Update warn-when-opcache-enabled.phpt

Author: staabm

tests/end-to-end/phar/tests/phpt/warn-when-opcache-enabled.phpt

@@ -20,18 +20,18 @@ $_SERVER['argv'][] = '--colors=never';
 $_SERVER['argv'][] = '--coverage-text';
 $_SERVER['argv'][] = '--bootstrap';
 $_SERVER['argv'][] = __DIR__.'/../../src/autoload.php';
+$_SERVER['argv'][] = '--coverage-filter';
+$_SERVER['argv'][] = __DIR__.'/../../src/';
 $_SERVER['argv'][] = __DIR__.'/../standard/GreeterTest.php';
 
-require_once __DIR__ . '/../../../../bootstrap.php';
-
 (new PHPUnit\TextUI\Application)->run($_SERVER['argv']);
 --EXPECTF--
 PHPUnit %s by Sebastian Bergmann and contributors.
 
 Runtime: %s
 Configuration: %s
 
-WW                                                                  2 / 2 (100%)
+..                                                                  2 / 2 (100%)
 
 Time: %s, Memory: %s MB