1 files changed, 44 insertions, 0 deletions
diff --git a/tests/df/total-unprocessed.sh b/tests/df/total-unprocessed.sh
new file mode 100755
index 0000000..696234a
--- /dev/null
+++ b/tests/df/total-unprocessed.sh
@@ -0,0 +1,44 @@
+#!/bin/sh
+# Ensure that df exits non-Zero and writes an error message when
+# --total is used but no file system has been processed.
+
+# Copyright (C) 2012-2022 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/>.
+
+. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
+print_ver_ df
+require_mount_list_
+
+cat <<\EOF > exp || framework_failure_
+df: no file systems processed
+EOF
+
+# Check we exit with non-Zero.
+# Note we don't check when the file system can't be determined
+# as -t filtering is not applied in that case.
+if test "$(df --output=fstype . | tail -n1)" != '-'; then
+  df -t _non_existent_fstype_ --total . 2>out && fail=1
+  compare exp out || fail=1
+fi
+
+cat <<\EOF > exp || framework_failure_
+df: _does_not_exist_: No such file or directory
+EOF
+
+# Ensure that df writes the error message also in the following case.
+df --total _does_not_exist_ 2>out && fail=1
+compare exp out || fail=1
+
+Exit $fail