ggstd 0.1.0

// Copyright 2023 The rust-ggstd authors. All rights reserved.
// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

use super::huffman_bit_writer::HuffmanBitWriter;
use super::token::Token;
use crate::bytes;

const TESTDATA_FOLDER: &str = "src/compress/flate/testdata";

/// TestBlockHuff tests huffman encoding against reference files
/// to detect possible regressions.
#[test]
fn test_block_huff() {
    for entry in std::fs::read_dir(TESTDATA_FOLDER).unwrap() {
        let entry = entry.unwrap();
        if entry.path().is_file() {
            let path = entry.path().to_string_lossy().to_string();
            let filename = entry.file_name().to_string_lossy().to_string();
            if filename.starts_with("huffman-") && filename.ends_with(".in") {
                println!("testing {}", filename);
                let out = path.replace(".in", ".golden");
                block_huff(&path, &out);
            }
        }
    }
}

fn block_huff(input: &String, out: &String) {
    let all = std::fs::read(input).unwrap();

    let want = std::fs::read(out).unwrap();
    {
        let mut buf = bytes::Buffer::new();
        let mut bw = HuffmanBitWriter::new(&mut buf);

        bw.write_block_huff(false, &all);
        bw.flush();
        let got = buf.bytes();

        assert_eq!(want.len(), got.len());
        assert_eq!(want, got);
    }

    // Test if the writer produces the same output after reset.
    {
        let mut buf = bytes::Buffer::new();
        let mut bw = HuffmanBitWriter::new(&mut buf);

        bw.write_block_huff(false, &all);
        bw.flush();

        let mut buf2 = bytes::Buffer::new();
        bw.reset(&mut buf2);

        bw.write_block_huff(false, &all);
        bw.flush();
        let got = buf2.bytes();

        assert_eq!(want.len(), got.len());
        assert_eq!(want, got);
    }

    test_writer_eof(
        "huff",
        &HuffTest {
            input: Some(input),
            tokens: None,
            want: None,
            want_no_input: None,
        },
        true,
    );
}

struct HuffTest<'a> {
    tokens: Option<&'a [Token]>,
    input: Option<&'a str>, // File name of input data matching the tokens.
    want: Option<&'a str>,  // File name of data with the expected output with input available.
    want_no_input: Option<&'a str>, // File name of the expected output when no input is available.
}

const ML: Token = 0x7fc00000; // Maximum length token. Used to reduce the size of WRITE_BLOCK_TESTS

