Pluribus networks fabric local module with UT (#55872)

* Pluribus networks fabric local module with UT

* Sanity fix

* Ansible doc standards

* Unit test fix

test/units/modules/network/netvisor/test_pn_fabric_local.py

@@ -0,0 +1,49 @@
+# Copyright: (c) 2018, Pluribus Networks
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
+
+from __future__ import (absolute_import, division, print_function)
+__metaclass__ = type
+
+import json
+
+from units.compat.mock import patch
+from ansible.modules.network.netvisor import pn_fabric_local
+from units.modules.utils import set_module_args
+from .nvos_module import TestNvosModule, load_fixture
+
+
+class TestFabricLocalModule(TestNvosModule):
+
+    module = pn_fabric_local
+
+    def setUp(self):
+        self.mock_run_nvos_commands = patch('ansible.modules.network.netvisor.pn_fabric_local.run_cli')
+        self.run_nvos_commands = self.mock_run_nvos_commands.start()
+
+    def tearDown(self):
+        self.mock_run_nvos_commands.stop()
+
+    def run_cli_patch(self, module, cli, state_map):
+        if state_map['update'] == 'fabric-local-modify':
+            results = dict(
+                changed=True,
+                cli_cmd=cli
+            )
+        module.exit_json(**results)
+
+    def load_fixtures(self, commands=None, state=None, transport='cli'):
+        self.run_nvos_commands.side_effect = self.run_cli_patch
+
+    def test_fabric_local_modify_t1(self):
+        set_module_args({'pn_cliswitch': 'sw01', 'pn_fabric_advertisement_network': 'mgmt-only',
+                         'state': 'update'})
+        result = self.execute_module(changed=True, state='update')
+        expected_cmd = ' switch sw01 fabric-local-modify  fabric-network mgmt fabric-advertisement-network mgmt-only'
+        self.assertEqual(result['cli_cmd'], expected_cmd)
+
+    def test_fabric_local_modify_t2(self):
+        set_module_args({'pn_cliswitch': 'sw01', 'pn_fabric_network': 'mgmt',
+                         'state': 'update'})
+        result = self.execute_module(changed=True, state='update')
+        expected_cmd = ' switch sw01 fabric-local-modify  fabric-network mgmt'
+        self.assertEqual(result['cli_cmd'], expected_cmd)