tests: Prioritize find link info by permanent MAC address, with fallb…

…ack to current address

Add the integration test `tests_mac_address_match.yml` to verify that
the commit "Prioritize find link info by permanent MAC address, with
fallback to current address" (c341683) can properly resolve the
scenarios where multiple network interfaces share the same current MAC
address, leading to potential ambiguity in link matching (for example,
Virtual interfaces or VLANs, which often lack a valid perm-address and
rely on the parent interface's address).

Notice that the test `tests_mac_address_match.yml` will be skipped in
upstream testing and it will only be manually tested downstream since it
requires to know the mac address to match when configuring vlan's
parent.

Signed-off-by: Wen Liang <liangwen12year@gmail.com>

tests/playbooks/tests_mac_address_match.yml

@@ -0,0 +1,43 @@
+# SPDX-License-Identifier: BSD-3-Clause
+---
+- name: Play for testing MAC address match on device
+  hosts: all
+  vars_prompt:
+    - name: "interface"
+      prompt: "Please provide the interface name (e.g., eno2)"
+      private: no
+    - name: "mac"
+      prompt: "Please provide the MAC address to match (e.g., ec:f4:BB:d3:EC:92)"
+      private: no
+  vars:
+    profile: "{{ interface }}"
+    vlan_profile: "{{ interface }}.3732"
+    lsr_fail_debug:
+      - __network_connections_result
+  tags:
+    - "tests::mac"
+  tasks:
+    - name: Show playbook name
+      debug:
+        msg: "this is: playbooks/tests_mac_address_match.yml"
+      tags:
+        - always
+
+    - name: Test the MAC address match
+      tags:
+        - tests::mac:match
+      block:
+        - name: Include the task 'run_test.yml'
+          include_tasks: tasks/run_test.yml
+          vars:
+            lsr_description: Test MAC address match on device
+            lsr_setup:
+              - tasks/assert_profile_absent.yml
+            lsr_test:
+              - tasks/create_mac_address_match.yml
+            lsr_assert:
+              - tasks/assert_profile_present.yml
+              - tasks/assert_network_connections_succeeded.yml
+            lsr_cleanup:
+              - tasks/cleanup_vlan_and_parent_profile+device.yml
+              - tasks/check_network_dns.yml

tests/tasks/assert_network_connections_succeeded.yml

@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: BSD-3-Clause
+---
+- name: Assert that configuring network connections is succeeded
+  assert:
+    that:
+      - __network_connections_result.failed == false
+    msg: Configuring network connections is failed with the error
+      "{{ __network_connections_result.stderr }}"

tests/tasks/cleanup_vlan_and_parent_profile+device.yml

@@ -0,0 +1,23 @@
+# SPDX-License-Identifier: BSD-3-Clause
+---
+- name: Clean up the test devices and the connection profiles
+  tags:
+    - "tests::cleanup"
+  block:
+    - name: Import network role
+      import_role:
+        name: linux-system-roles.network
+      vars:
+        network_connections:
+          - name: "{{ profile }}"
+            persistent_state: absent
+            state: down
+          - name: "{{ vlan_profile }}"
+            persistent_state: absent
+            state: down
+      failed_when: false
+    - name: Delete the device '{{ interface }}'
+      command: ip link del {{ interface }}
+      failed_when: false
+      changed_when: false
+...