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Diffstat (limited to '')
| -rwxr-xr-x | tests/misc/printenv.sh | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/tests/misc/printenv.sh b/tests/misc/printenv.sh new file mode 100755 index 0000000..6cee5e7 --- /dev/null +++ b/tests/misc/printenv.sh @@ -0,0 +1,83 @@ +#!/bin/sh +# Verify behavior of printenv. + +# Copyright (C) 2009-2022 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_ printenv + +# Without arguments, printenv behaves like env. Some shells provide +# printenv as a builtin, so we must invoke it via "env". +# But beware of $_, set by many shells to the last command run. +# Also, filter out LD_PRELOAD, which is set when running under valgrind. +# Note the apparently redundant "env env": this is to ensure to get +# env's output the same way as that of printenv and works around a bug +# on aarch64 at least where libc's execvp reverses the order of the +# output. +env -- env | grep -Ev '^(_|LD_PRELOAD)=' > exp || framework_failure_ +env -- printenv | grep -Ev '^(_|LD_PRELOAD)=' > out || fail=1 +compare exp out || 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 printenv. +if env -- printenv | grep '^ENV_TEST' >/dev/null ; then + skip_ "environment has potential interference from ENV_TEST*" +fi + +# Printing a single variable's value. +returns_ 1 env -- printenv ENV_TEST > out || fail=1 +compare /dev/null out || fail=1 +echo a > exp || framework_failure_ +ENV_TEST=a env -- printenv ENV_TEST > out || fail=1 +compare exp out || fail=1 + +# Printing multiple variables. Order follows command line. +ENV_TEST1=a ENV_TEST2=b env -- printenv ENV_TEST2 ENV_TEST1 ENV_TEST2 > out \ + || fail=1 +ENV_TEST1=a ENV_TEST2=b env -- printenv ENV_TEST1 ENV_TEST2 >> out || fail=1 +cat <<EOF > exp || framework_failure_ +b +a +b +a +b +EOF +compare exp out || fail=1 + +# Exit status reflects missing variable, but remaining arguments processed. +export ENV_TEST1=a +returns_ 1 env -- printenv ENV_TEST2 ENV_TEST1 > out || fail=1 +returns_ 1 env -- printenv ENV_TEST1 ENV_TEST2 >> out || fail=1 +unset ENV_TEST1 +cat <<EOF > exp || framework_failure_ +a +a +EOF +compare exp out || fail=1 + +# Non-standard environment variable name. Shells won't create it, but +# env can, and printenv must be able to deal with it. +echo b > exp || framework_failure_ +env -- -a=b printenv -- -a > out || fail=1 +compare exp out || fail=1 + +# Silently reject invalid env-var names. +# Bug present through coreutils 8.0. +returns_ 1 env a=b=c printenv a=b > out || fail=1 +compare /dev/null out || fail=1 + +Exit $fail |