Add EdgeOS facts module (#35871)

* Add edgeos_facts module and unit tests

* Add future import

test/units/modules/network/edgeos/test_edgeos_facts.py

@@ -0,0 +1,86 @@
+# (c) 2018 Red Hat Inc.
+#
+# This file is part of Ansible
+#
+# Ansible is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Ansible is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
+
+# Make coding more python3-ish
+from __future__ import (absolute_import, division, print_function)
+__metaclass__ = type
+
+import json
+
+from ansible.compat.tests.mock import patch
+from ansible.modules.network.edgeos import edgeos_facts
+from units.modules.utils import set_module_args
+from .edgeos_module import TestEdgeosModule, load_fixture
+
+
+class TestEdgeosFactsModule(TestEdgeosModule):
+
+    module = edgeos_facts
+
+    def setUp(self):
+        super(TestEdgeosFactsModule, self).setUp()
+        self.mock_run_commands = patch('ansible.modules.network.edgeos.edgeos_facts.run_commands')
+        self.run_commands = self.mock_run_commands.start()
+
+    def tearDown(self):
+        super(TestEdgeosFactsModule, self).tearDown()
+        self.mock_run_commands.stop()
+
+    def load_fixtures(self, commands=None):
+        def load_from_file(*args, **kwargs):
+            module, commands = args
+            output = list()
+
+            for item in commands:
+                try:
+                    obj = json.loads(item)
+                    command = obj['command']
+                except ValueError:
+                    command = item
+                filename = str(command).replace(' ', '_')
+                output.append(load_fixture(filename))
+            return output
+
+        self.run_commands.side_effect = load_from_file
+
+    def test_edgeos_facts_default(self):
+        set_module_args(dict(gather_subset='default'))
+        result = self.execute_module()
+        facts = result.get('ansible_facts')
+        self.assertEqual(len(facts), 5)
+        self.assertEqual(facts['ansible_net_hostname'].strip(), 'er01')
+        self.assertEqual(facts['ansible_net_version'], '1.9.7+hotfix.4')
+
+    def test_edgeos_facts_not_all(self):
+        set_module_args(dict(gather_subset='!all'))
+        result = self.execute_module()
+        facts = result.get('ansible_facts')
+        self.assertEqual(len(facts), 5)
+        self.assertEqual(facts['ansible_net_hostname'].strip(), 'er01')
+        self.assertEqual(facts['ansible_net_version'], '1.9.7+hotfix.4')
+
+    def test_edgeos_facts_exclude_most(self):
+        set_module_args(dict(gather_subset=['!neighbors', '!config']))
+        result = self.execute_module()
+        facts = result.get('ansible_facts')
+        self.assertEqual(len(facts), 5)
+        self.assertEqual(facts['ansible_net_hostname'].strip(), 'er01')
+        self.assertEqual(facts['ansible_net_version'], '1.9.7+hotfix.4')
+
+    def test_edgeos_facts_invalid_subset(self):
+        set_module_args(dict(gather_subset='cereal'))
+        result = self.execute_module(failed=True)