.drone.yml

@@ -22,10 +22,7 @@ steps:
   #   depends_on: [ clone ]
 
   - name: molecule
-    image: centos:7
+    image: quay.io/ansible/molecule
     pull: always
     commands:
-      - yum install -y epel-release
-      - yum install -y python-pip
-      - pip install ansible molecule -qq
-      - molecule --debug test
+      - molecule test --scenario-name gce-centos-7

.yamllint

@@ -0,0 +1,13 @@
+extends: default
+
+rules:
+  braces:
+    max-spaces-inside: 1
+    level: error
+  brackets:
+    max-spaces-inside: 1
+    level: error
+  line-length: disable
+  # NOTE(retr0h): Templates no longer fail this lint rule.
+  #               Uncomment if running old Molecule templates.
+  # truthy: disable

molecule/gce-centos-7/INSTALL.rst

@@ -0,0 +1,16 @@
+*******
+Google Cloud Engine driver installation guide
+*******
+
+Requirements
+============
+
+* A GCE credentials rc file
+* apache-libcloud
+
+Install
+=======
+
+.. code-block:: bash
+
+    $ sudo pip install apache-libcloud

molecule/gce-centos-7/create.yml

@@ -0,0 +1,65 @@
+---
+- name: Create
+  hosts: localhost
+  connection: local
+  gather_facts: false
+  no_log: "{{ not (lookup('env', 'MOLECULE_DEBUG') | bool or molecule_yml.provisioner.log|default(false) | bool) }}"
+  vars:
+    ssh_port: 22
+    ssh_user: "{{ lookup('env', 'USER') }}"
+    ssh_identity_file: "{{ lookup('env', 'HOME') }}/.ssh/google_compute_engine"
+  tasks:
+    - name: Create molecule instance(s)
+      gce:
+        instance_names: "{{ item.name }}"
+        zone: "{{ item.zone }}"
+        machine_type: "{{ item.machine_type }}"
+        image: "{{ item.image }}"
+        service_account_email: "{{ lookup('env', 'GCE_SERVICE_ACCOUNT_EMAIL') }}"
+        credentials_file: "{{ lookup('env', 'GCE_CREDENTIALS_FILE') }}"
+        project_id: "{{ lookup('env', 'GCE_PROJECT_ID') }}"
+      register: server
+      with_items: "{{ molecule_yml.platforms }}"
+      async: 7200
+      poll: 0
+
+    - name: Wait for instance(s) creation to complete
+      async_status:
+        jid: "{{ item.ansible_job_id }}"
+      register: gce_jobs
+      until: gce_jobs.finished
+      retries: 300
+      with_items: "{{ server.results }}"
+
+    # Mandatory configuration for Molecule to function.
+
+    - name: Populate instance config dict
+      set_fact:
+        instance_conf_dict: {
+          'instance': "{{ item.instance_data[0].name }}",
+          'address': "{{ item.instance_data[0].public_ip }}",
+          'user': "{{ ssh_user }}",
+          'port': "{{ ssh_port }}",
+          'identity_file': "{{ ssh_identity_file }}", }
+      with_items: "{{ gce_jobs.results }}"
+      register: instance_config_dict
+      when: server.changed | bool
+
+    - name: Convert instance config dict to a list
+      set_fact:
+        instance_conf: "{{ instance_config_dict.results | map(attribute='ansible_facts.instance_conf_dict') | list }}"
+      when: server.changed | bool
+
+    - name: Dump instance config
+      copy:
+        content: "{{ instance_conf | to_json | from_json | molecule_to_yaml | molecule_header }}"
+        dest: "{{ molecule_instance_config }}"
+      when: server.changed | bool
+
+    - name: Wait for SSH
+      wait_for:
+        port: "{{ ssh_port }}"
+        host: "{{ item.address }}"
+        search_regex: SSH
+        delay: 10
+      with_items: "{{ lookup('file', molecule_instance_config) | molecule_from_yaml }}"

molecule/gce-centos-7/destroy.yml

@@ -0,0 +1,39 @@
+---
+- name: Destroy
+  hosts: localhost
+  connection: local
+  gather_facts: false
+  no_log: "{{ not (lookup('env', 'MOLECULE_DEBUG') | bool or molecule_yml.provisioner.log|default(false) | bool) }}"
+  tasks:
+    - name: Destroy molecule instance(s)
+      gce:
+        instance_names: "{{ item.name }}"
+        state: absent
+        zone: "{{ item.zone }}"
+        service_account_email: "{{ lookup('env', 'GCE_SERVICE_ACCOUNT_EMAIL') }}"
+        credentials_file: "{{ lookup('env', 'GCE_CREDENTIALS_FILE') }}"
+        project_id: "{{ lookup('env', 'GCE_PROJECT_ID') }}"
+      register: server
+      with_items: "{{ molecule_yml.platforms }}"
+      async: 7200
+      poll: 0
+
+    - name: Wait for instance(s) deletion to complete
+      async_status:
+        jid: "{{ item.ansible_job_id }}"
+      register: gce_jobs
+      until: gce_jobs.finished
+      retries: 300
+      with_items: "{{ server.results }}"
+
+    # Mandatory configuration for Molecule to function.
+
+    - name: Populate instance config
+      set_fact:
+        instance_conf: {}
+
+    - name: Dump instance config
+      copy:
+        content: "{{ instance_conf | to_json | from_json | molecule_to_yaml | molecule_header }}"
+        dest: "{{ molecule_instance_config }}"
+      when: server.changed | bool

molecule/gce-centos-7/molecule.yml

@@ -0,0 +1,23 @@
+---
+dependency:
+  name: galaxy
+driver:
+  name: gce
+lint:
+  name: yamllint
+  enabled: False
+platforms:
+  - name: instance
+    zone: europe-north1-a
+    machine_type: f1-micro
+    image: centos-7
+provisioner:
+  name: ansible
+  lint:
+    name: ansible-lint
+scenario:
+  name: gce-centos-7
+verifier:
+  name: testinfra
+  lint:
+    name: flake8

molecule/gce-centos-7/playbook.yml

@@ -0,0 +1,5 @@
+---
+- name: Converge
+  hosts: all
+  roles:
+    - role: xoxys.nginx

molecule/gce-centos-7/prepare.yml

@@ -0,0 +1,9 @@
+---
+- name: Prepare
+  hosts: all
+  gather_facts: false
+  tasks:
+    - name: Install python for Ansible
+      raw: test -e /usr/bin/python || (apt -y update && apt install -y python-minimal python-zipstream)
+      become: true
+      changed_when: false

molecule/gce-centos-7/tests/test_default.py

@@ -0,0 +1,14 @@
+import os
+
+import testinfra.utils.ansible_runner
+
+testinfra_hosts = testinfra.utils.ansible_runner.AnsibleRunner(
+    os.environ['MOLECULE_INVENTORY_FILE']).get_hosts('all')
+
+
+def test_hosts_file(host):
+    f = host.file('/etc/hosts')
+
+    assert f.exists
+    assert f.user == 'root'
+    assert f.group == 'root'