diff -r 41c4f7d85f59 -r 77c3bd7a0670 marking2/danube_test2.sh
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/marking2/danube_test2.sh	Mon Jan 28 12:49:19 2019 +0000
@@ -0,0 +1,156 @@
+#!/bin/bash
+
+# to make the script fail safely
+set -euo pipefail
+
+
+out=${1:-output}
+
+echo "" > $out
+
+echo "Below is the feedback and provisional marks for your submission" >> $out
+echo "for assignment 7 Part 3.  Please note all marks are provisional until" >> $out
+echo "ratified by the assessment board -- this is not an official" >> $out
+echo "results transcript." >> $out
+echo "" >> $out
+
+# marks for CW7 part 3
+marks=$(( 0 ))
+
+
+# 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?" | tee -a $out  
+
+if (scala_vars danube.scala)
+then
+  echo "  --> test failed" | tee -a $out  
+  tsts0=$(( 1 ))
+else
+  echo -e "  --> success" | tee -a $out  
+  tsts0=$(( 0 )) 
+fi
+
+### compilation test
+
+
+if  [ $tsts0 -eq 0 ]
+then 
+  echo "danube.scala runs?" | tee -a $out  
+
+  if (scala_compile danube.scala)
+  then
+    echo -e "  --> success" | tee -a $out  
+    tsts=$(( 0 ))
+  else
+    echo "  --> scala danube.scala did not run successfully" | tee -a $out  
+    tsts=$(( 1 )) 
+  fi
+else
+  tsts=$(( 1 ))     
+fi
+
+### danube groupById test
+
+if [ $tsts -eq 0 ]
+then
+  echo "  val ls1 = List((\"1\", \"a\"), (\"2\", \"a\"), (\"1\", \"c\"), (\"2\", \"a\"), (\"1\", \"c\"))" | tee -a $out
+  echo "  val ls2 = List((\"1\", \"a\"), (\"1\", \"b\"), (\"2\", \"x\"), (\"3\", \"a\"), (\"2\", \"y\"), (\"3\", \"c\"))" | tee -a $out
+  echo "  groupById(ls1, Map()) == Map(1 -> List(c, c, a), 2 -> List(a, a))" | tee -a $out
+  echo "  groupById(ls2, Map()) == Map(1 -> List(b, a), 2 -> List(x, y), 3 -> List(c, a))" | tee -a $out
+  echo "      where the order in the lists is unimportant" | tee -a $out
+  echo "  val ls3 = (1 to 1000).map(_.toString).toList" | tee -a $out
+  echo "  val ls4 = ls3 zip ls3.tail" | tee -a $out
+  echo "  val ls5 = ls4 ::: ls4.reverse" | tee -a $out
+  echo "  groupById(ls5, Map()) == Map(1 -> List(2,2), 2 -> List(3,3), ....)" | tee -a $out
+
+  if (scala_assert "danube.scala" "danube_test3.scala")
+  then
+      echo -e "  --> success" | tee -a $out
+      marks=$(( marks + 1 ))
+  else
+      echo -e "  --> test failed" | tee -a $out
+  fi
+fi
+
+### danube favourites tests
+
+if [ $tsts -eq 0 ]
+then
+  echo "  val good_ratings = process_ratings(ratings)" | tee -a $out
+  echo "  val ratings_map = groupById(good_ratings, Map())" | tee -a $out
+  echo "  favourites(ratings_map, \"912\").length  == 80 " | tee -a $out
+  echo "  favourites(ratings_map, \"858\").length  == 158 " | tee -a $out
+  echo "  favourites(ratings_map, \"260\").length  == 201 " | tee -a $out  
+
+  if (scala_assert "danube.scala" "danube_test4.scala") 
+  then
+    echo "  --> success" | tee -a $out
+    marks=$(( marks + 1 ))
+  else
+    echo "  --> one of the tests failed" | tee -a $out
+  fi
+fi
+
+### danube suggestions tests
+
+if [ $tsts -eq 0 ]
+then
+  echo "  val good_ratings = process_ratings(ratings)" | tee -a $out
+  echo "  val ratings_map = groupById(good_ratings, Map())" | tee -a $out
+  echo "  suggestions(ratings_map, \"912\").length  == 4110 " | tee -a $out
+  echo "  suggestions(ratings_map, \"858\").length  == 4883 " | tee -a $out
+  echo "  suggestions(ratings_map, \"260\").length  == 4970 " | tee -a $out  
+
+  if (scala_assert "danube.scala" "danube_test5.scala") 
+  then
+    echo "  --> success" | tee -a $out
+    marks=$(( marks + 1 ))
+  else
+    echo "  --> one of the tests failed" | tee -a $out
+  fi
+fi
+
+### danube recommendation tests
+
+if [ $tsts -eq 0 ]
+then
+  echo "  recommendations(ratings_map, movies_map, \"1\").length  == 2 " | tee -a $out
+  echo "  recommendations(ratings_map, movies_map, \"2\").length  == 2 " | tee -a $out
+  echo "  recommendations(ratings_map, movies_map, \"3\").length  == 2 " | tee -a $out
+  echo "  recommendations(ratings_map, movies_map, \"4\").length  == 0 " | tee -a $out
+  echo "  recommendations(ratings_map, movies_map, \"5\").length  == 2 " | tee -a $out
+
+  if (scala_assert "danube.scala" "danube_test6.scala") 
+  then
+    echo "  --> success" | tee -a $out
+    marks=$(( marks + 1 ))
+  else
+    echo "  --> one of the tests failed" | tee -a $out
+  fi
+fi
+
+
+## final marks
+echo "Overall mark for CW 7, Part 3" | tee -a $out
+echo "$marks" | tee -a $out
+