const WRITE_BLOCK_TESTS: &[HuffTest] = &[
    HuffTest {
        input: Some("testdata/huffman-null-max.in"),
        want: Some("testdata/huffman-null-max.%s.expect"),
        want_no_input: Some("testdata/huffman-null-max.%s.expect-noinput"),
        tokens: Some(&[
            0x0, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, 0x0, 0x0,
        ]),
    },
    HuffTest {
        input: Some("testdata/huffman-pi.in"),
        want: Some("testdata/huffman-pi.%s.expect"),
        want_no_input: Some("testdata/huffman-pi.%s.expect-noinput"),
        tokens: Some(&[
            0x33, 0x2e, 0x31, 0x34, 0x31, 0x35, 0x39, 0x32, 0x36, 0x35, 0x33, 0x35, 0x38, 0x39,
            0x37, 0x39, 0x33, 0x32, 0x33, 0x38, 0x34, 0x36, 0x32, 0x36, 0x34, 0x33, 0x33, 0x38,
            0x33, 0x32, 0x37, 0x39, 0x35, 0x30, 0x32, 0x38, 0x38, 0x34, 0x31, 0x39, 0x37, 0x31,
            0x36, 0x39, 0x33, 0x39, 0x39, 0x33, 0x37, 0x35, 0x31, 0x30, 0x35, 0x38, 0x32, 0x30,
            0x39, 0x37, 0x34, 0x39, 0x34, 0x34, 0x35, 0x39, 0x32, 0x33, 0x30, 0x37, 0x38, 0x31,
            0x36, 0x34, 0x30, 0x36, 0x32, 0x38, 0x36, 0x32, 0x30, 0x38, 0x39, 0x39, 0x38, 0x36,
            0x32, 0x38, 0x30, 0x33, 0x34, 0x38, 0x32, 0x35, 0x33, 0x34, 0x32, 0x31, 0x31, 0x37,
            0x30, 0x36, 0x37, 0x39, 0x38, 0x32, 0x31, 0x34, 0x38, 0x30, 0x38, 0x36, 0x35, 0x31,
            0x33, 0x32, 0x38, 0x32, 0x33, 0x30, 0x36, 0x36, 0x34, 0x37, 0x30, 0x39, 0x33, 0x38,
            0x34, 0x34, 0x36, 0x30, 0x39, 0x35, 0x35, 0x30, 0x35, 0x38, 0x32, 0x32, 0x33, 0x31,
            0x37, 0x32, 0x35, 0x33, 0x35, 0x39, 0x34, 0x30, 0x38, 0x31, 0x32, 0x38, 0x34, 0x38,
            0x31, 0x31, 0x31, 0x37, 0x34, 0x4040007e, 0x34, 0x31, 0x30, 0x32, 0x37, 0x30, 0x31,
            0x39, 0x33, 0x38, 0x35, 0x32, 0x31, 0x31, 0x30, 0x35, 0x35, 0x35, 0x39, 0x36, 0x34,
            0x34, 0x36, 0x32, 0x32, 0x39, 0x34, 0x38, 0x39, 0x35, 0x34, 0x39, 0x33, 0x30, 0x33,
            0x38, 0x31, 0x40400012, 0x32, 0x38, 0x38, 0x31, 0x30, 0x39, 0x37, 0x35, 0x36, 0x36,
            0x35, 0x39, 0x33, 0x33, 0x34, 0x34, 0x36, 0x40400047, 0x37, 0x35, 0x36, 0x34, 0x38,
            0x32, 0x33, 0x33, 0x37, 0x38, 0x36, 0x37, 0x38, 0x33, 0x31, 0x36, 0x35, 0x32, 0x37,
            0x31, 0x32, 0x30, 0x31, 0x39, 0x30, 0x39, 0x31, 0x34, 0x4040001a, 0x35, 0x36, 0x36,
            0x39, 0x32, 0x33, 0x34, 0x36, 0x404000b2, 0x36, 0x31, 0x30, 0x34, 0x35, 0x34, 0x33,
            0x32, 0x36, 0x40400032, 0x31, 0x33, 0x33, 0x39, 0x33, 0x36, 0x30, 0x37, 0x32, 0x36,
            0x30, 0x32, 0x34, 0x39, 0x31, 0x34, 0x31, 0x32, 0x37, 0x33, 0x37, 0x32, 0x34, 0x35,
            0x38, 0x37, 0x30, 0x30, 0x36, 0x36, 0x30, 0x36, 0x33, 0x31, 0x35, 0x35, 0x38, 0x38,
            0x31, 0x37, 0x34, 0x38, 0x38, 0x31, 0x35, 0x32, 0x30, 0x39, 0x32, 0x30, 0x39, 0x36,
            0x32, 0x38, 0x32, 0x39, 0x32, 0x35, 0x34, 0x30, 0x39, 0x31, 0x37, 0x31, 0x35, 0x33,
            0x36, 0x34, 0x33, 0x36, 0x37, 0x38, 0x39, 0x32, 0x35, 0x39, 0x30, 0x33, 0x36, 0x30,
            0x30, 0x31, 0x31, 0x33, 0x33, 0x30, 0x35, 0x33, 0x30, 0x35, 0x34, 0x38, 0x38, 0x32,
            0x30, 0x34, 0x36, 0x36, 0x35, 0x32, 0x31, 0x33, 0x38, 0x34, 0x31, 0x34, 0x36, 0x39,
            0x35, 0x31, 0x39, 0x34, 0x31, 0x35, 0x31, 0x31, 0x36, 0x30, 0x39, 0x34, 0x33, 0x33,
            0x30, 0x35, 0x37, 0x32, 0x37, 0x30, 0x33, 0x36, 0x35, 0x37, 0x35, 0x39, 0x35, 0x39,
            0x31, 0x39, 0x35, 0x33, 0x30, 0x39, 0x32, 0x31, 0x38, 0x36, 0x31, 0x31, 0x37,
            0x404000e9, 0x33, 0x32, 0x40400009, 0x39, 0x33, 0x31, 0x30, 0x35, 0x31, 0x31, 0x38,
            0x35, 0x34, 0x38, 0x30, 0x37, 0x4040010e, 0x33, 0x37, 0x39, 0x39, 0x36, 0x32, 0x37,
            0x34, 0x39, 0x35, 0x36, 0x37, 0x33, 0x35, 0x31, 0x38, 0x38, 0x35, 0x37, 0x35, 0x32,
            0x37, 0x32, 0x34, 0x38, 0x39, 0x31, 0x32, 0x32, 0x37, 0x39, 0x33, 0x38, 0x31, 0x38,
            0x33, 0x30, 0x31, 0x31, 0x39, 0x34, 0x39, 0x31, 0x32, 0x39, 0x38, 0x33, 0x33, 0x36,
            0x37, 0x33, 0x33, 0x36, 0x32, 0x34, 0x34, 0x30, 0x36, 0x35, 0x36, 0x36, 0x34, 0x33,
            0x30, 0x38, 0x36, 0x30, 0x32, 0x31, 0x33, 0x39, 0x34, 0x39, 0x34, 0x36, 0x33, 0x39,
            0x35, 0x32, 0x32, 0x34, 0x37, 0x33, 0x37, 0x31, 0x39, 0x30, 0x37, 0x30, 0x32, 0x31,
            0x37, 0x39, 0x38, 0x40800099, 0x37, 0x30, 0x32, 0x37, 0x37, 0x30, 0x35, 0x33, 0x39,
            0x32, 0x31, 0x37, 0x31, 0x37, 0x36, 0x32, 0x39, 0x33, 0x31, 0x37, 0x36, 0x37, 0x35,
            0x40800232, 0x37, 0x34, 0x38, 0x31, 0x40400006, 0x36, 0x36, 0x39, 0x34, 0x30,
            0x404001e7, 0x30, 0x30, 0x30, 0x35, 0x36, 0x38, 0x31, 0x32, 0x37, 0x31, 0x34, 0x35,
            0x32, 0x36, 0x33, 0x35, 0x36, 0x30, 0x38, 0x32, 0x37, 0x37, 0x38, 0x35, 0x37, 0x37,
            0x31, 0x33, 0x34, 0x32, 0x37, 0x35, 0x37, 0x37, 0x38, 0x39, 0x36, 0x40400129, 0x33,
            0x36, 0x33, 0x37, 0x31, 0x37, 0x38, 0x37, 0x32, 0x31, 0x34, 0x36, 0x38, 0x34, 0x34,
            0x30, 0x39, 0x30, 0x31, 0x32, 0x32, 0x34, 0x39, 0x35, 0x33, 0x34, 0x33, 0x30, 0x31,
            0x34, 0x36, 0x35, 0x34, 0x39, 0x35, 0x38, 0x35, 0x33, 0x37, 0x31, 0x30, 0x35, 0x30,
            0x37, 0x39, 0x404000ca, 0x36, 0x40400153, 0x38, 0x39, 0x32, 0x33, 0x35, 0x34,
            0x404001c9, 0x39, 0x35, 0x36, 0x31, 0x31, 0x32, 0x31, 0x32, 0x39, 0x30, 0x32, 0x31,
            0x39, 0x36, 0x30, 0x38, 0x36, 0x34, 0x30, 0x33, 0x34, 0x34, 0x31, 0x38, 0x31, 0x35,
            0x39, 0x38, 0x31, 0x33, 0x36, 0x32, 0x39, 0x37, 0x37, 0x34, 0x40400074, 0x30, 0x39,
            0x39, 0x36, 0x30, 0x35, 0x31, 0x38, 0x37, 0x30, 0x37, 0x32, 0x31, 0x31, 0x33, 0x34,
            0x39, 0x40800000, 0x38, 0x33, 0x37, 0x32, 0x39, 0x37, 0x38, 0x30, 0x34, 0x39, 0x39,
            0x404002da, 0x39, 0x37, 0x33, 0x31, 0x37, 0x33, 0x32, 0x38, 0x4040018a, 0x36, 0x33,
            0x31, 0x38, 0x35, 0x40400301, 0x404002e8, 0x34, 0x35, 0x35, 0x33, 0x34, 0x36, 0x39,
            0x30, 0x38, 0x33, 0x30, 0x32, 0x36, 0x34, 0x32, 0x35, 0x32, 0x32, 0x33, 0x30,
            0x404002e3, 0x40400267, 0x38, 0x35, 0x30, 0x33, 0x35, 0x32, 0x36, 0x31, 0x39, 0x33,
            0x31, 0x31, 0x40400212, 0x31, 0x30, 0x31, 0x30, 0x30, 0x30, 0x33, 0x31, 0x33, 0x37,
            0x38, 0x33, 0x38, 0x37, 0x35, 0x32, 0x38, 0x38, 0x36, 0x35, 0x38, 0x37, 0x35, 0x33,
            0x33, 0x32, 0x30, 0x38, 0x33, 0x38, 0x31, 0x34, 0x32, 0x30, 0x36, 0x40400140,
            0x4040012b, 0x31, 0x34, 0x37, 0x33, 0x30, 0x33, 0x35, 0x39, 0x4080032e, 0x39, 0x30,
            0x34, 0x32, 0x38, 0x37, 0x35, 0x35, 0x34, 0x36, 0x38, 0x37, 0x33, 0x31, 0x31, 0x35,
            0x39, 0x35, 0x40400355, 0x33, 0x38, 0x38, 0x32, 0x33, 0x35, 0x33, 0x37, 0x38, 0x37,
            0x35, 0x4080037f, 0x39, 0x4040013a, 0x31, 0x40400148, 0x38, 0x30, 0x35, 0x33,
            0x4040018a, 0x32, 0x32, 0x36, 0x38, 0x30, 0x36, 0x36, 0x31, 0x33, 0x30, 0x30, 0x31,
            0x39, 0x32, 0x37, 0x38, 0x37, 0x36, 0x36, 0x31, 0x31, 0x31, 0x39, 0x35, 0x39,
