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coreutils/tests/du/deref.sh
Pádraig Brady 58cff8a009 tests: add extra protection against unexpected exits
Many tests use `program ... && fail=1` to ensure expected
error situations are indicated.  However that would mask
an unexpected exit (like a crash).  Therefore explicitly
check the expected exit code.
Note where error messages are also verified, the extra
protection is not added.

* tests/init.sh (returns_): A new helper function to
check the return code of a command, and used
throughout the tests.
* cfg.mk (sc_prohibit_and_fail_1): Add a syntax check
to avoid new instances of this issue.
2015-01-14 12:20:32 +00:00

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#!/bin/sh
# prior to coreutils-4.5.3, du -D didn't work in some cases
# Based on an example from Andreas Schwab and/or Michal Svec.
# Also, up to coreutils-8.5, du -L sometimes incorrectly
# counted the space of the followed symlinks.
# Copyright (C) 2002-2015 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 <http://www.gnu.org/licenses/>.
. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
print_ver_ du
mkdir -p a/sub || framework_failure_
ln -s a/sub slink || framework_failure_
touch b || framework_failure_
ln -s .. a/sub/dotdot || framework_failure_
ln -s nowhere dangle || framework_failure_
# This used to fail with the following diagnostic:
# du: 'b': No such file or directory
du -sD slink b > /dev/null 2>&1 || fail=1
# This used to fail to report the dangling symlink.
returns_ 1 du -L dangle > /dev/null 2>&1 || fail=1
# du -L used to mess up, either by counting the symlink's disk space itself
# (-L should follow symlinks, not count their space)
# or (briefly in July 2010) by omitting the entry for "a".
du_L_output=$(du -L a) || fail=1
du_lL_output=$(du -lL a) || fail=1
du_x_output=$(du --exclude=dotdot a) || fail=1
test "X$du_L_output" = "X$du_x_output" || fail=1
test "X$du_lL_output" = "X$du_x_output" || fail=1
Exit $fail