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// Copyright (c) 2011 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 <string>
#include "base/basictypes.h"
#include "base/memory/scoped_ptr.h"
#include "base/process/process.h"
#include "base/test/multiprocess_test.h"
#include "ipc/ipc_channel.h"
#include "ipc/ipc_channel_factory.h"
#include "ipc/ipc_channel_proxy.h"
#include "ipc/ipc_multiprocess_test.h"
namespace base {
class MessageLoop;
// A test fixture for multiprocess IPC tests. Such tests include a "client" side
// (running in a separate process). The same client may be shared between
// several different tests.
class IPCTestBase : public base::MultiProcessTest {
// The channel name is based on the client's name. This is a public static
// helper to be used by the client-side code; server-side test code should
// usually not use this (directly).
static std::string GetChannelName(const std::string& test_client_name);
~IPCTestBase() override;
void TearDown() override;
// Initializes the test to use the given client and creates an IO message loop
// on the current thread.
void Init(const std::string& test_client_name);
// Some tests create separate thread for IO message loop and run non-IO
// message loop on the main thread. As IPCTestBase creates IO message loop by
// default, such tests need to provide a custom message loop for the main
// thread.
void InitWithCustomMessageLoop(const std::string& test_client_name,
scoped_ptr<base::MessageLoop> message_loop);
// Creates a channel with the given listener and connects to the channel
// (returning true if successful), respectively. Use these to use a channel
// directly. Since the listener must outlive the channel, you must destroy the
// channel before the listener gets destroyed.
void CreateChannel(IPC::Listener* listener);
bool ConnectChannel();
void DestroyChannel();
// Releases or replaces existing channel.
// These are useful for testing specific types of channel subclasses.
scoped_ptr<IPC::Channel> ReleaseChannel();
void SetChannel(scoped_ptr<IPC::Channel> channel);
// Use this instead of CreateChannel() if you want to use some different
// channel specification (then use ConnectChannel() as usual).
void CreateChannelFromChannelHandle(const IPC::ChannelHandle& channel_handle,
IPC::Listener* listener);
// Creates a channel proxy with the given listener and task runner. (The
// channel proxy will automatically create and connect a channel.) You must
// (manually) destroy the channel proxy before the task runner's thread is
// destroyed.
void CreateChannelProxy(
IPC::Listener* listener,
const scoped_refptr<base::SingleThreadTaskRunner>& ipc_task_runner);
void DestroyChannelProxy();
// Starts the client process, returning true if successful; this should be
// done after connecting to the channel.
bool StartClient();
#if defined(OS_POSIX)
// A StartClient() variant that allows caller to pass the FD of IPC pipe
bool StartClientWithFD(int ipcfd);
// Waits for the client to shut down, returning true if successful. Note that
// this does not initiate client shutdown; that must be done by the test
// (somehow). This must be called before the end of the test whenever
// StartClient() was called successfully.
bool WaitForClientShutdown();
IPC::ChannelHandle GetTestChannelHandle();
// Use this to send IPC messages (when you don't care if you're using a
// channel or a proxy).
IPC::Sender* sender() {
return channel_.get() ? static_cast<IPC::Sender*>(channel_.get()) :
IPC::Channel* channel() { return channel_.get(); }
IPC::ChannelProxy* channel_proxy() { return channel_proxy_.get(); }
const base::Process& client_process() const { return client_process_; }
scoped_refptr<base::TaskRunner> task_runner();
virtual scoped_ptr<IPC::ChannelFactory> CreateChannelFactory(
const IPC::ChannelHandle& handle, base::TaskRunner* runner);
virtual bool DidStartClient();
std::string GetTestMainName() const;
std::string test_client_name_;
scoped_ptr<base::MessageLoop> message_loop_;
scoped_ptr<IPC::Channel> channel_;
scoped_ptr<IPC::ChannelProxy> channel_proxy_;
base::Process client_process_;
// Use this to declare the client side for tests using IPCTestBase.
#define MULTIPROCESS_IPC_TEST_CLIENT_MAIN(test_client_name) \
MULTIPROCESS_IPC_TEST_MAIN(test_client_name ## TestClientMain)
#endif // IPC_IPC_TEST_BASE_H_