diff -r 9ac77b4b42a7 -r 7268c66cf77c main_testing2/danube_test.sh
--- a/main_testing2/danube_test.sh	Mon Jan 10 13:51:59 2022 +0000
+++ b/main_testing2/danube_test.sh	Thu Jan 13 12:34:43 2022 +0000
@@ -4,7 +4,11 @@
 set -euo pipefail
 
 
-out=${1:-output}
+
+scalafile=${1:-danube.scala}
+out=${2:-output}
+
+
 
 echo "" > $out
 
@@ -36,7 +40,7 @@
 
 echo "danube.scala runs?" >> $out
 
-if (scala_compile danube.scala)
+if (scala_compile $scalafile)
 then
     echo "  --> passed" >> $out
     tsts=$(( 0 ))
@@ -52,7 +56,7 @@
 then
     echo "danube.scala does not contain vars, returns etc?" >> $out
 
-    if (scala_vars danube.scala)
+    if (scala_vars $scalafile)
     then
 	echo "  --> FAIL (make triple-sure your program conforms to the required format)" >> $out
 	tsts=$(( 1 ))
@@ -71,7 +75,7 @@
   echo "  val movies_url = \"\"\"https://nms.kcl.ac.uk/christian.urban/movies.csv\"\"\"" >> $out
   echo "  get_csv_url(movies_url).length == 9742" >> $out
 
-  if (scala_assert "danube.scala" "danube_test1.scala")
+  if (scala_assert $scalafile "danube_test1.scala")
   then
     echo -e "  --> success" >> $out
   else
@@ -88,8 +92,11 @@
   echo "  " >> $out
   echo "  good_ratings.length == 48580 " >> $out
   echo "  movie_names.length == 9742 " >> $out
+  echo "  " >> $out
+  echo "  val r_elems = List((\"1\",\"1\"), (\"1\",\"3\"), (\"1\",\"6\"), (\"1\",\"47\")) " >> $out
+  echo "  r_elems.forall(good_ratings.contains(_)) == true" >> $out
 
-  if (scala_assert "danube.scala" "danube_test2.scala") 
+  if (scala_assert $scalafile "danube_test2.scala") 
   then
     echo -e "  --> success" >> $out
   else
@@ -111,7 +118,7 @@
   echo -e  "  val ls5 = ls4 ::: ls4.reverse" >> $out
   echo -e  "  groupById(ls5, Map()) == Map(1 -> List(2,2), 2 -> List(3,3), ....)" >> $out
 
-  if (scala_assert "danube.scala" "danube_test3.scala")
+  if (scala_assert $scalafile "danube_test3.scala")
   then
       echo -e "  --> success" >> $out
   else
@@ -129,7 +136,7 @@
   echo -e  "  favourites(ratings_map, \"858\").length  == 158 " >> $out
   echo -e  "  favourites(ratings_map, \"260\").length  == 201 " >> $out  
 
-  if (scala_assert "danube.scala" "danube_test4.scala") 
+  if (scala_assert $scalafile "danube_test4.scala") 
   then
     echo -e  "  --> success" >> $out
   else
@@ -147,7 +154,7 @@
   echo -e  "  suggestions(ratings_map, \"858\").length  == 4883 " >> $out
   echo -e  "  suggestions(ratings_map, \"260\").length  == 4970 " >> $out  
 
-  if (scala_assert "danube.scala" "danube_test5.scala") 
+  if (scala_assert $scalafile "danube_test5.scala") 
   then
     echo -e  "  --> success" >> $out
   else
@@ -165,7 +172,7 @@
   echo -e  "  recommendations(ratings_map, movies_map, \"4\").length  == 0 " >> $out
   echo -e  "  recommendations(ratings_map, movies_map, \"5\").length  == 2 " >> $out
 
-  if (scala_assert "danube.scala" "danube_test6.scala") 
+  if (scala_assert $scalafile "danube_test6.scala") 
   then
     echo -e  "  --> success" >> $out
   else