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#!/bin/sh
# Verify behavior of env.
# Copyright (C) 2009 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
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# 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/>.
if test "$VERBOSE" = yes; then
set -x
env --version
fi
. $srcdir/test-lib.sh
fail=0
# Verify clearing the environment
a=1
export a
env - > out || fail=1
test -s out && fail=1
env -i > out || fail=1
test -s out && fail=1
env -u a -i -u a -- > out || fail=1
test -s out && fail=1
env -i -- a=b > out || fail=1
echo a=b > exp || framework_failure
compare exp out || fail=1
# These tests verify exact status of internal failure.
env --- # unknown option
test $? = 125 || fail=1
env -u # missing option argument
test $? = 125 || fail=1
env sh -c 'exit 2' # exit status propagation
test $? = 2 || fail=2
env . # invalid command
test $? = 126 || fail=1
env no_such # no such command
test $? = 127 || fail=1
# POSIX is clear that environ may, but need not be, sorted.
# Environment variable values may contain newlines, which cannot be
# observed by merely inspecting output from env.
# Cygwin requires a minimal environment to launch new processes: execve
# adds missing variables SYSTEMROOT and WINDIR, which show up in a
# subsequent env. Cygwin also requires /bin to always be part of PATH,
# and attempts to unset or reduce PATH may cause execve to fail.
#
# For these reasons, it is more portable to grep that our desired changes
# took place, rather than comparing output of env over an entire environment.
if env | grep '^ENV_TEST' >/dev/null ; then
skip_test_ "environment has potential interference from ENV_TEST*"
fi
ENV_TEST1=a
export ENV_TEST1
: >out || framework_failure
env ENV_TEST2= > all || fail=1
grep '^ENV_TEST' all | LC_ALL=C sort >> out || framework_failure
env -u ENV_TEST1 ENV_TEST3=c > all || fail=1
grep '^ENV_TEST' all | LC_ALL=C sort >> out || framework_failure
env ENV_TEST1=b > all || fail=1
grep '^ENV_TEST' all | LC_ALL=C sort >> out || framework_failure
env ENV_TEST2= env > all || fail=1
grep '^ENV_TEST' all | LC_ALL=C sort >> out || framework_failure
env -u ENV_TEST1 ENV_TEST3=c env > all || fail=1
grep '^ENV_TEST' all | LC_ALL=C sort >> out || framework_failure
env ENV_TEST1=b env > all || fail=1
grep '^ENV_TEST' all | LC_ALL=C sort >> out || framework_failure
cat <<EOF >exp || framework_failure
ENV_TEST1=a
ENV_TEST2=
ENV_TEST3=c
ENV_TEST1=b
ENV_TEST1=a
ENV_TEST2=
ENV_TEST3=c
ENV_TEST1=b
EOF
compare exp out || fail=1
# PATH modifications affect exec.
mkdir unlikely_name || framework_failure
cat <<EOF > unlikely_name/also_unlikely || framework_failure
#!/bin/sh
echo pass
EOF
chmod +x unlikely_name/also_unlikely || framework_failure
env also_unlikely && fail=1
test x`PATH=$PATH:unlikely_name env also_unlikely` = xpass || fail=1
test x`env PATH="$PATH":unlikely_name also_unlikely` = xpass || fail=1
# Use -- to end arguments.
ln -s "$abs_top_builddir/src/echo" ./-i || framework_failure
case `PATH="$PATH:" env -i echo good` in
good) ;;
*) fail=1 ;;
esac
case `env -i -- PATH=. -i no-echo` in
no-echo) ;;
*) fail=1 ;;
esac
# FIXME - POSIX does not allow this; decide what we want to do
# cat <<EOF >./c=d || framework_failure
# #!/bin/sh
# echo pass
# EOF
# chmod +x c=d || framework_failure
# test "x`env c=d echo fail`" = xfail || fail=1
# test "x`env -- c=d echo fail`" = xpass || fail=1
# catch unsetenv failure, broken through coreutils 8.0
env -u a=b true && fail=1
test $? = 125 || fail=1
env -u '' true && fail=1
test $? = 125 || fail=1
Exit $fail
|
