test fix

sphinx_automodapi/automodsumm.py

@@ -261,7 +261,7 @@ def patched_generate_dot(self, name, urls={}, env=None,
  # Make a new mapping dictionary that uses class full names by importing each
  # class documented name
  fullname_urls = {self.class_name(try_import(name), 0, None): url
- for name, url in urls.items()}
+ for name, url in urls.items() if try_import(name) is not None}
  return old_generate_dot(self, name, urls=fullname_urls, env=env,
  graph_attrs=graph_attrs, node_attrs=node_attrs,
  edge_attrs=edge_attrs)