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// Copyright (c) 2006-2008 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.
#ifndef BASE_MULTIPROCESS_TEST_H__
#define BASE_MULTIPROCESS_TEST_H__
#include "base/command_line.h"
#include "base/platform_test.h"
#include "base/process_util.h"
#include "base/string_util.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "testing/multiprocess_func_list.h"
#if defined(OS_POSIX)
#include <sys/types.h>
#include <unistd.h>
#endif
// Command line switch to invoke a child process rather than
// to run the normal test suite.
static const wchar_t kRunClientProcess[] = L"client";
// A MultiProcessTest is a test class which makes it easier to
// write a test which requires code running out of process.
//
// To create a multiprocess test simply follow these steps:
//
// 1) Derive your test from MultiProcessTest.
// 2) Create a mainline function for the child processes and include
// testing/multiprocess_func_list.h.
// See the declaration of the MULTIPROCESS_TEST_MAIN macro
// in that file for an example.
// 3) Call SpawnChild("foo"), where "foo" is the name of
// the function you wish to run in the child processes.
// That's it!
//
class MultiProcessTest : public PlatformTest {
protected:
// Run a child process.
// 'procname' is the name of a function which the child will
// execute. It must be exported from this library in order to
// run.
//
// Example signature:
// extern "C" int __declspec(dllexport) FooBar() {
// // do client work here
// }
//
// Returns the handle to the child, or NULL on failure
//
// TODO(darin): re-enable this once we have base/debug_util.h
// ProcessDebugFlags(&cl, DebugUtil::UNKNOWN, false);
ProcessHandle SpawnChild(const std::wstring& procname) {
CommandLine cl;
ProcessHandle handle = static_cast<ProcessHandle>(NULL);
#if defined(OS_WIN)
std::wstring clstr = cl.command_line_string();
CommandLine::AppendSwitchWithValue(&clstr, kRunClientProcess, procname);
process_util::LaunchApp(clstr, false, true, &handle);
#elif defined(OS_POSIX)
std::vector<std::string> clvec(cl.argv());
std::wstring wswitchstr =
CommandLine::PrefixedSwitchStringWithValue(kRunClientProcess,
procname);
std::string switchstr = WideToUTF8(wswitchstr);
clvec.push_back(switchstr.c_str());
process_util::LaunchApp(clvec, false, &handle);
#endif
return handle;
}
};
#endif // BASE_MULTIPROCESS_TEST_H__
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