            0x40400237, 0x36, 0x40800124, 0x38, 0x39, 0x33, 0x38, 0x30, 0x39, 0x35, 0x32, 0x35,
            0x37, 0x32, 0x30, 0x31, 0x30, 0x36, 0x35, 0x34, 0x38, 0x35, 0x38, 0x36, 0x33, 0x32,
            0x37, 0x4040009a, 0x39, 0x33, 0x36, 0x31, 0x35, 0x33, 0x40400220, 0x4080015c, 0x32,
            0x33, 0x30, 0x33, 0x30, 0x31, 0x39, 0x35, 0x32, 0x30, 0x33, 0x35, 0x33, 0x30, 0x31,
            0x38, 0x35, 0x32, 0x40400171, 0x40400075, 0x33, 0x36, 0x32, 0x32, 0x35, 0x39, 0x39,
            0x34, 0x31, 0x33, 0x40400254, 0x34, 0x39, 0x37, 0x32, 0x31, 0x37, 0x404000de, 0x33,
            0x34, 0x37, 0x39, 0x31, 0x33, 0x31, 0x35, 0x31, 0x35, 0x35, 0x37, 0x34, 0x38, 0x35,
            0x37, 0x32, 0x34, 0x32, 0x34, 0x35, 0x34, 0x31, 0x35, 0x30, 0x36, 0x39, 0x4040013f,
            0x38, 0x32, 0x39, 0x35, 0x33, 0x33, 0x31, 0x31, 0x36, 0x38, 0x36, 0x31, 0x37, 0x32,
            0x37, 0x38, 0x40400337, 0x39, 0x30, 0x37, 0x35, 0x30, 0x39, 0x4040010d, 0x37, 0x35,
            0x34, 0x36, 0x33, 0x37, 0x34, 0x36, 0x34, 0x39, 0x33, 0x39, 0x33, 0x31, 0x39, 0x32,
            0x35, 0x35, 0x30, 0x36, 0x30, 0x34, 0x30, 0x30, 0x39, 0x4040026b, 0x31, 0x36, 0x37,
            0x31, 0x31, 0x33, 0x39, 0x30, 0x30, 0x39, 0x38, 0x40400335, 0x34, 0x30, 0x31, 0x32,
            0x38, 0x35, 0x38, 0x33, 0x36, 0x31, 0x36, 0x30, 0x33, 0x35, 0x36, 0x33, 0x37, 0x30,
            0x37, 0x36, 0x36, 0x30, 0x31, 0x30, 0x34, 0x40400172, 0x38, 0x31, 0x39, 0x34, 0x32,
            0x39, 0x4080041e, 0x404000ef, 0x4040028b, 0x37, 0x38, 0x33, 0x37, 0x34, 0x404004a8,
            0x38, 0x32, 0x35, 0x35, 0x33, 0x37, 0x40800209, 0x32, 0x36, 0x38, 0x4040002e, 0x34,
            0x30, 0x34, 0x37, 0x404001d1, 0x34, 0x404004b5, 0x4040038d, 0x38, 0x34, 0x404003a8,
            0x36, 0x40c0031f, 0x33, 0x33, 0x31, 0x33, 0x36, 0x37, 0x37, 0x30, 0x32, 0x38, 0x39,
            0x38, 0x39, 0x31, 0x35, 0x32, 0x40400062, 0x35, 0x32, 0x31, 0x36, 0x32, 0x30, 0x35,
            0x36, 0x39, 0x36, 0x40400411, 0x30, 0x35, 0x38, 0x40400477, 0x35, 0x40400498, 0x35,
            0x31, 0x31, 0x40400209, 0x38, 0x32, 0x34, 0x33, 0x30, 0x30, 0x33, 0x35, 0x35, 0x38,
            0x37, 0x36, 0x34, 0x30, 0x32, 0x34, 0x37, 0x34, 0x39, 0x36, 0x34, 0x37, 0x33, 0x32,
            0x36, 0x33, 0x4040043e, 0x39, 0x39, 0x32, 0x4040044b, 0x34, 0x32, 0x36, 0x39,
            0x40c002c5, 0x37, 0x404001d6, 0x34, 0x4040053d, 0x4040041d, 0x39, 0x33, 0x34, 0x31,
            0x37, 0x404001ad, 0x31, 0x32, 0x4040002a, 0x34, 0x4040019e, 0x31, 0x35, 0x30, 0x33,
            0x30, 0x32, 0x38, 0x36, 0x31, 0x38, 0x32, 0x39, 0x37, 0x34, 0x35, 0x35, 0x35, 0x37,
            0x30, 0x36, 0x37, 0x34, 0x40400135, 0x35, 0x30, 0x35, 0x34, 0x39, 0x34, 0x35, 0x38,
            0x404001c5, 0x39, 0x40400051, 0x35, 0x36, 0x404001ec, 0x37, 0x32, 0x31, 0x30, 0x37,
            0x39, 0x40400159, 0x33, 0x30, 0x4040010a, 0x33, 0x32, 0x31, 0x31, 0x36, 0x35, 0x33,
            0x34, 0x34, 0x39, 0x38, 0x37, 0x32, 0x30, 0x32, 0x37, 0x4040011b, 0x30, 0x32, 0x33,
            0x36, 0x34, 0x4040022e, 0x35, 0x34, 0x39, 0x39, 0x31, 0x31, 0x39, 0x38, 0x40400418,
            0x34, 0x4040011b, 0x35, 0x33, 0x35, 0x36, 0x36, 0x33, 0x36, 0x39, 0x40400450, 0x32,
            0x36, 0x35, 0x404002e4, 0x37, 0x38, 0x36, 0x32, 0x35, 0x35, 0x31, 0x404003da, 0x31,
            0x37, 0x35, 0x37, 0x34, 0x36, 0x37, 0x32, 0x38, 0x39, 0x30, 0x39, 0x37, 0x37, 0x37,
            0x37, 0x40800453, 0x30, 0x30, 0x30, 0x404005fd, 0x37, 0x30, 0x404004df, 0x36,
            0x404003e9, 0x34, 0x39, 0x31, 0x4040041e, 0x40400297, 0x32, 0x31, 0x34, 0x37, 0x37,
            0x32, 0x33, 0x35, 0x30, 0x31, 0x34, 0x31, 0x34, 0x40400643, 0x33, 0x35, 0x36,
            0x404004af, 0x31, 0x36, 0x31, 0x33, 0x36, 0x31, 0x31, 0x35, 0x37, 0x33, 0x35, 0x32,
            0x35, 0x40400504, 0x33, 0x34, 0x4040005b, 0x31, 0x38, 0x4040047b, 0x38, 0x34,
            0x404005e7, 0x33, 0x33, 0x32, 0x33, 0x39, 0x30, 0x37, 0x33, 0x39, 0x34, 0x31, 0x34,
            0x33, 0x33, 0x33, 0x34, 0x35, 0x34, 0x37, 0x37, 0x36, 0x32, 0x34, 0x40400242, 0x32,
            0x35, 0x31, 0x38, 0x39, 0x38, 0x33, 0x35, 0x36, 0x39, 0x34, 0x38, 0x35, 0x35, 0x36,
            0x32, 0x30, 0x39, 0x39, 0x32, 0x31, 0x39, 0x32, 0x32, 0x32, 0x31, 0x38, 0x34, 0x32,
            0x37, 0x4040023e, 0x32, 0x404000ba, 0x36, 0x38, 0x38, 0x37, 0x36, 0x37, 0x31, 0x37,
            0x39, 0x30, 0x40400055, 0x30, 0x40800106, 0x36, 0x36, 0x404003e7, 0x38, 0x38, 0x36,
            0x32, 0x37, 0x32, 0x404006dc, 0x31, 0x37, 0x38, 0x36, 0x30, 0x38, 0x35, 0x37,
            0x40400073, 0x33, 0x408002fc, 0x37, 0x39, 0x37, 0x36, 0x36, 0x38, 0x31, 0x404002bd,
            0x30, 0x30, 0x39, 0x35, 0x33, 0x38, 0x38, 0x40400638, 0x33, 0x404006a5, 0x30, 0x36,
            0x38, 0x30, 0x30, 0x36, 0x34, 0x32, 0x32, 0x35, 0x31, 0x32, 0x35, 0x32, 0x4040057b,
            0x37, 0x33, 0x39, 0x32, 0x40400297, 0x40400474, 0x34, 0x408006b3, 0x38, 0x36, 0x32,
            0x36, 0x39, 0x34, 0x35, 0x404001e5, 0x34, 0x31, 0x39, 0x36, 0x35, 0x32, 0x38, 0x35,
            0x30, 0x40400099, 0x4040039c, 0x31, 0x38, 0x36, 0x33, 0x404001be, 0x34, 0x40800154,
            0x32, 0x30, 0x33, 0x39, 0x4040058b, 0x34, 0x35, 0x404002bc, 0x32, 0x33, 0x37,
            0x4040042c, 0x36, 0x40400510, 0x35, 0x36, 0x40400638, 0x37, 0x31, 0x39, 0x31, 0x37,
            0x32, 0x38, 0x40400171, 0x37, 0x36, 0x34, 0x36, 0x35, 0x37, 0x35, 0x37, 0x33, 0x39,
            0x40400101, 0x33, 0x38, 0x39, 0x40400748, 0x38, 0x33, 0x32, 0x36, 0x34, 0x35, 0x39,
            0x39, 0x35, 0x38, 0x404006a7, 0x30, 0x34, 0x37, 0x38, 0x404001de, 0x40400328, 0x39,
            0x4040002d, 0x36, 0x34, 0x30, 0x37, 0x38, 0x39, 0x35, 0x31, 0x4040008e, 0x36, 0x38,
            0x33, 0x4040012f, 0x32, 0x35, 0x39, 0x35, 0x37, 0x30, 0x40400468, 0x38, 0x32, 0x32,
            0x404002c8, 0x32, 0x4040061b, 0x34, 0x30, 0x37, 0x37, 0x32, 0x36, 0x37, 0x31, 0x39,
            0x34, 0x37, 0x38, 0x40400319, 0x38, 0x32, 0x36, 0x30, 0x31, 0x34, 0x37, 0x36, 0x39,
            0x39, 0x30, 0x39, 0x404004e8, 0x30, 0x31, 0x33, 0x36, 0x33, 0x39, 0x34, 0x34, 0x33,
            0x4040027f, 0x33, 0x30, 0x40400105, 0x32, 0x30, 0x33, 0x34, 0x39, 0x36, 0x32, 0x35,
            0x32, 0x34, 0x35, 0x31, 0x37, 0x404003b5, 0x39, 0x36, 0x35, 0x31, 0x34, 0x33, 0x31,
            0x34, 0x32, 0x39, 0x38, 0x30, 0x39, 0x31, 0x39, 0x30, 0x36, 0x35, 0x39, 0x32,
            0x40400282, 0x37, 0x32, 0x32, 0x31, 0x36, 0x39, 0x36, 0x34, 0x36, 0x40400419,
            0x4040007a, 0x35, 0x4040050e, 0x34, 0x40800565, 0x38, 0x40400559, 0x39, 0x37,
            0x4040057b, 0x35, 0x34, 0x4040049d, 0x4040023e, 0x37, 0x4040065a, 0x38, 0x34, 0x36,
            0x38, 0x31, 0x33, 0x4040008c, 0x36, 0x38, 0x33, 0x38, 0x36, 0x38, 0x39, 0x34, 0x32,
            0x37, 0x37, 0x34, 0x31, 0x35, 0x35, 0x39, 0x39, 0x31, 0x38, 0x35, 0x4040005a, 0x32,
            0x34, 0x35, 0x39, 0x35, 0x33, 0x39, 0x35, 0x39, 0x34, 0x33, 0x31, 0x404005b7, 0x37,
