Switch tests to use Molecule.

.gitignore

@@ -1,2 +1,3 @@
 *.retry
-tests/test.sh
+*/__pycache__
+*.pyc

.travis.yml

@@ -1,29 +1,29 @@
 ---
+language: python
 services: docker
 
 env:
-  - distro: centos7
-  - distro: centos6
-  - distro: fedora27
-  - distro: ubuntu1604
-  - distro: ubuntu1404
-  - distro: ubuntu1204
-  - distro: debian8
+  global:
+    - ROLE_NAME: ansible
+  matrix:
+    - MOLECULE_DISTRO: centos7
+    - MOLECULE_DISTRO: fedora27
+    - MOLECULE_DISTRO: ubuntu1804
+    - MOLECULE_DISTRO: debian9
+
+install:
+  # Install test dependencies.
+  - pip install molecule docker
+
+before_script:
+  # Use actual Ansible Galaxy role name for the project directory.
+  - cd ../
+  - mv ansible-role-$ROLE_NAME geerlingguy.$ROLE_NAME
+  - cd geerlingguy.$ROLE_NAME
 
 script:
-  # Configure test script so we can run extra tests after playbook is run.
-  - export container_id=$(date +%s)
-  - export cleanup=false
-
-  # Download test shim.
-  - wget -O ${PWD}/tests/test.sh https://gist.githubusercontent.com/geerlingguy/73ef1e5ee45d8694570f334be385e181/raw/
-  - chmod +x ${PWD}/tests/test.sh
-
   # Run tests.
-  - ${PWD}/tests/test.sh
-
-  # Ensure Ansible is installed (contrived... since it's already installed).
-  - 'docker exec --tty ${container_id} env TERM=xterm ansible --version'
+  - molecule test
 
 notifications:
   webhooks: https://galaxy.ansible.com/api/v1/notifications/

molecule/default/molecule.yml

@@ -0,0 +1,25 @@
+---
+dependency:
+  name: galaxy
+driver:
+  name: docker
+lint:
+  name: yamllint
+platforms:
+  - name: instance
+    image: geerlingguy/docker-${MOLECULE_DISTRO:-centos7}-ansible
+    command: ${MOLECULE_DOCKER_COMMAND:-"sleep infinity"}
+    privileged: true
+    pre_build_image: true
+provisioner:
+  name: ansible
+  lint:
+    name: ansible-lint
+  playbooks:
+    converge: ${MOLECULE_PLAYBOOK:-playbook.yml}
+scenario:
+  name: default
+verifier:
+  name: testinfra
+  lint:
+    name: flake8

molecule/default/playbook.yml

@@ -0,0 +1,7 @@
+---
+- name: Converge
+  hosts: all
+  become: true
+
+  roles:
+    - role: geerlingguy.ansible

molecule/default/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'

tests/test.sh

@@ -0,0 +1,96 @@
+#!/bin/bash
+#
+# Ansible role test shim.
+#
+# Usage: [OPTIONS] ./tests/test.sh
+#   - distro: a supported Docker distro version (default = "centos7")
+#   - playbook: a playbook in the tests directory (default = "test.yml")
+#   - cleanup: whether to remove the Docker container (default = true)
+#   - container_id: the --name to set for the container (default = timestamp)
+
+# Exit on any individual command failure.
+set -e
+
+# Pretty colors.
+red='\033[0;31m'
+green='\033[0;32m'
+neutral='\033[0m'
+
+timestamp=$(date +%s)
+
+# Allow environment variables to override defaults.
+distro=${distro:-"centos7"}
+playbook=${playbook:-"test.yml"}
+cleanup=${cleanup:-"true"}
+container_id=${container_id:-$timestamp}
+
+## Set up vars for Docker setup.
+# CentOS 7
+if [ $distro = 'centos7' ]; then
+  init="/usr/lib/systemd/systemd"
+  opts="--privileged --volume=/sys/fs/cgroup:/sys/fs/cgroup:ro"
+# CentOS 6
+elif [ $distro = 'centos6' ]; then
+  init="/sbin/init"
+  opts=""
+# Ubuntu 16.04
+elif [ $distro = 'ubuntu1604' ]; then
+  init="/lib/systemd/systemd"
+  opts="--privileged --volume=/sys/fs/cgroup:/sys/fs/cgroup:ro"
+# Ubuntu 14.04
+elif [ $distro = 'ubuntu1404' ]; then
+  init="/sbin/init"
+  opts=""
+# Ubuntu 12.04
+elif [ $distro = 'ubuntu1204' ]; then
+  init="/sbin/init"
+  opts=""
+# Debian 8
+elif [ $distro = 'debian8' ]; then
+  init="/lib/systemd/systemd"
+  opts="--privileged --volume=/sys/fs/cgroup:/sys/fs/cgroup:ro"
+# Fedora 24
+elif [ $distro = 'fedora24' ]; then
+  init="/usr/lib/systemd/systemd"
+  opts="--privileged --volume=/sys/fs/cgroup:/sys/fs/cgroup:ro"
+fi
+
+# Run the container using the supplied OS.
+printf ${green}"Starting Docker container: geerlingguy/docker-$distro-ansible."${neutral}"\n"
+docker pull geerlingguy/docker-$distro-ansible:latest
+docker run --detach --volume="$PWD":/etc/ansible/roles/role_under_test:rw --name $container_id $opts geerlingguy/docker-$distro-ansible:latest $init
+
+printf "\n"
+
+# Install requirements if `requirements.yml` is present.
+if [ -f "$PWD/tests/requirements.yml" ]; then
+  printf ${green}"Requirements file detected; installing dependencies."${neutral}"\n"
+  docker exec --tty $container_id env TERM=xterm ansible-galaxy install -r /etc/ansible/roles/role_under_test/tests/requirements.yml
+fi
+
+printf "\n"
+
+# Test Ansible syntax.
+printf ${green}"Checking Ansible playbook syntax."${neutral}
+docker exec --tty $container_id env TERM=xterm ansible-playbook /etc/ansible/roles/role_under_test/tests/$playbook --syntax-check
+
+printf "\n"
+
+# Run Ansible playbook.
+printf ${green}"Running command: docker exec $container_id env TERM=xterm ansible-playbook /etc/ansible/roles/role_under_test/tests/$playbook"${neutral}
+docker exec $container_id env TERM=xterm env ANSIBLE_FORCE_COLOR=1 ansible-playbook /etc/ansible/roles/role_under_test/tests/$playbook
+
+# Run Ansible playbook again (idempotence test).
+printf ${green}"Running playbook again: idempotence test"${neutral}
+idempotence=$(mktemp)
+docker exec $container_id ansible-playbook /etc/ansible/roles/role_under_test/tests/$playbook | tee -a $idempotence
+tail $idempotence \
+  | grep -q 'changed=0.*failed=0' \
+  && (printf ${green}'Idempotence test: pass'${neutral}"\n") \
+  || (printf ${red}'Idempotence test: fail'${neutral}"\n" && exit 1)
+
+# Remove the Docker container (if configured).
+if [ "$cleanup" = true ]; then
+  printf "Removing Docker container...\n"
+  docker rm -f $container_id
+fi