Use PHPUnit 6.0 on PHP 7.* test lines

Author: nicolas-grekas

Tests/DeprecationErrorHandler/default.phpt

@@ -18,6 +18,19 @@ require_once __DIR__.'/../../bootstrap.php';
 
 @trigger_error('root deprecation', E_USER_DEPRECATED);
 
+eval(<<<'EOPHP'
+namespace PHPUnit\Util;
+
+class Test
+{
+    public static function getGroups()
+    {
+        return array();
+    }
+}
+EOPHP
+);
+
 class PHPUnit_Util_Test
 {
     public static function getGroups()