            0x40400012, 0x36, 0x38, 0x30, 0x38, 0x34, 0x35, 0x404002e7, 0x37, 0x33, 0x4040081e,
            0x39, 0x35, 0x38, 0x34, 0x38, 0x36, 0x35, 0x33, 0x38, 0x404006e8, 0x36, 0x32,
            0x404000f2, 0x36, 0x30, 0x39, 0x404004b6, 0x36, 0x30, 0x38, 0x30, 0x35, 0x31, 0x32,
            0x34, 0x33, 0x38, 0x38, 0x34, 0x4040013a, 0x4040000b, 0x34, 0x31, 0x33, 0x4040030f,
            0x37, 0x36, 0x32, 0x37, 0x38, 0x40400341, 0x37, 0x31, 0x35, 0x4040059b, 0x33, 0x35,
            0x39, 0x39, 0x37, 0x37, 0x30, 0x30, 0x31, 0x32, 0x39, 0x40400472, 0x38, 0x39, 0x34,
            0x34, 0x31, 0x40400277, 0x36, 0x38, 0x35, 0x35, 0x4040005f, 0x34, 0x30, 0x36, 0x33,
            0x404008e6, 0x32, 0x30, 0x37, 0x32, 0x32, 0x40400158, 0x40800203, 0x34, 0x38, 0x31,
            0x35, 0x38, 0x40400205, 0x404001fe, 0x4040027a, 0x40400298, 0x33, 0x39, 0x34, 0x35,
            0x32, 0x32, 0x36, 0x37, 0x40c00496, 0x38, 0x4040058a, 0x32, 0x31, 0x404002ea, 0x32,
            0x40400387, 0x35, 0x34, 0x36, 0x36, 0x36, 0x4040051b, 0x32, 0x33, 0x39, 0x38, 0x36,
            0x34, 0x35, 0x36, 0x404004c4, 0x31, 0x36, 0x33, 0x35, 0x40800253, 0x40400811, 0x37,
            0x404008ad, 0x39, 0x38, 0x4040045e, 0x39, 0x33, 0x36, 0x33, 0x34, 0x4040075b, 0x37,
            0x34, 0x33, 0x32, 0x34, 0x4040047b, 0x31, 0x35, 0x30, 0x37, 0x36, 0x404004bb, 0x37,
            0x39, 0x34, 0x35, 0x31, 0x30, 0x39, 0x4040003e, 0x30, 0x39, 0x34, 0x30, 0x404006a6,
            0x38, 0x38, 0x37, 0x39, 0x37, 0x31, 0x30, 0x38, 0x39, 0x33, 0x404008f0, 0x36, 0x39,
            0x31, 0x33, 0x36, 0x38, 0x36, 0x37, 0x32, 0x4040025b, 0x404001fe, 0x35, 0x4040053f,
            0x40400468, 0x40400801, 0x31, 0x37, 0x39, 0x32, 0x38, 0x36, 0x38, 0x404008cc, 0x38,
            0x37, 0x34, 0x37, 0x4080079e, 0x38, 0x32, 0x34, 0x4040097a, 0x38, 0x4040025b, 0x37,
            0x31, 0x34, 0x39, 0x30, 0x39, 0x36, 0x37, 0x35, 0x39, 0x38, 0x404006ef, 0x33, 0x36,
            0x35, 0x40400134, 0x38, 0x31, 0x4040005c, 0x40400745, 0x40400936, 0x36, 0x38, 0x32,
            0x39, 0x4040057e, 0x38, 0x37, 0x32, 0x32, 0x36, 0x35, 0x38, 0x38, 0x30, 0x40400611,
            0x35, 0x40400249, 0x34, 0x32, 0x37, 0x30, 0x34, 0x37, 0x37, 0x35, 0x35, 0x4040081e,
            0x33, 0x37, 0x39, 0x36, 0x34, 0x31, 0x34, 0x35, 0x31, 0x35, 0x32, 0x404005fd, 0x32,
            0x33, 0x34, 0x33, 0x36, 0x34, 0x35, 0x34, 0x404005de, 0x34, 0x34, 0x34, 0x37, 0x39,
            0x35, 0x4040003c, 0x40400523, 0x408008e6, 0x34, 0x31, 0x4040052a, 0x33, 0x40400304,
            0x35, 0x32, 0x33, 0x31, 0x40800841, 0x31, 0x36, 0x36, 0x31, 0x404008b2, 0x35, 0x39,
            0x36, 0x39, 0x35, 0x33, 0x36, 0x32, 0x33, 0x31, 0x34, 0x404005ff, 0x32, 0x34, 0x38,
            0x34, 0x39, 0x33, 0x37, 0x31, 0x38, 0x37, 0x31, 0x31, 0x30, 0x31, 0x34, 0x35, 0x37,
            0x36, 0x35, 0x34, 0x40400761, 0x30, 0x32, 0x37, 0x39, 0x39, 0x33, 0x34, 0x34, 0x30,
            0x33, 0x37, 0x34, 0x32, 0x30, 0x30, 0x37, 0x4040093f, 0x37, 0x38, 0x35, 0x33, 0x39,
            0x30, 0x36, 0x32, 0x31, 0x39, 0x40800299, 0x40400345, 0x38, 0x34, 0x37, 0x408003d2,
            0x38, 0x33, 0x33, 0x32, 0x31, 0x34, 0x34, 0x35, 0x37, 0x31, 0x40400284, 0x40400776,
            0x34, 0x33, 0x35, 0x30, 0x40400928, 0x40400468, 0x35, 0x33, 0x31, 0x39, 0x31, 0x30,
            0x34, 0x38, 0x34, 0x38, 0x31, 0x30, 0x30, 0x35, 0x33, 0x37, 0x30, 0x36, 0x404008bc,
            0x4080059d, 0x40800781, 0x31, 0x40400559, 0x37, 0x4040031b, 0x35, 0x404007ec,
            0x4040040c, 0x36, 0x33, 0x408007dc, 0x34, 0x40400971, 0x4080034e, 0x408003f5, 0x38,
            0x4080052d, 0x40800887, 0x39, 0x40400187, 0x39, 0x31, 0x404008ce, 0x38, 0x31, 0x34,
            0x36, 0x37, 0x35, 0x31, 0x4040062b, 0x31, 0x32, 0x33, 0x39, 0x40c001a9, 0x39, 0x30,
            0x37, 0x31, 0x38, 0x36, 0x34, 0x39, 0x34, 0x32, 0x33, 0x31, 0x39, 0x36, 0x31, 0x35,
            0x36, 0x404001ec, 0x404006bc, 0x39, 0x35, 0x40400926, 0x40400469, 0x4040011b, 0x36,
            0x30, 0x33, 0x38, 0x40400a25, 0x4040016f, 0x40400384, 0x36, 0x32, 0x4040045a, 0x35,
            0x4040084c, 0x36, 0x33, 0x38, 0x39, 0x33, 0x37, 0x37, 0x38, 0x37, 0x404008c5,
            0x404000f8, 0x39, 0x37, 0x39, 0x32, 0x30, 0x37, 0x37, 0x33, 0x404005d7, 0x32, 0x31,
            0x38, 0x32, 0x35, 0x36, 0x404007df, 0x36, 0x36, 0x404006d6, 0x34, 0x32, 0x4080067e,
            0x36, 0x404006e6, 0x34, 0x34, 0x40400024, 0x35, 0x34, 0x39, 0x32, 0x30, 0x32, 0x36,
            0x30, 0x35, 0x40400ab3, 0x408003e4, 0x32, 0x30, 0x31, 0x34, 0x39, 0x404004d2, 0x38,
            0x35, 0x30, 0x37, 0x33, 0x40400599, 0x36, 0x36, 0x36, 0x30, 0x40400194, 0x32, 0x34,
            0x33, 0x34, 0x30, 0x40400087, 0x30, 0x4040076b, 0x38, 0x36, 0x33, 0x40400956,
            0x404007e4, 0x4040042b, 0x40400174, 0x35, 0x37, 0x39, 0x36, 0x32, 0x36, 0x38, 0x35,
            0x36, 0x40400140, 0x35, 0x30, 0x38, 0x40400523, 0x35, 0x38, 0x37, 0x39, 0x36, 0x39,
            0x39, 0x40400711, 0x35, 0x37, 0x34, 0x40400a18, 0x38, 0x34, 0x30, 0x404008b3, 0x31,
            0x34, 0x35, 0x39, 0x31, 0x4040078c, 0x37, 0x30, 0x40400234, 0x30, 0x31, 0x40400be7,
            0x31, 0x32, 0x40400c74, 0x30, 0x404003c3, 0x33, 0x39, 0x40400b2a, 0x40400112, 0x37,
            0x31, 0x35, 0x404003b0, 0x34, 0x32, 0x30, 0x40800bf2, 0x39, 0x40400bc2, 0x30, 0x37,
            0x40400341, 0x40400795, 0x40400aaf, 0x40400c62, 0x32, 0x31, 0x40400960, 0x32, 0x35,
            0x31, 0x4040057b, 0x40400944, 0x39, 0x32, 0x404001b2, 0x38, 0x32, 0x36, 0x40400b66,
            0x32, 0x40400278, 0x33, 0x32, 0x31, 0x35, 0x37, 0x39, 0x31, 0x39, 0x38, 0x34, 0x31,
            0x34, 0x4080087b, 0x39, 0x31, 0x36, 0x34, 0x408006e8, 0x39, 0x40800b58, 0x404008db,
            0x37, 0x32, 0x32, 0x40400321, 0x35, 0x404008a4, 0x40400141, 0x39, 0x31, 0x30,
            0x404000bc, 0x40400c5b, 0x35, 0x32, 0x38, 0x30, 0x31, 0x37, 0x40400231, 0x37, 0x31,
            0x32, 0x40400914, 0x38, 0x33, 0x32, 0x40400373, 0x31, 0x40400589, 0x30, 0x39, 0x33,
            0x35, 0x33, 0x39, 0x36, 0x35, 0x37, 0x4040064b, 0x31, 0x30, 0x38, 0x33, 0x40400069,
            0x35, 0x31, 0x4040077a, 0x40400d5a, 0x31, 0x34, 0x34, 0x34, 0x32, 0x31, 0x30, 0x30,
            0x40400202, 0x30, 0x33, 0x4040019c, 0x31, 0x31, 0x30, 0x33, 0x40400c81, 0x40400009,
            0x40400026, 0x40c00602, 0x35, 0x31, 0x36, 0x404005d9, 0x40800883, 0x4040092a, 0x35,
            0x40800c42, 0x38, 0x35, 0x31, 0x37, 0x31, 0x34, 0x33, 0x37, 0x40400605, 0x4040006d,
            0x31, 0x35, 0x35, 0x36, 0x35, 0x30, 0x38, 0x38, 0x404003b9, 0x39, 0x38, 0x39, 0x38,
            0x35, 0x39, 0x39, 0x38, 0x32, 0x33, 0x38, 0x404001cf, 0x404009ba, 0x33, 0x4040016c,
            0x4040043e, 0x404009c3, 0x38, 0x40800e05, 0x33, 0x32, 0x40400107, 0x35, 0x40400305,
            0x33, 0x404001ca, 0x39, 0x4040041b, 0x39, 0x38, 0x4040087d, 0x34, 0x40400cb8, 0x37,
            0x4040064b, 0x30, 0x37, 0x404000e5, 0x34, 0x38, 0x31, 0x34, 0x31, 0x40400539, 0x38,
            0x35, 0x39, 0x34, 0x36, 0x31, 0x40400bc9, 0x38, 0x30,
