Adding New Model for Configure Buffer Pool on Onyx Switches (#55082)

* Adding New Model for Configure Buffer Pool on Onyx Switches

Signed-off-by: Anas Badaha <anasb@mellanox.com>

* Fix Pep8 Failures in onyx_buffer_pool.py

Signed-off-by: Anas Badaha <anasb@mellanox.com>

test/units/modules/network/onyx/fixtures/onyx_buffer_pool.cfg

@@ -0,0 +1,15 @@
+{
+    "roce": [
+        {
+            "Type": "lossless",
+            "Switch Priorities": "3",
+            "Max Usage": "0",
+            "Usage": "0",
+            "Memory actual": "5.9M",
+            "Memory [%]": "50.00"
+        }
+    ],
+    "Exception list": {
+        "message": "N/A"
+    }
+}

test/units/modules/network/onyx/test_onyx_buffer_pool.py

@@ -0,0 +1,78 @@
+#
+# Copyright: Ansible Project
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
+
+# Make coding more python3-ish
+from __future__ import (absolute_import, division, print_function)
+__metaclass__ = type
+
+from units.compat.mock import patch
+from ansible.modules.network.onyx import onyx_buffer_pool
+from units.modules.utils import set_module_args
+from .onyx_module import TestOnyxModule, load_fixture
+
+
+class TestOnyxBufferPoolModule(TestOnyxModule):
+
+    module = onyx_buffer_pool
+    buffer_pool_configured = False
+
+    def setUp(self):
+        super(TestOnyxBufferPoolModule, self).setUp()
+        self.mock_get_buffer_pool_config = patch.object(
+            onyx_buffer_pool.OnyxBufferPoolModule, "_show_traffic_pool")
+        self.get_buffer_pool_config = self.mock_get_buffer_pool_config.start()
+
+        self.mock_load_config = patch(
+            'ansible.module_utils.network.onyx.onyx.load_config')
+        self.load_config = self.mock_load_config.start()
+
+    def tearDown(self):
+        super(TestOnyxBufferPoolModule, self).tearDown()
+        self.mock_get_buffer_pool_config.stop()
+        self.mock_load_config.stop()
+
+    def load_fixtures(self, commands=None, transport='cli'):
+        buffer_pool_config_file = 'onyx_buffer_pool.cfg'
+        self.get_buffer_pool_config.return_value = None
+
+        if self.buffer_pool_configured is True:
+            buffer_pool_data = load_fixture(buffer_pool_config_file)
+            self.get_buffer_pool_config.return_value = buffer_pool_data
+
+        self.load_config.return_value = None
+
+    def test_buffer_pool_no_change(self):
+        self.buffer_pool_configured = True
+        set_module_args(dict(name="roce", pool_type="lossless",
+                             memory_percent=50.0, switch_priority=3))
+        self.execute_module(changed=False)
+
+    def test_buffer_pool_with_change(self):
+        set_module_args(dict(name="roce", pool_type="lossless",
+                             memory_percent=50.0, switch_priority=3))
+        commands = ["traffic pool roce type lossless",
+                    "traffic pool roce memory percent 50.0",
+                    "traffic pool roce map switch-priority 3"
+                    ]
+        self.execute_module(changed=True, commands=commands)
+
+    def test_memory_percent_with_change(self):
+        self.buffer_pool_configured = True
+        set_module_args(dict(name="roce", pool_type="lossless",
+                             memory_percent=60.0, switch_priority=3))
+        commands = ["traffic pool roce memory percent 60.0"]
+        self.execute_module(changed=True, commands=commands)
+
+    def test_switch_priority_with_change(self):
+        self.buffer_pool_configured = True
+        set_module_args(dict(name="roce", pool_type="lossless",
+                             memory_percent=50.0, switch_priority=5))
+        commands = ["traffic pool roce map switch-priority 5"]
+        self.execute_module(changed=True, commands=commands)
+
+    def test_pool_type_with_change(self):
+        self.buffer_pool_configured = True
+        set_module_args(dict(name="roce", memory_percent=50.0, switch_priority=3))
+        commands = ["traffic pool roce type lossy"]
+        self.execute_module(changed=True, commands=commands)