1 files changed, 44 insertions, 0 deletions
diff --git a/tests/nproc/nproc-positive.sh b/tests/nproc/nproc-positive.sh
new file mode 100755
index 0000000..d4936a1
--- /dev/null
+++ b/tests/nproc/nproc-positive.sh
@@ -0,0 +1,44 @@
+#!/bin/sh
+# Ensure that nproc prints a number > 0
+
+# Copyright (C) 2009-2023 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/>.
+
+. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
+print_ver_ nproc
+
+for mode in --all ''; do
+    procs=$(nproc $mode)
+    test "$procs" -gt 0 || fail=1
+done
+
+for i in -1000 0 1 1000; do
+    procs=$(OMP_NUM_THREADS=$i nproc)
+    test "$procs" -gt 0 || fail=1
+done
+
+for i in 0 ' 1' 1000; do
+    procs=$(nproc --ignore="$i")
+    test "$procs" -gt 0 || fail=1
+done
+
+for i in -1 N; do
+    returns_ 1 nproc --ignore=$i || fail=1
+done
+
+procs=$(OMP_NUM_THREADS=42 nproc --ignore=40)
+test "$procs" -eq 2 || fail=1
+
+Exit $fail