        ]),
    },
    HuffTest {
        input: Some("testdata/huffman-rand-1k.in"),
        want: Some("testdata/huffman-rand-1k.%s.expect"),
        want_no_input: Some("testdata/huffman-rand-1k.%s.expect-noinput"),
        tokens: Some(&[
            0xf8, 0x8b, 0x96, 0x76, 0x48, 0xd, 0x85, 0x94, 0x25, 0x80, 0xaf, 0xc2, 0xfe, 0x8d,
            0xe8, 0x20, 0xeb, 0x17, 0x86, 0xc9, 0xb7, 0xc5, 0xde, 0x6, 0xea, 0x7d, 0x18, 0x8b,
            0xe7, 0x3e, 0x7, 0xda, 0xdf, 0xff, 0x6c, 0x73, 0xde, 0xcc, 0xe7, 0x6d, 0x8d, 0x4, 0x19,
            0x49, 0x7f, 0x47, 0x1f, 0x48, 0x15, 0xb0, 0xe8, 0x9e, 0xf2, 0x31, 0x59, 0xde, 0x34,
            0xb4, 0x5b, 0xe5, 0xe0, 0x9, 0x11, 0x30, 0xc2, 0x88, 0x5b, 0x7c, 0x5d, 0x14, 0x13,
            0x6f, 0x23, 0xa9, 0xd, 0xbc, 0x2d, 0x23, 0xbe, 0xd9, 0xed, 0x75, 0x4, 0x6c, 0x99, 0xdf,
            0xfd, 0x70, 0x66, 0xe6, 0xee, 0xd9, 0xb1, 0x9e, 0x6e, 0x83, 0x59, 0xd5, 0xd4, 0x80,
            0x59, 0x98, 0x77, 0x89, 0x43, 0x38, 0xc9, 0xaf, 0x30, 0x32, 0x9a, 0x20, 0x1b, 0x46,
            0x3d, 0x67, 0x6e, 0xd7, 0x72, 0x9e, 0x4e, 0x21, 0x4f, 0xc6, 0xe0, 0xd4, 0x7b, 0x4,
            0x8d, 0xa5, 0x3, 0xf6, 0x5, 0x9b, 0x6b, 0xdc, 0x2a, 0x93, 0x77, 0x28, 0xfd, 0xb4, 0x62,
            0xda, 0x20, 0xe7, 0x1f, 0xab, 0x6b, 0x51, 0x43, 0x39, 0x2f, 0xa0, 0x92, 0x1, 0x6c,
            0x75, 0x3e, 0xf4, 0x35, 0xfd, 0x43, 0x2e, 0xf7, 0xa4, 0x75, 0xda, 0xea, 0x9b, 0xa,
            0x64, 0xb, 0xe0, 0x23, 0x29, 0xbd, 0xf7, 0xe7, 0x83, 0x3c, 0xfb, 0xdf, 0xb3, 0xae,
            0x4f, 0xa4, 0x47, 0x55, 0x99, 0xde, 0x2f, 0x96, 0x6e, 0x1c, 0x43, 0x4c, 0x87, 0xe2,
            0x7c, 0xd9, 0x5f, 0x4c, 0x7c, 0xe8, 0x90, 0x3, 0xdb, 0x30, 0x95, 0xd6, 0x22, 0xc, 0x47,
            0xb8, 0x4d, 0x6b, 0xbd, 0x24, 0x11, 0xab, 0x2c, 0xd7, 0xbe, 0x6e, 0x7a, 0xd6, 0x8,
            0xa3, 0x98, 0xd8, 0xdd, 0x15, 0x6a, 0xfa, 0x93, 0x30, 0x1, 0x25, 0x1d, 0xa2, 0x74,
            0x86, 0x4b, 0x6a, 0x95, 0xe8, 0xe1, 0x4e, 0xe, 0x76, 0xb9, 0x49, 0xa9, 0x5f, 0xa0,
            0xa6, 0x63, 0x3c, 0x7e, 0x7e, 0x20, 0x13, 0x4f, 0xbb, 0x66, 0x92, 0xb8, 0x2e, 0xa4,
            0xfa, 0x48, 0xcb, 0xae, 0xb9, 0x3c, 0xaf, 0xd3, 0x1f, 0xe1, 0xd5, 0x8d, 0x42, 0x6d,
            0xf0, 0xfc, 0x8c, 0xc, 0x0, 0xde, 0x40, 0xab, 0x8b, 0x47, 0x97, 0x4e, 0xa8, 0xcf, 0x8e,
            0xdb, 0xa6, 0x8b, 0x20, 0x9, 0x84, 0x7a, 0x66, 0xe5, 0x98, 0x29, 0x2, 0x95, 0xe6, 0x38,
            0x32, 0x60, 0x3, 0xe3, 0x9a, 0x1e, 0x54, 0xe8, 0x63, 0x80, 0x48, 0x9c, 0xe7, 0x63,
            0x33, 0x6e, 0xa0, 0x65, 0x83, 0xfa, 0xc6, 0xba, 0x7a, 0x43, 0x71, 0x5, 0xf5, 0x68,
            0x69, 0x85, 0x9c, 0xba, 0x45, 0xcd, 0x6b, 0xb, 0x19, 0xd1, 0xbb, 0x7f, 0x70, 0x85,
            0x92, 0xd1, 0xb4, 0x64, 0x82, 0xb1, 0xe4, 0x62, 0xc5, 0x3c, 0x46, 0x1f, 0x92, 0x31,
            0x1c, 0x4e, 0x41, 0x77, 0xf7, 0xe7, 0x87, 0xa2, 0xf, 0x6e, 0xe8, 0x92, 0x3, 0x6b, 0xa,
            0xe7, 0xa9, 0x3b, 0x11, 0xda, 0x66, 0x8a, 0x29, 0xda, 0x79, 0xe1, 0x64, 0x8d, 0xe3,
            0x54, 0xd4, 0xf5, 0xef, 0x64, 0x87, 0x3b, 0xf4, 0xc2, 0xf4, 0x71, 0x13, 0xa9, 0xe9,
            0xe0, 0xa2, 0x6, 0x14, 0xab, 0x5d, 0xa7, 0x96, 0x0, 0xd6, 0xc3, 0xcc, 0x57, 0xed, 0x39,
            0x6a, 0x25, 0xcd, 0x76, 0xea, 0xba, 0x3a, 0xf2, 0xa1, 0x95, 0x5d, 0xe5, 0x71, 0xcf,
            0x9c, 0x62, 0x9e, 0x6a, 0xfa, 0xd5, 0x31, 0xd1, 0xa8, 0x66, 0x30, 0x33, 0xaa, 0x51,
            0x17, 0x13, 0x82, 0x99, 0xc8, 0x14, 0x60, 0x9f, 0x4d, 0x32, 0x6d, 0xda, 0x19, 0x26,
            0x21, 0xdc, 0x7e, 0x2e, 0x25, 0x67, 0x72, 0xca, 0xf, 0x92, 0xcd, 0xf6, 0xd6, 0xcb,
            0x97, 0x8a, 0x33, 0x58, 0x73, 0x70, 0x91, 0x1d, 0xbf, 0x28, 0x23, 0xa3, 0xc, 0xf1,
            0x83, 0xc3, 0xc8, 0x56, 0x77, 0x68, 0xe3, 0x82, 0xba, 0xb9, 0x57, 0x56, 0x57, 0x9c,
            0xc3, 0xd6, 0x14, 0x5, 0x3c, 0xb1, 0xaf, 0x93, 0xc8, 0x8a, 0x57, 0x7f, 0x53, 0xfa,
            0x2f, 0xaa, 0x6e, 0x66, 0x83, 0xfa, 0x33, 0xd1, 0x21, 0xab, 0x1b, 0x71, 0xb4, 0x7c,
            0xda, 0xfd, 0xfb, 0x7f, 0x20, 0xab, 0x5e, 0xd5, 0xca, 0xfd, 0xdd, 0xe0, 0xee, 0xda,
            0xba, 0xa8, 0x27, 0x99, 0x97, 0x69, 0xc1, 0x3c, 0x82, 0x8c, 0xa, 0x5c, 0x2d, 0x5b,
            0x88, 0x3e, 0x34, 0x35, 0x86, 0x37, 0x46, 0x79, 0xe1, 0xaa, 0x19, 0xfb, 0xaa, 0xde,
            0x15, 0x9, 0xd, 0x1a, 0x57, 0xff, 0xb5, 0xf, 0xf3, 0x2b, 0x5a, 0x6a, 0x4d, 0x19, 0x77,
            0x71, 0x45, 0xdf, 0x4f, 0xb3, 0xec, 0xf1, 0xeb, 0x18, 0x53, 0x3e, 0x3b, 0x47, 0x8,
            0x9a, 0x73, 0xa0, 0x5c, 0x8c, 0x5f, 0xeb, 0xf, 0x3a, 0xc2, 0x43, 0x67, 0xb4, 0x66,
            0x67, 0x80, 0x58, 0xe, 0xc1, 0xec, 0x40, 0xd4, 0x22, 0x94, 0xca, 0xf9, 0xe8, 0x92,
            0xe4, 0x69, 0x38, 0xbe, 0x67, 0x64, 0xca, 0x50, 0xc7, 0x6, 0x67, 0x42, 0x6e, 0xa3,
            0xf0, 0xb7, 0x6c, 0xf2, 0xe8, 0x5f, 0xb1, 0xaf, 0xe7, 0xdb, 0xbb, 0x77, 0xb5, 0xf8,
            0xcb, 0x8, 0xc4, 0x75, 0x7e, 0xc0, 0xf9, 0x1c, 0x7f, 0x3c, 0x89, 0x2f, 0xd2, 0x58,
            0x3a, 0xe2, 0xf8, 0x91, 0xb6, 0x7b, 0x24, 0x27, 0xe9, 0xae, 0x84, 0x8b, 0xde, 0x74,
            0xac, 0xfd, 0xd9, 0xb7, 0x69, 0x2a, 0xec, 0x32, 0x6f, 0xf0, 0x92, 0x84, 0xf1, 0x40,
            0xc, 0x8a, 0xbc, 0x39, 0x6e, 0x2e, 0x73, 0xd4, 0x6e, 0x8a, 0x74, 0x2a, 0xdc, 0x60,
            0x1f, 0xa3, 0x7, 0xde, 0x75, 0x8b, 0x74, 0xc8, 0xfe, 0x63, 0x75, 0xf6, 0x3d, 0x63,
            0xac, 0x33, 0x89, 0xc3, 0xf0, 0xf8, 0x2d, 0x6b, 0xb4, 0x9e, 0x74, 0x8b, 0x5c, 0x33,
            0xb4, 0xca, 0xa8, 0xe4, 0x99, 0xb6, 0x90, 0xa1, 0xef, 0xf, 0xd3, 0x61, 0xb2, 0xc6,
            0x1a, 0x94, 0x7c, 0x44, 0x55, 0xf4, 0x45, 0xff, 0x9e, 0xa5, 0x5a, 0xc6, 0xa0, 0xe8,
            0x2a, 0xc1, 0x8d, 0x6f, 0x34, 0x11, 0xb9, 0xbe, 0x4e, 0xd9, 0x87, 0x97, 0x73, 0xcf,
            0x3d, 0x23, 0xae, 0xd5, 0x1a, 0x5e, 0xae, 0x5d, 0x6a, 0x3, 0xf9, 0x22, 0xd, 0x10, 0xd9,
            0x47, 0x69, 0x15, 0x3f, 0xee, 0x52, 0xa3, 0x8, 0xd2, 0x3c, 0x51, 0xf4, 0xf8, 0x9d,
            0xe4, 0x98, 0x89, 0xc8, 0x67, 0x39, 0xd5, 0x5e, 0x35, 0x78, 0x27, 0xe8, 0x3c, 0x80,
            0xae, 0x79, 0x71, 0xd2, 0x93, 0xf4, 0xaa, 0x51, 0x12, 0x1c, 0x4b, 0x1b, 0xe5, 0x6e,
            0x15, 0x6f, 0xe4, 0xbb, 0x51, 0x9b, 0x45, 0x9f, 0xf9, 0xc4, 0x8c, 0x2a, 0xfb, 0x1a,
            0xdf, 0x55, 0xd3, 0x48, 0x93, 0x27, 0x1, 0x26, 0xc2, 0x6b, 0x55, 0x6d, 0xa2, 0xfb,
            0x84, 0x8b, 0xc9, 0x9e, 0x28, 0xc2, 0xef, 0x1a, 0x24, 0xec, 0x9b, 0xae, 0xbd, 0x60,
            0xe9, 0x15, 0x35, 0xee, 0x42, 0xa4, 0x33, 0x5b, 0xfa, 0xf, 0xb6, 0xf7, 0x1, 0xa6, 0x2,
            0x4c, 0xca, 0x90, 0x58, 0x3a, 0x96, 0x41, 0xe7, 0xcb, 0x9, 0x8c, 0xdb, 0x85, 0x4d,
            0xa8, 0x89, 0xf3, 0xb5, 0x8e, 0xfd, 0x75, 0x5b, 0x4f, 0xed, 0xde, 0x3f, 0xeb, 0x38,
            0xa3, 0xbe, 0xb0, 0x73, 0xfc, 0xb8, 0x54, 0xf7, 0x4c, 0x30, 0x67, 0x2e, 0x38, 0xa2,
            0x54, 0x18, 0xba, 0x8, 0xbf, 0xf2, 0x39, 0xd5, 0xfe, 0xa5, 0x41, 0xc6, 0x66, 0x66,
            0xba, 0x81, 0xef, 0x67, 0xe4, 0xe6, 0x3c, 0xc, 0xca, 0xa4, 0xa, 0x79, 0xb3, 0x57, 0x8b,
