Add molecule tests

roles/hostname/molecule/default/converge.yml

@@ -0,0 +1,9 @@
+---
+- name: Converge
+  hosts: all
+  vars:
+    hostname_update_etc_hosts: false
+  tasks:
+    - name: Include hostname role
+      include_role:
+        name: hostname

roles/hostname/molecule/default/molecule.yml

@@ -0,0 +1,25 @@
+---
+scenario:
+  name: default
+dependency:
+  name: galaxy
+  enabled: false
+driver:
+  name: podman
+platforms:
+  - name: debian11
+    image: jrei/systemd-debian:11
+    command: /lib/systemd/systemd
+    tmpfs:
+      - /run
+      - /tmp
+    volumes:
+      - /sys/fs/cgroup:/sys/fs/cgroup:ro
+provisioner:
+  name: ansible
+verifier:
+  name: ansible
+lint: |
+  yamllint .
+  ansible-lint
+  flake8

roles/hostname/molecule/default/verify.yml

@@ -0,0 +1,17 @@
+---
+- name: Verify
+  hosts: all
+  tasks:
+    - name: Get /etc/hostname
+      command:
+        cmd: cat /etc/hostname
+      register: hostname_content
+      changed_when: false
+
+    - name: Print /etc/hostname
+      debug:
+        msg: "{{ hostname_content.stdout }}"
+
+    - name: Assert debian11 in /etc/hostname
+      assert:
+        that: "'debian11' in hostname_content.stdout"