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: bytes.rs
    path of file: ./repos/materialize/src/ore/src
    
    the code of the file until where you have to start completion: // Copyright Materialize, Inc. and contributors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License in the LICENSE file at the
// root of this repository, or onli
    
    fn test_empty() {
        let s = SegmentedBytes::default();

        // We should report as empty.
        assert!(s.is_empty());
        assert_eq!(s.len(), 0);

        // An iterator of segments should return nothing.
        let mut i = s.clone().into_segments();
        assert_eq!(i.next(), None);

        // bytes::Buf shouldn't report anything as remaining.
        assert_eq!(s.remaining(), 0);
        // We should get back an empty chunk if we try to read anything.
        assert!(s.chunk().is_empty());

        // Turn ourselves into a type that impls io::Read.
        let mut reader = s.reader();

        // We shouldn't panic, but we shouldn't get back any bytes.
        let mut buf = Vec::new();
        let bytes_read = reader.read(&mut buf[..]).unwrap();
        assert_eq!(bytes_read, 0);

        // We should be able to seek past the end without panicking.
        reader.seek(SeekFrom::Current(20)).unwrap();
        let bytes_read = reader.read(&mut buf[..]).unwrap();
        assert_eq!(bytes_read, 0);
    }