Added unit test for SQUISH.LUA

Author: Lethja

test/SQUISH/SQUISH.LUA

@@ -0,0 +1 @@
+../../util/SQUISH.LUA

test/SQUISH/test.sh

@@ -0,0 +1,23 @@
+#!/usr/bin/env sh
+set -e
+INTERP=${INTERP:-lua}
+SCRIPT="SQUISH.LUA"
+
+mkdir -p test
+cp $SCRIPT test
+SCRIPT="test/$SCRIPT"
+BEFORE=$(stat -L -c%s "$SCRIPT")
+$INTERP $SCRIPT $SCRIPT
+AFTER=$(stat -L -c%s "$SCRIPT")
+if [ "$AFTER" -ge "$BEFORE" ]; then echo "SQUISH: FAIL"; exit 1; fi
+$INTERP $SCRIPT $SCRIPT
+FINAL=$(stat -L -c%s "$SCRIPT")
+echo
+
+rm -R test
+
+if [ "$AFTER" -eq "$FINAL" ]; then
+  echo "SQUISH: PASS";
+else
+  echo "SQUISH: FAIL"; exit 1;
+fi