            0x8a, 0x75, 0x98, 0x18, 0x42, 0x2f, 0x29, 0xa3, 0x82, 0xef, 0x9f, 0x86, 0x6, 0x23,
            0xe1, 0x75, 0xfa, 0x8, 0xb1, 0xde, 0x17, 0x4a,
        ]),
    },
    HuffTest {
        input: Some("testdata/huffman-rand-limit.in"),
        want: Some("testdata/huffman-rand-limit.%s.expect"),
        want_no_input: Some("testdata/huffman-rand-limit.%s.expect-noinput"),
        tokens: Some(&[
            0x61, 0x51c00000, 0xa, 0xf8, 0x8b, 0x96, 0x76, 0x48, 0xa, 0x85, 0x94, 0x25, 0x80, 0xaf,
            0xc2, 0xfe, 0x8d, 0xe8, 0x20, 0xeb, 0x17, 0x86, 0xc9, 0xb7, 0xc5, 0xde, 0x6, 0xea,
            0x7d, 0x18, 0x8b, 0xe7, 0x3e, 0x7, 0xda, 0xdf, 0xff, 0x6c, 0x73, 0xde, 0xcc, 0xe7,
            0x6d, 0x8d, 0x4, 0x19, 0x49, 0x7f, 0x47, 0x1f, 0x48, 0x15, 0xb0, 0xe8, 0x9e, 0xf2,
            0x31, 0x59, 0xde, 0x34, 0xb4, 0x5b, 0xe5, 0xe0, 0x9, 0x11, 0x30, 0xc2, 0x88, 0x5b,
            0x7c, 0x5d, 0x14, 0x13, 0x6f, 0x23, 0xa9, 0xa, 0xbc, 0x2d, 0x23, 0xbe, 0xd9, 0xed,
            0x75, 0x4, 0x6c, 0x99, 0xdf, 0xfd, 0x70, 0x66, 0xe6, 0xee, 0xd9, 0xb1, 0x9e, 0x6e,
            0x83, 0x59, 0xd5, 0xd4, 0x80, 0x59, 0x98, 0x77, 0x89, 0x43, 0x38, 0xc9, 0xaf, 0x30,
            0x32, 0x9a, 0x20, 0x1b, 0x46, 0x3d, 0x67, 0x6e, 0xd7, 0x72, 0x9e, 0x4e, 0x21, 0x4f,
            0xc6, 0xe0, 0xd4, 0x7b, 0x4, 0x8d, 0xa5, 0x3, 0xf6, 0x5, 0x9b, 0x6b, 0xdc, 0x2a, 0x93,
            0x77, 0x28, 0xfd, 0xb4, 0x62, 0xda, 0x20, 0xe7, 0x1f, 0xab, 0x6b, 0x51, 0x43, 0x39,
            0x2f, 0xa0, 0x92, 0x1, 0x6c, 0x75, 0x3e, 0xf4, 0x35, 0xfd, 0x43, 0x2e, 0xf7, 0xa4,
            0x75, 0xda, 0xea, 0x9b, 0xa,
        ]),
    },
    HuffTest {
        input: Some("testdata/huffman-shifts.in"),
        want: Some("testdata/huffman-shifts.%s.expect"),
        want_no_input: Some("testdata/huffman-shifts.%s.expect-noinput"),
        tokens: Some(&[
            0x31, 0x30, 0x7fc00001, 0x7fc00001, 0x7fc00001, 0x7fc00001, 0x7fc00001, 0x7fc00001,
            0x7fc00001, 0x7fc00001, 0x7fc00001, 0x7fc00001, 0x7fc00001, 0x7fc00001, 0x7fc00001,
            0x7fc00001, 0x7fc00001, 0x52400001, 0xd, 0xa, 0x32, 0x33, 0x7fc00001, 0x7fc00001,
            0x7fc00001, 0x7fc00001, 0x7fc00001, 0x7fc00001, 0x7fc00001, 0x7fc00001, 0x7fc00001,
            0x7f400001,
        ]),
    },
    HuffTest {
        input: Some("testdata/huffman-text-shift.in"),
        want: Some("testdata/huffman-text-shift.%s.expect"),
        want_no_input: Some("testdata/huffman-text-shift.%s.expect-noinput"),
        tokens: Some(&[
            0x2f, 0x2f, 0x43, 0x6f, 0x70, 0x79, 0x72, 0x69, 0x67, 0x68, 0x74, 0x32, 0x30, 0x30,
            0x39, 0x54, 0x68, 0x47, 0x6f, 0x41, 0x75, 0x74, 0x68, 0x6f, 0x72, 0x2e, 0x41, 0x6c,
            0x6c, 0x40800016, 0x72, 0x72, 0x76, 0x64, 0x2e, 0xd, 0xa, 0x2f, 0x2f, 0x55, 0x6f, 0x66,
            0x74, 0x68, 0x69, 0x6f, 0x75, 0x72, 0x63, 0x63, 0x6f, 0x64, 0x69, 0x67, 0x6f, 0x76,
            0x72, 0x6e, 0x64, 0x62, 0x79, 0x42, 0x53, 0x44, 0x2d, 0x74, 0x79, 0x6c, 0x40400020,
            0x6c, 0x69, 0x63, 0x6e, 0x74, 0x68, 0x74, 0x63, 0x6e, 0x62, 0x66, 0x6f, 0x75, 0x6e,
            0x64, 0x69, 0x6e, 0x74, 0x68, 0x4c, 0x49, 0x43, 0x45, 0x4e, 0x53, 0x45, 0x66, 0x69,
            0x6c, 0x2e, 0xd, 0xa, 0xd, 0xa, 0x70, 0x63, 0x6b, 0x67, 0x6d, 0x69, 0x6e, 0x4040000a,
            0x69, 0x6d, 0x70, 0x6f, 0x72, 0x74, 0x22, 0x6f, 0x22, 0x4040000c, 0x66, 0x75, 0x6e,
            0x63, 0x6d, 0x69, 0x6e, 0x28, 0x29, 0x7b, 0xd, 0xa, 0x9, 0x76, 0x72, 0x62, 0x3d, 0x6d,
            0x6b, 0x28, 0x5b, 0x5d, 0x62, 0x79, 0x74, 0x2c, 0x36, 0x35, 0x35, 0x33, 0x35, 0x29,
            0xd, 0xa, 0x9, 0x66, 0x2c, 0x5f, 0x3a, 0x3d, 0x6f, 0x2e, 0x43, 0x72, 0x74, 0x28, 0x22,
            0x68, 0x75, 0x66, 0x66, 0x6d, 0x6e, 0x2d, 0x6e, 0x75, 0x6c, 0x6c, 0x2d, 0x6d, 0x78,
            0x2e, 0x69, 0x6e, 0x22, 0x40800021, 0x2e, 0x57, 0x72, 0x69, 0x74, 0x28, 0x62, 0x29,
            0xd, 0xa, 0x7d, 0xd, 0xa, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a,
            0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x58, 0x78,
            0x79, 0x7a, 0x21, 0x22, 0x23, 0xc2, 0xa4, 0x25, 0x26, 0x2f, 0x3f, 0x22,
        ]),
    },
    HuffTest {
        input: Some("testdata/huffman-text.in"),
        want: Some("testdata/huffman-text.%s.expect"),
        want_no_input: Some("testdata/huffman-text.%s.expect-noinput"),
        tokens: Some(&[
            0x2f, 0x2f, 0x20, 0x43, 0x6f, 0x70, 0x79, 0x72, 0x69, 0x67, 0x68, 0x74, 0x20, 0x32,
            0x30, 0x30, 0x39, 0x20, 0x54, 0x68, 0x65, 0x20, 0x47, 0x6f, 0x20, 0x41, 0x75, 0x74,
            0x68, 0x6f, 0x72, 0x73, 0x2e, 0x20, 0x41, 0x6c, 0x6c, 0x20, 0x4080001e, 0x73, 0x20,
            0x72, 0x65, 0x73, 0x65, 0x72, 0x76, 0x65, 0x64, 0x2e, 0xd, 0xa, 0x2f, 0x2f, 0x20, 0x55,
            0x73, 0x65, 0x20, 0x6f, 0x66, 0x20, 0x74, 0x68, 0x69, 0x73, 0x20, 0x73, 0x6f, 0x75,
            0x72, 0x63, 0x65, 0x20, 0x63, 0x6f, 0x64, 0x65, 0x20, 0x69, 0x73, 0x20, 0x67, 0x6f,
            0x76, 0x65, 0x72, 0x6e, 0x65, 0x64, 0x20, 0x62, 0x79, 0x20, 0x61, 0x20, 0x42, 0x53,
            0x44, 0x2d, 0x73, 0x74, 0x79, 0x6c, 0x65, 0x40800036, 0x6c, 0x69, 0x63, 0x65, 0x6e,
            0x73, 0x65, 0x20, 0x74, 0x68, 0x61, 0x74, 0x20, 0x63, 0x61, 0x6e, 0x20, 0x62, 0x65,
            0x20, 0x66, 0x6f, 0x75, 0x6e, 0x64, 0x20, 0x69, 0x6e, 0x20, 0x74, 0x68, 0x65, 0x20,
            0x4c, 0x49, 0x43, 0x45, 0x4e, 0x53, 0x45, 0x20, 0x66, 0x69, 0x6c, 0x65, 0x2e, 0xd, 0xa,
            0xd, 0xa, 0x70, 0x61, 0x63, 0x6b, 0x61, 0x67, 0x65, 0x20, 0x6d, 0x61, 0x69, 0x6e,
            0x4040000f, 0x69, 0x6d, 0x70, 0x6f, 0x72, 0x74, 0x20, 0x22, 0x6f, 0x73, 0x22,
            0x4040000e, 0x66, 0x75, 0x6e, 0x63, 0x4080001b, 0x28, 0x29, 0x20, 0x7b, 0xd, 0xa, 0x9,
            0x76, 0x61, 0x72, 0x20, 0x62, 0x20, 0x3d, 0x20, 0x6d, 0x61, 0x6b, 0x65, 0x28, 0x5b,
            0x5d, 0x62, 0x79, 0x74, 0x65, 0x2c, 0x20, 0x36, 0x35, 0x35, 0x33, 0x35, 0x29, 0xd, 0xa,
            0x9, 0x66, 0x2c, 0x20, 0x5f, 0x20, 0x3a, 0x3d, 0x20, 0x6f, 0x73, 0x2e, 0x43, 0x72,
            0x65, 0x61, 0x74, 0x65, 0x28, 0x22, 0x68, 0x75, 0x66, 0x66, 0x6d, 0x61, 0x6e, 0x2d,
            0x6e, 0x75, 0x6c, 0x6c, 0x2d, 0x6d, 0x61, 0x78, 0x2e, 0x69, 0x6e, 0x22, 0x4080002a,
            0x2e, 0x57, 0x72, 0x69, 0x74, 0x65, 0x28, 0x62, 0x29, 0xd, 0xa, 0x7d, 0xd, 0xa,
        ]),
    },
    HuffTest {
        input: Some("testdata/huffman-zero.in"),
        want: Some("testdata/huffman-zero.%s.expect"),
        want_no_input: Some("testdata/huffman-zero.%s.expect-noinput"),
        tokens: Some(&[0x30, ML, 0x4b800000]),
    },
    HuffTest {
        input: None,
        want: None,
        want_no_input: Some("testdata/null-long-match.%s.expect-noinput"),
        tokens: Some(&[
            0x0, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML,
            ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, ML, 0x41400000,
        ]),
    },
];

