behat.yml

default:
  suites:
    default:
      contexts:
        - FeatureContext
        - Drupal\DrupalExtension\Context\DrupalContext
        - Drupal\DrupalExtension\Context\MinkContext
        - Drupal\DrupalExtension\Context\MessageContext
        - Drupal\DrupalExtension\Context\DrushContext
  extensions:
    Behat\MinkExtension:
      goutte: ~
      selenium2: ~
      base_url: http://newhabi.biz
#      wd_host: http://newhabit.biz:4444
#      capabilities: {"browser": "firefox"}
    Drupal\DrupalExtension:
      blackbox: ~
      api_driver: 'drush'
      drush: 
        alias: 'newhabi.biz'
      region_map:
        region: '#footer'

drush_driver.feature

@api
Feature: Drush driver
  In order to show functionality added by the Drush driver 
  As a trainer
  I need to use the step definitions it supports

  Scenario: Drush alias
    Given I am logged in as a user with the "authenticated user" role
    When I click "My account"
    Then I should see the heading "History"

  Scenario: Target links within table rows
    Given I am logged in as a user with the "administrator" role
    When I am at "admin/structure/types"
    And I click "manage fields" in the "Article" row
    Then I should be on "admin/structure/types/manage/article/fields"
    And I should see text matching "Add new field"

  Scenario: Clear cache
    Given the cache has been cleared
    When I am on the homepage
    Then I should get a "200" HTTP response

  Scenario: Create and log in as a user
    Given I am logged in as a user with the "authenticated user" role
    When I click "My account"
    Then I should see the heading "History"

  Scenario: Target links within table rows
    Given I am logged in as a user with the "administrator" role
    When I am at "admin/structure/types"
    And I click "manage fields" in the "Article" row
    Then I should be on "admin/structure/types/manage/article/fields"
    And I should see text matching "Add new field"

FeatureContext.php

<?php

use Drupal\DrupalExtension\Context\RawDrupalContext;
use Behat\Behat\Context\SnippetAcceptingContext;
use Behat\Gherkin\Node\PyStringNode;
use Behat\Gherkin\Node\TableNode;
use Behat\Behat\Tester\Exception\PendingException;

/**
 * Defines application features from the specific context.
 */
class FeatureContext extends RawDrupalContext implements SnippetAcceptingContext {

  /**
   * Initializes context.
   *
   * Every scenario gets its own context instance.
   * You can also pass arbitrary arguments to the
   * context constructor through behat.yml.
   */
  public function __construct() {
  }

  /**
   * @Given I am loggin in as a user with the :arg1 role
   */
  public function iAmLogginInAsAUserWithTheRole($arg1)
  {
      throw new PendingException();
  }

  /**
   * @Then I should see text :arg1
   */
  public function iShouldSeeText($arg1)
  {
      throw new PendingException();}

}