tests: add exact test for issue 251; closes #251.

tests/ansible/integration/connection_delegation/all.yml

@@ -1,4 +1,5 @@
 - import_playbook: delegate_to_template.yml
+- import_playbook: local_action.yml
 - import_playbook: osa_container_standalone.yml
 - import_playbook: osa_delegate_to_self.yml
 - import_playbook: stack_construction.yml

tests/ansible/integration/connection_delegation/local_action.yml

@@ -0,0 +1,34 @@
+
+# issue #251: local_action with mitogen_via= builds wrong stack.
+
+- hosts: cd-newuser-normal-normal
+  tasks:
+    - meta: end_play
+      when: not is_mitogen
+
+    - local_action: mitogen_get_stack
+      become: true
+      register: out
+
+    - assert_equal:
+        left: out.result
+        right: [
+          {
+            'kwargs': {
+              'python_path': null
+            },
+            'method': 'local',
+          },
+          {
+            'enable_lru': true,
+            'kwargs': {
+              'connect_timeout': 10,
+              'python_path': null,
+              'password': null,
+              'username': 'root',
+              'sudo_path': null,
+              'sudo_args': ['-H', '-S', '-n'],
+            },
+            'method': 'sudo',
+          }
+        ]