/// TestWriteBlock tests if the writeBlock encoding has changed.
#[test]
fn test_write_block() {
    for test in WRITE_BLOCK_TESTS {
        test_block(test, "wb");
    }
}

/// test_write_block_dynamic tests if the writeBlockDynamic encoding has changed.
#[test]
fn test_write_block_dynamic() {
    for test in WRITE_BLOCK_TESTS {
        test_block(test, "dyn");
    }
}

/// test_block tests a block against its references.
fn test_block(test: &HuffTest, ttype: &str) {
    let want_no_input_file = test
        .want_no_input
        .unwrap()
        .to_string()
        .replace("%s", ttype)
        .replace("testdata", TESTDATA_FOLDER);

    if let Some(input) = test.input {
        let input_file = input.to_string().replace("testdata", TESTDATA_FOLDER);
        let want_file = test
            .want
            .unwrap()
            .to_string()
            .replace("%s", ttype)
            .replace("testdata", TESTDATA_FOLDER);
        println!("testing {}, {}", input_file, want_file);
        let input = std::fs::read(input_file).unwrap();
        let want = std::fs::read(want_file).unwrap();
        let mut buf = bytes::Buffer::new();
        let mut bw = HuffmanBitWriter::new(&mut buf);
        write_to_type(ttype, &mut bw, test.tokens.unwrap(), Some(&input));

