EventManager/tests/test_basic.cpp

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/*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/.
*
* Copyright 2021 Dominik Meyer <dmeyer@federationhq.de>
* This file is part of the EventManager distribution hosted at https://gitea.federationhq.de/byterazor/EventManager.git
*/
/** @file */
#define CATCH_CONFIG_MAIN
#include <catch2/catch.hpp>
#include <EventManager/Event.hpp>
#include <EventManager/Manager.hpp>
#include <EventManager/Participant.hpp>
#include <memory>
#include <limits>
const static std::uint32_t TEST_EVENT0 = 10;
const static std::uint32_t TEST_EVENT1 = 20;
class myParticipant : public EventManager::Participant
{
private:
bool receivedEvent_;
std::uint32_t eventType_;
std::uint32_t id_;
void shutdown_() {
_unsubscribe();
}
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void init_() {
_subscribe(eventType_);
_enableScheduling();
}
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void schedule_() {
std::shared_ptr<EventManager::Event> event = nullptr;
_lockQueue();
if (_hasEvents())
{
event = _fetchEvent();
}
_unlockQueue();
if (event == nullptr)
{
return;
}
if (event->type() == EventManager::EVENT_TYPE_SHUTDOWN)
{
shutdown_();
}
else if (event->type() == eventType_)
{
receivedEvent_=true;
}
}
public:
myParticipant(std::uint32_t id,std::uint32_t eventType) : EventManager::Participant()
{
id_=id;
receivedEvent_=false;
eventType_=eventType;
}
bool eventReceived() const { return receivedEvent_;}
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};
SCENARIO("Basic Usage of EventManager", "[Manager]")
{
GIVEN("an EventManager::Manager and two participants")
{
std::shared_ptr<EventManager::Manager> manager;
REQUIRE_NOTHROW([&]()
{
manager = std::make_shared<EventManager::Manager>();
}());
REQUIRE(manager->empty() == true);
std::shared_ptr<myParticipant> participant0;
REQUIRE_NOTHROW([&]()
{
participant0 = std::make_shared<myParticipant>(0,TEST_EVENT0);
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manager->connect(participant0);
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}());
REQUIRE(manager->empty() == false);
std::shared_ptr<myParticipant> participant1;
REQUIRE_NOTHROW([&]()
{
participant1 = std::make_shared<myParticipant>(1,TEST_EVENT1);
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manager->connect(participant1);
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}());
REQUIRE(manager->empty() == false);
REQUIRE_NOTHROW([&]()
{
manager->start();
}());
REQUIRE(manager->isRunning() == true);
WHEN("emitting shutdown event")
{
std::shared_ptr<EventManager::Event> shutdown = std::make_shared<EventManager::Event>(EventManager::EVENT_TYPE_SHUTDOWN);
manager->emit(shutdown);
manager->waitEmpty(3000);
THEN("participants are shutting down")
{
REQUIRE(manager->empty() == true);
REQUIRE_NOTHROW([&]()
{
manager->stop();
}());
REQUIRE(manager->isRunning() == false);
}
}
WHEN("emitting events event")
{
std::shared_ptr<EventManager::Event> shutdown = std::make_shared<EventManager::Event>(EventManager::EVENT_TYPE_SHUTDOWN);
std::shared_ptr<EventManager::Event> e0 = std::make_shared<EventManager::Event>(TEST_EVENT0);
std::shared_ptr<EventManager::Event> e1 = std::make_shared<EventManager::Event>(TEST_EVENT1);
manager->emit(e0);
manager->emit(e1);
manager->emit(shutdown);
manager->waitEmpty(3000);
THEN("participants recevied events and are shutting down")
{
REQUIRE(manager->empty() == true);
REQUIRE(participant0->eventReceived());
REQUIRE(participant1->eventReceived());
REQUIRE_NOTHROW([&]()
{
manager->stop();
}());
REQUIRE(manager->isRunning() == false);
}
}
}
}