added custom scenario, and some unit tests

defaults/main.yml

@@ -4,7 +4,7 @@ manage_netplan_config_file: /etc/netplan/ansible-config.yaml # this MUST be .yam
 manage_netplan_renderer: networkd # supported value is 'NetworkManager' or 'networkd'
 manage_netplan_remove_existing: false
 manage_netplan_search_domain: example.org
-manage_netplan_install: false
+manage_netplan_install: true
 manage_netplan_apply: false
 manage_netplan_configuration: {}
   # network:

molecule/default/requirements.yml

@@ -0,0 +1,3 @@
+---
+# requirements file for molecule
+roles: []

molecule/default/tests/test_default.py

@@ -3,8 +3,16 @@
 
 def test_hosts_file(host):
     """Validate /etc/hosts file."""
-    f = host.file("/etc/hosts")
+    etc_hosts = host.file("/etc/hosts")
+    assert etc_hosts.exists
+    assert etc_hosts.user == "root"
+    assert etc_hosts.group == "root"
 
-    assert f.exists
-    assert f.user == "root"
-    assert f.group == "root"
+def test_netplan_storage(host):
+    """Validate /etc/netplan directory."""
+    etc_netplan = host.file("/etc/netplan")
+    assert etc_netplan.exists
+    assert etc_netplan.is_directory
+    assert etc_netplan.user == "root"
+    assert etc_netplan.group =="root"
+    assert etc_netplan.mode == 0o755

molecule/with_custom_config/converge.yml

@@ -0,0 +1,7 @@
+---
+- name: Converge
+  hosts: all
+  tasks:
+    - name: "Include ednxzu.manage_netplan"
+      ansible.builtin.include_role:
+        name: "ednxzu.manage_netplan"

molecule/with_custom_config/group_vars/all.yml

@@ -10,14 +10,10 @@ manage_netplan_configuration:
     version: 2
     ethernets:
       eth1:
-        match:
-          macaddress: 0c:c4:7a:4d:50:a2
         dhcp4: false
         link-local: []
         set-name: eth1
       eth2:
-        match:
-          macaddress: 0c:c4:7a:4d:50:a3
         dhcp4: true
         mtu: 1500
         link-local: []

molecule/with_custom_config/molecule.yml

@@ -0,0 +1,41 @@
+---
+dependency:
+  name: galaxy
+  options:
+    requirements-file: ./requirements.yml
+driver:
+  name: docker
+platforms:
+  - name: instance
+    image: geerlingguy/docker-${MOLECULE_TEST_OS}-ansible
+    command: ""
+    volumes:
+      - /sys/fs/cgroup:/sys/fs/cgroup
+    cgroupns_mode: host
+    privileged: true
+    pre_build_image: true
+provisioner:
+  name: ansible
+  config_options:
+    defaults:
+      remote_tmp: /tmp/.ansible
+verifier:
+  name: testinfra
+lint: |
+  yamllint -c .yamllint .
+  ansible-lint
+scenario:
+  name: with_custom_config
+  test_sequence:
+    - dependency
+    - lint
+    - cleanup
+    - destroy
+    - syntax
+    - create
+    - prepare
+    - converge
+    - idempotence
+    - verify
+    - cleanup
+    - destroy

molecule/with_custom_config/requirements.yml

@@ -0,0 +1,3 @@
+---
+# requirements file for molecule
+roles: []

molecule/with_custom_config/tests/conftest.py

@@ -0,0 +1,22 @@
+"""PyTest Fixtures."""
+from __future__ import absolute_import
+
+import os
+
+import pytest
+
+
+def pytest_runtest_setup(item):
+    """Run tests only when under molecule with testinfra installed."""
+    try:
+        import testinfra
+    except ImportError:
+        pytest.skip("Test requires testinfra", allow_module_level=True)
+    if "MOLECULE_INVENTORY_FILE" in os.environ:
+        pytest.testinfra_hosts = testinfra.utils.ansible_runner.AnsibleRunner(
+            os.environ["MOLECULE_INVENTORY_FILE"]
+        ).get_hosts("all")
+    else:
+        pytest.skip(
+            "Test should run only from inside molecule.", allow_module_level=True
+        )

molecule/with_custom_config/tests/test_default.py

@@ -0,0 +1,18 @@
+"""Role testing files using testinfra."""
+
+
+def test_hosts_file(host):
+    """Validate /etc/hosts file."""
+    etc_hosts = host.file("/etc/hosts")
+    assert etc_hosts.exists
+    assert etc_hosts.user == "root"
+    assert etc_hosts.group == "root"
+
+def test_netplan_storage(host):
+    """Validate /etc/netplan directory."""
+    etc_netplan = host.file("/etc/netplan")
+    assert etc_netplan.exists
+    assert etc_netplan.is_directory
+    assert etc_netplan.user == "root"
+    assert etc_netplan.group =="root"
+    assert etc_netplan.mode == 0o755