uncomment some test cases!

test/test.util.js

@@ -82,7 +82,6 @@ describe('util', function() {
   });
   describe('#intToBuffer2C', function() {
     var data = [
-      /*
       [0, ''],
       [-0, ''],
       [1, '01'],
@@ -93,9 +92,7 @@ describe('util', function() {
       [128, '8000'],
       [129, '8100'],
       [4096, '0010'],
-      */
       [-4096, '00f0'],
-      /*
       [32767, 'ff7f'],
       [878082192, '90785634'],
       [0x01234567890, '9078563412'],
@@ -104,7 +101,6 @@ describe('util', function() {
       [4294967297, '0100000001'],
       [2147483647, 'ffffff7f'],
       [-2147483647, '01000080'],
-      */
     ];
     data.forEach(function(datum) {
       var integer = datum[0];