iLoginAs Behat 2 method

behat-iloginas.php

<?php
/**
 * Allows your feature to login as the specified user without specifying a password
 */

/**
 * @Given /^I log in as "(?P<name>[^"]*)"$/
 */
public function iLogInAs($name) {

  $base_url = rtrim($this->locatePath('/'), '/');

  $login_link = $this->getMainContext()->getDriver('drush')->drush('uli', array(
      "'${name}'",
      '--browser=0',
      "--uri=${base_url}",
    ));

  // Trim EOL characters. Required or else visiting the link won't work.
  $login_link = trim($login_link);
  $this->getSession()->visit($this->locatePath($login_link));

  if (!$this->loggedIn()) {

    throw new \Exception('Unable to login as user ' . $name);
  }

  $user_info = $this->getDriver('drush')->drush('user-information', array(
      "'${name}'",
      '--pipe',
    ));

  list(, $uid) = explode(',', $user_info, 5);
  if (empty($uid)) {

    throw new \Exception('Unable to get user ID for ' . $name);
  }

  $user = user_load($uid);
  if (empty($user->uid)) {

    throw new \Exception('Unable to load user ' . $uid);
  }

  $this->user = $user;
}