diff --git a/nodejs/scripts/tests/GH73/GH73Calendar.js b/nodejs/scripts/tests/GH73/GH73Calendar.js
index <HASH>..<HASH> 100644
--- a/nodejs/scripts/tests/GH73/GH73Calendar.js
+++ b/nodejs/scripts/tests/GH73/GH73Calendar.js
@@ -16,10 +16,15 @@ module.exports = {
 		test.throws(function() {
 			gMonthDay.validateMonthDayRange(04, 31);
 		}, "Error");
+
 		test.throws(function() {
 			gMonthDay.validateMonthDayRange(11, 31);
 		}, "Error");
 
+		test.doesNotThrow(function() {
+			gMonthDay.validateMonthDayRange(12, 31);
+		}, "Error");
+
 		test.done();
 	},
 }
\ No newline at end of file
Issue #<I>. Added a "doesNotThrow" test in calendar.