[FYI] {maint} tests: avoid another failure of 'uninstall-fail.test' on Solaris

[Stefano Lattarini]

* tests/uninstall-fail.test: On Solaris 10, if `/bin/rm' is run
with the `-f' option, it doesn't print any error message when
failing to remove a file (due to e.g., "Permission denied").
Yikes.  Cater to this incompatibility, by relaxing the test when
a faulty `rm' is detected.
---
 ChangeLog                 |    9 +++++++++
 tests/uninstall-fail.test |   20 ++++++++++++++++++--
 2 files changed, 27 insertions(+), 2 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index d780496..f483818 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+2011-11-07  Stefano Lattarini  <address@hidden>
+
+       tests: avoid another failure of 'uninstall-fail.test' on Solaris
+       * tests/uninstall-fail.test: On Solaris 10, if `/bin/rm' is run
+       with the `-f' option, it doesn't print any error message when
+       failing to remove a file (due to e.g., "Permission denied").
+       Yikes.  Cater to this incompatibility, by relaxing the test when
+       a faulty `rm' is detected.
+
 2011-11-03  Zack Weinberg <address@hidden>  (tiny change)
            Stefano Lattarini  <address@hidden>
 
diff --git a/tests/uninstall-fail.test b/tests/uninstall-fail.test
index 14a843b..a4a058a 100755
--- a/tests/uninstall-fail.test
+++ b/tests/uninstall-fail.test
@@ -27,7 +27,19 @@ set -e
 mkdir d
 : > d/f
 chmod a-w d || skip "cannot make directories unwritable"
-rm -f d/f && skip_ "can delete files from unwritable directories"
+
+# On Solaris 10, if `/bin/rm' is run with the `-f' option, it doesn't
+# print any error message when failing to remove a file (due to e.g.,
+# "Permission denied").  Yikes.  We'll cater to this incompatibility
+# by relaxing a test below if a faulty `rm' is detected.
+st=0; rm -f d/f 2>stderr || st=$?
+cat stderr >&2
+test $st -gt 0 || skip_ "can delete files from unwritable directories"
+if grep 'rm:' stderr; then
+  rm_f_is_silent_on_error=no
+else
+  rm_f_is_silent_on_error=yes
+fi
 
 cat >> configure.in << 'END'
 AC_OUTPUT
@@ -53,7 +65,11 @@ mkdir $inst $inst/share
 chmod a-w $inst/share
 $MAKE uninstall >output 2>&1 && { cat output; Exit 1; }
 cat output
-grep "rm: .*foobar\.txt" output
+if test $rm_f_is_silent_on_failure = yes; then
+  : "rm -f" is silent on errors, skip the grepping of make output
+else
+  grep "rm: .*foobar\.txt" output
+fi
 
 chmod a-rwx $inst/share
 (cd $inst/share) && skip_ "cannot make directories fully unreadable"
-- 
1.7.2.3