Fix nxos_facts for nxapi transport (#23302)

* Partial revert of 2e476e64cd

This broke handling of nxos_facts over nxapi

* Fix nxos_facts tests not run in isolation

(cherry picked from commit d890167575)

lib/ansible/modules/network/nxos/nxos_facts.py

@@ -218,7 +218,6 @@ class FactsBase(object):
             yield self.transform_dict(item, keymap)
 
 
-
 class Default(FactsBase):
 
     VERSION_MAP = frozenset([
@@ -315,23 +314,38 @@ class Interfaces(FactsBase):
         return interfaces
 
     def populate_neighbors(self, data):
-        # if there are no neighbors the show command returns
-        # ERROR: No neighbour information
-        if data.startswith('ERROR'):
-            return dict()
-
-        lines = data.split('\n')
-        regex = re.compile('(\S+)\s+(\S+)\s+\d+\s+\w+\s+(\S+)')
-
         objects = dict()
+        if isinstance(data, str):
+            # if there are no neighbors the show command returns
+            # ERROR: No neighbour information
+            if data.startswith('ERROR'):
+                return dict()
+
+            lines = data.split('\n')
+            regex = re.compile('(\S+)\s+(\S+)\s+\d+\s+\w+\s+(\S+)')
+
+            for item in data.split('\n')[4:-1]:
+                match = regex.match(item)
+                if match:
+                    nbor = {'host': match.group(1), 'port': match.group(3)}
+                    if match.group(2) not in objects:
+                        objects[match.group(2)] = []
+                    objects[match.group(2)].append(nbor)
+
+        elif isinstance(data, dict):
+            data = data['TABLE_nbor']['ROW_nbor']
+            if isinstance(data, dict):
+                data = [data]
+
+            for item in data:
+                local_intf = item['l_port_id']
+                if local_intf not in objects:
+                    objects[local_intf] = list()
+                nbor = dict()
+                nbor['port'] = item['port_id']
+                nbor['host'] = item['chassis_id']
+                objects[local_intf].append(nbor)
 
-        for item in data.split('\n')[4:-1]:
-            match = regex.match(item)
-            if match:
-                nbor = {'host': match.group(1), 'port': match.group(3)}
-                if match.group(2) not in objects:
-                    objects[match.group(2)] = []
-                objects[match.group(2)].append(nbor)
         return objects
 
     def parse_ipv6_interfaces(self, data):

test/integration/targets/nxos_facts/tasks/nxapi.yaml

@@ -8,8 +8,21 @@
 - name: set test_items
   set_fact: test_items="{{ test_cases.files | map(attribute='path') | list }}"
 
+- name: enable nxapi
+  nxos_config:
+    lines:
+      - feature nxapi
+      - nxapi http port 80
+    provider: "{{ cli }}"
+
 - name: run test case
   include: "{{ test_case_to_run }}"
   with_items: "{{ test_items }}"
   loop_control:
     loop_var: test_case_to_run
+
+- name: disable nxapi
+  nxos_config:
+    lines:
+      - no feature nxapi
+    provider: "{{ cli }}"