Big rejig of library tests

Includes full consistency between C/C++ library tests

test/lib/cpp/01-server-keepalive-pingreq.cpp

@@ -0,0 +1,50 @@
+#include <cassert>
+#include <mosquittopp.h>
+
+static int run = -1;
+
+class mosquittopp_test : public mosqpp::mosquittopp
+{
+	public:
+		mosquittopp_test(const char *id);
+
+		void on_connect(int rc);
+};
+
+mosquittopp_test::mosquittopp_test(const char *id) : mosqpp::mosquittopp(id)
+{
+}
+
+void mosquittopp_test::on_connect(int rc)
+{
+	if(rc){
+		exit(1);
+	}
+}
+
+int main(int argc, char *argv[])
+{
+	struct mosquittopp_test *mosq;
+
+	assert(argc == 2);
+	int port = atoi(argv[1]);
+	int rc;
+
+	mosqpp::lib_init();
+
+	mosq = new mosquittopp_test("01-server-keepalive-pingreq");
+	mosq->int_option(MOSQ_OPT_PROTOCOL_VERSION, MQTT_PROTOCOL_V5);
+
+	mosq->connect("localhost", port, 60);
+
+	while(run == -1){
+		rc = mosq->loop();
+		if(rc) break;
+	}
+	delete mosq;
+
+	delete mosq;
+	mosqpp::lib_cleanup();
+
+	return run;
+}