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Diffstat (limited to 'tests/misc/env.sh')
| -rwxr-xr-x | tests/misc/env.sh | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/tests/misc/env.sh b/tests/misc/env.sh new file mode 100755 index 0000000..8a0fbd4 --- /dev/null +++ b/tests/misc/env.sh @@ -0,0 +1,166 @@ +#!/bin/sh +# Verify behavior of env. + +# 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 +# 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 <https://www.gnu.org/licenses/>. + + +. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src +print_ver_ env pwd + +# A simple shebang program to call "echo" from symlinks like "./-u" or "./--". +echo "#!$abs_top_builddir/src/echo simple_echo" > simple_echo \ + || framework_failure_ +chmod a+x simple_echo || framework_failure_ + +# Verify we can run the shebang which is not the case if +# there are spaces in $abs_top_builddir. +./simple_echo || skip_ "Error running simple_echo script" + +# Verify clearing the environment +a=1 +export a +env - > out || fail=1 +compare /dev/null out || fail=1 +env -i > out || fail=1 +compare /dev/null out || fail=1 +env -u a -i -u a -- > out || fail=1 +compare /dev/null 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. +returns_ 125 env --- || fail=1 # unknown option +returns_ 125 env -u || fail=1 # missing option argument +returns_ 2 env sh -c 'exit 2' || fail=1 # exit status propagation +returns_ 126 env . || fail=1 # invalid command +returns_ 127 env no_such || fail=1 # no such command + +# 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_ "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_ +returns_ 127 env also_unlikely || fail=1 +test x$(PATH=$PATH:unlikely_name env also_unlikely) = xpass || fail=1 +test x$(env PATH="$PATH":unlikely_name also_unlikely) = xpass || fail=1 + +# Explicitly put . on the PATH for the rest of this test. +PATH=$PATH: +export PATH + +# Use -- to end options (but not variable assignments). +# On some systems, execve("-i") invokes a shebang script ./-i on PATH as +# '/bin/sh -i', rather than '/bin/sh -- -i', which doesn't do what we want. +# Avoid the issue by using a shebang to 'echo' passing a second parameter +# before the '-i'. See the definition of simple_echo before. +# Test -u, rather than -i, to minimize PATH problems. +ln -s "simple_echo" ./-u || framework_failure_ +case $(env -u echo echo good) in + good) ;; + *) fail=1 ;; +esac +case $(env -u echo -- echo good) in + good) ;; + *) fail=1 ;; +esac +case $(env -- -u pass) in + *pass) ;; + *) fail=1 ;; +esac + +# After options have ended, the first argument not containing = is a program. +returns_ 127 env a=b -- true || fail=1 +ln -s "simple_echo" ./-- || framework_failure_ +case $(env a=b -- true || echo fail) in + *true) ;; + *) fail=1 ;; +esac + +# No way to directly invoke program name containing =. +cat <<EOF >./c=d || framework_failure_ +#!/bin/sh +echo pass +EOF +chmod +x c=d || framework_failure_ +test "x$(env c=d echo fail)" = xfail || fail=1 +test "x$(env -- c=d echo fail)" = xfail || fail=1 +test "x$(env ./c=d echo fail)" = xfail || fail=1 +test "x$(env sh -c 'exec "$@"' sh c=d echo fail)" = xpass || fail=1 +test "x$(sh -c '\c=d echo fail')" = xpass && #dash 0.5.4 fails so check first + { test "x$(env sh -c '\c=d echo fail')" = xpass || fail=1; } + +# catch unsetenv failure, broken through coreutils 8.0 +returns_ 125 env -u a=b true || fail=1 +returns_ 125 env -u '' true || fail=1 + +# Verify changing directory. +mkdir empty || framework_failure_ +returns_ 125 env --chdir=empty/nonexistent true || fail=1 +returns_ 125 env -C empty 2>out || fail=1 +printf '%s\n' \ + 'env: must specify command with --chdir (-C)' \ + "Try 'env --help' for more information." > exp || + framework_failure_ +compare exp out || fail=1 +exp=$(cd empty && env pwd) || framework_failure_ +got=$(env --chdir=empty pwd) || fail=1 +test "$exp" = "$got" || fail=1 + +Exit $fail |