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#include "util/SafeSignal.hpp"
#include <glibmm.h>
#if __has_include(<catch2/catch_test_macros.hpp>)
#include <catch2/catch_test_macros.hpp>
#else
#include <catch2/catch.hpp>
#endif
#include <thread>
#include <type_traits>
#include "fixtures/GlibTestsFixture.hpp"
using namespace waybar;
template <typename T>
using remove_cvref_t = typename std::remove_cv<typename std::remove_reference<T>::type>::type;
/**
* Basic sanity test for SafeSignal:
* check that type deduction works, events are delivered and the order is right
* Running this with -fsanitize=thread should not fail
*/
TEST_CASE_METHOD(GlibTestsFixture, "SafeSignal basic functionality", "[signal][thread][util]") {
const int NUM_EVENTS = 100;
int count = 0;
int last_value = 0;
SafeSignal<int, std::string> test_signal;
const auto main_tid = std::this_thread::get_id();
std::thread producer;
// timeout the test in 500ms
setTimeout(500);
test_signal.connect([&](auto val, auto str) {
static_assert(std::is_same<int, decltype(val)>::value);
static_assert(std::is_same<std::string, decltype(str)>::value);
// check that we're in the same thread as the main loop
REQUIRE(std::this_thread::get_id() == main_tid);
// check event order
REQUIRE(val == last_value + 1);
last_value = val;
if (++count >= NUM_EVENTS) {
this->quit();
};
});
run([&]() {
// check that events from the same thread are delivered and processed synchronously
test_signal.emit(1, "test");
REQUIRE(count == 1);
// start another thread and generate events
producer = std::thread([&]() {
for (auto i = 2; i <= NUM_EVENTS; ++i) {
test_signal.emit(i, "test");
}
});
});
producer.join();
REQUIRE(count == NUM_EVENTS);
}
template <typename T>
struct TestObject {
T value;
unsigned copied = 0;
unsigned moved = 0;
TestObject(const T& v) : value(v) {};
~TestObject() = default;
TestObject(const TestObject& other)
: value(other.value), copied(other.copied + 1), moved(other.moved) {}
TestObject(TestObject&& other) noexcept
: value(std::move(other.value)),
copied(std::exchange(other.copied, 0)),
moved(std::exchange(other.moved, 0) + 1) {}
TestObject& operator=(const TestObject& other) {
value = other.value;
copied = other.copied + 1;
moved = other.moved;
return *this;
}
TestObject& operator=(TestObject&& other) noexcept {
value = std::move(other.value);
copied = std::exchange(other.copied, 0);
moved = std::exchange(other.moved, 0) + 1;
return *this;
}
bool operator==(T other) const { return value == other; }
operator T() const { return value; }
};
/*
* Check the number of copies/moves performed on the object passed through SafeSignal
*/
TEST_CASE_METHOD(GlibTestsFixture, "SafeSignal copy/move counter", "[signal][thread][util]") {
const int NUM_EVENTS = 3;
int count = 0;
SafeSignal<TestObject<int>> test_signal;
std::thread producer;
// timeout the test in 500ms
setTimeout(500);
test_signal.connect([&](auto& val) {
static_assert(std::is_same<TestObject<int>, remove_cvref_t<decltype(val)>>::value);
/* explicit move in the producer thread */
REQUIRE(val.moved <= 1);
/* copy within the SafeSignal queuing code */
REQUIRE(val.copied <= 1);
if (++count >= NUM_EVENTS) {
this->quit();
};
});
run([&]() {
test_signal.emit(1);
REQUIRE(count == 1);
producer = std::thread([&]() {
for (auto i = 2; i <= NUM_EVENTS; ++i) {
TestObject<int> t{i};
// check that signal.emit accepts moved objects
test_signal.emit(std::move(t));
}
});
});
producer.join();
REQUIRE(count == NUM_EVENTS);
}
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