Add ios_banner module (#22687)

With unit and integration tests.

test/units/modules/network/ios/test_ios_banner.py

@@ -0,0 +1,59 @@
+# 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.ios import ios_banner
+from .ios_module import TestIosModule, load_fixture, set_module_args
+
+
+class TestIosBannerModule(TestIosModule):
+
+    module = ios_banner
+
+    def setUp(self):
+        self.mock_run_commands = patch('ansible.modules.network.ios.ios_banner.run_commands')
+        self.run_commands = self.mock_run_commands.start()
+
+        self.mock_load_config = patch('ansible.modules.network.ios.ios_banner.load_config')
+        self.load_config = self.mock_load_config.start()
+
+    def tearDown(self):
+        self.mock_run_commands.stop()
+        self.mock_load_config.stop()
+
+    def load_fixtures(self, commands=None):
+        self.run_commands.return_value = [load_fixture('ios_banner_show_banner.txt').strip()]
+        self.load_config.return_value = dict(diff=None, session='session')
+
+    def test_ios_banner_create(self):
+        set_module_args(dict(banner='login', text='test\nbanner\nstring'))
+        commands = ['banner login @\ntest\nbanner\nstring\n@']
+        self.execute_module(changed=True, commands=commands)
+
+    def test_ios_banner_remove(self):
+        set_module_args(dict(banner='login', state='absent'))
+        commands = ['no banner login']
+        self.execute_module(changed=True, commands=commands)
+
+    def test_ios_banner_nochange(self):
+        banner_text = load_fixture('ios_banner_show_banner.txt').strip()
+        set_module_args(dict(banner='login', text=banner_text))
+        self.execute_module()