Changed api to notify when watched directory is deleted.

chrome/browser/chromeos/extensions/file_manager/file_manager_private_apitest.cc

Index: chrome/browser/chromeos/extensions/file_manager/file_manager_private_apitest.cc
diff --git a/chrome/browser/chromeos/extensions/file_manager/file_manager_private_apitest.cc b/chrome/browser/chromeos/extensions/file_manager/file_manager_private_apitest.cc
index 7644101eb3c72bf575a6503586bd681bc4e6ee5b..ba835de4ad602fc20373e71c35003b096d4f730a 100644
--- a/chrome/browser/chromeos/extensions/file_manager/file_manager_private_apitest.cc
+++ b/chrome/browser/chromeos/extensions/file_manager/file_manager_private_apitest.cc
@@ -3,8 +3,12 @@
 // found in the LICENSE file.
 
 #include "base/stl_util.h"
+#include "chrome/browser/chromeos/drive/file_change.h"
+#include "chrome/browser/chromeos/extensions/file_manager/event_router.h"
 #include "chrome/browser/chromeos/file_manager/drive_test_util.h"
+#include "chrome/browser/chromeos/file_manager/file_watcher.h"
 #include "chrome/browser/extensions/extension_apitest.h"
+#include "chrome/test/base/testing_profile.h"
 #include "chromeos/dbus/cros_disks_client.h"
 #include "chromeos/disks/mock_disk_mount_manager.h"
 #include "extensions/common/extension.h"
@@ -108,6 +112,25 @@ TestDiskInfo kTestDisks[] = {
   }
 };
 
+void DispatchDirectoryChangeEventImpl(
+    int* counter, const base::FilePath& virtual_path,
+    const drive::FileChange* list, bool got_error,
+    const std::vector<std::string>& extension_ids) {
+  ++(*counter);
+}
+
+drive::FileChange* CreateDirectoryDeletionFileChange(

[mtomasz, 2014/10/20 08:05:23]

Is the pointer ownership properly managed, and the pointer removed? If not, then
we can simply return FileChange. Or, we can use scoped pointers.

[yawano, 2014/10/20 08:45:15]

Done. Changed to use scoped_ptr.

+    const base::FilePath& directory_path) {
+  drive::FileChange* file_change = new drive::FileChange;

[mtomasz, 2014/10/20 08:05:22]

nit: This can be "drive::FileChange* const file_change"

[yawano, 2014/10/20 08:45:15]

Acknowledged.

+  file_change->Update(directory_path,
+                      drive::FileChange::FileType::FILE_TYPE_DIRECTORY,
+                      drive::FileChange::ChangeType::DELETE);
+
+  return file_change;
+}
+
+void AddFileWatchCallback(bool success) {}
+
 }  // namespace
 
 class FileManagerPrivateApiTest : public ExtensionApiTest {
@@ -119,13 +142,30 @@ class FileManagerPrivateApiTest : public ExtensionApiTest {
 
   virtual ~FileManagerPrivateApiTest() {
     DCHECK(!disk_mount_manager_mock_);
+    DCHECK(!testing_profile_);
+    DCHECK(!event_router_);
     STLDeleteValues(&volumes_);
   }
 
+  virtual void SetUpOnMainThread() override {
+    ExtensionApiTest::SetUpOnMainThread();
+
+    testing_profile_.reset(new TestingProfile());
+    event_router_.reset(new file_manager::EventRouter(testing_profile_.get()));
+  }
+
+  virtual void TearDownOnMainThread() override {
+    event_router_->Shutdown();
+
+    event_router_.reset();
+    testing_profile_.reset();
+
+    ExtensionApiTest::TearDownOnMainThread();
+  }
+
   // ExtensionApiTest override
   virtual void SetUpInProcessBrowserTestFixture() override {
     ExtensionApiTest::SetUpInProcessBrowserTestFixture();
-
     disk_mount_manager_mock_ = new chromeos::disks::MockDiskMountManager;
     chromeos::disks::DiskMountManager::InitializeForTesting(
         disk_mount_manager_mock_);
@@ -241,6 +281,8 @@ class FileManagerPrivateApiTest : public ExtensionApiTest {
   chromeos::disks::MockDiskMountManager* disk_mount_manager_mock_;
   DiskMountManager::DiskMap volumes_;
   DiskMountManager::MountPointMap mount_points_;
+  scoped_ptr<TestingProfile> testing_profile_;
+  scoped_ptr<file_manager::EventRouter> event_router_;
 };
 
 IN_PROC_BROWSER_TEST_F(FileManagerPrivateApiTest, Mount) {
@@ -270,3 +312,41 @@ IN_PROC_BROWSER_TEST_F(FileManagerPrivateApiTest, Permissions) {
   const extensions::InstallWarning& warning = extension->install_warnings()[0];
   EXPECT_EQ("fileManagerPrivate", warning.key);
 }
+
+IN_PROC_BROWSER_TEST_F(FileManagerPrivateApiTest, OnFileChanged) {
+  // In drive volume, deletion of a directory is notified via OnFileChanged.
+  // Local changes directly come to HandleFileWatchNotification from
+  // FileWatcher.
+  int counter = 0;
+  event_router_->SetDispatchDirectoryChangeEventImplForTesting(
+      base::Bind(&DispatchDirectoryChangeEventImpl, &counter));
+
+  // /a/b/c and /a/d/e are being watched.
+  event_router_->AddFileWatch(
+      base::FilePath(FILE_PATH_LITERAL("/no-existing-fs/root/a/b/c")),
+      base::FilePath(FILE_PATH_LITERAL("/no-existing-fs-virtual/root/a/b/c")),
+      "extension_1", base::Bind(&AddFileWatchCallback));
+
+  event_router_->AddFileWatch(
+      base::FilePath(FILE_PATH_LITERAL("/no-existing-fs/root/a/d/e")),
+      base::FilePath(FILE_PATH_LITERAL("/no-existing-fs-hash/root/a/d/e")),
+      "extension_2", base::Bind(&AddFileWatchCallback));
+
+  // When /a is deleted (1 and 2 is notified).
+  event_router_->OnFileChanged(
+      *CreateDirectoryDeletionFileChange(
+          base::FilePath(FILE_PATH_LITERAL("/no-existing-fs/root/a"))));
+  EXPECT_EQ(2, counter);
+
+  // When /a/b/c is deleted (1 is notified).
+  event_router_->OnFileChanged(
+      *CreateDirectoryDeletionFileChange(
+          base::FilePath(FILE_PATH_LITERAL("/no-existing-fs/root/a/b/c"))));
+  EXPECT_EQ(3, counter);
+
+  // When /z/y is deleted (Not notified).
+  event_router_->OnFileChanged(
+      *CreateDirectoryDeletionFileChange(
+          base::FilePath(FILE_PATH_LITERAL("/no-existing-fs/root/z/y"))));
+  EXPECT_EQ(3, counter);
+}