tests: augment new ls --zero test cases

* tests/ls/zero-option.sh: Check for the disabled, disallowed,
and allowed option combinations.

diff --git a/tests/ls/zero-option.sh b/tests/ls/zero-option.sh
index a6883917f85c9577eea4033eb15a6c29d9580f0c..5564f3b77178658429cd6ed7711e63b2885f85f1 100755 (executable)
--- a/tests/ls/zero-option.sh
+++ b/tests/ls/zero-option.sh
@@ -21,7 +21,15 @@ print_ver_ ls
 
 mkdir dir && touch dir/a dir/b dir/cc || framework_failure_
 
-LC_ALL=C ls --zero dir >out || fail=1
+allowed_options='-l'  # explict -l with --zero is allowed
+LC_ALL=C ls $allowed_options --zero dir >out || fail=1
+grep '^total' out || fail=1  # Ensure -l honored
+
+disallowed_options='-l --dired'  # dired only enabled with -l
+returns_ 2 ls $disallowed_options --zero dir || fail=1
+
+disabled_options='--color=always -x -m -C -Q -q'
+LC_ALL=C ls $disabled_options --zero dir >out || fail=1
 tr '\n' '\0' <<EOF >exp
 a
 b