Behat, MinkExtension & Selenium2 Driver - functions to wait

TimerFeatureContext.php

<?php
/**
 * some functions to make a pause (minutes, seconds or milliseconds)
 * The last one is a little more tricky as she will stop the Scenario to wait for the end of the loading of the
 * scripts behind (you must be cautious if a script is created to run all the time)
 *
 * @author netraagal
 */
namespace App\Features;
use Behat\Mink\Driver\Selenium2Driver;
use \Exception;

class TimerFeatureContext extends MinkContext implements SnippetAcceptingContext
{
  /**
     * waitMinutes
     *
     * @When /^(?:|I )wait (?:|for )(?P<time>\d+) minutes?$/
     * 
     * @param   int   $time       number of minutes to wait
     * @return  FeatureContext
     */
    public function waitMinutes(int $time): self
    {
        sleep(60 * $time);
        
        return $this;
    }

    /**
     * waitSeconds
     *
     * @When /^(?:|I )wait (?:|for )(?P<time>\d+) seconds?$/
     * 
     * @param   int   $time       number of seconds to wait
     * @return  FeatureContext
     */
    public function waitSeconds(int $time): self
    {
        sleep($time);
        
        return $this;
    }

    /**
     * waitMilliseconds
     *
     * @When /^(?:|I )wait (?:|for )(?P<time>\d+) milliseconds?$/
     * 
     * @param   int   $time       number of milliseconds to wait
     * @return  FeatureContext
     */
    public function waitMilliseconds(int $time): self
    {
        sleep($time / 1000);
        
        return $this;
    }

    /**
     * waitLoading
     * Not the author but the function is to much based on what he has done to not be named
     * @author    Gildas Quéméner <gildas@akeneo.com>
     *
     * @When /^(?:|I )wait (?:|for )(?:|end of )loading$/
     *
     * @return  FeatureContext
     */
    public function waitLoading(): self
    {
        $session = $this->getSession();
        if (!$session->getDriver() instanceof Selenium2Driver)
            return $this;

        $time = 15000;
        $conditions = [
            "document.readyState == 'complete'",
            "typeof $ != 'undefined'",
            "!$.active",
        ];
        $condition = implode(' && ', $conditions);

        $this->waitMilliseconds(100);
        $session->wait($time, $condition);

        if (!$session->evaluateScript($condition)) {
            throw new Exception(sprintf(
                'Timeout of %d reached when checking on "%s"',
                $time,
                $condition
            ));    
        }
      
        foreach ($conditions as $condition) {
            $result = $this->getSession()->evaluateScript($condition);
            if (!$result) {
               throw new Exception(sprintf(
                   'Timeout of %d reached when checking on "%s"',
                   $time,
                   $condition
               ));
            }
        }
        return $this;
    }
}