--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/pre_testing3/postfix_test.sh	Sun Nov 01 01:21:31 2020 +0000
@@ -0,0 +1,162 @@
+#!/bin/bash
+set -euo pipefail
+
+
+out=${1:-output}
+
+echo -e "" > $out
+
+echo -e "Below is the feedback for your submission postfix.scala and postfix2.scala" >> $out
+echo -e "" >> $out
+
+# 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" -- "$2" -e "" 2> /dev/null 1> /dev/null)
+}
+
+# purity test
+
+function scala_vars {
+   (egrep '\bvar\b|\breturn\b|\.par\.|\.par |ListBuffer|mutable|util.control|new Array' c$out 2> /dev/null 1> /dev/null)
+}
+
+
+
+# compilation test
+
+echo -e "postfix.scala runs?" >> $out
+
+if (scala_compile postfix.scala)
+then
+    echo -e "  --> yes" >> $out
+    tsts=$(( 0 ))
+  else
+    echo -e "  --> SCALA DID NOT RUN postfix.scala\n" >> $out
+    tsts=$(( 1 )) 
+fi
+
+
+# var, return, ListBuffer test
+#
+echo -e "postfix.scala does not contain vars, returns etc?" >> $out
+
+if  [ $tsts -eq 0 ]
+then 
+    if (scala_vars postfix.scala)
+    then
+	echo -e "   --> FAIL (make triple-sure your program conforms to the required format)" >> $out 
+	tsts=$(( 1 ))
+    else
+	echo -e "  --> success" >> $out
+	tsts=$(( 0 )) 
+    fi
+fi
+
+
+### postfix tests
+
+if [ $tsts -eq 0 ]
+then
+  echo -e " syard(split(\"3 + 4 * ( 2 - 1 )\")) == List(\"3\", \"4\", \"2\", \"1\", \"-\", \"\*\", \"+\")" >> $out
+  echo -e " syard(split(\"( ( ( 3 ) ) + ( ( 4 + ( 5 ) ) ) )\")) == List(\"3\", \"4\", \"5\", \"+\", \"+\")" >> $out
+  echo -e " syard(split(\"5 + 7 / 2\")) == List(\"5\", \"7\", \"2\", \"/\", \"+\")" >> $out
+  echo -e " syard(split(\"5 * 7 / 2\")) == List(\"5\", \"7\", \"\*\", \"2\", \"/\")" >> $out
+  
+  if (scala_assert "postfix.scala" "postfix_test7.scala")
+  then
+    echo -e "  --> success" >> $out
+  else
+    echo -e "  --> \n ONE TEST FAILED\n" >> $out
+  fi
+fi
+
+
+
+if [ $tsts -eq 0 ]
+then
+  echo -e " compute(syard(split(\"3 + 4 * ( 2 - 1 )\"))) == 7" >> $out
+  echo -e " compute(syard(split(\"10 + 12 * 33\"))) == 406" >> $out
+  echo -e " compute(syard(split(\"( 5 + 7 ) * 2\"))) == 24" >> $out
+  echo -e " compute(syard(split(\"5 + 7 / 2\"))) == 8" >> $out
+  echo -e " compute(syard(split(\"5 * 7 / 2\"))) == 17" >> $out
+  echo -e " compute(syard(split(\"9 + 24 / ( 7 - 3 )\"))) == 15" >> $out
+  
+  if (scala_assert "postfix.scala" "postfix_test8.scala")
+  then
+    echo -e "  --> success" >> $out
+  else
+    echo -e "  --> \n ONE TEST FAILED\n" >> $out
+  fi
+fi
+
+echo -e "" >> $out
+
+### postfix2 tests
+
+
+# compilation test
+
+echo -e "postfix2.scala runs?" >> $out
+
+if (scala_compile postfix2.scala)
+then
+    echo -e "  --> yes" >> $out
+    tsts1=$(( 0 ))
+else
+    echo -e "  --> SCALA DID NOT RUN postfix2.scala\n" >> $out
+    tsts1=$(( 1 )) 
+fi
+
+
+# var, return, ListBuffer test
+#
+echo -e "\n\npostfix2.scala does not contain vars, returns etc?" >> $out
+
+if [ $tsts1 -eq 0 ]
+then
+    if (scala_vars postfix2.scala)
+    then
+	echo -e "   --> FAIL (make triple-sure your program conforms to the required format)" >> $out 
+	tsts1=$(( 1 ))
+    else
+	echo -e "  --> success" >> $out
+	tsts1=$(( 0 )) 
+    fi
+fi
+
+
+if [ $tsts1 -eq 0 ]
+then
+  echo -e " syard(split(\"3 + 4 * ( 2 - 1 )\")) == List(\"3\", \"4\", \"2\", \"1\", \"-\", \"\*\", \"+\")" >> $out
+  echo -e " syard(split(\"( ( ( 3 ) ) + ( ( 4 + ( 5 ) ) ) )\")) == List(\"3\", \"4\", \"5\", \"+\", \"+\")" >> $out
+  echo -e " syard(split(\"5 + 7 / 2\")) == List(\"5\", \"7\", \"2\", \"/\", \"+\")" >> $out
+  echo -e " syard(split(\"5 * 7 / 2\")) == List(\"5\", \"7\", \"\*\", \"2\", \"/\")" >> $out
+  echo -e " syard(split(\"3 + 4 * 8 / ( 5 - 1 ) ^ 2 ^ 3\")) == " >> $out
+  echo -e "         List(\"3\", \"4\", \"8\", \"\*\", \"5\", \"1\", \"-\", \"2\", \"3\", \"^\", \"^\", \"/\", \"+\")" >> $out
+  echo -e " " >> $out 
+  echo -e " compute(syard(split(\"3 + 4 * ( 2 - 1 )\"))) == 7" >> $out
+  echo -e " compute(syard(split(\"10 + 12 * 33\"))) == 406" >> $out
+  echo -e " compute(syard(split(\"( 5 + 7 ) * 2\"))) == 24" >> $out
+  echo -e " compute(syard(split(\"5 + 7 / 2\"))) == 8" >> $out
+  echo -e " compute(syard(split(\"5 * 7 / 2\"))) == 17" >> $out
+  echo -e " compute(syard(split(\"9 + 24 / ( 7 - 3 )\"))) == 15" >> $out
+  echo -e " compute(syard(split(\"4 ^ 3 ^ 2\"))) == 262144" >> $out
+  echo -e " compute(syard(split(\"4 ^ ( 3 ^ 2 )\"))) == 262144" >> $out
+  echo -e " compute(syard(split(\"( 4 ^ 3 ) ^ 2\"))) == 4096" >> $out
+  echo -e " compute(syard(split(\"( 3 + 1 ) ^ 2 ^ 3\"))) == 65536" >> $out
+  
+  if (scala_assert "postfix2.scala" "postfix_test9.scala")
+  then
+    echo -e "  --> success" >> $out
+  else
+    echo -e "  --> \n ONE TEST FAILED\n" >> $out
+  fi
+fi
+