Add coverage testing

.gitignore

@@ -45,6 +45,7 @@ pip-log.txt
 pip-delete-this-directory.txt
 
 # Unit test / coverage reports
+cover/
 htmlcov/
 .tox/
 .coverage

test-requirements.txt

@@ -3,6 +3,7 @@
 # process, which may cause wedges in the gate later.
 
 ansible-lint>=3.0.0 # MIT
+coverage>=4.5.1 # Apache-2.0
 flake8>=3.5.0 # MIT
 # Required for Python 2
 mock>=2.0.0 # BSD

tox.ini

@@ -29,6 +29,19 @@ basepython = python2.7
 commands =
   flake8 {posargs}
 
+[testenv:cover]
+basepython = python3
+setenv =
+    VIRTUAL_ENV={envdir}
+    PYTHON=coverage run --source tenks,ansible/action_plugins --parallel-mode
+commands =
+    coverage erase
+    stestr run {posargs}
+    coverage combine
+    coverage report
+    coverage html -d cover
+    coverage xml -o cover/coverage.xml
+
 [testenv:alint]
 basepython = python2.7
 # ansible-lint doesn't support custom modules, so add ours to the Ansible path.