2 # Verify behavior of env -0 and printenv -0.
4 # Copyright (C) 2009 Free Software Foundation, Inc.
6 # This program is free software: you can redistribute it and/or modify
7 # it under the terms of the GNU General Public License as published by
8 # the Free Software Foundation, either version 3 of the License, or
9 # (at your option) any later version.
11 # This program is distributed in the hope that it will be useful,
12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 # GNU General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with this program. If not, see <http://www.gnu.org/licenses/>.
20 if test "$VERBOSE" = yes; then
23 env -- printenv --version
29 # POSIX is clear that environ may, but need not be, sorted.
30 # Environment variable values may contain newlines, which cannot be
31 # observed by merely inspecting output from env.
32 # Cygwin requires a minimal environment to launch new processes: execve
33 # adds missing variables SYSTEMROOT and WINDIR, which show up in a
34 # subsequent env. Cygwin also requires /bin to always be part of PATH,
35 # and attempts to unset or reduce PATH may cause execve to fail.
37 # For these reasons, it is better to compare two outputs from distinct
38 # programs that should be the same, rather than building an exp file.
39 env -i PATH="$PATH" env -0 > out1 || fail=1
40 env -i PATH="$PATH" printenv -0 > out2 || fail=1
41 compare out1 out2 || fail=1
42 env -i PATH="$PATH" env --null > out2 || fail=1
43 compare out1 out2 || fail=1
44 env -i PATH="$PATH" printenv --null > out2 || fail=1
45 compare out1 out2 || fail=1
47 # env -0 does not work if a command is specified.
49 test $? = 125 || fail=1
52 # Test env -0 on a one-variable environment.
53 printf 'a=b\nc=\0' > exp || framework_failure
54 env -i -0 "$(printf 'a=b\nc=')" > out || fail=1
55 compare exp out || fail=1
57 # Test printenv -0 on particular values.
58 printf 'b\nc=\0' > exp || framework_failure
59 env "$(printf 'a=b\nc=')" printenv -0 a > out || fail=1
60 compare exp out || fail=1
61 env -u a printenv -0 a > out
64 env -u b "$(printf 'a=b\nc=')" printenv -0 b a > out
66 compare exp out || fail=1