New test for the just-fixed bug in lib/modechange.c.

diff --git a/tests/chmod/equals b/tests/chmod/equals
new file mode 100755 (executable)
index 0000000..82667e0
--- /dev/null
+++ b/tests/chmod/equals
@@ -0,0 +1,41 @@
+#!/bin/sh
+# Make sure chmod mode arguments of the form A=B work properly.
+# Before fileutils-4.1.2, some of them didn't.
+
+if test "$VERBOSE" = yes; then
+  set -x
+  chmod --version
+fi
+
+pwd=`pwd`
+tmp=equals.$$
+trap 'status=$?; cd $pwd; rm -rf $tmp && exit $status' 0
+trap '(exit $?); exit' 1 2 13 15
+
+framework_failure=0
+mkdir $tmp || framework_failure=1
+cd $tmp || framework_failure=1
+touch f || framework_failure=1
+
+if test $framework_failure = 1; then
+  echo '$0: failure in testing framework' 1>&2
+  (exit 1); exit
+fi
+
+fail=0
+
+expected_u=-rwx------
+expected_g=----rwx---
+expected_o=-------rwx
+
+for src in u g o; do
+  for dest in u g o; do
+    test $dest = $src && continue
+    chmod a=,$src=rwx,$dest=$src,$src= f || fail=1
+    set _ `ls -l f`; shift; actual_perms=$1
+    expected_perms=`eval 'echo \$expected_'$dest`
+    test "$actual_perms" = "$expected_perms" || fail=1
+  done
+done
+
+(exit $fail); exit