#!/bin/sh

if test "${0##*/}" = "gunzip.tests"; then
    unpack=gunzip
    ext=gz
elif test "${0##*/}" = "bunzip2.tests"; then
    unpack=bunzip2
    ext=bz2
else
    echo "WTF? argv0='$0'"
    exit 1
fi

bb="busybox "

unset LC_ALL
unset LC_MESSAGES
unset LANG
unset LANGUAGE

hello_gz() {
    # Gzipped "HELLO\n"
    #_________________________ vvv vvv vvv vvv - mtime
    echo -ne "\x1f\x8b\x08\x00\x85\x1d\xef\x45\x02\x03\xf3\x70\xf5\xf1\xf1\xe7"
    echo -ne "\x02\x00\x6e\xd7\xac\xfd\x06\x00\x00\x00"
}

hello_bz2() {
    # Bzipped "HELLO\n"
    echo -ne "\x42\x5a\x68\x39\x31\x41\x59\x26\x53\x59\x5b\xb8\xe8\xa3\x00\x00"
    echo -ne "\x01\x44\x00\x00\x10\x02\x44\xa0\x00\x30\xcd\x00\xc3\x46\x29\x97"
    echo -ne "\x17\x72\x45\x38\x50\x90\x5b\xb8\xe8\xa3"
}

prep() {
    rm -f t*
    hello_$ext >t1.$ext
    hello_$ext >t2.$ext
}

check() {
    eval $2 >t_actual 2>&1
    if echo -ne "$expected" | cmp - t_actual; then
	echo "$1: PASS"
    else
	echo "$1: FAIL"
    fi
}

mkdir testdir 2>/dev/null
(
cd testdir || { echo "cannot cd testdir!"; exit 1; }

expected="$unpack: z: No such file or directory
1
HELLO
"
prep; check "$unpack: doesnt exist" "${bb}$unpack z t1.$ext; echo \$?; cat t1"


expected="$unpack: t.zz: unknown suffix - ignored
1
HELLO
"
prep; >t.zz; check "$unpack: unknown suffix" "${bb}$unpack t.zz t1.$ext; echo \$?; cat t1"


# In this case file "t1" exists, and we skip t1.gz and unpack t2.gz
expected="$unpack: t1: File exists
1
HELLO
"
prep; >t1; check "$unpack: already exists" "${bb}$unpack t1.$ext t2.$ext; echo \$?; cat t1 t2"


# From old testsuite
expected="HELLO\n0\n"
prep; check "$unpack: stream unpack" "cat t1.$ext | ${bb}$unpack; echo $?"

expected="ok\n"
prep; check "$unpack: delete src" "${bb}$unpack t2.$ext; test ! -f t2.$ext && echo ok"

)
rm -rf testdir