add: HOTP.at and HOTP.verify functions

test/hotp_test.js

@@ -4,17 +4,18 @@ var assert = require('assert');
 describe('HOTP module test', function() {
 
     var HOTP = hotp.HOTP;
-    var a = new HOTP("BASE32_ENCODED_SECRET");
+    var a = new HOTP("J22U6B3WIWRRBTAV");
     
     describe('at() function', function() {
-        it("should print 'HOTP.at'", function() {
-            assert.equal("HOTP.at", a.at());
+        it("should return string", function() {
+            assert.equal("string", typeof(a.at(0)));
         });
     });
 
     describe('verify() function', function() {
-        it("should print 'HOTP.verify'", function() {
-            assert.equal("HOTP.verify", a.verify());
+        it("should verify the digit", function() {
+            assert.equal(true, a.verify(a.at(0), 0));
+            assert.equal(false, a.verify(a.at(0), 1));
         })
     })
 });