[PHPUnit60] Skip Twig IntegrationTestCase children in AddDoesNotPerformAssertionToNonAssertingTestRector

[TomasVotruba]

\Twig\Test\IntegrationTestCase children got @doesNotPerformAssertions added, even though the parent class asserts inside doIntegrationTest().

The assert-call walker only sees the child method calling $this->doIntegrationTest(...); the assertions live deeper in the Twig parent, so the rule concluded nothing is asserted.

 use Twig\Test\IntegrationTestCase;

 final class SomeTwigExtensionTest extends IntegrationTestCase
 {
-    /**
-     * @doesNotPerformAssertions
-     */
     public function testIntegration($file, $message, $condition, $templates, $exception, $outputs)
     {
         $this->doIntegrationTest($file, $message, $condition, $templates, $exception, $outputs);
     }
 }

Now such class methods are skipped. The check uses ClassReflection::is(), so intermediate abstract test cases extending IntegrationTestCase are skipped too.