public function testReplace()
 {
     $builder = new \Gherkins\RegExpBuilderPHP\RegExpBuilder();
     $regExp = $builder->min(1)->max(10)->digits()->getRegExp();
     $text = "98 bottles of beer on the wall";
     $text = $regExp->replace($text, function ($match) {
         return (int) $match + 1;
     });
     $this->assertTrue("99 bottles of beer on the wall" === $text);
 }