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# Verify behavior of env -0 and printenv -0.
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# Copyright (C) 2009-2012 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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. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
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print_ver_ env printenv
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# POSIX is clear that environ may, but need not be, sorted.
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# Environment variable values may contain newlines, which cannot be
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# observed by merely inspecting output from env.
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# Cygwin requires a minimal environment to launch new processes: execve
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# adds missing variables SYSTEMROOT and WINDIR, which show up in a
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# subsequent env. Cygwin also requires /bin to always be part of PATH,
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# and attempts to unset or reduce PATH may cause execve to fail.
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# For these reasons, it is better to compare two outputs from distinct
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# programs that should be the same, rather than building an exp file.
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env -i PATH="$PATH" env -0 > out1 || fail=1
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env -i PATH="$PATH" printenv -0 > out2 || fail=1
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compare out1 out2 || fail=1
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env -i PATH="$PATH" env --null > out2 || fail=1
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compare out1 out2 || fail=1
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env -i PATH="$PATH" printenv --null > out2 || fail=1
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compare out1 out2 || fail=1
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# env -0 does not work if a command is specified.
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test $? = 125 || fail=1
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# Test env -0 on a one-variable environment.
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printf 'a=b\nc=\0' > exp || framework_failure_
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env -i -0 "$(printf 'a=b\nc=')" > out || fail=1
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compare exp out || fail=1
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# Test printenv -0 on particular values.
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printf 'b\nc=\0' > exp || framework_failure_
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env "$(printf 'a=b\nc=')" printenv -0 a > out || fail=1
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compare exp out || fail=1
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env -u a printenv -0 a > out
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env -u b "$(printf 'a=b\nc=')" printenv -0 b a > out
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compare exp out || fail=1
added
removed
tests/misc/env-null.sh