        let got = buf.bytes();
        assert_eq!(want, got);

        // Test if the writer produces the same output after reset.
        {
            let mut buf = bytes::Buffer::new();
            let mut bw = HuffmanBitWriter::new(&mut buf);
            write_to_type(ttype, &mut bw, test.tokens.unwrap(), Some(&input));

            let mut buf2 = bytes::Buffer::new();
            bw.reset(&mut buf2);
            write_to_type(ttype, &mut bw, test.tokens.unwrap(), Some(&input));
            bw.flush();
            let got = buf.bytes();
            assert_eq!(want, got);
        }
        test_writer_eof("wb", test, true);
    }

    println!("Testing {}", want_no_input_file);
    let want_ni = std::fs::read(want_no_input_file).unwrap();
    let mut buf = bytes::Buffer::new();
    let mut bw = HuffmanBitWriter::new(&mut buf);
    write_to_type(ttype, &mut bw, test.tokens.unwrap(), None);
    let got = buf.bytes();
    assert_eq!(want_ni, got);

    // Test if the writer produces the same output after reset.
    {
        let mut buf = bytes::Buffer::new();
        let mut bw = HuffmanBitWriter::new(&mut buf);
        write_to_type(ttype, &mut bw, test.tokens.unwrap(), None);

        let mut buf2 = bytes::Buffer::new();
        bw.reset(&mut buf2);
        write_to_type(ttype, &mut bw, test.tokens.unwrap(), None);
        bw.flush();
        let got = buf.bytes();
        assert_eq!(want_ni, got);
    }
    test_writer_eof("wb", test, true);
}

fn write_to_type(
    ttype: &str,
    bw: &mut HuffmanBitWriter<bytes::Buffer>,
    tok: &[Token],
    input: Option<&[u8]>,
) {
    match ttype {
        "wb" => bw.write_block(tok, false, input),
        "dyn" => bw.write_block_dynamic(tok, false, input),
        _ => {
            panic!("unknown test type")
        }
    }

    if bw.error().is_err() {
        panic!("write error: {}", bw.error().as_ref().unwrap_err());
    }

    bw.flush();

    if bw.error().is_err() {
        panic!("flush error: {}", bw.error().as_ref().unwrap_err());
    }
}

/// test_writer_eof tests if the written block contains an EOF marker.
fn test_writer_eof(ttype: &str, test: &HuffTest, use_input: bool) {
    if use_input && test.input.is_none() {
        return;
    }
    let mut input = Vec::new();
    if use_input {
        let mut input_path = test.input.unwrap().to_string();
        if input_path.starts_with("testdata") {
            input_path = input_path.replace("testdata", TESTDATA_FOLDER);
        }
        input = std::fs::read(input_path).unwrap();
    }
    let mut buf = bytes::Buffer::new();
    let mut bw = HuffmanBitWriter::new(&mut buf);
    match ttype {
        "wb" => bw.write_block(test.tokens.unwrap(), true, Some(&input)),
        "dyn" => bw.write_block_dynamic(test.tokens.unwrap(), true, Some(&input)),
        "huff" => {
            bw.write_block_huff(true, &input);
        }
        _ => {
            panic!("unknown test type");
        }
    }
    if bw.error().is_err() {
        panic!("error: {}", bw.error().as_ref().unwrap());
    }

    bw.flush();
    if bw.error().is_err() {
        panic!("error: {}", bw.error().as_ref().unwrap());
    }
    let b = buf.bytes();
    assert_ne!(0, b.len(), "no output received");

    assert_eq!(
        1,
        b[0] & 1,
        "block not marked with EOF for input {}",
        test.input.unwrap()
    );
}

#[test]
fn test_structure_sizes() {
    assert!(
        200 >= std::mem::size_of::<HuffmanBitWriter<bytes::Buffer>>(),
        "consider reducing size of HuffmanBitWriter"
    );
}