diff -r c40f364d87eb -r b4def82f3f9f testing/collatz_test
--- a/testing/collatz_test	Sun Nov 05 12:56:55 2017 +0000
+++ b/testing/collatz_test	Tue Nov 07 13:08:18 2017 +0000
@@ -15,7 +15,7 @@
 # compilation tests
 
 function scala_compile {
-  (ulimit -t 30 -m 1024000 ; scala "$1" 2> $out 1> $out) 
+  (ulimit -t 30 -m 1024000 ; scala "$1" 2>> $out 1>> $out) 
 }
 
 # functional tests
@@ -40,7 +40,7 @@
   echo "  --> fail" >> $out
   tsts0=$(( 1 ))
 else
-  echo "  --> yes" >> $out
+  echo "  --> success" >> $out
   tsts0=$(( 0 )) 
 fi
 
@@ -67,6 +67,7 @@
 
 if [ $tsts -eq 0 ]
 then
+  echo "collatz.scala tests:" >> $out
   echo "  collatz(1) == 0,1 or 4" >> $out
   echo "  collatz(6) == 9" >> $out
   echo "  collatz(9) == 20" >> $out
@@ -83,12 +84,12 @@
 
 if [ $tsts -eq 0 ]
 then
-  echo "  collatz_max(10) == (9, 20)" >> $out
-  echo "  collatz_max(100) == (97, 119)" >> $out
-  echo "  collatz_max(1000) == (871, 179)" >> $out
-  echo "  collatz_max(10000) == (6171, 262)" >> $out
-  echo "  collatz_max(100000) == (77031, 351)" >> $out
-  echo "  collatz_max(1000000) == (837799, 525)" >> $out
+  echo "  collatz_max(10) == (20, 9)" >> $out
+  echo "  collatz_max(100) == (119, 97)" >> $out
+  echo "  collatz_max(1000) == (179, 871)" >> $out
+  echo "  collatz_max(10000) == (262, 6171)" >> $out
+  echo "  collatz_max(100000) == (351, 77031)" >> $out
+  echo "  collatz_max(1000000) == (525, 837799)" >> $out
 
   if (scala_assert "collatz.scala" "collatz_test2.scala") 
   then