Clean up tests

test/unit/util_test.js

@@ -230,22 +230,22 @@ describe('util', function() {
     describe('#isHex', function(){
       it('should return true when given a hex string', function() {
         var result = util.isHex('c3ab8ff13720e8ad9047dd39466b3c8974e592c2fa383d4a3960714caef0c4f2')
-        assert.equal(result, true)
+        assert(result)
       })
 
       it('should return false when given a non-hex string', function() {
         var result = util.isHex('c3ab8ff13720e8ad9047dd39466b3c8974e592c2fa383d4a3960714imnotreal')
-        assert.equal(result, false)
+        assert(!result)
       })
 
       it('should return false when given a string containing a non letter/number character', function() {
         var result = util.isHex('c3ab8ff13720!8ad9047dd39466b3c%8974e592c2fa383d4a396071imnotreal')
-        assert.equal(result, false)
+        assert(!result)
       })
 
       it('should return true when given a hex string with hex-prefix', function() {
         var result = util.isHex('0xc3ab8ff13720e8ad9047dd39466b3c8974e592c2fa383d4a3960714caef0c4f2')
-        assert.equal(result, true)
+        assert(result)
       })
 
     })