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// Copyright 2013 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 "chrome/browser/chromeos/file_manager/file_watcher.h"
#include "base/files/file_util.h"
#include "base/files/scoped_temp_dir.h"
#include "base/message_loop/message_loop.h"
#include "base/run_loop.h"
#include "content/public/test/test_browser_thread_bundle.h"
#include "google_apis/drive/test_util.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace file_manager {
namespace {
using google_apis::test_util::CreateQuitCallback;
using google_apis::test_util::CreateCopyResultCallback;
class FileManagerFileWatcherTest : public testing::Test {
public:
// Use IO_MAINLOOP so FilePathWatcher works in the fake FILE thread, which
// is actually shared with the main thread.
FileManagerFileWatcherTest()
: thread_bundle_(content::TestBrowserThreadBundle::IO_MAINLOOP) {
}
private:
content::TestBrowserThreadBundle thread_bundle_;
};
TEST_F(FileManagerFileWatcherTest, AddAndRemoveOneExtensionId) {
const base::FilePath kVirtualPath =
base::FilePath::FromUTF8Unsafe("foo/bar.txt");
const char kExtensionId[] = "extension-id";
FileWatcher file_watcher(kVirtualPath);
file_watcher.AddExtension(kExtensionId);
std::vector<std::string> extension_ids = file_watcher.GetExtensionIds();
ASSERT_EQ(1U, extension_ids.size());
ASSERT_EQ(kExtensionId, extension_ids[0]);
file_watcher.RemoveExtension(kExtensionId);
extension_ids = file_watcher.GetExtensionIds();
ASSERT_EQ(0U, extension_ids.size());
}
TEST_F(FileManagerFileWatcherTest, AddAndRemoveMultipleExtensionIds) {
const base::FilePath kVirtualPath =
base::FilePath::FromUTF8Unsafe("foo/bar.txt");
const char kExtensionFooId[] = "extension-foo-id";
const char kExtensionBarId[] = "extension-bar-id";
FileWatcher file_watcher(kVirtualPath);
file_watcher.AddExtension(kExtensionFooId);
file_watcher.AddExtension(kExtensionBarId);
std::vector<std::string> extension_ids = file_watcher.GetExtensionIds();
// The list should be sorted.
ASSERT_EQ(2U, extension_ids.size());
ASSERT_EQ(kExtensionBarId, extension_ids[0]);
ASSERT_EQ(kExtensionFooId, extension_ids[1]);
// Remove Foo. Bar should remain.
file_watcher.RemoveExtension(kExtensionFooId);
extension_ids = file_watcher.GetExtensionIds();
ASSERT_EQ(1U, extension_ids.size());
ASSERT_EQ(kExtensionBarId, extension_ids[0]);
// Remove Bar. Nothing should remain.
file_watcher.RemoveExtension(kExtensionBarId);
extension_ids = file_watcher.GetExtensionIds();
ASSERT_EQ(0U, extension_ids.size());
}
TEST_F(FileManagerFileWatcherTest, AddSameExtensionMultipleTimes) {
const base::FilePath kVirtualPath =
base::FilePath::FromUTF8Unsafe("foo/bar.txt");
const char kExtensionId[] = "extension-id";
FileWatcher file_watcher(kVirtualPath);
// Add three times.
file_watcher.AddExtension(kExtensionId);
file_watcher.AddExtension(kExtensionId);
file_watcher.AddExtension(kExtensionId);
std::vector<std::string> extension_ids = file_watcher.GetExtensionIds();
ASSERT_EQ(1U, extension_ids.size());
ASSERT_EQ(kExtensionId, extension_ids[0]);
// Remove 1st time.
file_watcher.RemoveExtension(kExtensionId);
extension_ids = file_watcher.GetExtensionIds();
ASSERT_EQ(1U, extension_ids.size());
// Remove 2nd time.
file_watcher.RemoveExtension(kExtensionId);
extension_ids = file_watcher.GetExtensionIds();
ASSERT_EQ(1U, extension_ids.size());
// Remove 3rd time. The extension ID should be gone now.
file_watcher.RemoveExtension(kExtensionId);
extension_ids = file_watcher.GetExtensionIds();
ASSERT_EQ(0U, extension_ids.size());
}
TEST_F(FileManagerFileWatcherTest, WatchLocalFile) {
const base::FilePath kVirtualPath =
base::FilePath::FromUTF8Unsafe("foo/bar.txt");
const char kExtensionId[] = "extension-id";
// Create a temporary directory.
base::ScopedTempDir temp_dir;
ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
// See the comment at the end of this function for why scoped_ptr is used.
scoped_ptr<FileWatcher> file_watcher(
new FileWatcher(kVirtualPath));
file_watcher->AddExtension(kExtensionId);
// Start watching changes in the temporary directory.
base::FilePath changed_path;
bool watcher_created = false;
bool on_change_error = false;
base::RunLoop run_loop;
file_watcher->WatchLocalFile(
temp_dir.path(),
CreateQuitCallback(
&run_loop,
CreateCopyResultCallback(&changed_path, &on_change_error)),
CreateCopyResultCallback(&watcher_created));
// Spin the message loop so the base::FilePathWatcher is created.
base::RunLoop().RunUntilIdle();
ASSERT_TRUE(watcher_created);
// Create a temporary file in the temporary directory. The file watcher
// should detect the change in the directory.
base::FilePath temp_file_path;
ASSERT_TRUE(base::CreateTemporaryFileInDir(temp_dir.path(), &temp_file_path));
// Wait until the directory change is notified.
run_loop.Run();
ASSERT_FALSE(on_change_error);
ASSERT_EQ(temp_dir.path().value(), changed_path.value());
// This is ugly, but FileWatcher should be deleted explicitly here, and
// spin the message loop so the base::FilePathWatcher is deleted.
// Otherwise, base::FilePathWatcher may detect a change when the temporary
// directory is deleted, which may result in crash.
file_watcher.reset();
base::RunLoop().RunUntilIdle();
}
} // namespace
} // namespace file_manager.
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