JSUtil: Return result quicker for isValidJSON and add additional tests.

lib/util/js.js

@@ -32,13 +32,12 @@ module.exports = {
     try {
       parsed = JSON.parse(arg);
     } catch (e) {
-      parsed = false;
+      return false;
     }
     if (typeof(parsed) === 'object') {
       return true;
-    } else {
-      return false;
     }
+    return false;
   },
   isHexa: isHexa,
   isHexaString: isHexa,

test/util/js.js

@@ -13,6 +13,7 @@ describe('js utils', function() {
     
     var hexa = '8080808080808080808080808080808080808080808080808080808080808080';
     var json = '{"key": ["value", "value2"]}';
+    var json2 = '["value", "value2", {"key": "value"}]';
 
     it('does not mistake an integer as valid json object', function() {
       var valid = JSUtil.isValidJSON(hexa);
@@ -24,6 +25,11 @@ describe('js utils', function() {
       valid.should.equal(true);
     });
 
+    it('correctly validates an array json object', function() {
+      var valid = JSUtil.isValidJSON(json);
+      valid.should.equal(true);
+    });
+
   });
 
 });