Swap values in tests (in violation of spec)

This commit deliberately tests in a way that violates the spec. Versions
of this library prior to 6.0.0 allow properties adjacent to $ref to
override properties with the same name from the $ref'ed schema. This is
explicitly in violation of the spec, but cannot be changed in 5.x.x, as
it results in a significant behavioral change that may break end users'
application logic.

This issue is resolved in 6.0.0, and siblings of $ref are correctly
ignored from 6.0.0 onwards.

Author: erayd

tests/Constraints/DefaultPropertiesTest.php

@@ -121,12 +121,12 @@ public function getValidTests()
             ),
             array(// #15 infinite recursion via $ref (object)
                 '{}',
-                '{"properties":{"propertyOne": {"$ref": "#","default": "valueOne"}}, "default": {}}',
+                '{"properties":{"propertyOne": {"$ref": "#","default": {}}}, "default": "valueOne"}',
                 '{"propertyOne":{}}'
             ),
             array(// #16 infinite recursion via $ref (array)
                 '[]',
-                '{"items":[{"$ref":"#","default":"valueOne"}], "default": []}',
+                '{"items":[{"$ref":"#","default":[]}], "default": "valueOne"}',
                 '[[]]'
             ),
             array(// #17 default top value does not overwrite defined null