fixed xpath and added test

ncclient/devices/iosxe.py

@@ -43,7 +43,7 @@ def add_additional_ssh_connect_params(self, kwargs):
 
     def transform_edit_config(self, node):
         # find the first node that has the tag "config" with no namespace
-        nodes = node.findall(".//config")
+        nodes = node.findall("./config")
         if len(nodes) == 1:
             logger.debug('IOS XE handler: patching namespace of config element')
             nodes[0].tag = '{%s}%s' % (BASE_NS_1_0, 'config')

test/unit/devices/test_iosxe.py

@@ -1,5 +1,17 @@
 import unittest
 from ncclient.devices.iosxe import *
+from ncclient.xml_ import new_ele
+from ncclient.xml_ import qualify
+from ncclient.xml_ import validated_element
+
+
+CFG_BROKEN = """
+<config>
+  <native xmlns="http://cisco.com/ns/yang/Cisco-IOS-XE-native">
+    <hostname>tl-einarnn-c8kv</hostname>
+  </native>
+</config>
+"""
 
 
 class TestIosxeDevice(unittest.TestCase):
@@ -20,3 +32,10 @@ def test_add_additional_ssh_connect_params(self):
 
     def test_csr_unknown_host_cb(self):
         self.assertTrue(iosxe_unknown_host_cb('host', 'fingerprint'))
+
+    def test_iosxe_transform_edit_config(self):
+        node = new_ele("edit-config")
+        node.append(validated_element(CFG_BROKEN, ("config", qualify("config"))))
+        node = self.obj.transform_edit_config(node)
+        config_nodes = node.findall('./config')
+        self.assertTrue(len(config_nodes) == 0)