Add a test suite for autodoc.

tests/root/conf.py

@@ -23,7 +23,7 @@ sys.path.append(os.path.abspath('.'))
 
 # Add any Sphinx extension module names here, as strings. They can be extensions
 # coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
-extensions = ['ext']
+extensions = ['ext', 'sphinx.ext.autodoc']
 
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['_templates']