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dnl  Copyright (C) 2025  CismonX <admin@cismon.net>
dnl
dnl  Copying and distribution of this file, with or without modification,
dnl  are permitted in any medium without royalty,
dnl  provided the copyright notice and this notice are preserved.
dnl  This file is offered as-is, without any warranty.
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AT_SETUP([util lib: hash function])
AT_KEYWORDS([lib hash])

AT_CHECK([
    calc_digest() {
        echo "$2" | check-bookmarkfs-util hash -s$1
    }

    seed=$(rand_u64_hex)
    input=$(rand_base64 300)

    hash_1=$(calc_digest $seed $input)
    hash_2=$(calc_digest $seed $input)
    hash_3=$(calc_digest $seed $input)

    # Given the same seed and input, the digest should be consistent.
    if test "$hash_1" != "$hash_2" -o "$hash_2" != "$hash_3"; then
        exit 99
    fi
], , [ignore])

AT_CLEANUP