1 files changed, 93 insertions, 0 deletions
diff --git a/tests/nice/nice.sh b/tests/nice/nice.sh
new file mode 100755
index 0000000..2df94f3
--- /dev/null
+++ b/tests/nice/nice.sh
@@ -0,0 +1,93 @@
+#!/bin/sh
+# Test "nice".
+
+# Copyright (C) 2002-2023 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 <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
+print_ver_ nice
+
+tests='
+0 empty 10
+1 -1 1
+2 -12 12
+3 -1:-2 2
+4 -n:1 1
+5 -n:1:-2 2
+6 -n:1:-+12 12
+7 -2:-n:1 1
+8 -2:-n:12 12
+9 -+1 1
+10 -+12 12
+11 -+1:-+12 12
+12 -n:+1 1
+13 --1:-2 2
+14 --1:-2:-13 13
+15 --1:-n:2 2
+16 --1:-n:2:-3 3
+17 --1:-n:2:-13 13
+18 -n:-1:-12 12
+19 --1:-12 12
+NA LAST NA
+'
+set $tests
+
+# Require that this test be run at 'nice' level 0.
+niceness=$(nice)
+if test "$niceness" = 0; then
+    : ok
+else
+  skip_ "this test must be run at nice level 0"
+fi
+
+while :; do
+  test_name=$1
+  args=$2
+  expected_result=$3
+  test $args = empty && args=''
+  test x$args = xLAST && break
+  args=$(echo x$args|tr : ' '|sed 's/^x//')
+  if test "$VERBOSE" = yes; then
+    #echo "testing \$(nice $args nice\) = $expected_result ..."
+    echo "test $test_name... " | tr -d '\n'
+  fi
+  test x$(nice $args nice 2> /dev/null) = x$expected_result \
+    && ok=ok || ok=FAIL fail=1
+  test "$VERBOSE" = yes && echo $ok
+  shift; shift; shift
+done
+
+# Test negative niceness - command must be run whether or not change happens.
+if test x$(nice -n -1 nice 2> /dev/null) = x0 ; then
+  # unprivileged user - warn about failure to change
+  nice -n -1 true 2> err || fail=1
+  compare /dev/null err && fail=1
+  mv err exp || framework_failure_
+  nice --1 true 2> err || fail=1
+  compare exp err || fail=1
+  # Failure to write advisory message is fatal.  Buggy through coreutils 8.0.
+  if test -w /dev/full && test -c /dev/full; then
+    returns_ 125 nice -n -1 nice > out 2> /dev/full || fail=1
+    compare /dev/null out || fail=1
+  fi
+else
+  # superuser - change succeeds
+  nice -n -1 nice 2> err || fail=1
+  compare /dev/null err || fail=1
+  test x$(nice -n -1 nice) = x-1 || fail=1
+  test x$(nice --1 nice) = x-1 || fail=1
+fi
+
+Exit $fail