Fix #21 objectContent with null value

Author: SBoudrias

.travis.yml

@@ -1,7 +1,7 @@
 sudo: false
 language: node_js
 node_js:
-  - v5
-  - v4
-  - '0.12'
-  - '0.10'
+  - node
+  - 6
+  - 4
+  - 0.12

fixtures/dummy.json

@@ -1,5 +1,6 @@
 {
   "a": {"b": 1},
   "b": [1, 2],
-  "c": "a"
+  "c": "a",
+  "d": null
 }

index.js

@@ -206,7 +206,7 @@ assert.notImplement = function (subject, methods) {
 
 assert.objectContent = function (obj, content) {
   Object.keys(content).forEach(function (key) {
-    if (typeof content[key] === 'object') {
+    if (_.isObject(content[key])) {
       assert.objectContent(obj[key], content[key]);
       return;
     }
@@ -223,7 +223,7 @@ assert.objectContent = function (obj, content) {
 
 assert.noObjectContent = function (obj, content) {
   Object.keys(content).forEach(function (key) {
-    if (typeof content[key] === 'object') {
+    if (_.isObject(content[key])) {
       assert.noObjectContent(obj[key], content[key]);
       return;
     }

test.js

@@ -284,7 +284,8 @@ describe('yeoman-assert', function () {
     it('pass if file contains the keys', function () {
       assert.doesNotThrow(yoAssert.jsonFileContent.bind(yoAssert, file, {
         a: {b: 1},
-        b: [1, 2]
+        b: [1, 2],
+        d: null
       }));
     });