Uses PHPUnit 4+

Author: sroze

tests/Custom/BaseUrlTest.php

@@ -5,12 +5,13 @@
 use Behat\Mink\Driver\BrowserKitDriver;
 use Behat\Mink\Session;
 use Behat\Mink\Tests\Driver\Util\FixturesKernel;
+use PHPUnit\Framework\TestCase;
 use Symfony\Component\HttpKernel\Client;
 
 /**
  * @group functional
  */
-class BaseUrlTest extends \PHPUnit_Framework_TestCase
+class BaseUrlTest extends TestCase
 {
     public function testBaseUrl()
     {

tests/Custom/ErrorHandlingTest.php

@@ -3,10 +3,11 @@
 namespace Behat\Mink\Tests\Driver\Custom;
 
 use Behat\Mink\Driver\BrowserKitDriver;
+use PHPUnit\Framework\TestCase;
 use Symfony\Component\BrowserKit\Client;
 use Symfony\Component\BrowserKit\Response;
 
-class ErrorHandlingTest extends \PHPUnit_Framework_TestCase
+class ErrorHandlingTest extends TestCase
 {
     /**
      * @var TestClient