Fix indentations

Tests/Serializer/BaseSerializationTest.php

@@ -199,7 +199,7 @@ abstract class BaseSerializationTest extends \PHPUnit_Framework_TestCase
         }
     }
 
-	public function testReadOnly()
+    public function testReadOnly()
     {
         $author = new AuthorReadOnly(123, 'Ruud Kamphuis');
         $this->assertEquals($this->getContent('readonly'), $this->serialize($author));

Tests/Serializer/JsonSerializationTest.php

@@ -28,7 +28,7 @@ class JsonSerializationTest extends BaseSerializationTest
         static $outputs = array();
 
         if (!$outputs) {
-	        $outputs['readonly'] = '{"id":123,"full_name":"Ruud Kamphuis"}';
+            $outputs['readonly'] = '{"id":123,"full_name":"Ruud Kamphuis"}';
             $outputs['string'] = '"foo"';
             $outputs['boolean_true'] = 'true';
             $outputs['boolean_false'] = 'false';