1 #!/bin/bash

     2 

     3 # to make the script fail safely

     4 set -euo pipefail

     5 

     6 

     7 out=${1:-output}

     8 

     9 # read marks for CW7 part 1

    10 marks=$(( `tail -1 $out` ))

    11 

    12 echo $marks

    13 

    14 echo "" >> $out

    15 

    16 echo "Below is the feedback for your submission danube.scala" >> $out

    17 echo "" >> $out

    18 

    19 

    20 # compilation tests

    21 

    22 function scala_compile {

    23   (ulimit -t 30; JAVA_OPTS="-Xmx1g" scala "$1" 2>> $out 1>> $out) 

    24 }

    25 

    26 # functional tests

    27 

    28 function scala_assert {

    29   (ulimit -t 30; JAVA_OPTS="-Xmx1g" scala -i "$1" "$2" -e "" 2> /dev/null 1> /dev/null)

    30 }

    31 

    32 # purity test

    33 

    34 function scala_vars {

    35    (egrep '\bvar\b|\breturn\b|ListBuffer|mutable' "$1" 2> /dev/null 1> /dev/null)

    36 }

    37 

    38 

    39 # var, .par return, ListBuffer test

    40 #

    41 echo "danube.scala does not contain vars, returns etc?" | tee -a $out

    42 

    43 if (scala_vars danube.scala)

    44 then

    45   echo "  --> test failed" | tee -a $out

    46   tsts0=$(( 1 ))  

    47   echo "  --> fail (make triple-sure your program conforms to the required format)" | tee -a $out

    48   tsts0=$(( 0 ))

    49 else

    50   echo "  --> success" | tee -a $out

    51   tsts0=$(( 0 )) 

    52 fi

    53 

    54 ### compilation test

    55 

    56 

    57 if  [ $tsts0 -eq 0 ]

    58 then 

    59   echo "danube.scala runs?" | tee -a $out

    60 

    61   if (scala_compile danube.scala)

    62   then

    63     echo "  --> success" | tee -a $out

    64     tsts=$(( 0 ))

    65   else

    66     echo "  --> scala did not run danube.scala" | tee -a $out

    67     tsts=$(( 1 )) 

    68   fi

    69 else

    70   tsts=$(( 1 ))     

    71 fi

    72 

    73 ### danube get_cvs_url tests

    74 

    75 if [ $tsts -eq 0 ]

    76 then

    77   echo "danube.scala tests:" | tee -a $out

    78   echo "  val movies_url = \"\"\"https://nms.kcl.ac.uk/christian.urban/movies.csv\"\"\"" | tee -a $out

    79   echo "  get_csv_url(movies_url).length == 9742" | tee -a $out

    80 

    81   if (scala_assert "danube.scala" "danube_test1.scala")

    82   then

    83       echo "  --> success" | tee -a $out

    84       marks=$(( marks + 1 ))

    85   else

    86     echo "  --> one of the tests failed" | tee -a $out

    87   fi

    88 fi

    89 

    90 ### danube processing tests

    91 

    92 if [ $tsts -eq 0 ]

    93 then

    94   echo "  val good_ratings = process_ratings(ratings)" | tee -a $out

    95   echo "  val movie_names = process_movies(movies)" | tee -a $out  

    96   echo "  " | tee -a $out

    97   echo "  good_ratings.length == 48580 " | tee -a $out

    98   echo "  movie_names.length == 9742 " | tee -a $out

    99 

   100   if (scala_assert "danube.scala" "danube_test2.scala") 

   101   then

   102       echo "  --> success" | tee -a $out

   103       marks=$(( marks + 1 ))

   104   else

   105     echo "  --> one of the tests failed" | tee -a $out

   106   fi

   107 fi

   108 

   109 

   110 

   111 ## final marks

   112 echo "Overall mark for CW 7, Part 1 + 2" | tee -a $out

   113 echo "$marks" | tee -a $out

   114 

   115