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git://git.sv.gnu.org/coreutils.git
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Eric Blake
0f3f6bf6bf
* doc/coreutils.texi (env invocation): Mention that PATH is modified prior to exec. * tests/misc/env: Test this.
133 lines
4.0 KiB
Bash
Executable File
133 lines
4.0 KiB
Bash
Executable File
#!/bin/sh
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# Verify behavior of env.
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# Copyright (C) 2009 Free Software Foundation, Inc.
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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if test "$VERBOSE" = yes; then
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set -x
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env --version
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fi
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. $srcdir/test-lib.sh
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fail=0
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# Verify clearing the environment
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a=1
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export a
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env - > out || fail=1
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test -s out && fail=1
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env -i > out || fail=1
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test -s out && fail=1
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env -u a -i -u a -- > out || fail=1
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test -s out && fail=1
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env -i -- a=b > out || fail=1
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echo a=b > exp || framework_failure
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compare exp out || fail=1
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# These tests verify exact status of internal failure.
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env --- # unknown option
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test $? = 125 || fail=1
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env -u # missing option argument
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test $? = 125 || fail=1
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env sh -c 'exit 2' # exit status propagation
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test $? = 2 || fail=2
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env . # invalid command
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test $? = 126 || fail=1
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env no_such # no such command
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test $? = 127 || fail=1
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# POSIX is clear that environ may, but need not be, sorted.
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# Environment variable values may contain newlines, which cannot be
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# observed by merely inspecting output from env.
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# Cygwin requires a minimal environment to launch new processes: execve
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# adds missing variables SYSTEMROOT and WINDIR, which show up in a
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# subsequent env. Cygwin also requires /bin to always be part of PATH,
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# and attempts to unset or reduce PATH may cause execve to fail.
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#
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# For these reasons, it is more portable to grep that our desired changes
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# took place, rather than comparing output of env over an entire environment.
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if env | grep '^ENV_TEST' >/dev/null ; then
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skip_test_ "environment has potential interference from ENV_TEST*"
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fi
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ENV_TEST1=a
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export ENV_TEST1
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: >out || framework_failure
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env ENV_TEST2= > all || fail=1
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grep '^ENV_TEST' all | LC_ALL=C sort >> out || framework_failure
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env -u ENV_TEST1 ENV_TEST3=c > all || fail=1
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grep '^ENV_TEST' all | LC_ALL=C sort >> out || framework_failure
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env ENV_TEST1=b > all || fail=1
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grep '^ENV_TEST' all | LC_ALL=C sort >> out || framework_failure
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env ENV_TEST2= env > all || fail=1
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grep '^ENV_TEST' all | LC_ALL=C sort >> out || framework_failure
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env -u ENV_TEST1 ENV_TEST3=c env > all || fail=1
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grep '^ENV_TEST' all | LC_ALL=C sort >> out || framework_failure
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env ENV_TEST1=b env > all || fail=1
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grep '^ENV_TEST' all | LC_ALL=C sort >> out || framework_failure
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cat <<EOF >exp || framework_failure
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ENV_TEST1=a
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ENV_TEST2=
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ENV_TEST3=c
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ENV_TEST1=b
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ENV_TEST1=a
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ENV_TEST2=
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ENV_TEST3=c
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ENV_TEST1=b
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EOF
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compare exp out || fail=1
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# PATH modifications affect exec.
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mkdir unlikely_name || framework_failure
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cat <<EOF > unlikely_name/also_unlikely || framework_failure
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#!/bin/sh
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echo pass
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EOF
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chmod +x unlikely_name/also_unlikely || framework_failure
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env also_unlikely && fail=1
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test x`PATH=$PATH:unlikely_name env also_unlikely` = xpass || fail=1
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test x`env PATH="$PATH":unlikely_name also_unlikely` = xpass || fail=1
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# Use -- to end arguments.
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ln -s "$abs_top_builddir/src/echo" ./-i || framework_failure
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case `PATH="$PATH:" env -i echo good` in
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good) ;;
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*) fail=1 ;;
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esac
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case `env -i -- PATH=. -i no-echo` in
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no-echo) ;;
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*) fail=1 ;;
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esac
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# FIXME - POSIX does not allow this; decide what we want to do
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# cat <<EOF >./c=d || framework_failure
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# #!/bin/sh
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# echo pass
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# EOF
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# chmod +x c=d || framework_failure
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# test "x`env c=d echo fail`" = xfail || fail=1
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# test "x`env -- c=d echo fail`" = xpass || fail=1
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# catch unsetenv failure, broken through coreutils 8.0
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env -u a=b true && fail=1
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test $? = 125 || fail=1
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env -u '' true && fail=1
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test $? = 125 || fail=1
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Exit $fail
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