add linux gcc test ci

tests/test_rest_rpc.cpp

@@ -0,0 +1,35 @@
+#include <chrono>
+#include <fstream>
+#include <iostream>
+#include <thread>
+#include <rest_rpc.hpp>
+#include "doctest/doctest.h"
+
+using namespace rest_rpc;
+using namespace rpc_service;
+
+struct dummy {
+  int add(rpc_conn conn, int a, int b) {
+    // auto shared_conn = conn.lock();
+    // if (shared_conn) {
+    //   shared_conn->set_user_data(std::string("aa"));
+    //   auto s = conn.lock()->get_user_data<std::string>();
+    //   std::cout << s << '\n'; // aa
+    // }
+    return a + b;
+  }
+};
+
+TEST_CASE("test_sync_add") {
+    rpc_server server(9000, std::thread::hardware_concurrency());
+    dummy d;
+    server.register_handler("add", &dummy::add, &d);
+    server.async_run();
+    std::this_thread::sleep_for(std::chrono::milliseconds(300));
+
+    rpc_client client("127.0.0.1", 9000);
+    bool r = client.connect();
+    CHECK(r);
+    auto result = client.call<int>("add", 1, 2);
+    CHECK_EQ(result, 3);
+}