CodeHelper.php

<?php
namespace Codeception\Module;

class CodeHelper extends \Codeception\Module
{
    /**
     * @param \Symfony\Component\DomCrawler\Crawler $node
     * @param string $text
     */
    public function seeNodeText($node, $text)
    {
        $this->assertTrue(strpos($node->text(), $text) !== false);
    }

    /**
     * @param \Symfony\Component\DomCrawler\Crawler $node
     * @param mixed $cssClass
     */
    public function seeNodeCssClass($node, $cssClass)
    {
        if (is_string($cssClass)) {
            $cssClass = explode(' ', $cssClass);
        }
        foreach ($cssClass as $className) {
            $this->assertTrue(in_array($className, explode(' ', $node->attr('class'))));
        }
    }

    /**
     * @param \Symfony\Component\DomCrawler\Crawler $node
     * @param string $name
     * @param string $value
     */
    public function seeNodeAttribute($node, $name, $value = null)
    {
        $attr = $node->attr($name);
        $this->assertNotEquals(null, $attr);
        if ($value !== null) {
            $this->assertEquals($value, $attr);
        }
    }

    /**
     * @param \Symfony\Component\DomCrawler\Crawler $node
     * @param array $attributes
     */
    public function seeNodeAttributes($node, array $attributes)
    {
        foreach ($attributes as $name => $value) {
            $this->seeNodeAttribute($node, $name, $value);
        }
    }

    /**
     * @param \Symfony\Component\DomCrawler\Crawler $node
     * @param array $elements
     */
    public function seeNodeChildren($node, array $elements)
    {
        foreach ($node->children() as $i => $child) {
            $this->assertEquals($elements[$i], $child->tagName);
        }
    }

    /**
     * @param string $content
     * @param string $selector
     * @return \Symfony\Component\DomCrawler\Crawler
     */
    public function createNode($content, $selector = null)
    {
        $crawler = new \Symfony\Component\DomCrawler\\Crawler;
        $crawler->addContent($content);
        if ($selector !== null) {
            $node = $crawler->filter($selector);
            $this->assertNotEquals(null, $node);
            return $node;
        }
        return $crawler;
    }
}