view scripts/test/cksum.test @ 1087:b73a61542297 draft

I've finally gotten 'cpio' into a shape where it could be useable. This version can archive and extract directories, sockets, FIFOs, devices, symlinks, and regular files. Supported options are -iot, -H FMT (which is a dummy right now). It only writes newc, and could read newc or newcrc. This does NOT implement -d, which essentially is equivalent to mkdir -p $(dirname $FILE) for every file that needs it. Hard links are not supported, though it would be easy to add them given a hash table or something like that. I also have not implemented the "<n> blocks" output on stderr. If desired, I can add it pretty simply. There is one assumption this makes: that the mode of a file, as mode_t, is bitwise equivalent to the mode as defined for the cpio format. This is true of Linux, but is not mandated by POSIX. If it is compiled for a system where that is false, the archives will not be portable.
author Isaac Dunham <>
date Mon, 14 Oct 2013 11:15:22 -0500
parents fa3293dda216
line wrap: on
line source


[ -f ] && .

#testing "name" "command" "result" "infile" "stdin"

# Default behavior on stdin and on files.
testing "cksum on stdin" "echo -n hello | cksum" "3287646509 5\n" "" ""
echo -n "hello" > tmpfile
testing "cksum on file" "cksum tmpfile" "3287646509 5 tmpfile\n" "" ""
rm -f tmpfile
touch one two
testing "cksum on multiple files" "cksum one two" "4294967295 0 one\n4294967295 0 two\n" "" ""
rm -f one two

# Check the length suppression, both calculate the CRC on 'abc' but the second
# option has length suppression on and has the length concatenated to 'abc'.
testing "cksum on abc including length" "echo -n 'abc' | cksum" "1219131554 3\n" "" ""
testing "cksum on abc excluding length" "echo -ne 'abc\x3' | cksum -N" "1219131554 4\n" "" ""

# cksum on no contents gives 0xffffffff (=4294967295)
testing "cksum on no data post-inversion" "echo -n "" | cksum" "4294967295 0\n" "" ""
# If we do preinversion we will then get 0.
testing "cksum on no data pre+post-inversion" "echo -n "" | cksum -P" "0 0\n" "" ""
# If we skip the post-inversion we also get 0
testing "cksum on no data no inversion" "echo -n "" | cksum -I" "0 0\n" "" ""
# Two wrongs make a right.
testing "cksum on no data pre-inversion" "echo -n "" | cksum -PI" "4294967295 0\n" "" ""