Merge pull request #9 from nathanmac/fix/xml-empty-values

Fix for xml empty values, should return null.

Author: Nathan Macnamara

src/Formats/XML.php

@@ -28,7 +28,12 @@ public function parse($payload)
         {
             try {
                 $xml = simplexml_load_string($payload, 'SimpleXMLElement', LIBXML_NOCDATA);
-                return json_decode(json_encode((array) $xml), 1);   // Work around to accept xml input
+
+                // Fix for empty values in XML
+                $json = json_encode((array) $xml);
+                $json = str_replace(':{}',':null', $json);
+                $json = str_replace(':[]',':null', $json);
+                return json_decode($json, 1);   // Work around to accept xml input
             } catch (\Exception $ex) {
                 throw new ParserException('Failed To Parse XML');
             }

tests/XMLTest.php

@@ -15,6 +15,20 @@ protected function tearDown()
         m::close();
     }
 
+    /** @test */
+    public function null_values_for_empty_values()
+    {
+        $parser = m::mock('Nathanmac\Utilities\Parser\Parser')
+            ->shouldDeferMissing()
+            ->shouldAllowMockingProtectedMethods();
+
+        $parser->shouldReceive('getPayload')
+            ->once()
+            ->andReturn('<xml><comments><title></title><message>hello world</message></comments><comments><title>world</title><message></message></comments></xml>');
+
+        $this->assertEquals(array("comments" => array(array("title" => null, "message" => "hello world"), array("title" => "world", "message" => null))), $parser->payload('application/xml'));
+    }
+
     /** @test */
     public function array_structured_getPayload_xml()
     {