Add a tox environment & dependencies for running molecule tests

.gitignore

@@ -57,3 +57,11 @@ ansible/kolla-venv/
 
 # Vagrant
 .vagrant
+
+# Molecule
+.molecule/
+
+# Pytest
+.cache/
+.pytest_cache/
+pytestdebug.log

.travis.yml

@@ -27,6 +27,8 @@ env:
     - TOX_ENV=ansible-syntax
     # Run ansible tests.
     - TOX_ENV=ansible
+    # Run molecule tests.
+    - TOX_ENV=molecule
 
 install:
   # Install tox in a virtualenv to ensure we have an up to date version.

test-requirements.txt

@@ -2,11 +2,12 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 
-hacking>=0.12.0,<0.13 # Apache-2.0
-
+ansible-lint>=3.0.0 # MIT
 bashate>=0.2 # Apache-2.0
 coverage>=4.0 # Apache-2.0
 doc8 # Apache-2.0
-sphinx>=1.5.1 # BSD
+docker<3 # Apache-2.0
+hacking>=0.12.0,<0.13 # Apache-2.0
+molecule<3 # MIT
 oslotest>=1.10.0 # Apache-2.0
-ansible-lint>=3.0.0 # MIT
+sphinx>=1.5.1 # BSD

tools/test-molecule.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+
+# Run molecule tests. Any arguments passed to this script will be passed onto
+# molecule.
+
+set -e
+
+molecules="$(find ansible/roles/ -name molecule -type d)"
+
+failed=0
+ran=0
+for molecule in $molecules; do
+    pushd $(dirname $molecule)
+    if ! molecule test --all $*; then
+        failed=$((failed + 1))
+    fi
+    ran=$((ran + 1))
+    popd
+done
+
+if [[ $failed -ne 0 ]]; then
+    echo "Failed $failed / $ran molecule tests"
+    exit 1
+fi
+echo "Ran $ran molecule tests successfully"

tox.ini

@@ -52,6 +52,15 @@ commands =
         {toxinidir}/ansible/roles/*/tests/main.yml \
         {posargs}"
 
+[testenv:molecule]
+install_command = pip install -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt?h=stable/pike} {opts} {packages}
+commands =
+    # Install ansible role dependencies from Galaxy.
+    ansible-galaxy install \
+        -r {toxinidir}/requirements.yml \
+        -p {toxinidir}/ansible/roles
+    {toxinidir}/tools/test-molecule.sh {posargs}
+
 [testenv:alint]
 commands = ansible-lint ansible/*.yaml