function testDumpLoad()
{
$m = ['d' => '[1-9][0-9]*', 'sp' => '\\s+', '+', '-', '*', '/', '(', ')'];
$lexer = new Lexer($m);
$d = $lexer->dump();
$lexer = new Lexer();
$lexer->load($d);
$str = '(123+44)';
$tokens = $lexer->getAllTokens($str);
$this->assertCount(5, $tokens);
}