feat: added molecule tests

molecule/default/Dockerfile

@@ -0,0 +1,13 @@
+FROM docker.io/library/debian:stable
+
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+      python3 \
+      systemd \
+      systemd-sysv \
+      dbus \
+      ca-certificates && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/*
+
+CMD ["/usr/sbin/init"]

molecule/default/converge.yml

@@ -0,0 +1,6 @@
+#SPDX-License-Identifier: GPL-3.0-only
+---
+- name: Converge
+  hosts: all
+  roles:
+    - role: ansible_role_mail

molecule/default/molecule.yml

@@ -0,0 +1,64 @@
+#SPDX-License-Identifier: GPL-3.0-only
+---
+dependency:
+  name: galaxy
+  options:
+    requirements-file: molecule/default/requirements.yml
+
+driver:
+  name: podman
+
+platforms:
+  - name: debian-stable
+    image: docker.io/library/debian:stable
+    pre_build_image: false
+    dockerfile: Dockerfile
+    privileged: true
+    systemd: always
+    command: /usr/sbin/init
+
+  - name: debian-oldstable
+    image: docker.io/library/debian:oldstable
+    pre_build_image: false
+    dockerfile: Dockerfile
+    privileged: true
+    systemd: always
+    command: /usr/sbin/init
+
+  - name: ubuntu-latest
+    image: docker.io/library/ubuntu:latest
+    pre_build_image: false
+    dockerfile: Dockerfile
+    privileged: true
+    systemd: always
+    command: /usr/sbin/init
+
+  - name: ubuntu-jammy
+    image: docker.io/library/ubuntu:jammy
+    pre_build_image: false
+    dockerfile: Dockerfile
+    privileged: true
+    systemd: always
+    command: /usr/sbin/init
+
+provisioner:
+  name: ansible
+  env:
+    ANSIBLE_ROLES_PATH: "${MOLECULE_PROJECT_DIRECTORY}/.."
+  playbooks:
+    converge: converge.yml
+    verify: verify.yml
+
+scenario:
+  test_sequence:
+    - dependency
+    - destroy
+    - syntax
+    - create
+    - converge
+    - idempotence
+    - verify
+    - destroy
+
+verifier:
+  name: ansible

molecule/default/requirements.yml

@@ -0,0 +1,4 @@
+#SPDX-License-Identifier: GPL-3.0-only
+---
+collections:
+  - name: containers.podman

molecule/default/verify.yml

@@ -0,0 +1,37 @@
+#SPDX-License-Identifier: GPL-3.0-only
+---
+- name: Verify
+  hosts: all
+  tasks:
+    - name: Gather service facts
+      ansible.builtin.service_facts:
+
+    - name: Assert postfix service is present
+      ansible.builtin.assert:
+        that:
+          - "'postfix.service' in ansible_facts.services"
+
+    - name: Assert dovecot service is present
+      ansible.builtin.assert:
+        that:
+          - "'dovecot.service' in ansible_facts.services"
+
+    - name: Check postfix main.cf exists
+      ansible.builtin.stat:
+        path: /etc/postfix/main.cf
+      register: postfix_main_cf
+
+    - name: Assert postfix main.cf exists
+      ansible.builtin.assert:
+        that:
+          - postfix_main_cf.stat.exists
+
+    - name: Check dovecot.conf exists
+      ansible.builtin.stat:
+        path: /etc/dovecot/dovecot.conf
+      register: dovecot_conf
+
+    - name: Assert dovecot.conf exists
+      ansible.builtin.assert:
+        that:
+          - dovecot_conf.stat.exists