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/*
* Copyright © 2013 Canonical Ltd.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Authored by: Thomas Voß <thomas.voss@canonical.com>
*/
#include <core/dbus/message.h>
#include <core/dbus/message_router.h>
#include <gtest/gtest.h>
namespace dbus = core::dbus;
namespace
{
dbus::Message::Ptr a_signal_message(const std::string& path, const std::string& interface, const std::string& name)
{
return dbus::Message::make_signal(
path,
interface,
name);
}
}
// Simple function used by 2 tests below. Use instead of a no-capture lambda
// because, for some reason, it causes -Wmaybe-uninitialized warning deep inside
// std::function's header file.
// See [1] for a similar issue in repowerd.
//
// [1]: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1031428
static dbus::Message::Type simple_mapper(const dbus::Message::Ptr& msg)
{
return msg->type();
}
TEST(MessageRouterForType, ARegisteredRouteIsInvokedForMessageOfMatchingType)
{
bool invoked {false};
dbus::MessageRouter<dbus::Message::Type> router(simple_mapper);
router.install_route(dbus::Message::Type::signal, [&](const dbus::Message::Ptr& msg)
{
if (msg->type() == dbus::Message::Type::signal)
invoked = true;
});
auto signal = a_signal_message("/core/DBus", "org.freedesktop.DBus", "LaLeLu");
router(signal);
EXPECT_TRUE(invoked);
}
TEST(MessageRouterForType, HandlerDoesNotDeadlock)
{
bool invoked {false};
dbus::MessageRouter<dbus::Message::Type> router(simple_mapper);
router.install_route(dbus::Message::Type::signal, [&](const dbus::Message::Ptr& msg)
{
if (msg->type() == dbus::Message::Type::signal) {
/* This will deadlock if the router has not released it's
* internal lock before calling this handler.
*/
router.uninstall_route(dbus::Message::Type::signal);
invoked = true;
}
});
auto signal = a_signal_message("/core/DBus", "org.freedesktop.DBus", "LaLeLu");
router(signal);
EXPECT_TRUE(invoked);
}
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