fix(location): Fix serialization of Location class

Author: dborsatto

CHANGELOG.md

@@ -5,6 +5,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased](https://github.com/contentful/contentful-core.php/compare/1.0.0...HEAD)
 
+* `Contentful\Core\Api\Location` used to provide a wrongful serialization of the longitude property. Now it correctly serializes to `lon` instead of `long`.
 * The `Contentful\Core\Log\Timer` has been deprecated and will be removed in version 2.
 
 ## [1.0.0](https://github.com/contentful/contentful-core.php/tree/1.0.0) (2018-04-17)

src/Api/Location.php

@@ -61,7 +61,7 @@ public function jsonSerialize()
     {
         return [
             'lat' => $this->latitude,
-            'long' => $this->longitude,
+            'lon' => $this->longitude,
         ];
     }
 

tests/Unit/Api/LocationTest.php

@@ -28,7 +28,7 @@ public function testJsonSerialization()
     {
         $loc = new Location(15.0, 17.8);
 
-        $this->assertJsonStringEqualsJsonString('{"lat":15,"long":17.8}', \json_encode($loc));
+        $this->assertJsonStringEqualsJsonString('{"lat":15,"lon":17.8}', \json_encode($loc));
     }
 
     public function testQueryStringFormatted()