feat: fix signaling and implement a ping-pong signal/slot test

src/Core/testing/PingPongTest.cpp

@@ -0,0 +1,52 @@
+#include "Core/Object.h"
+#include "Core/Signal.h"
+#include "testing-prototype.h"
+#include <iostream>
+
+using namespace uLib;
+
+class Ping : public Object {
+public:
+signals:
+  void PingSignal(int count);
+public slots:
+  void OnPong(int count) {
+    std::cout << "Ping received Pong " << count << std::endl;
+    if (count > 0)
+      ULIB_SIGNAL_EMIT(Ping::PingSignal, count - 1);
+  }
+};
+
+void Ping::PingSignal(int count) { ULIB_SIGNAL_EMIT(Ping::PingSignal, count); }
+
+class Pong : public Object {
+public:
+signals:
+  void PongSignal(int count);
+public slots:
+  void OnPing(int count) {
+    std::cout << "Pong received Ping " << count << std::endl;
+    if (count > 0)
+      ULIB_SIGNAL_EMIT(Pong::PongSignal, count - 1);
+  }
+};
+
+void Pong::PongSignal(int count) { ULIB_SIGNAL_EMIT(Pong::PongSignal, count); }
+
+int main() {
+  BEGIN_TESTING(PingPong);
+  Ping ping;
+  Pong pong;
+
+  std::cout << "Connecting ping to pong" << std::endl;
+  Object::connect(&ping, &Ping::PingSignal, &pong, &Pong::OnPing);
+
+  std::cout << "Connecting pong to ping" << std::endl;
+  Object::connect(&pong, &Pong::PongSignal, &ping, &Ping::OnPong);
+
+  std::cout << "Emitting PingSignal(5)" << std::endl;
+  ping.PingSignal(5);
+
+  END_TESTING;
+  return 0;
+}