Fix aomount and price argument dec for case = 0. Add unit tests. Minor codestyle fix.

1 files changed, 5 insertions, 3 deletions

diff --git a/lib/commerce.js b/lib/commerce.js
index 306cf337..56e63dba 100644
--- a/lib/commerce.js
+++ b/lib/commerce.js
@@ -42,14 +42,16 @@ var Commerce = function (faker) {
    * @param {number} max
    * @param {number} dec
    * @param {string} symbol
+   *
+   * @return {string}
    */
   self.price = function(min, max, dec, symbol) {
       min = min || 0;
       max = max || 1000;
-      dec = dec || 2;
+      dec = dec === undefined ? 2 : dec;
       symbol = symbol || '';
 
-      if(min < 0 || max < 0) {
+      if (min < 0 || max < 0) {
           return symbol + 0.00;
       }
 
@@ -109,7 +111,7 @@ var Commerce = function (faker) {
    */
   self.product = function() {
       return faker.random.arrayElement(faker.definitions.commerce.product_name.product);
-  }
+  };
 
   return self;
 };