### Question:
DeflateDecoder implements AsyncDecoder { @Override public void decode(ByteSource source, ByteSink sink) throws IOException { Inflater inflater; var inflaterPlaceholder = inflaterReference.get(); if (inflaterPlaceholder == null) { if (source.remaining() < Short.BYTES) { return; } var header = ByteBuffer.allocate(Short.BYTES); source.pullBytes(header); header.flip(); boolean nowrap = !isProbablyZLibHeader(header.getShort()); inflater = new Inflater(nowrap); if (!inflaterReference.compareAndSet(null, inflater)) { inflater.end(); return; } inflater.setInput(header.rewind()); } else if (inflaterPlaceholder != CLOSED) { inflater = (Inflater) inflaterPlaceholder; } else { return; } InflaterUtils.inflateSource(inflater, source, sink); if (inflater.finished()) { if (source.hasRemaining()) { throw new IOException("deflate stream finished prematurely"); } } else if (source.finalSource()) { assert !source.hasRemaining(); throw new EOFException("unexpected end of deflate stream"); } } DeflateDecoder(); @Override String encoding(); @Override void decode(ByteSource source, ByteSink sink); @Override void close();  }### Answer:
@Test void decodesUnwrappedGoodStream() throws IOException { byte[] goodStream = BASE64_DEC.decode(good()); byte[] goodStreamNowrap = zlibUnwrap(goodStream); for (var so : BuffSizeOption.values()) { byte[] decoded = Decode.decode(newDecoder(), goodStreamNowrap, so); assertArrayEquals(inflateNowrap(goodStreamNowrap), decoded); } }