testsuite: do not fail on systems without read permissions.

[Ralf Wildenhues]

I'm pushing this patch to the next branch to fix some test failures on
(file) systems that do not allow to remove read permissions.

Cheers,
Ralf

    testsuite: do not fail on systems without read permissions.
    
    * tests/instfail-info.test: Do not use the `non-root'
    requirement for testing whether files may be made unreadable;
    instead use `test -r' and skip the test if that still works.
    * tests/instfail-java.test: Likewise.
    * tests/instfail-libtool.test: Likewise.
    * tests/instfail.test: Likewise.
    * tests/instmany-mans.test: Likewise.
    * tests/instmany-python.test: Likewise.
    * tests/instmany.test: Likewise.
    * tests/parallel-tests9.test: Likewise.

diff --git a/tests/instfail-info.test b/tests/instfail-info.test
index ba2b5b6..f2590f4 100755
--- a/tests/instfail-info.test
+++ b/tests/instfail-info.test
@@ -19,9 +19,7 @@
 
 # This test has a few sister tests, for java, info, libtool.
 
-
-# non-root should catch 'chmod a-r'-challenged file systems.
-required='non-root makeinfo'
+required='makeinfo'
 . ./defs || Exit 1
 
 set -e
@@ -59,6 +57,7 @@ $MAKE uninstall
 for file in info1.info
 do
   chmod a-r $file
+  test ! -r $file || Exit 77
   $MAKE install-data && Exit 1
   chmod u+r $file
 done
diff --git a/tests/instfail-java.test b/tests/instfail-java.test
index 44b5971..5df8a6d 100755
--- a/tests/instfail-java.test
+++ b/tests/instfail-java.test
@@ -19,9 +19,6 @@
 
 # This is the java sister test of instfail.test.
 
-
-# non-root should catch 'chmod a-r'-challenged file systems.
-required='non-root'
 . ./defs || Exit 1
 
 set -e
@@ -59,6 +56,7 @@ $MAKE uninstall
 for file in java1.class
 do
   chmod a-r $file
+  test ! -r $file || Exit 77
   $MAKE install-data && Exit 1
   chmod u+r $file
 done
diff --git a/tests/instfail-libtool.test b/tests/instfail-libtool.test
index 1b6bd2b..d7a78ae 100755
--- a/tests/instfail-libtool.test
+++ b/tests/instfail-libtool.test
@@ -19,9 +19,7 @@
 
 # This is the libtool sister test of instfail.test
 
-
-# non-root should catch 'chmod a-r'-challenged file systems.
-required='non-root libtool libtoolize'
+required='libtool libtoolize'
 . ./defs || Exit 1
 
 set -e
@@ -65,6 +63,14 @@ $MAKE
 $MAKE install
 $MAKE uninstall
 
+for file in liblt1.la libltn1.la
+do
+  chmod a-r $file
+  test ! -r $file || Exit 77
+  $MAKE install-exec && Exit 1
+  chmod u+r $file
+done
+
 $MAKE unreadable-prog
 $MAKE install-exec && Exit 1
 $MAKE readable-prog
@@ -73,11 +79,4 @@ $MAKE unreadable-progn
 $MAKE install-exec && Exit 1
 $MAKE readable-progn
 
-for file in liblt1.la libltn1.la
-do
-  chmod a-r $file
-  $MAKE install-exec && Exit 1
-  chmod u+r $file
-done
-
 :
diff --git a/tests/instfail.test b/tests/instfail.test
index a09ca17..8b928cc 100755
--- a/tests/instfail.test
+++ b/tests/instfail.test
@@ -19,9 +19,6 @@
 
 # This test has a few sister tests, for java, info, libtool.
 
-
-# non-root should catch 'chmod a-r'-challenged file systems.
-required=non-root
 . ./defs || Exit 1
 
 set -e
@@ -70,6 +67,14 @@ $MAKE
 $MAKE install
 $MAKE uninstall
 
+for file in lib1.a libn1.a
+do
+  chmod a-r $file
+  test ! -r $file || Exit 77
+  $MAKE install-exec && Exit 1
+  chmod u+r $file
+done
+
 $MAKE unreadable-prog
 $MAKE install-exec && Exit 1
 $MAKE readable-prog
@@ -78,13 +83,6 @@ $MAKE unreadable-progn
 $MAKE install-exec && Exit 1
 $MAKE readable-progn
 
-for file in lib1.a libn1.a
-do
-  chmod a-r $file
-  $MAKE install-exec && Exit 1
-  chmod u+r $file
-done
-
 if grep "^EMACS = no" Makefile; then :; else
   for file in lisp1.el lisp1.elc
   do
diff --git a/tests/instmany-mans.test b/tests/instmany-mans.test
index 773fa76..c01d0da 100755
--- a/tests/instmany-mans.test
+++ b/tests/instmany-mans.test
@@ -18,7 +18,6 @@
 
 # This is the mans sister test of instmany.test, see there for details.
 
-required=non-root    # hope to catch 'chmod a-r'-challenged file systems.
 . ./defs || Exit 1
 
 set -e
@@ -137,6 +136,7 @@ srcdir=../../$subdir
 
 for file in page3.1 page$nfiles.1 npage3.1 npage$nfiles.1; do
   chmod a-r $srcdir/$file
+  test ! -r $srcdir/$file || Exit 77
   $MAKE install-man1 && Exit 1
   chmod u+r $srcdir/$file
 done
diff --git a/tests/instmany-python.test b/tests/instmany-python.test
index 9f65237..1d0b91b 100755
--- a/tests/instmany-python.test
+++ b/tests/instmany-python.test
@@ -18,7 +18,7 @@
 
 # This is the python sister test of instmany.test, see there for details.
 
-required='non-root python'
+required='python'
 . ./defs || Exit 1
 
 set -e
@@ -123,6 +123,7 @@ srcdir=../../$subdir
 for file in python3.py python$nfiles.py
 do
   chmod a-r $srcdir/$file
+  test ! -r $srcdir/$file || Exit 77
   $MAKE install && Exit 1
   chmod u+r $srcdir/$file
 done
diff --git a/tests/instmany.test b/tests/instmany.test
index 31176d7..a1409dc 100755
--- a/tests/instmany.test
+++ b/tests/instmany.test
@@ -26,8 +26,6 @@
 # For texinfos, we expand names using $(srcdir) in the first place.
 # Let's hope nobody uses many texinfos.
 
-
-required=non-root    # hope to catch 'chmod a-r'-challenged file systems.
 . ./defs || Exit 1
 
 set -e
@@ -153,6 +151,7 @@ srcdir=../../$subdir
 for file in script3 script$nfiles
 do
   chmod a-r $srcdir/$file
+  test ! -r $srcdir/$file || Exit 77
   $MAKE install-binSCRIPTS && Exit 1
   chmod u+r $srcdir/$file
 done
diff --git a/tests/parallel-tests9.test b/tests/parallel-tests9.test
index 6678920..e1f088b 100755
--- a/tests/parallel-tests9.test
+++ b/tests/parallel-tests9.test
@@ -68,9 +68,11 @@ grep baz.test stdout || Exit 1
 
 # If we cannot read the log file, then redo it as well.
 chmod a-r foo.log
-$MAKE recheck >stdout && { cat stdout; Exit 1; }
-cat stdout
-grep foo.test stdout || Exit 1
+if test ! -r foo.log; then
+   $MAKE recheck >stdout && { cat stdout; Exit 1; }
+   cat stdout
+   grep foo.test stdout || Exit 1
+fi
 
 # Ensure that recheck builds check_SCRIPTS, and that
 # recheck reruns nothing if check has not been run.