# Exercise zdiff with two compressed inputs.
# Before gzip-1.4, this would fail.
-# Copyright (C) 2009-2010 Free Software Foundation, Inc.
+# Copyright (C) 2009-2018 Free Software Foundation, Inc.
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
+# along with this program. If not, see <https://www.gnu.org/licenses/>.
# limit so don't run it by default.
-if test "$VERBOSE" = yes; then
- set -x
- zdiff --version
-fi
+. "${srcdir=.}/init.sh"; path_prepend_ ..
-: ${srcdir=.}
-. "$srcdir/tests/init.sh"; path_prepend_ .
-
-echo a > a || framework_failure
-echo b > b || framework_failure
-gzip a b || framework_failure
+echo a > a || framework_failure_
+echo b > b || framework_failure_
cat <<EOF > exp
1c1
> b
EOF
+diff a b | diff exp - || skip_ "diff output format is incompatible with POSIX"
+
fail=0
-zdiff a.gz b.gz > out 2>&1
-test $? = 1 || fail=1
+gzip a b || fail=1
+returns_ 1 zdiff a.gz b.gz > out 2>&1 || fail=1
-compare out exp || fail=1
+compare exp out || fail=1
rm -f out
# expect success, for equal files