Add scenario to check not null values.

Author: nicoosh

tests/features/json.feature

@@ -131,3 +131,18 @@ Feature: Testing JSONContext
         And the JSON node "root[4]" should be equal to the number 1312
         And the JSON node "root[4]" should be equal to the number 1312.0
         And the JSON node "root[5]" should be equal to the number 1936.2
+
+    Scenario: Check not null values
+        Given I am on "/json/notnullvalues.json"
+        Then the response should be in JSON
+        And the JSON node '' should have 5 elements
+        And the JSON node "one" should not be null
+        And the JSON node "one" should be false
+        And the JSON node "two" should not be null
+        And the JSON node "two" should be true
+        And the JSON node "three" should not be null
+        And the JSON node "three" should be equal to the string ""
+        And the JSON node "four" should not be null
+        And the JSON node "four" should be equal to the string "foo"
+        And the JSON node "five" should not be null
+        And the JSON node "five" should be equal to the number 5

tests/fixtures/www/json/notnullvalues.json

@@ -0,0 +1,7 @@
+{
+  "one": false,
+  "two": true,
+  "three": "",
+  "four": "foo",
+  "five": 5
+}