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// Copyright 2013 The Chromium Authors
// 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 <memory>
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/message_loop/message_pump_type.h"
#include "base/run_loop.h"
#include "base/test/task_environment.h"
#include "remoting/base/auto_thread.h"
#include "remoting/base/auto_thread_task_runner.h"
#include "testing/gmock/include/gmock/gmock.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() = default;
ConfigFileWatcherDelegate(const ConfigFileWatcherDelegate&) = delete;
ConfigFileWatcherDelegate& operator=(const ConfigFileWatcherDelegate&) =
delete;
~ConfigFileWatcherDelegate() override = default;
MOCK_METHOD1(OnConfigUpdated, void(const std::string&));
MOCK_METHOD0(OnConfigWatcherError, void());
};
} // 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::test::SingleThreadTaskEnvironment task_environment_{
base::test::SingleThreadTaskEnvironment::MainThreadType::UI};
base::RunLoop run_loop_;
ConfigFileWatcherDelegate delegate_;
// Path to the configuration file used.
base::FilePath config_file_;
// The configuration file watcher that is being tested.
std::unique_ptr<ConfigFileWatcher> watcher_;
};
ConfigFileWatcherTest::ConfigFileWatcherTest() = default;
ConfigFileWatcherTest::~ConfigFileWatcherTest() = default;
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(
task_environment_.GetMainThreadTaskRunner(), run_loop_.QuitClosure());
scoped_refptr<AutoThreadTaskRunner> io_task_runner =
AutoThread::CreateWithType("IPC thread", task_runner,
base::MessagePumpType::IO);
// Create an instance of the config watcher.
watcher_ = std::make_unique<ConfigFileWatcher>(task_runner, io_task_runner,
config_file_);
}
void ConfigFileWatcherTest::TearDown() {
// Delete the test file.
if (!config_file_.empty()) {
base::DeleteFile(config_file_);
}
}
// Verifies that the initial notification is delivered.
TEST_F(ConfigFileWatcherTest, Basic) {
std::string data("test");
EXPECT_TRUE(base::WriteFile(config_file_, data));
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_TRUE(base::WriteFile(config_file_, data));
run_loop_.Run();
}
} // namespace remoting
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