diff -r 21c69dc3dbf7 -r 5a16bcb4105e testing2/danube_test2.sh
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/testing2/danube_test2.sh	Sat Feb 02 13:38:47 2019 +0000
@@ -0,0 +1,100 @@
+#!/bin/bash
+
+# to make the script fail safely
+set -euo pipefail
+
+
+out=${1:-output}
+
+echo "" > $out
+
+echo -e "Below is the feedback for your submission for the advanced part of danube.scala" >> $out
+echo -e "" >> $out
+
+
+# compilation tests
+
+function scala_compile {
+  (ulimit -t 30; JAVA_OPTS="-Xmx1g" scala -nc "$1" 2>> $out 1>> $out) 
+}
+
+# functional tests
+
+function scala_assert {
+  (ulimit -t 30; JAVA_OPTS="-Xmx1g" scala -nc -i "$1" "$2" -e "") #2> /dev/null 1> /dev/null)
+}
+
+# purity test
+
+function scala_vars {
+   (egrep '\bvar\b|\breturn\b|\.par|ListBuffer|mutable|new Array' "$1" 2> /dev/null 1> /dev/null)
+}
+
+
+# var, .par return, ListBuffer test
+#
+echo "danube.scala does not contain vars, returns etc?" >> $out
+
+if (scala_vars danube.scala)
+then
+  echo -e "  --> fail (make triple-sure your program conforms to the required format)" >> $out
+  tsts0=$(( 0 ))
+else
+  echo -e "  --> success" >> $out
+  tsts0=$(( 0 )) 
+fi
+
+### compilation test
+
+
+if  [ $tsts0 -eq 0 ]
+then 
+  echo "danube.scala runs?" >> $out
+
+  if (scala_compile danube.scala)
+  then
+    echo -e "  --> success" >> $out
+    tsts=$(( 0 ))
+  else
+    echo -e "  --> SCALA DID NOT RUN DANUBE.SCALA\n" >> $out  
+    tsts=$(( 1 )) 
+  fi
+else
+  tsts=$(( 1 ))     
+fi
+
+### danube groupById test
+
+if [ $tsts -eq 0 ]
+then
+  echo "  val ls = List((\"1\", \"a\"), (\"2\", \"a\"), (\"1\", \"c\"), (\"2\", \"a\"), (\"1\", \"c\"))" >> $out
+  echo "  groupById(ls, Map()) == Map(1 -> List(c, c, a), 2 -> List(a, a))" >> $out
+  echo "      where the order in the lists is unimportant" >> $out
+
+  if (scala_assert "danube.scala" "danube_test3.scala")
+  then
+      echo -e "  --> success" >> $out
+  else
+      echo -e "  --> \n ONE TEST FAILED\n" >> $out  
+  fi
+fi
+
+### danube processing tests
+
+#if [ $tsts -eq 0 ]
+#then
+#  echo "  val good_ratings = process_ratings(ratings)" >> $out
+#  echo "  val movie_names = process_movies(movies)" >> $out  
+#  echo "  " >> $out
+#  echo "  good_ratings.length == 48580 " >> $out
+#  echo "  movie_names.length == 9742 " >> $out
+#
+#  if (scala_assert "danube.scala" "danube_test2.scala") 
+#  then
+#    echo "  --> success" >> $out
+#  else
+#    echo "  --> one of the tests failed" >> $out
+#  fi
+#fi
+
+echo -e "\nFor other testcases please look at the template file." >> $out