Changed to use Molecule Wrapper for tests (#29)

To make it easier for other developers to test the role.

.moleculew/ansible_version

@@ -0,0 +1 @@
+2.6.4

.moleculew/docker_lib_version

@@ -0,0 +1 @@
+3.5.0

.moleculew/molecule_version

@@ -0,0 +1 @@
+2.17.0

.moleculew/python_version

@@ -0,0 +1 @@
+2.7.15

.travis.yml

@@ -2,10 +2,13 @@
 language: python
 python: '2.7'
 
-# Spin off separate builds for each of the following versions of Ansible
 env:
-  - ANSIBLE_VERSION=2.4.6
-  - ANSIBLE_VERSION=2.6.3
+  global:
+    - MOLECULEW_USE_SYSTEM=true
+  matrix:
+    # Spin off separate builds for each of the following versions of Ansible
+    - MOLECULEW_ANSIBLE=2.4.6
+    - MOLECULEW_ANSIBLE=2.6.3
 
 # Require the standard build environment
 sudo: required
@@ -17,37 +20,15 @@ dist: trusty
 services:
   - docker
 
-# Cache Ansible and Molecule to speed things up
-cache:
-  - pip
-
-before_install:
-  - sudo apt-get -qq update
-  - sudo apt-get install -o Dpkg::Options::='--force-confold' --force-yes -y docker-ce
-
 install:
-  # Install Ansible
-  - pip install "ansible~=$ANSIBLE_VERSION"
-
-  # Install Python API for Docker (required by Molecule Docker driver)
-  # Limit version as workaround for: https://github.com/ansible/ansible/issues/35612
-  - pip install 'docker<3.0'
-
-  # Install Molecule
-  - pip install 'molecule==2.16.0'
-
-  # Check Ansible version
-  - ansible --version
-
-  # Check Molecule version
-  - molecule --version
+  # Install dependencies
+  - ./moleculew wrapper-install
 
-  # Build the Docker images
-  - molecule create --scenario-name=$MOLECULE_SCENARIO
-  - molecule destroy --scenario-name=$MOLECULE_SCENARIO
+  # Display versions
+  - ./moleculew wrapper-versions
 
 script:
-  - molecule test --scenario-name=$MOLECULE_SCENARIO
+  - ./moleculew test
 
 branches:
   only:

README.md

@@ -81,12 +81,20 @@ To develop or test you'll need to have installed the following:
 * [Ansible](https://www.ansible.com/)
 * [Molecule](http://molecule.readthedocs.io/)
 
-To test this role run the following command from the project root:
+Because the above can be tricky to install, this project includes
+[Molecule Wrapper](https://github.com/gantsign/molecule-wrapper). Molecule
+Wrapper is a shell script that installs Molecule and it's dependencies (apart
+from Linux) and then executes Molecule with the command you pass it.
+
+To test this role using Molecule Wrapper run the following command from the
+project root:
 
 ```bash
-molecule test
+./moleculew test
 ```
 
+Note: some of the dependencies need `sudo` permission to install.
+
 License
 -------