EmbeddedServer::isRunning PHP Method

    function isRunning()
    {
        $returnValue = $this->_runScript('check', false);
        return $returnValue === true;
    }

 /**
  * @covers EmbeddedServer
  */
 public function testStartStopIsRunning()
 {
     // Check whether the server is currently running.
     $running = $this->embeddedServer->isRunning();
     if ($running) {
         // If the server is running we stop it, then start it.
         // Stop the server.
         self::assertTrue($this->embeddedServer->stopAndWait());
         // Restart the server.
         self::assertTrue($this->embeddedServer->start());
         self::assertTrue($this->embeddedServer->isRunning());
     } else {
         // If the server is stopped, we start it, then stop it.
         // Start the server.
         self::assertTrue($this->embeddedServer->start());
         self::assertTrue($this->embeddedServer->isRunning());
         // Stop the server.
         self::assertTrue($this->embeddedServer->stopAndWait());
     }
 }