Added

- TypeScript definitions.
- clone method.

Changed
- throw error if update after finalize

tests/hmac-test.js

@@ -203,9 +203,18 @@
         call: function (key, message) {
           var hash = algorithm.update(key, message);
           hash.hex();
-          hash.update(message);
+          hash.finalize();
           return hash.hex();
         }
+      },
+      {
+        name: 'clone',
+        call: function (key, message) {
+          var hash = algorithm.update(key, message);
+          var hash2 = hash.clone();
+          hash.update('any');
+          return hash2.hex();
+        }
       }
     ];
 
@@ -250,6 +259,16 @@
         });
       });
 
+      context('when update after finalize', function () {
+        it('should throw error', function () {
+          expect(function () {
+            var hash = algorithm.update('key', 'any');
+            hash.hex();
+            hash.update('any');
+          }).to.throwError(/finalize already called/);
+        });
+      });
+
       describe('#' + name, function () {
         errorTestCases.forEach(function (testCase) {
           context('when ' + testCase, function () {

tests/test.js

@@ -260,9 +260,18 @@
         call: function (message) {
           var hash = algorithm.update(message);
           hash.hex();
-          hash.update(message);
+          hash.finalize();
           return hash.hex();
         }
+      },
+      {
+        name: 'clone',
+        call: function (message) {
+          var hash = algorithm.update(message);
+          var hash2 = hash.clone();
+          hash.update('any');
+          return hash2.hex();
+        }
       }
     ];
 
@@ -317,6 +326,16 @@
         });
       });
 
+      context('when update after finalize', function () {
+        it('should throw error', function () {
+          expect(function () {
+            var hash = algorithm.update('any');
+            hash.hex();
+            hash.update('any');
+          }).to.throwError(/finalize already called/);
+        });
+      });
+
       context('when large size', function () {
         var hash = algorithm.create();
         hash.bytes = 4294967295;