queue-file 1.4.10

queue-file is a lightning-fast, transactional, file-based FIFO
Documentation 
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use queue_file::QueueFile;

#[test]
fn reopen_bigger_capacity_wrong_file_len() {
    let path = auto_delete_path::AutoDeletePath::temp();

    {
        let qf = QueueFile::with_capacity(&path, 1024 * 5).unwrap();
        assert_eq!(std::fs::metadata(&path).unwrap().len(), qf.file_len());
    }

    let qf = QueueFile::with_capacity(&path, 1024 * 6).unwrap();
    assert_eq!(std::fs::metadata(&path).unwrap().len(), qf.file_len());
}

#[test]
fn bigger_write_buffer_overwrites_read_buffer() {
    let path = auto_delete_path::AutoDeletePath::temp();
    let mut qf = QueueFile::with_capacity(path, 32 + 4 * 2 + 2 + 4).unwrap();
    qf.set_overwrite_on_remove(false);
    qf.set_read_buffer_size(7);

    qf.add_n(&[&[1, 2, 3], &[4, 5, 6]]).unwrap();
    qf.remove().unwrap();
    qf.remove().unwrap();

    qf.add_n(&[&[7, 8, 9, 10][..], &[0, 0]]).unwrap();
    qf.remove().unwrap();

    qf.add(&[99]).unwrap();
    qf.remove().unwrap();
}

#[test]
fn transfer_expand_invalid_file_len() {
    let path = auto_delete_path::AutoDeletePath::temp();
    let mut qf = QueueFile::with_capacity(path, 32 + (4 + 1) * 3).unwrap();
    qf.set_read_buffer_size(7);

    qf.add_n(&[&[1], &[2], &[3]]).unwrap();
    qf.remove_n(2).unwrap();
    qf.add_n(&[&[1]]).unwrap();

    qf.add_n(&[&[2], &[4]]).unwrap();

    assert_eq!(qf.iter().map(|v| v[0]).collect::<Vec<_>>(), vec![3, 1, 2, 4]);
}