public function test_execute()
{
// $parser = (new ParserFactory())->create(ParserFactory::PREFER_PHP7);
$parser = new Parser(new Lexer());
$printer = new Standard();
$visitor = new WhitelistVisitor();
$sandbox = new Sandbox($visitor, $parser, $printer);
$code = '
$a = 1+1;
return $a;
';
$res = $sandbox->execute($code);
$this->assertEquals(2, $res);
}
