From ee5317948bb258d610ab1c8b5405a4b1ca69f4fb Mon Sep 17 00:00:00 2001
From: grossmj <grossmj@gns3.net>
Date: Fri, 6 Apr 2018 14:32:06 +0700
Subject: [PATCH] Fix tests.

---
 gns3server/controller/ports/port.py | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/gns3server/controller/ports/port.py b/gns3server/controller/ports/port.py
index fb9acae8..df670ec5 100644
--- a/gns3server/controller/ports/port.py
+++ b/gns3server/controller/ports/port.py
@@ -93,13 +93,16 @@ class Port:
         self._short_name = val
 
     def __json__(self):
-        return {
+        info = {
             "name": self._name,
             "short_name": self.short_name,
             "data_link_types": self.data_link_types,
             "port_number": self._port_number,
             "adapter_number": self._adapter_number,
-            "adapter_type": self._adapter_type,
-            "mac_address": self._mac_address,
             "link_type": self.link_type
         }
+        if self._adapter_type:
+            info["adapter_type"] = self._adapter_type
+        if self._mac_address:
+            info["mac_address"] = self._mac_address
+        return info