Arduino code to test how long ESP8266 takes to connect to WiFi

ConnectionTest.ino

IPAddress ip= IPAddress(192,168,1,27);
IPAddress gw= IPAddress(192,168,1,1);
IPAddress subnet= IPAddress(255,255,255,0);
IPAddress dns= IPAddress(192,168,1,1);
static struct station_config conf;
char mac[18] = { 0 };
void setup() {
  start = millis();
  WiFi.config(ip,gw,subnet, dns);
  if (WiFi.SSID()=="") WiFi.begin("SSID","password");
  Serial.begin(115200);
  Serial.println("Starting...");  
  printf("SDK version:%s\n", system_get_sdk_version());
  Serial.print("Start millis = "); 
  Serial.println(start); 
  while (WiFi.status() != WL_CONNECTED) {
        delay(1);
    }
  now = millis();
  codeTime = now - start;
  Serial.print("Now millis = "); 
  Serial.println(now);
  Serial.print("Program Time = "); 
  Serial.println(codeTime);
  wifi_station_get_config(&conf);
  sprintf(mac, "%02X:%02X:%02X:%02X:%02X:%02X", conf.bssid[0], conf.bssid[1], conf.bssid[2], conf.bssid[3], conf.bssid[4], conf.bssid[5]);
  Serial.println(mac);
  //WiFi.begin("SSID","password",6,conf.bssid,1);
  ESP.deepSleep(3*60*ONE_SECOND, WAKE_RF_DEFAULT);
}

void loop() {
  delay(5000); 
}