added test target

Makefile

@@ -42,6 +42,9 @@ release: | dirs $(PROJECT)-release
 .PHONY: debug
 debug: | dirs $(PROJECT)-debug
 
+.PHONY: test
+test: test-all
+
 # Targets
 
 dirs:
@@ -71,3 +74,7 @@ $(PROJECT)-debug: $(OBJ)
 clean:
 	rm -rf obj
 	rm -f $(PROJECT)-{release,debug}
+
+test-all:
+	@./test.sh ./$(PROJECT)-debug ./$(PROJECT)-release
+

test.sh

@@ -0,0 +1,54 @@
+#!/bin/bash
+
+TFILE=/tmp/shuffle3-test-$(uuidgen)
+TFILE2=$TFILE-cmp
+
+FSIZE=${FSIZE:-$(( 1024 * 1024 * 10))}
+FCNT=${FCNT:-4}
+
+TRUE_SIZE=$(( FSIZE * FCNT))
+
+function cleanup {
+	rm -f $TFILE $TFILE2
+}
+
+trap cleanup EXIT
+
+stest() {
+	if fcmp $TFILE $TFILE2; then
+		echo ": shuffling $TRUE_SIZE bytes"
+		$1 -s $TFILE
+		if fcmp $TFILE $TFILE2; then
+			echo "Failed: Shuffle did nothing"
+			exit 1
+		else
+			echo ": unshuffling $TRUE_SIZE bytes"
+			$1 -u $TFILE
+			if fcmp $TFILE $TFILE2; then
+				echo "OK"	
+			else
+				echo "Failed: Unshuffle didn't reproduce original file"
+				exit 1
+			fi
+		fi
+	else
+		echo "Invalid init: Files weren't identical"
+		exit -1
+	fi
+}
+
+echo ">>> Initialising"
+dd if=/dev/urandom of=$TFILE bs=$FSIZE count=$FCNT >> /dev/null 2>&1 || exit -1
+cp $TFILE $TFILE2 || exit -1
+
+if [[ -f "$1" ]]; then
+	echo ">>> Testing $1"
+	stest "$1" || exit 1
+fi
+
+if [[ -f  "$2" ]]; then
+	echo ">>> Testing $2"
+	stest "$2" || exit 2
+fi
+
+echo "Passed."