tests: ln: verify that -f and -i override each other

Identified here:
<https://github.com/uutils/coreutils/pull/11129>

* tests/ln/misc.sh: Add the check.
 https://github.com/coreutils/coreutils/pull/199

diff --git a/tests/ln/misc.sh b/tests/ln/misc.sh
index 3e46c0899cdae9db5b2e81f4c4eaa0d72d024f06..612cc4bc738d21ebe62cb8ad884ff70c7edeebdd 100755 (executable)
--- a/tests/ln/misc.sh
+++ b/tests/ln/misc.sh
@@ -127,6 +127,27 @@ done
 # Purify probably would have done so.
 ln foo '' 2> /dev/null
 
+# ===================================================
+# Verify that -f and -i override each other, last one wins.
+
+# -sif: force should win (no prompt, overwrite)
+rm -f a b
+touch a b || framework_failure_
+ln -sif a b || fail=1
+test -L b || fail=1
+
+# -sfi: interactive should win; answering "n" should keep b unchanged
+rm -f a b
+touch a b || framework_failure_
+echo n | ln -sfi a b || :
+test -L b && fail=1
+
+# -sfi: interactive should win; answering "y" should create symlink
+rm -f a b
+touch a b || framework_failure_
+echo y | ln -sfi a b || fail=1
+test -L b || fail=1
+
 # ===================================================
 
 Exit $fail