Remove null values

Author: barryvdh

src/Message/AuthorizeRequest.php

@@ -42,6 +42,9 @@ public function getData()
             'taxExempt' => $this->getTaxExempt(),
         ];
 
+        // Remove null values
+        $data = array_filter($data);
+
         $data += $this->getCardData();
 
         return $data;

tests/Message/AuthorizeRequestTest.php

@@ -40,7 +40,9 @@ public function testGetData()
         $this->assertSame('Kayla', $data['billing']['firstName']);
         $this->assertSame('League', $data['shipping']['company']);
         $this->assertFalse($data['options']['submitForSettlement']);
-        $this->assertNull($data['billingAddressId']);
+
+        // Check empty values are not sent
+        $this->assertFalse(isset($data['billingAddressId']));
 
         $this->request->configure();
         $this->assertSame('production', \Braintree_Configuration::environment());