1 files changed, 43 insertions, 0 deletions
diff --git a/tests/misc/truncate-fail-diag.sh b/tests/misc/truncate-fail-diag.sh
new file mode 100755
index 0000000..b1fa185
--- /dev/null
+++ b/tests/misc/truncate-fail-diag.sh
@@ -0,0 +1,43 @@
+#!/bin/sh
+# make sure truncate gives reasonable diagnostics
+# Note open() checks for trailing '/' before checking for existence
+# open (".", O_CREAT & (O_WRONLY | O_RDWR), ...) -> EISDIR
+# open ("missing/", O_CREAT & (O_WRONLY | O_RDWR), ...) -> EISDIR
+# open ("missing/file", O_CREAT & (O_WRONLY | O_RDWR), ...) -> ENOENT
+
+# Copyright (C) 2008-2020 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/>.
+
+. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
+print_ver_ truncate
+skip_if_root_
+
+
+d1=no
+
+dir=$d1/such-dir
+truncate -s0 $dir > out 2>&1 && fail=1
+cat <<EOF > exp
+truncate: cannot open '$dir' for writing: No such file or directory
+EOF
+compare exp out || fail=1
+
+dir=$d1/
+truncate -s0 $dir > out 2>&1 && fail=1
+#The following can be returned at least
+#truncate: cannot open '$dir' for writing: Not a directory
+#truncate: cannot open '$dir' for writing: Is a directory
+
+Exit $fail