/**
  * Create test plan.
  *
  * @param string $size size of the test plan.
  * @param string $proxy proxy url
  * @param string $port (optional) port to be used for proxy server.
  * @param bool $enable only enable it.
  */
 public function create_test_plan($size, $proxy = "localhost:9090", $port = '', $enable = false)
 {
     global $CFG, $DB;
     // Check if site is initialised for performance testing.
     //TODO:
     // Drop old testplan data dir, ensuring we have fresh data everytime we run the tool.
     util::drop_dir(util::get_tool_dir(), true);
     // Initialise BrowserMobProxy.
     $browsermobproxy = new browsermobproxyclient($proxy);
     // Use the proxy server url now.
     $proxyurl = $browsermobproxy->create_connection($port);
     echo "Proxy server running at: " . $proxyurl . PHP_EOL;
     // Create behat.yml.
     util::create_test_feature($size, array(), $proxyurl);
     util::set_option('size', $size);
     // Run test plan.
     if (!$enable) {
         $cmd = "vendor/bin/behat --config " . util::get_tool_dir() . DIRECTORY_SEPARATOR . 'behat.yml ';
         echo "Run " . PHP_EOL . '  - ' . $cmd . PHP_EOL . PHP_EOL;
     } else {
         $this->run_plan_features();
     }
     // Close BrowserMobProxy connection.
     $browsermobproxy->close_connection();
 }
 /**
  * After suite event.
  *
  * @param SuiteEvent $event
  * @AfterSuite
  */
 public static function after_suite(SuiteEvent $event)
 {
     $browsermobproxy = new browsermobproxyclient(util::get_option('proxyurl'));
     $browsermobproxy->close_connection();
     echo PHP_EOL . "Test plan has been generated under:" . PHP_EOL;
     echo " - " . util::get_final_testplan_path() . PHP_EOL;
 }