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#include <cerrno>
#include <functional>
#include <gmock/gmock.h>
#include <gtest/gtest.h>
#include <memory>
#include <sdeventplus/event.hpp>
#include <sdeventplus/exception.hpp>
#include <sdeventplus/source/child.hpp>
#include <sdeventplus/test/sdevent.hpp>
#include <sys/wait.h>
#include <systemd/sd-event.h>
#include <type_traits>
#include <utility>
namespace sdeventplus
{
namespace source
{
namespace
{
using testing::DoAll;
using testing::Return;
using testing::SaveArg;
using testing::SetArgPointee;
using UniqueEvent = std::unique_ptr<Event, std::function<void(Event*)>>;
class ChildTest : public testing::Test
{
protected:
testing::StrictMock<test::SdEventMock> mock;
sd_event_source* const expected_source =
reinterpret_cast<sd_event_source*>(1234);
sd_event* const expected_event = reinterpret_cast<sd_event*>(2345);
UniqueEvent event = make_event(expected_event);
UniqueEvent make_event(sd_event* event)
{
auto deleter = [this, event](Event* e) {
EXPECT_CALL(this->mock, sd_event_unref(event))
.WillOnce(Return(nullptr));
delete e;
};
return UniqueEvent(new Event(event, std::false_type(), &mock), deleter);
}
void expect_destruct()
{
{
testing::InSequence sequence;
EXPECT_CALL(mock, sd_event_source_set_enabled(expected_source,
SD_EVENT_OFF))
.WillOnce(Return(0));
EXPECT_CALL(mock, sd_event_source_unref(expected_source))
.WillOnce(Return(nullptr));
}
EXPECT_CALL(mock, sd_event_unref(expected_event))
.WillOnce(Return(nullptr));
}
};
TEST_F(ChildTest, ConstructSuccess)
{
const pid_t pid = 50;
const int options = WEXITED;
EXPECT_CALL(mock, sd_event_ref(expected_event))
.WillOnce(Return(expected_event));
sd_event_child_handler_t handler;
EXPECT_CALL(mock, sd_event_add_child(expected_event, testing::_, pid,
options, testing::_, nullptr))
.WillOnce(DoAll(SetArgPointee<1>(expected_source), SaveArg<4>(&handler),
Return(0)));
void* userdata;
EXPECT_CALL(mock, sd_event_source_set_userdata(expected_source, testing::_))
.WillOnce(DoAll(SaveArg<1>(&userdata), Return(nullptr)));
int completions = 0;
const siginfo_t* return_si;
Child::Callback callback = [&](Child&, const siginfo_t* si) {
return_si = si;
completions++;
};
Child child(*event, pid, options, std::move(callback));
EXPECT_FALSE(callback);
EXPECT_EQ(&child, userdata);
EXPECT_EQ(0, completions);
const siginfo_t* expected_si = reinterpret_cast<siginfo_t*>(865);
EXPECT_EQ(0, handler(nullptr, expected_si, &child));
EXPECT_EQ(1, completions);
EXPECT_EQ(expected_si, return_si);
child.set_callback(std::bind([]() {}));
EXPECT_EQ(0, handler(nullptr, expected_si, &child));
EXPECT_EQ(1, completions);
expect_destruct();
}
TEST_F(ChildTest, ConstructError)
{
const pid_t pid = 50;
const int options = WEXITED;
EXPECT_CALL(mock, sd_event_add_child(expected_event, testing::_, pid,
options, testing::_, nullptr))
.WillOnce(Return(-EINVAL));
int completions = 0;
Child::Callback callback = [&completions](Child&, const siginfo_t*) {
completions++;
};
EXPECT_THROW(Child(*event, pid, options, std::move(callback)),
SdEventError);
EXPECT_TRUE(callback);
EXPECT_EQ(0, completions);
}
class ChildMethodTest : public ChildTest
{
protected:
std::unique_ptr<Child> child;
void SetUp()
{
const pid_t pid = 50;
const int options = WEXITED;
EXPECT_CALL(mock, sd_event_ref(expected_event))
.WillOnce(Return(expected_event));
EXPECT_CALL(mock, sd_event_add_child(expected_event, testing::_, pid,
options, testing::_, nullptr))
.WillOnce(DoAll(SetArgPointee<1>(expected_source), Return(0)));
EXPECT_CALL(mock,
sd_event_source_set_userdata(expected_source, testing::_))
.WillOnce(Return(nullptr));
child = std::make_unique<Child>(*event, pid, options,
[](Child&, const siginfo_t*) {});
}
void TearDown()
{
expect_destruct();
child.reset();
}
};
TEST_F(ChildMethodTest, GetPidSuccess)
{
const pid_t pid = 32;
EXPECT_CALL(mock,
sd_event_source_get_child_pid(expected_source, testing::_))
.WillOnce(DoAll(SetArgPointee<1>(pid), Return(0)));
EXPECT_EQ(pid, child->get_pid());
}
TEST_F(ChildMethodTest, GetPidError)
{
EXPECT_CALL(mock,
sd_event_source_get_child_pid(expected_source, testing::_))
.WillOnce(Return(-EINVAL));
EXPECT_THROW(child->get_pid(), SdEventError);
}
} // namespace
} // namespace source
} // namespace sdeventplus
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