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/*
* Copyright © 2015 Canonical Ltd.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Authored by: Alexandros Frantzis <alexandros.frantzis@canonical.com>
*/
#include "src/external_spinner.h"
#include "run_command.h"
#include "spin_wait.h"
#include <fstream>
#include <chrono>
#include <thread>
#include <stdexcept>
#include <boost/throw_exception.hpp>
#include <gtest/gtest.h>
#include <gmock/gmock.h>
namespace
{
std::string executable_path()
{
std::vector<char> link_vec(64, 0);
ssize_t nread{0};
do
{
link_vec.resize(link_vec.size() * 2);
nread = readlink("/proc/self/exe", link_vec.data(), link_vec.size());
}
while (nread == static_cast<ssize_t>(link_vec.size()));
std::string link{link_vec.begin(), link_vec.begin() + nread};
return link.substr(0, link.rfind("/"));
}
std::vector<pid_t> pidof(std::string const& process_name)
{
auto cmd_string = "pidof " + process_name;
auto const pid_str = usc::test::run_command(cmd_string);
std::vector<pid_t> pids;
std::stringstream ss{pid_str};
while (ss)
{
pid_t pid{0};
ss >> pid;
if (pid > 0)
pids.push_back(pid);
}
return pids;
}
struct AnExternalSpinner : testing::Test
{
std::vector<pid_t> spinner_pids()
{
std::vector<pid_t> pids;
usc::test::spin_wait_for_condition_or_timeout(
[&pids, this] { pids = pidof(spinner_cmd); return !pids.empty(); },
timeout);
if (pids.empty())
BOOST_THROW_EXCEPTION(std::runtime_error("spinner_pids timed out"));
return pids;
}
std::vector<std::string> environment_of_spinner()
{
auto const pids = spinner_pids();
if (pids.size() > 1)
BOOST_THROW_EXCEPTION(std::runtime_error("Detected multiple spinner processes"));
std::vector<std::string> env;
std::string const proc_path{"/proc/" + std::to_string(pids[0]) + "/environ"};
std::ifstream env_file{proc_path};
std::string val;
while (std::getline(env_file, val, '\0'))
env.push_back(val);
return env;
}
void wait_for_spinner_to_terminate()
{
usc::test::spin_wait_for_condition_or_timeout(
[this] { return pidof(spinner_cmd).empty(); },
timeout);
}
std::string const spinner_cmd{executable_path() + "/usc_test_helper_wait_for_signal"};
std::string const mir_socket{"usc_mir_socket"};
std::chrono::milliseconds const timeout{3000};
usc::ExternalSpinner spinner{spinner_cmd, mir_socket};
};
}
TEST_F(AnExternalSpinner, starts_spinner_process)
{
using namespace testing;
spinner.ensure_running();
EXPECT_THAT(spinner_pids(), SizeIs(1));
}
TEST_F(AnExternalSpinner, kills_spinner_process_on_destruction)
{
using namespace testing;
{
usc::ExternalSpinner another_spinner{spinner_cmd, "bla"};
another_spinner.ensure_running();
EXPECT_THAT(spinner_pids(), SizeIs(1));
}
wait_for_spinner_to_terminate();
}
TEST_F(AnExternalSpinner, kills_spinner_process_on_request)
{
using namespace testing;
spinner.ensure_running();
EXPECT_THAT(spinner_pids(), SizeIs(1));
spinner.kill();
wait_for_spinner_to_terminate();
}
TEST_F(AnExternalSpinner, starts_spinner_process_only_once)
{
using namespace testing;
spinner.ensure_running();
spinner.ensure_running();
EXPECT_THAT(spinner_pids(), SizeIs(1));
}
TEST_F(AnExternalSpinner, sets_mir_socket_in_spinner_process_environment)
{
using namespace testing;
spinner.ensure_running();
EXPECT_THAT(environment_of_spinner(), Contains("MIR_SOCKET=" + mir_socket));
}
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