tests: ensure all utilities that read input diagnose errors

* tests/misc/read-errors.sh: Add a new test.
* tests/misc/date-f.sh: Remove unneeded test.
* tests/misc/dircolors.sh: Likewise.
* tests/local.mk: Reference new test, and dereference removed ones.

tests/local.mk

@@ -173,6 +173,7 @@ all_tests =					\
   tests/cp/link-heap.sh				\
   tests/cp/no-ctx.sh				\
   tests/misc/tty-eof.pl				\
+  tests/misc/read-errors.sh			\
   tests/tail-2/inotify-hash-abuse.sh		\
   tests/tail-2/inotify-hash-abuse2.sh		\
   tests/tail-2/F-vs-missing.sh			\
@@ -302,11 +303,9 @@ all_tests =					\
   tests/misc/csplit-io-err.sh			\
   tests/misc/csplit-suppress-matched.pl		\
   tests/misc/date-debug.sh			\
-  tests/misc/date-f.sh				\
   tests/misc/date-sec.sh			\
   tests/misc/date-tz.sh				\
   tests/misc/dircolors.pl			\
-  tests/misc/dircolors.sh			\
   tests/misc/dirname.pl				\
   tests/misc/env-null.sh			\
   tests/misc/env-S.pl				\

tests/misc/read-errors.sh

@@ -0,0 +1,79 @@
+#!/bin/sh
+# Make sure all of these programs diagnose read errors
+
+# Copyright (C) 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
+
+! cat . >/dev/null 2>&1 || skip_ "Need unreadable directories"
+
+echo "\
+basenc --base32 .
+basenc -d --base64 .
+cat .
+cksum -a blake2b .
+cksum -a bsd .
+cksum -a crc .
+cksum -a md5 .
+cksum -a sha1 .
+cksum -a sha224 .
+cksum -a sha256 .
+cksum -a sha384 .
+cksum -a sha512 .
+cksum -a sm3 .
+cksum -a sysv .
+comm . .
+csplit . 1
+cut -b1 .
+date -f .
+dd if=.
+dircolors .
+expand .
+factor < .
+fmt .
+fold .
+head .
+join . .
+nl .
+numfmt < .
+od .
+paste .
+pr .
+ptx .
+shuf .
+sort .
+split .
+tac .
+tail .
+tee < .
+tr 1 1 < .
+tsort .
+unexpand .
+uniq .
+wc .
+" |
+sort -k 1b,1 > all_readers || framework_failure_
+
+printf '%s\n' $built_programs |
+sort -k 1b,1 > built_programs || framework_failure_
+
+join all_readers built_programs > built_readers || framework_failure_
+
+while read reader; do
+  eval $reader >/dev/null && { fail=1; echo "$reader: exited with 0" >&2; }
+done < built_readers
+
+Exit $fail