add enet test

test/blitz/network/Enet_test.cpp

@@ -0,0 +1,47 @@
+#include <blitz/network/EnetClient.h>
+#include <blitz/network/EnetServer.h>
+#include <blitz/utils/Test.h>
+
+using namespace std::chrono_literals;
+
+int main() {
+	static constexpr std::uint16_t port = 25565;
+
+	int serverSendCount = 0;
+	int clientSendCount = 0;
+
+	blitz::network::EnetServer server(port);
+	blitz::network::EnetClient client(Nz::IpAddress{"127.0.0.1:" + std::to_string(port)});
+	blitz::network::EnetClient client1(Nz::IpAddress{"127.0.0.1:" + std::to_string(port)});
+	blitz::network::EnetClient client2(Nz::IpAddress{"127.0.0.1:" + std::to_string(port)});
+	blitz::network::EnetClient client3(Nz::IpAddress{"127.0.0.1:" + std::to_string(port)});
+	blitz::network::EnetClient client4(Nz::IpAddress{"127.0.0.1:" + std::to_string(port)});
+
+	std::this_thread::sleep_for(200ms);
+
+	blitz_test_assert(client.GetConnection().IsConnected());
+
+	for (int i = 0; i < 5; i++) {
+		blitz_test_assert(server.GetConnection(i));
+	}
+
+	server.GetConnection(0)->OnKeepAlive.Connect([&server, &serverSendCount](const blitz::protocol::data::KeepAlive&) {
+		server.GetConnection(0)->SendKeepAlive({69});
+		serverSendCount++;
+	});
+
+	client.GetConnection().OnKeepAlive.Connect([&client, &clientSendCount](const blitz::protocol::data::KeepAlive&) {
+		client.GetConnection().SendKeepAlive({69});
+		clientSendCount++;
+	});
+
+	std::this_thread::sleep_for(200ms);
+
+	client.GetConnection().SendKeepAlive({69});
+
+	std::this_thread::sleep_for(1s);
+
+	blitz_test_assert(serverSendCount > 10 && clientSendCount > 10);
+
+	return BLITZ_TEST_SUCCESSFUL;
+}