[tests] Added test_override

Author: nemesifier

netjsonconfig/backends/base/backend.py

@@ -62,7 +62,7 @@ def _merge_config(self, config, templates):
             raise TypeError('templates argument must be an instance of list')
         # merge templates with main configuration
         result = {}
-        config_list = [config] + templates
+        config_list = templates + [config]
         for merging in config_list:
             result = merge_config(result, self._load(merging), self.list_identifiers)
         return result

tests/openwrt/test_backend.py

@@ -378,3 +378,25 @@ def test_checksum(self):
         sleep(1)
         checksum2 = md5(o.generate().getvalue()).hexdigest()
         self.assertEqual(checksum1, checksum2)
+
+    def test_override(self):
+        config = {
+            "interfaces": [
+                {
+                    "name": "eth0",
+                    "type": "ethernet",
+                    "disabled": False
+                }
+            ]
+        }
+        template = {
+            "interfaces": [
+                {
+                    "name": "eth0",
+                    "type": "ethernet",
+                    "disabled": True
+                }
+            ]
+        }
+        o = OpenWrt(config, templates=[template])
+        self.assertFalse(o.config['interfaces'][0]['disabled'])