Change Interest.interestLifetime to be milliseconds (not seconds).
diff --git a/js/testing/test-encode-decode-Interest.html b/js/testing/test-encode-decode-Interest.html
index 735fce8..050aaf7 100644
--- a/js/testing/test-encode-decode-Interest.html
+++ b/js/testing/test-encode-decode-Interest.html
@@ -21,7 +21,7 @@
             interest.childSelector = 1;

             interest.answerOriginKind = 4;

             interest.scope = 2;

-            interest.interestLifetime = 30;

+            interest.interestLifetime = 30000;

             interest.nonce = new Uint8Array([0x61, 0x62, 0x61, 0x62, 0x61, 0x62]);

             var pkd = [];

             for (i = 0; i < 32; ++i)

@@ -89,7 +89,7 @@
 			}

 			

 			if (interest.interestLifetime != null ) {

-				output += "InterestLifetime: ";

+				output += "InterestLifetime (milliseconds): ";

 				output +=  interest.interestLifetime;

 				output += "<br/>";

 			}