Add molecule tests

README.md

@@ -77,6 +77,12 @@ None. But, Grafana Agent's configuration file has had some breaking changes rece
 
 See an example playbook I run for my home-lab [here](https://github.com/nleiva/ansible-home/blob/main/grafana-cloud.yml).
 
+## Testing
+
+The role is tested using [Molecule](https://molecule.readthedocs.io/en/latest/). Dependencies for testing are `podman` and its plugin for Molecule.
+
+Run `molecule test` in the repository root to test the role.
+
 ## License
 
 GPL-3.0 License

molecule/default/converge.yml

@@ -0,0 +1,22 @@
+---
+- name: Converge
+  hosts: all
+
+  vars:
+    # Bogus values to avoid failure in
+    # Grafana agent template rendering
+    prometheus_user: alice
+    grafana_api_key: bob
+
+  pre_tasks:
+    # Update the APT cache to prevent
+    # failue when installing unzip
+    - name: Update APT cache
+      when: ansible_os_family == "Debian"
+      ansible.builtin.apt:
+        update_cache: true
+
+  tasks:
+    - name: "Include ansible-role-grafana_agent"
+      ansible.builtin.include_role:
+        name: "ansible-role-grafana_agent"

molecule/default/molecule.yml

@@ -0,0 +1,24 @@
+---
+dependency:
+  name: galaxy
+
+driver:
+  name: podman
+
+platforms:
+  - name: debian
+    image: quay.io/nleiva/grafana-agent-role-debian
+    pre_build_image: true
+    command: /lib/systemd/systemd
+    privileged: true
+    tmpfs:
+      - /run
+      - /tmp
+    volumes:
+      - /sys/fs/cgroup:/sys/fs/cgroup:ro
+
+provisioner:
+  name: ansible
+
+verifier:
+  name: ansible

templates/grafana-agent.service.j2

@@ -3,7 +3,7 @@ Description=Grafana Cloud agent
 
 [Service]
 Type=simple
-ExecStart={{ agent_location }}/agent-linux-{{ grafana_agent_type[ansible_architecture] }} --config.file={{ config_location }}/agent-config.yaml
+ExecStart={{ agent_location }}/grafana-agent-linux-{{ grafana_agent_type[ansible_architecture] }} --config.file={{ config_location }}/agent-config.yaml
 Restart=always
 
 [Install]