diff -r 34feeb53c0ba -r 0315d9983cd0 Attic/danube_test.sh
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Attic/danube_test.sh	Sat Mar 11 22:01:53 2023 +0000
@@ -0,0 +1,213 @@
+#!/bin/zsh
+
+# to make the script fail safely
+set -euo pipefail
+
+
+out=${1:-output}
+
+echo "" > $out
+
+echo -e `date` >> $out
+echo -e  "" >> $out
+echo -e  "Below is the feedback and provisional marks for your submission" >> $out
+echo -e  "of the Main Part 2 (Scala).  Please note all marks are provisional until" >> $out
+echo -e  "ratified by the assessment board -- this is not an official" >> $out
+echo -e  "results transcript." >> $out
+echo -e  "" >> $out
+
+# marks for core CW7
+marks=$(( 0.0 ))
+
+
+# compilation tests
+
+function scala_compile {
+  (ulimit -t 30; JAVA_OPTS="-Xmx1g" scala -Xprint:parser "$1" 2> c$out 1> c$out)
+}
+
+# functional tests
+
+function scala_assert {
+  (ulimit -t 30; JAVA_OPTS="-Xmx1g" scala -i "$1" -- "$2" -e "" 2> /dev/null 1> /dev/null)
+}
+
+function scala_assert_thirty {
+  (ulimit -t 40; JAVA_OPTS="-Xmx1g" scala -i "$1" -- "$2" -e "" 2> /dev/null 1> /dev/null)  
+}
+
+# purity test
+function scala_vars {
+   (sed 's/immutable/ok/g' c$out > cb$out;
+    egrep '\bvar\b|\breturn\b|\.par\.|\.par |ListBuffer|AtomicInteger|mutable|util.control|new Array' cb$out 2> /dev/null 1> /dev/null)
+}
+
+
+echo -e "" >> $out
+echo -e  "Below is the feedback for your submission danube.scala" >> $out
+echo -e  "" >> $out
+
+
+
+
+### compilation test
+
+echo -e  "danube.scala runs?" | tee -a $out
+
+if (scala_compile danube.scala)
+then
+    echo -e  "  --> success" | tee -a $out
+    tsts=$(( 0 ))
+else
+    echo -e  "  --> SCALA DID NOT RUN danube.scala" | tee -a $out
+    tsts=$(( 1 )) 
+fi
+
+
+# var, .par return, ListBuffer test
+#
+
+if [ $tsts -eq 0 ]
+then 
+      echo -e  "danube.scala does not contain VARS, RETURNS etc?" | tee -a $out
+
+      if (scala_vars danube.scala)
+      then
+	  echo -e  "  --> TEST FAILED\n" | tee -a $out
+	  tsts=$(( 1 ))  
+      else
+	  echo -e  "  --> success" | tee -a $out
+	  tsts=$(( 0 )) 
+      fi
+else
+    tsts=$(( 1 ))  
+fi
+
+
+
+### danube get_cvs_url tests
+
+if [ $tsts -eq 0 ]
+then
+  echo -e  "danube.scala tests:" | tee -a $out
+  echo -e  "  val movies_url = \"\"\"https://nms.kcl.ac.uk/christian.urban/movies.csv\"\"\"" | tee -a $out
+  echo -e  "  get_csv_url(movies_url).length == 9742" | tee -a $out
+
+  if (scala_assert "danube.scala" "danube_test1.scala")
+  then
+      echo -e  "  --> success" | tee -a $out
+      marks=$(( marks + 1.0 ))
+  else
+      echo -e  "  --> TEST FAILED\n" | tee -a $out
+  fi
+fi
+
+### danube processing tests
+
+if [ $tsts -eq 0 ]
+then
+  echo -e  "  val good_ratings = process_ratings(ratings)" | tee -a $out
+  echo -e  "  val movie_names = process_movies(movies)" | tee -a $out  
+  echo -e  "  " | tee -a $out
+  echo -e  "  good_ratings.length == 48580 " | tee -a $out
+  echo -e  "  movie_names.length == 9742 " | tee -a $out
+  echo -e  "  "  | tee -a $out
+  echo -e  "  val r_elems = List((\"1\",\"1\"), (\"1\",\"3\"), (\"1\",\"6\"), (\"1\",\"47\")) " | tee -a $out
+  echo -e  "  r_elems.forall(good_ratings.contains(_)) == true" | tee -a $out
+
+  if (scala_assert "danube.scala" "danube_test2.scala") 
+  then
+      echo -e  "  --> success" | tee -a $out
+      marks=$(( marks + 1.0 ))
+  else
+      echo -e  "  --> ONE OF THE TESTS FAILED\n" | tee -a $out
