Api request response testing with behat v1

default:
    formatter:
        name: pretty
        parameters:
            output_styles:
                comment: [ magenta ]
    context:
        class: Application\BackendBundle\Features\Context\FeatureContext
        parameters:
            base_url: 'http://football.local/app_test.php/backend/'
    extensions:
        Behat\Symfony2Extension\Extension:
            mink_driver: true
            kernel:
                env: test
                debug: true
        Behat\MinkExtension\Extension:
            base_url: 'http://football.local/app_test.php/backend/'
            javascript_session: symfony2
            goutte: ~
            selenium2: ~
    paths:
        bootstrap: %behat.paths.features%/Context
        features: %behat.paths.base%/src/Application/BackendBundle/Features

Feature: Test feature

  Scenario: I can handle dynamic response content
    Given I am on "/"
    Then the response status code should be 200
    And I should see "Welcome to Application backend!"
    Then I send a "GET" request to "user"
    And the response status code should be 200
    And the response type should be "application/json"
    And the response should contain "Hello"

namespace Application\BackendBundle\Features\Context;

use Behat\MinkExtension\Context\MinkContext;
use Exception;

class FeatureContext extends MinkContext
{
    private $baseUrl;
    private $response;

    public function __construct(array $parameters)
    {
        $this->baseUrl = $parameters['base_url'];
    }

    /**
     * @When /^I send a "([^"]*)" request to "([^"]*)"$/
     *
     * @param $method
     * @param $uri
     */
    public function iSendARequestTo($method, $uri)
    {
        $client = $this->getSession()->getDriver()->getClient();
        $this->response = $client->request($method, $this->baseUrl.$uri);
    }

    /**
     * @Then /^the response type should be "([^"]*)"$/
     *
     * @param $type
     * @throws Exception
     */
    public function theResponseTypeShouldBeJson($type)
    {
        $headers = $this->getSession()->getResponseHeaders();

        if ($headers['Content-Type'][0] != $type) {
            throw new Exception('Invalid response type');
        }
    }
}