boost/libs/process/test/async.cpp

// Copyright (c) 2006, 2007 Julio M. Merino Vidal
// Copyright (c) 2008 Ilya Sokolov, Boris Schaeling
// Copyright (c) 2009 Boris Schaeling
// Copyright (c) 2010 Felipe Tanus, Boris Schaeling
// Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

#define BOOST_TEST_MAIN
#define BOOST_TEST_IGNORE_SIGCHLD
#include <boost/test/included/unit_test.hpp>

#include <boost/process/error.hpp>
#include <boost/process/async.hpp>
#include <boost/process/io.hpp>
#include <boost/process/child.hpp>

#include <boost/thread.hpp>
#include <future>

#include <boost/system/error_code.hpp>

#include <boost/algorithm/string/predicate.hpp>


using namespace std;

namespace bp = boost::process;

BOOST_AUTO_TEST_CASE(async_wait, *boost::unit_test::timeout(2))
{
    using boost::unit_test::framework::master_test_suite;
    using namespace boost::asio;

    boost::asio::io_context io_context;

    bool exit_called = false;
    int exit_code = 0;
    std::error_code ec;
    bp::child c(
        master_test_suite().argv[1],
        "test", "--exit-code", "123",
        ec,
        io_context,
        bp::on_exit([&](int exit, const std::error_code& ec_in)
                {
                    exit_code = exit; exit_called=true;
                    BOOST_CHECK(!ec_in);
                })
    );

    BOOST_REQUIRE(!ec);
    io_context.run();
    BOOST_CHECK(exit_called);
    BOOST_CHECK_EQUAL(exit_code, 123);
    BOOST_CHECK_EQUAL(c.exit_code(), 123);
}


BOOST_AUTO_TEST_CASE(async_future, *boost::unit_test::timeout(2))
{
    using boost::unit_test::framework::master_test_suite;
    using namespace boost::asio;

    boost::asio::io_context io_context;

    std::error_code ec;
    std::future<int> fut;
    bp::child c(
        master_test_suite().argv[1],
        "test", "--exit-code", "42",
        ec,
        io_context,
        bp::on_exit=fut
    );

    BOOST_REQUIRE(!ec);
    io_context.run();
    BOOST_REQUIRE(fut.valid());
    BOOST_CHECK_EQUAL(fut.get(), 42);
}


BOOST_AUTO_TEST_CASE(async_out_stream, *boost::unit_test::timeout(2))
{
    using boost::unit_test::framework::master_test_suite;

    boost::asio::io_context io_context;


    std::error_code ec;

    boost::asio::streambuf buf;

    bp::child c(master_test_suite().argv[1],
                "test", "--echo-stdout", "abc",
                bp::std_out > buf,
                io_context,
                ec);
    BOOST_REQUIRE(!ec);


    io_context.run();
    std::istream istr(&buf);

    std::string line;
    std::getline(istr, line);
    BOOST_REQUIRE_GE(line.size(), 3);
    BOOST_CHECK(boost::algorithm::starts_with(line, "abc"));
    c.wait();
}



BOOST_AUTO_TEST_CASE(async_in_stream, *boost::unit_test::timeout(2))
{

    using boost::unit_test::framework::master_test_suite;

    boost::asio::io_context io_context;


    std::error_code ec;

    boost::asio::streambuf buf;
    boost::asio::streambuf in_buf;


    std::ostream ostr(&in_buf);
    ostr << "-string" << endl ;

    bp::child c(
        master_test_suite().argv[1],
        "test", "--prefix-once", "test",
        bp::std_in  < in_buf,
        bp::std_out > buf,
        io_context,
        ec
    );
    BOOST_REQUIRE(!ec);


    io_context.run();
    std::istream istr(&buf);

    std::string line;
    std::getline(istr, line);

    std::string val = "test-string";
    BOOST_REQUIRE_GE(line.size(), val.size());
    if (line >= val)
        BOOST_CHECK(boost::algorithm::starts_with(line, val));

    
    c.wait();
}


BOOST_AUTO_TEST_CASE(async_error, *boost::unit_test::timeout(2))
{
    using boost::unit_test::framework::master_test_suite;
    using namespace boost::asio;

    boost::asio::io_context io_context;

    bool exit_called = false;
    std::error_code ec;
    bp::child c(
        "doesn't exist",
        ec,
        io_context,
        bp::on_exit([&](int exit, const std::error_code& ec_in)
                {
                    exit_called=true;
                })
    );

    BOOST_REQUIRE(ec);
    io_context.run();
    BOOST_CHECK(!exit_called);
}