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