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..c739f65
--- /dev/null
+++ b/tests/misc/env.sh
@@ -0,0 +1,166 @@
+#!/bin/sh
+# Verify behavior of env.
+
+# Copyright (C) 2009-2020 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