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/*
* Copyright © 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 2 or 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/>.
*/
#include <fcntl.h>
#include "mir/test/pipe.h"
#include "mir/test/test_dispatchable.h"
#include <gtest/gtest.h>
#include <gmock/gmock.h>
namespace mt = mir::test;
namespace md = mir::dispatch;
mt::TestDispatchable::TestDispatchable(std::function<bool(md::FdEvents)> const& target,
md::FdEvents relevant_events)
: target{target},
eventmask{relevant_events}
{
// Need to use O_NONBLOCK here to ensure concurrent dispatch doesn't block indefinitely
// in read()
mt::Pipe pipe{O_NONBLOCK};
read_fd = pipe.read_fd();
write_fd = pipe.write_fd();
}
mt::TestDispatchable::TestDispatchable(std::function<bool(md::FdEvents)> const& target)
: TestDispatchable(target, md::FdEvent::readable)
{
}
mt::TestDispatchable::TestDispatchable(std::function<void()> const& target)
: TestDispatchable([target](md::FdEvents) { target(); return true; })
{
}
mir::Fd mt::TestDispatchable::watch_fd() const
{
return read_fd;
}
bool mt::TestDispatchable::dispatch(md::FdEvents events)
{
auto continue_dispatch = target(events);
if (!(events & md::FdEvent::remote_closed))
{
// There's no way to untrigger remote hangup :)
untrigger();
}
return continue_dispatch;
}
md::FdEvents mt::TestDispatchable::relevant_events() const
{
return eventmask;
}
void mt::TestDispatchable::trigger()
{
using namespace testing;
char dummy{0};
EXPECT_THAT(::write(write_fd, &dummy, sizeof(dummy)),
Eq(static_cast<int>(sizeof dummy)));
}
void mt::TestDispatchable::untrigger()
{
using namespace testing;
char dummy{0};
int val = ::read(read_fd, &dummy, sizeof(dummy));
if (val < 0)
{
EXPECT_THAT(errno, Eq(EAGAIN));
}
else
{
EXPECT_THAT(val, Eq(static_cast<int>(sizeof dummy)));
}
}
void mt::TestDispatchable::hangup()
{
write_fd = mir::Fd{};
}
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