code compiles with new structure

tests/test_tracer_base.cpp

@@ -0,0 +1,69 @@
+#include <unistd.h>
+
+#include <thread>
+#include <mutex>
+#include <functional>
+#include <string>
+#include <iostream>
+#include <chrono>
+#include <cmath>
+
+#include "scout_base/scout_base.hpp"
+
+#define TEST_WITHOUT_SERIAL_HARDWARE
+
+using namespace wescore;
+
+int main(int argc, char **argv)
+{
+    std::string device_name;
+    int32_t baud_rate = 0;
+
+    if (argc == 2)
+    {
+        device_name = {argv[1]};
+        std::cout << "Specified CAN: " << device_name << std::endl;
+    }
+    else if (argc == 3)
+    {
+        device_name = {argv[1]};
+        baud_rate = std::stol(argv[2]);
+        std::cout << "Specified serial: " << device_name << "@" << baud_rate << std::endl;
+    }
+    else
+    {
+        std::cout << "Usage: app_scout_monitor <interface>" << std::endl
+                  << "Example 1: ./app_scout_monitor can1"
+                  << "Example 2: ./app_scout_monitor /dev/ttyUSB0 115200" << std::endl;
+        return -1;
+    }
+
+    ScoutBase scout;
+    scout.Connect(device_name, baud_rate);
+
+    scout.SetLightCommand({ScoutLightCmd::LightMode::CONST_ON, 0, ScoutLightCmd::LightMode::CONST_ON, 0});
+
+    int count = 0;
+    while (true)
+    {
+        scout.SetMotionCommand(0.5, 0.2);
+
+        if(count == 10)
+        {
+            // scout.SetLightCommand({ScoutLightCmd::LightMode::LIGHT_MODE_CONST_OFF, 0, ScoutLightCmd::LightMode::LIGHT_MODE_CONST_OFF, 0});
+            scout.DisableLightCmdControl();
+        }
+
+        auto state = scout.GetScoutState();
+        std::cout << "-------------------------------" << std::endl;
+        std::cout << "control mode: " << static_cast<int>(state.control_mode) << " , base state: " << static_cast<int>(state.base_state) << std::endl;
+        std::cout << "battery voltage: " << state.battery_voltage << std::endl;
+        std::cout << "velocity (linear, angular): " << state.linear_velocity << ", " << state.angular_velocity << std::endl;
+        std::cout << "-------------------------------" << std::endl;
+
+        sleep(1);
+        ++count;
+    }
+
+    return 0;
+}