountPointWithDCIMDir(kMountPointA);
   FilePath test_path_b = CreateMountPointWithDCIMDir(kMountPointB);
   ASSERT_FALSE(test_path_a.empty());
   ASSERT_FALSE(test_path_b.empty());
-  const std::string kDeviceId0 = "0";
-  const std::string kDeviceId1 = "1";
 
   // |kDevice1| is most recently mounted at |kMountPointB|.
   // kDevice1 -> kMountPointA
   // kDevice2 -> kMountPointB
   // kDevice1 -> kMountPointB
   MtabTestData test_data1[] = {
     MtabTestData(kDevice1, test_path_a.value(), kValidFS),
     MtabTestData(kDevice2, test_path_b.value(), kValidFS),
     MtabTestData(kDevice1, test_path_b.value(), kValidFS),
   };
   EXPECT_CALL(observer(),
-              OnMediaDeviceAttached(kDeviceId0,
-                                    ASCIIToUTF16(kDevice1),
+              OnMediaDeviceAttached(kDeviceId1,
+                                    UTF8ToUTF16(kDeviceLabel1),
                                     base::SystemMonitor::TYPE_PATH,
                                     test_path_b.value()))
       .Times(1);
   EXPECT_CALL(observer(), OnMediaDeviceDetached(_)).Times(0);
   OverwriteMtabAndRunLoop(test_data1, arraysize(test_data1));
 
   // Attach |kDevice3| to |kMountPointB|.
   // |kDevice1| is inaccessible at its most recent mount point, so it is
   // detached and unavailable, even though it is still accessible via
   // |kMountPointA|.
   // kDevice1 -> kMountPointA
   // kDevice2 -> kMountPointB
   // kDevice1 -> kMountPointB
   // kDevice3 -> kMountPointB
   MtabTestData test_data2[] = {
     MtabTestData(kDevice3, test_path_b.value(), kValidFS),
   };
-  EXPECT_CALL(observer(), OnMediaDeviceDetached(kDeviceId0)).Times(1);
+  EXPECT_CALL(observer(), OnMediaDeviceDetached(kDeviceId1)).Times(1);
   EXPECT_CALL(observer(),
-              OnMediaDeviceAttached(kDeviceId1,
-                                    ASCIIToUTF16(kDevice3),
+              OnMediaDeviceAttached(kDeviceId3,
+                                    UTF8ToUTF16(kDeviceLabel3),
                                     base::SystemMonitor::TYPE_PATH,
                                     test_path_b.value()))
       .Times(1);
   AppendToMtabAndRunLoop(test_data2, arraysize(test_data2));
 
   // Detach all devices.
   EXPECT_CALL(observer(), OnMediaDeviceAttached(_, _, _, _)).Times(0);
-  EXPECT_CALL(observer(), OnMediaDeviceDetached(kDeviceId1)).Times(1);
+  EXPECT_CALL(observer(), OnMediaDeviceDetached(kDeviceId3)).Times(1);
   WriteEmptyMtabAndRunLoop();
 }
 
 }  // namespace
 
 }  // namespace chrome