tests: slightly stricter checks in t/cxx-demo.sh

This is a follow-up to the commit fixing automake bug#14493.

* t/cxx-demo.sh: Also check that the built program returns the
correct (i.e., zero) exit status when run.  And improve comments
a little while at it.

Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>

diff --git a/t/cxx-demo.sh b/t/cxx-demo.sh
index f872c43..97a46ce 100644 (file)
--- a/t/cxx-demo.sh
+++ b/t/cxx-demo.sh
@@ -165,7 +165,11 @@ END
     Good morning, work.
 END
   for p in play work; do
-    # Strip CR characters catering to MinGW programs on MSYS.
+    # The program must run correctly (exit status = 0).
+    ./$p
+    # And it must have the expected output.  Note that we strip extra
+    # CR characters (if any), to cater to MinGW programs on MSYS.
+    # See automake bug#14493.
     ./$p | tr -d '\015' > got.$p || { cat got.$p; exit 1; }
     cat exp.$p
     cat got.$p