public function test_elseforeach()
    {
        $data = ['k1' => 'v1', 'k2' => 'v2'];
        $this->assertEquals('no rows', self::_tpl('{foreach(data)} {_key}={_val} {elseforeach}no rows{/foreach}', []));
        $this->assertEquals(' k1=v1  k2=v2 ', self::_tpl('{foreach(data)} {_key}={_val} {elseforeach}no rows{/foreach}', ['data' => $data]));