+  fi
+fi
+
+### danube groupById test
+
+if [ $tsts -eq 0 ]
+then
+  echo -e  "  val ls1 = List((\"1\", \"a\"), (\"2\", \"a\"), (\"1\", \"c\"), (\"2\", \"a\"), (\"1\", \"c\"))" | tee -a $out
+  echo -e  "  val ls2 = List((\"1\", \"a\"), (\"1\", \"b\"), (\"2\", \"x\"), (\"3\", \"a\"), (\"2\", \"y\"), (\"3\", \"c\"))" | tee -a $out
+  echo -e  "  groupById(ls1, Map()) == Map(1 -> List(c, c, a), 2 -> List(a, a))" | tee -a $out
+  echo -e  "  groupById(ls2, Map()) == Map(1 -> List(b, a), 2 -> List(x, y), 3 -> List(c, a))" | tee -a $out
+  echo -e  "      where the order in the lists is unimportant" | tee -a $out
+  echo -e  "  val ls3 = (11 to 1000 by 5).map(_.toString).toList" | tee -a $out
+  echo -e  "  val ls4 = ls3 zip ls3.tail" | tee -a $out
+  echo -e  "  val ls5 = ls4 ::: ls4.reverse" | tee -a $out
+  echo -e  "  groupById(ls5, Map()) == Map(11 -> List(16,16), 16 -> List(21,21), ....)" | tee -a $out
+
+  if (scala_assert "danube.scala" "danube_test3.scala")
+  then
+      echo -e  -e "  --> success" | tee -a $out
+      marks=$(( marks + 1.0 ))
+  else
+      echo -e  -e "  --> ONE OF THE TESTS FAILED\n" | tee -a $out
+  fi
+fi
+
+### danube favourites tests
+
+if [ $tsts -eq 0 ]
+then
+  echo -e  "  val good_ratings = process_ratings(ratings)" | tee -a $out
+  echo -e  "  val ratings_map = groupById(good_ratings, Map())" | tee -a $out
+  echo -e  "  favourites(ratings_map, \"912\").length  == 80 " | tee -a $out
+  echo -e  "  favourites(ratings_map, \"858\").length  == 158 " | tee -a $out
+  echo -e  "  favourites(ratings_map, \"260\").length  == 201 " | tee -a $out  
+
+  if (scala_assert "danube.scala" "danube_test4.scala") 
+  then
+    echo -e  "  --> success" | tee -a $out
+    marks=$(( marks + 1.0 ))
+  else
+    echo -e  "  --> ONE OF THE TESTS FAILED\n" | tee -a $out
+  fi
+fi
+
+### danube suggestions tests
+
+if [ $tsts -eq 0 ]
+then
+  echo -e  "  val good_ratings = process_ratings(ratings)" | tee -a $out
+  echo -e  "  val ratings_map = groupById(good_ratings, Map())" | tee -a $out
+  echo -e  "  suggestions(ratings_map, \"912\").length  == 4110 " | tee -a $out
+  echo -e  "  suggestions(ratings_map, \"858\").length  == 4883 " | tee -a $out
+  echo -e  "  suggestions(ratings_map, \"260\").length  == 4970 " | tee -a $out  
+
+  if (scala_assert "danube.scala" "danube_test5.scala") 
+  then
+    echo -e  "  --> success" | tee -a $out
+    marks=$(( marks + 1.0 ))
+  else
+    echo -e  "  --> ONE OF THE TESTS FAILED\n" | tee -a $out
+  fi
+fi
+
+### danube recommendation tests
+
+if [ $tsts -eq 0 ]
+then
+  echo -e  "  recommendations(ratings_map, movies_map, \"1\").length  == 2 " | tee -a $out
+  echo -e  "  recommendations(ratings_map, movies_map, \"2\").length  == 2 " | tee -a $out
+  echo -e  "  recommendations(ratings_map, movies_map, \"3\").length  == 2 " | tee -a $out
+  echo -e  "  recommendations(ratings_map, movies_map, \"4\").length  == 0 " | tee -a $out
+  echo -e  "  recommendations(ratings_map, movies_map, \"5\").length  == 2 " | tee -a $out
+
+  if (scala_assert "danube.scala" "danube_test6.scala") 
+  then
+    echo -e  "  --> success" | tee -a $out
+    marks=$(( marks + 1.0 ))
+  else
+    echo -e  "  --> ONE OF THE TESTS FAILED\n" | tee -a $out
+  fi
+fi
+
+
+
+## final marks
+echo -e "Overall mark for Main Part 2 (Scala)" | tee -a $out
+printf " %0.1f\n" $marks | tee -a $out
+
+