use namespaced PHPUnit classes

Author: xabbuh

components/var_dumper.rst

@@ -131,7 +131,9 @@ This will provide you with two new assertions:
 
 Example::
 
-    class ExampleTest extends \PHPUnit_Framework_TestCase
+    use PHPUnit\Framework\TestCase;
+
+    class ExampleTest extends TestCase
     {
         use \Symfony\Component\VarDumper\Test\VarDumperTestTrait;
 

console.rst

@@ -258,7 +258,7 @@ console::
 
     When using the Console component in a standalone project, use
     :class:`Symfony\\Component\\Console\\Application <Symfony\\Component\\Console\\Application>`
-    and extend the normal ``\PHPUnit_Framework_TestCase``.
+    and extend the normal ``\PHPUnit\Framework\TestCase``.
 
 To be able to use the fully set up service container for your console tests
 you can extend your test from

create_framework/http_foundation.rst

@@ -58,7 +58,9 @@ snippet of PHP code is not natural and feels ugly. Here is a tentative PHPUnit
 unit test for the above code::
 
     // framework/test.php
-    class IndexTest extends \PHPUnit_Framework_TestCase
+    use PHPUnit\Framework\TestCase;
+
+    class IndexTest extends TestCase
     {
         public function testHello()
         {

create_framework/unit_testing.rst

@@ -72,13 +72,14 @@ We are now ready to write our first test::
     // example.com/tests/Simplex/Tests/FrameworkTest.php
     namespace Simplex\Tests;
 
+    use PHPUnit\Framework\TestCase;
     use Simplex\Framework;
     use Symfony\Component\HttpFoundation\Request;
     use Symfony\Component\HttpKernel\Controller\ControllerResolverInterface;
     use Symfony\Component\Routing;
     use Symfony\Component\Routing\Exception\ResourceNotFoundException;
 
-    class FrameworkTest extends \PHPUnit_Framework_TestCase
+    class FrameworkTest extends TestCase
     {
         public function testNotFoundHandling()
         {

testing.rst

@@ -71,8 +71,9 @@ of your bundle::
     namespace AppBundle\Tests\Util;
 
     use AppBundle\Util\Calculator;
+    use PHPUnit\Framework\TestCase;
 
-    class CalculatorTest extends \PHPUnit_Framework_TestCase
+    class CalculatorTest extends TestCase
     {
         public function testAdd()
         {

testing/database.rst

@@ -63,8 +63,9 @@ it's easy to pass a mock object within a test::
     use AppBundle\Salary\SalaryCalculator;
     use Doctrine\ORM\EntityRepository;
     use Doctrine\Common\Persistence\ObjectManager;
+    use PHPUnit\Framework\TestCase;
 
-    class SalaryCalculatorTest extends \PHPUnit_Framework_TestCase
+    class SalaryCalculatorTest extends TestCase
     {
         public function testCalculateTotalSalary()
         {