Add more complete test.

README.txt

@@ -11,3 +11,7 @@ For this reason - the industry generally encodes these in base45. A document for
 
     ```https://datatracker.ietf.org/doc/draft-faltstrom-base45/```
 
+## Testing
+
+The test.sh script does a simple test against the Javascript and Python versions of this utility.
+

test.sh

@@ -0,0 +1,31 @@
+#!/bin/sh
+#
+# Test against python and JS scripts
+#
+C_BASE45=./base45
+PY_BASE45=${PY_BASE45:-$(python-config --prefix)/bin/base45}
+JS_BASE45=${JS_BASE45:-${NPMDIR}/bin/base45}
+
+I=0
+while test ${I} -lt 100
+do
+   for len in ${I} $RANDOM
+   do
+	openssl rand ${len} > x
+	cat x  |\
+		${C_BASE45} | ${PY_BASE45} --decode |\
+		${PY_BASE45} --encode | ${C_BASE45} -d |\
+		${JS_BASE45} | ${C_BASE45} -d |\
+		${C_BASE45}  |  ${JS_BASE45} -d |\
+		${JS_BASE45} | ${PY_BASE45} --decode |\
+		${PY_BASE45} --encode |  ${JS_BASE45} -d |\
+	cat > y
+
+	if ! diff x y; then
+		echo FAIL
+		break
+	fi
+     done
+     I=$(expr ${I} + 1)
+done
+exit 0