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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <set>
#include "base/files/file_util.h"
#include "base/files/scoped_temp_dir.h"
#include "base/functional/bind.h"
#include "base/run_loop.h"
#include "base/task/sequenced_task_runner.h"
#include "base/test/task_environment.h"
#include "base/test/test_timeouts.h"
#include "chrome/browser/devtools/devtools_file_watcher.h"
#include "testing/gtest/include/gtest/gtest.h"
class DevToolsFileWatcherTest : public testing::Test {
public:
void Callback(const std::vector<std::string>& changed_paths,
const std::vector<std::string>& added_paths,
const std::vector<std::string>& removed_paths) {
for (auto& p : changed_paths)
expected_changed_paths_.erase(p);
for (auto& p : added_paths)
ASSERT_EQ(1ul, expected_added_paths_.erase(p));
for (auto& p : removed_paths)
ASSERT_EQ(1ul, expected_removed_paths_.erase(p));
}
void SetUp() override {
ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
base_path_ = temp_dir_.GetPath();
}
base::ScopedTempDir temp_dir_;
base::FilePath base_path_;
base::test::TaskEnvironment task_environment_;
bool done_flag_ = false;
std::set<std::string> expected_changed_paths_;
std::set<std::string> expected_added_paths_;
std::set<std::string> expected_removed_paths_;
};
TEST_F(DevToolsFileWatcherTest, BasicUsage) {
std::unique_ptr<DevToolsFileWatcher, DevToolsFileWatcher::Deleter> watcher(
new DevToolsFileWatcher(
base::BindRepeating(&DevToolsFileWatcherTest::Callback,
base::Unretained(this)),
base::SequencedTaskRunner::GetCurrentDefault()));
base::FilePath changed_path = base_path_.Append(FILE_PATH_LITERAL("file1"));
base::WriteFile(changed_path, "test");
watcher->AddWatch(base_path_);
expected_changed_paths_.insert(changed_path.AsUTF8Unsafe());
while (!expected_changed_paths_.empty()) {
task_environment_.RunUntilIdle();
base::PlatformThread::Sleep(TestTimeouts::tiny_timeout());
// Just for the first operation, repeat it until we get the callback, as
// watcher may take some time to start on another thread.
base::WriteFile(changed_path, "test");
}
base::FilePath added_path = base_path_.Append(FILE_PATH_LITERAL("file2"));
expected_added_paths_.insert(added_path.AsUTF8Unsafe());
base::WriteFile(added_path, "test");
while (!expected_added_paths_.empty()) {
task_environment_.RunUntilIdle();
base::PlatformThread::Sleep(TestTimeouts::tiny_timeout());
}
expected_removed_paths_.insert(added_path.AsUTF8Unsafe());
base::DeleteFile(added_path);
while (!expected_removed_paths_.empty()) {
task_environment_.RunUntilIdle();
base::PlatformThread::Sleep(TestTimeouts::tiny_timeout());
}
}
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