feat: add Lab4

Lab1/test.sh

@@ -0,0 +1,77 @@
+#!/bin/bash
+set -o nounset
+function control_c() {
+	if [ -e $out ]
+		then
+			rm -f $out
+		fi
+}
+
+trap control_c INT
+
+if [ $# -ne 1 ]
+then
+	echo "usage: $0 <main class>"
+	exit 1
+fi
+
+PROG=$1
+if [ ! -e $PROG.class ]
+then
+	echo "$PROG.class does not exist.  Have you compiled it with make or javac?"
+	exit 1
+fi
+
+num_failed=0
+i=1
+while true
+do
+	if [ -e inputs/$PROG.$i.in ]
+	then
+		if [ $(uname) == "Darwin" ]
+		then
+			out=$(mktemp -t $PROG)
+		else
+			out=$(mktemp --suffix=$PROG)
+		fi
+		java $PROG < inputs/$PROG.$i.in  > $out
+		status="$?"
+		if [ "$status" -ne "0" ]
+		then
+			echo "$PROG: return non-zero status $status for test case $i"
+			# cat inputs/$PROG.$i.in
+			num_failed=$((num_failed + 1))
+		else 
+			if [ -e $out ] 
+			then
+				if [ `diff -bB $out outputs/$PROG.$i.out | wc -l` -ne 0 ] 
+				then
+					echo "$PROG test $i: failed"
+					#cat inputs/$PROG.$i.in
+					num_failed=$((num_failed + 1))
+				else
+					echo "$PROG test $i: passed"
+				fi
+				rm -f $out
+			else
+				echo "$PROG: cannot find output file. Execution interrupted?"
+				num_failed=$((num_failed + 1))
+			fi
+		fi
+		i=$((i + 1))
+	else
+		break
+	fi
+done
+
+if [ $i -eq 1 ] 
+then
+	echo "$PROG: no test cases found 🤷"
+elif [ $num_failed -eq 0 ] 
+then
+	echo "$PROG: passed everything 🎉"
+fi
+# Run style checker
+#java -jar ~cs2030s/bin/checkstyle.jar -c ~cs2030s/bin/cs2030_checks.xml *.java 
+java -jar ./checkstyle.jar -c ./cs2030_checks.xml *.java 
+# vim:noexpandtab:sw=4:ts=4