issue #409: add new stub_connections/ test type.

tests/ansible/integration/all.yml

@@ -7,6 +7,7 @@
 - import_playbook: async/all.yml
 - import_playbook: become/all.yml
 - import_playbook: connection/all.yml
+- import_playbook: stub_connections/all.yml
 - import_playbook: connection_loader/all.yml
 - import_playbook: context_service/all.yml
 - import_playbook: delegation/all.yml

tests/ansible/integration/stub_connections/README.md

@@ -0,0 +1,9 @@
+
+# `stub_connections/`
+
+The playbooks in this directory use stub implementations of various third party
+tools (kubectl etc.) to verify arguments passed by Ansible to Mitogen and
+subsequently onward to the tool result in something that looks sane.
+
+These are bare minimum tests just to ensure sporadically tested connection
+methods haven't broken in embarrasingly obvious ways.

tests/ansible/integration/stub_connections/all.yml

@@ -0,0 +1,2 @@
+- import_playbook: kubectl.yml
+- import_playbook: setns_lxc.yml

tests/ansible/integration/stub_connections/kubectl.yml

@@ -0,0 +1,15 @@
+
+- name: integration/stub_connections/kubectl.yml
+  hosts: test-targets
+  gather_facts: false
+  any_errors_fatal: true
+  tasks:
+  - custom_python_detect_environment:
+    vars:
+      ansible_connection: kubectl
+      mitogen_kubectl_path: stub-kubectl.py
+    register: out
+
+  - assert:
+      that:
+      - out.env.THIS_IS_STUB_KUBECTL == '1'

tests/ansible/integration/stub_connections/setns_lxc.yml

@@ -0,0 +1,30 @@
+
+# issue #409.
+# setns is hard -- it wants to do superuser syscalls, so we must run it in a
+# child Ansible via sudo. But that only works if sudo works.
+
+- name: integration/stub_connections/setns_lxc.yml
+  hosts: test-targets
+  gather_facts: false
+  any_errors_fatal: true
+  connection: local
+  tasks:
+    - setup:
+      register: out
+
+    - command: |
+        sudo -E ansible
+        -i localhost,
+        -c setns
+        -e mitogen_kind=lxc
+        -e mitogen_lxc_info_path=stub-lxc-info.py
+        -m shell
+        -a "echo hi"
+        localhost
+      args:
+        chdir: ../..
+        warn: false
+
+      # TODO: we don't know if sudo works on this machine, so hard wire it for
+      # me and for Travis CI.
+      when: out.ansible_facts.ansible_user_id in ['dmw', 'travis']

tests/data/stubs/stub-lxc-info.py

@@ -0,0 +1,4 @@
+#!/usr/bin/env python
+# Mainly for use in stubconnections/kubectl.yml
+
+print 'PID: 1'