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// Copyright (c) 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 "remoting/host/config_file_watcher.h"
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/macros.h"
#include "base/message_loop/message_loop.h"
#include "base/run_loop.h"
#include "remoting/base/auto_thread.h"
#include "remoting/base/auto_thread_task_runner.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gmock_mutant.h"
#include "testing/gtest/include/gtest/gtest.h"
using testing::_;
using testing::AnyNumber;
using testing::Return;
namespace remoting {
namespace {
class ConfigFileWatcherDelegate : public ConfigFileWatcher::Delegate {
public:
ConfigFileWatcherDelegate() {}
virtual ~ConfigFileWatcherDelegate() {}
MOCK_METHOD1(OnConfigUpdated, void(const std::string&));
MOCK_METHOD0(OnConfigWatcherError, void());
private:
DISALLOW_COPY_AND_ASSIGN(ConfigFileWatcherDelegate);
};
} // namespace
class ConfigFileWatcherTest : public testing::Test {
public:
ConfigFileWatcherTest();
~ConfigFileWatcherTest() override;
// testing::Test overrides
void SetUp() override;
void TearDown() override;
// Stops the config file watcher.
void StopWatcher();
protected:
base::MessageLoopForUI message_loop_;
base::RunLoop run_loop_;
ConfigFileWatcherDelegate delegate_;
// Path to the configuration file used.
base::FilePath config_file_;
// The configuration file watcher that is being tested.
scoped_ptr<ConfigFileWatcher> watcher_;
};
ConfigFileWatcherTest::ConfigFileWatcherTest() {
}
ConfigFileWatcherTest::~ConfigFileWatcherTest() {
}
void ConfigFileWatcherTest::StopWatcher() {
watcher_.reset();
}
void ConfigFileWatcherTest::SetUp() {
EXPECT_TRUE(base::CreateTemporaryFile(&config_file_));
// Arrange to run |message_loop_| until no components depend on it.
scoped_refptr<AutoThreadTaskRunner> task_runner = new AutoThreadTaskRunner(
message_loop_.task_runner(), run_loop_.QuitClosure());
scoped_refptr<AutoThreadTaskRunner> io_task_runner =
AutoThread::CreateWithType(
"IPC thread", task_runner, base::MessageLoop::TYPE_IO);
// Create an instance of the config watcher.
watcher_.reset(
new ConfigFileWatcher(task_runner, io_task_runner, config_file_));
}
void ConfigFileWatcherTest::TearDown() {
// Delete the test file.
if (!config_file_.empty())
base::DeleteFile(config_file_, false);
}
// Verifies that the initial notification is delivered.
TEST_F(ConfigFileWatcherTest, Basic) {
std::string data("test");
EXPECT_NE(base::WriteFile(config_file_, data.c_str(),
static_cast<int>(data.size())), -1);
EXPECT_CALL(delegate_, OnConfigUpdated(_))
.Times(1)
.WillOnce(InvokeWithoutArgs(this, &ConfigFileWatcherTest::StopWatcher));
EXPECT_CALL(delegate_, OnConfigWatcherError())
.Times(0);
watcher_->Watch(&delegate_);
run_loop_.Run();
}
MATCHER_P(EqualsString, s, "") {
return arg == s;
}
// Verifies that an update notification is sent when the file is changed.
TEST_F(ConfigFileWatcherTest, Update) {
EXPECT_CALL(delegate_, OnConfigUpdated(EqualsString("test")))
.Times(1)
.WillOnce(InvokeWithoutArgs(this, &ConfigFileWatcherTest::StopWatcher));
EXPECT_CALL(delegate_, OnConfigWatcherError())
.Times(0);
watcher_->Watch(&delegate_);
// Modify the watched file.
std::string data("test");
EXPECT_NE(base::WriteFile(config_file_, data.c_str(),
static_cast<int>(data.size())), -1);
run_loop_.Run();
}
} // namespace remoting
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