You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: huffman.rs
    path of file: ./repos/fluke/crates/fluke-hpack/src
    
    the code of the file until where you have to start completion: //! A module exposing utilities for encoding and decoding Huffman-coded octet
//! strings, under the Huffman code defined
    
    fn test_padding_too_long() {
        let mut decoder = HuffmanDecoder::new();
        let hex_buffer = [0x3F, 0xFF];

        let result = decoder.decode(&hex_buffer);

        assert_eq!(
            HuffmanDecoderError::PaddingTooLarge,
            match result {
                Err(e) => e,
                _ => panic!("Expected `PaddingTooLarge` error"),
            }
        );
    }