tests/util/sh/t_compexit.sh

   1 # $NetBSD: t_compexit.sh,v 1.1 2007/11/12 15:14:02 jmmv Exp $
   2 #
   3 # Copyright (c) 2007 The NetBSD Foundation, Inc.
   4 # All rights reserved.
   5 #
   6 # Redistribution and use in source and binary forms, with or without
   7 # modification, are permitted provided that the following conditions
   8 # are met:
   9 # 1. Redistributions of source code must retain the above copyright
  10 #    notice, this list of conditions and the following disclaimer.
  11 # 2. Redistributions in binary form must reproduce the above copyright
  12 #    notice, this list of conditions and the following disclaimer in the
  13 #    documentation and/or other materials provided with the distribution.
  14 #
  15 # THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  16 # ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  17 # TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  18 # PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  19 # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  20 # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  21 # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  22 # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  23 # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  24 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  25 # POSSIBILITY OF SUCH DAMAGE.
  26 #
  27
  28 # The standard
  29 # http://www.opengroup.org/onlinepubs/007904975/utilities/set.html
  30 # says:
  31 #
  32 # -e
  33 #
  34 # When this option is on, if a simple command fails for any of the
  35 # reasons listed in Consequences of Shell Errors or returns an exit
  36 # status value >0, and is not part of the compound list following a
  37 # while, until, or if keyword, and is not a part of an AND or OR list,
  38 # and is not a pipeline preceded by the !  reserved word, then the shell
  39 # shall immediately exit.
  40
  41 crud() {
  42         set -e
  43         for x in a
  44         do
  45                 BAR="foo"
  46                 false && echo true
  47                 echo mumble
  48         done
  49 }
  50
  51 atf_test_case set_e
  52 set_e_head() {
  53         atf_set "descr" "Tests that 'set -e' turns on error detection" \
  54                         "and that it behaves as defined by the standard"
  55 }
  56 set_e_body() {
  57         foo=`crud`
  58         atf_check_equal 'x$foo' 'xmumble'
  59 }
  60
  61 atf_init_test_cases() {
  62         atf_add_test_case set_e
  63 }