tests/nice/nice.sh

   1 #!/bin/sh
   2 # Test "nice".
   3
   4 # Copyright (C) 2002-2024 Free Software Foundation, Inc.
   5
   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.
  10
  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.
  15
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
  18
  19 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
  20 print_ver_ nice
  21
  22 tests='
  23 0 empty 10
  24 1 -1 1
  25 2 -12 12
  26 3 -1:-2 2
  27 4 -n:1 1
  28 5 -n:1:-2 2
  29 6 -n:1:-+12 12
  30 7 -2:-n:1 1
  31 8 -2:-n:12 12
  32 9 -+1 1
  33 10 -+12 12
  34 11 -+1:-+12 12
  35 12 -n:+1 1
  36 13 --1:-2 2
  37 14 --1:-2:-13 13
  38 15 --1:-n:2 2
  39 16 --1:-n:2:-3 3
  40 17 --1:-n:2:-13 13
  41 18 -n:-1:-12 12
  42 19 --1:-12 12
  43 NA LAST NA
  44 '
  45 set $tests
  46
  47 # Require that this test be run at 'nice' level 0.
  48 niceness=$(nice)
  49 if test "$niceness" = 0; then
  50     : ok
  51 else
  52   skip_ "this test must be run at nice level 0"
  53 fi
  54
  55 while :; do
  56   test_name=$1
  57   args=$2
  58   expected_result=$3
  59   test $args = empty && args=''
  60   test x$args = xLAST && break
  61   args=$(echo x$args|tr : ' '|sed 's/^x//')
  62   if test "$VERBOSE" = yes; then
  63     #echo "testing \$(nice $args nice\) = $expected_result ..."
  64     echo "test $test_name... " | tr -d '\n'
  65   fi
  66   test x$(nice $args nice 2> /dev/null) = x$expected_result \
  67     && ok=ok || ok=FAIL fail=1
  68   test "$VERBOSE" = yes && echo $ok
  69   shift; shift; shift
  70 done
  71
  72 # Test negative niceness - command must be run whether or not change happens.
  73 if test x$(nice -n -1 nice 2> /dev/null) = x0 ; then
  74   # unprivileged user - warn about failure to change
  75   nice -n -1 true 2> err || fail=1
  76   compare /dev/null err && fail=1
  77   mv err exp || framework_failure_
  78   nice --1 true 2> err || fail=1
  79   compare exp err || fail=1
  80   # Failure to write advisory message is fatal.  Buggy through coreutils 8.0.
  81   if test -w /dev/full && test -c /dev/full; then
  82     returns_ 125 nice -n -1 nice > out 2> /dev/full || fail=1
  83     compare /dev/null out || fail=1
  84   fi
  85 else
  86   # superuser - change succeeds
  87   nice -n -1 nice 2> err || fail=1
  88   compare /dev/null err || fail=1
  89   test x$(nice -n -1 nice) = x-1 || fail=1
  90   test x$(nice --1 nice) = x-1 || fail=1
  91 fi
  92
  93 Exit $fail