Mink + Behat

FeatureContext.php

<?php

use Behat\Behat\Context\ClosuredContextInterface,
	Behat\Behat\Context\TranslatedContextInterface,
	Behat\Behat\Context\BehatContext,
	Behat\Behat\Exception\PendingException;
use Behat\Gherkin\Node\PyStringNode,
	Behat\Gherkin\Node\TableNode;
use Behat\Mink\Driver\GoutteDriver,
	Behat\Mink\Driver\Selenium2Driver,
	Behat\Mink\Session,
	Behat\Mink\Mink;

use Behat\Mink\Selector\CssSelector;

// Browser drivers
require_once(__DIR__ . '/../../mink.phar');

/**
 * Features context.
 */
class FeatureContext extends BehatContext
{
	private $output;
	private $driver;
	protected $mink;
	protected $base;

	public function __construct() {
		// Define variables
		$this->base = 'http://api.jquery.com/';
		$this->mink = new \Behat\Mink\Mink();

		// Set browsers
		$this->mink->registerSession('selenium', new Session(new Selenium2Driver(
			'firefox',
			null,
			'http://api.jquery.com/'
		)));
		$this->mink->registerSession('goutte', new Session(new GoutteDriver()));

		// Set default
		$this->mink->setDefaultSessionName('goutte');

		// Start it
		$this->mink->getSession()->start();

		// open some page in browser:
		$this->mink->getSession()->visit('http://api.jquery.com/');

		// get the current page URL:
		$page = $this->mink->getSession()->getPage();

		// El
		$el = $page->findById('jq-primarySearch');
		echo 'Tag Name: ' . $el->getTagName(); // undefined function getTagName() on a non-object
		exit;
	}

	/**
	 * Since not all Session drivers support base urls this is a wrapper to help
	 * 
	 * @param  string $path The path of the file you want
	 * @param  string $base The base of the url
	 * @return  string
	 */
	protected function uri($path, $base = null) {
		// Get default value
		$base = is_null($base) ? $this->base : $base;

		// Add trailing slash to $base
		if(substr($base, -1, 1) !== '/') {
			$base .= '/';
		}

		// Remoev it from $path
		if(substr($path, -1, 1) === '/') {
			$path = substr($path, 0, -1);
		}

		// Return
		return $base . $path;
	}

	/** @Given /^I am in a directory "([^"]*)"$/ */
	public function iAmInADirectory($dir)
	{
		if (!file_exists($dir)) {
			mkdir($dir);
		}
		chdir($dir);
	}

	/** @Given /^I have a file named "([^"]*)"$/ */
	public function iHaveAFileNamed($file)
	{
		touch($file);
	}

	/** @When /^I run "([^"]*)"$/ */
	public function iRun($command)
	{
		exec($command, $output);
		$this->output = trim(implode("\n", $output));
	}

	/** @Then /^I should get:$/ */
	public function iShouldGet(PyStringNode $string)
	{
		if ((string) $string !== $this->output) {
			throw new Exception(
				"Actual output is:\n" . $this->output
			);
		}
	}
}