#!/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 2.  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 2

marks=$(( 0 ))

# compilation tests

function scala_compile {

    (ulimit -t 360; JAVA_OPTS="-Xmx1g" scala "$1" 2> /dev/null 1> /dev/null)

}

# functional tests

function scala_assert {

    (ulimit -t 360; JAVA_OPTS="-Xmx4g -Xss200m" scala -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)

}

# knights3: purity test

#

echo "knight3.scala does not contain vars, returns, Arrays, ListBuffers etc?" | tee -a $out

if (scala_vars knight3.scala)

then

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

  tsts0=$(( 1 ))

else

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

  tsts0=$(( 0 )) 

fi

# compilation test

if  [ $tsts0 -eq 0 ]

then    

  echo "knight3.scala runs?" | tee -a $out

  if (scala_compile knight3.scala)

  then

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

    tsts1=$(( 0 ))

  else

    echo "  --> scala knight3.scala did not run successfully" | tee -a $out

    tsts1=$(( 1 )) 

  fi

else

  tsts1=$(( 1 ))     

fi

# ordered move test

if [ $tsts1 -eq 0 ]

then

  echo " ordered_moves(8, List((3,4), (3,2)), (1,3)) == List((0,1), (0,5), (2,1), (2,5))" | tee -a $out

  echo " ordered_moves(8, List((4,0)), (0,0)) == List((2,1), (1,2))" | tee -a $out

  echo " ordered_moves(8, List((0,4)), (0,0)) == List((1,2), (2,1))" | tee -a $out

  if (scala_assert "knight3.scala" "knight3a_test.scala")

  then

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

      marks=$(( marks + 1 ))

  else

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

  fi

fi

# first-closed-tour test

if [ $tsts1 -eq 0 ]

then

  echo " first_closed_tour_heuristic(6, List((3,3))) found and correct?" | tee -a $out

  if (scala_assert "knight3.scala" "knight3b_test.scala")

  then

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

      marks=$(( marks + 1 ))

  else

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

  fi

fi

if [ $tsts1 -eq 0 ]

then

  echo " first_tour_heuristic(8, List((0,0))) found and correct?" | tee -a $out

  echo " first_tour_heuristic(40, List((0,0))) found and correct?" | tee -a $out

  if (scala_assert "knight3.scala" "knight3c_test.scala")

  then

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

      marks=$(( marks + 1 ))

  else

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

  fi

fi

## final marks

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

echo "$marks" | tee -a $out