lithium\net\socket\Stream::encoding PHP Method

    public function encoding($charset)
    {
        if (!function_exists('stream_encoding')) {
            return false;
        }
        return is_resource($this->_resource) ? stream_encoding($this->_resource, $charset) : false;
    }

 public function testEncoding()
 {
     $stream = new Stream($this->_testConfig);
     $result = $stream->open();
     $stream->encoding('UTF-8');
     $result = $stream->resource();
     $this->assertTrue(is_resource($result));
     $stream = new Stream($this->_testConfig + array('encoding' => 'UTF-8'));
     $result = $stream->open();
     $result = $stream->resource();
     $this->assertTrue(is_resource($result));
 }