ansible-docs/docs/docsite/rst/dev_guide/testing_integration.rst

:orphan:

.. _testing_integration:

*****************
Integration tests
*****************

.. contents:: Topics

The Ansible integration Test system.

Tests for playbooks, by playbooks.

Some tests may require credentials.  Credentials may be specified with `credentials.yml`.

Some tests may require root.

.. note::
  Every new module and plugin should have integration tests, even if the tests cannot be run on Ansible CI infrastructure.
  In this case, the tests should be marked with the ``unsupported`` alias in `aliases file <https://docs.ansible.com/ansible/latest/dev_guide/testing/sanity/integration-aliases.html>`_.

Quick Start
===========

It is highly recommended that you install and activate the ``argcomplete`` Python package.
It provides tab completion in ``bash`` for the ``ansible-test`` test runner.

Configuration
=============

ansible-test command
--------------------

The example below assumes ``bin/`` is in your ``$PATH``. An easy way to achieve that
is to initialize your environment with the ``env-setup`` command:

.. code-block:: shell-session

    source hacking/env-setup
    ansible-test --help

You can also call ``ansible-test`` with the full path:

.. code-block:: shell-session

    bin/ansible-test --help

integration_config.yml
----------------------

Making your own version of ``integration_config.yml`` can allow for setting some
tunable parameters to help run the tests better in your environment.  Some
tests (for example, cloud tests) will only run when access credentials are provided.  For more
information about supported credentials, refer to the various ``cloud-config-*.template``
files in the ``tests/integration/`` directory.

Prerequisites
=============

Some tests assume things like ``hg``, ``svn``, and ``git`` are installed, and in path.  Some tests
(such as those for Amazon Web Services) need separate definitions, which will be covered
later in this document.

(Complete list pending)

Non-destructive Tests
=====================

These tests will modify files in subdirectories, but will not do things that install or remove packages or things
outside of those test subdirectories.  They will also not reconfigure or bounce system services.

.. note:: Running integration tests within containers

   To protect your system from any potential changes caused by integration tests, and to ensure a sensible set of dependencies are available we recommend that you always run integration tests with the ``--docker`` option, for example ``--docker ubuntu2204``. Get the list of supported container images by running ``ansible-test integration --help``. You can find them in the *target docker images* section of the output. The ``default`` image is used for sanity and unit tests, as well as for platform independent integration tests such as those for cloud modules.

Run as follows for all POSIX platform tests executed by our CI system in a Fedora 34 container:

.. code-block:: shell-session

    ansible-test integration shippable/ --docker fedora34

You can exclude a specific test as well, such as for individual modules:

.. code-block:: shell-session

    ansible-test integration --exclude git

You can target a specific test as well, such as for individual modules:

.. code-block:: shell-session

    ansible-test integration ping

You can use the ``-v`` option to make the output more verbose:

.. code-block:: shell-session

    ansible-test integration lineinfile -vvv

Use the following command to list all the available targets:

.. code-block:: shell-session

    ansible-test integration --list-targets

.. note:: Bash users

   If you use ``bash`` with ``argcomplete``, obtain a full list by doing: ``ansible-test integration <tab><tab>``

Destructive Tests
=================

These tests are allowed to install and remove some trivial packages.  You will likely want to devote these
to a virtual environment, such as Docker.  They won't reformat your filesystem:

.. code-block:: shell-session

    ansible-test integration destructive/ --docker fedora34

Windows Tests
=============

These tests exercise the ``winrm`` connection plugin and Windows modules.  You'll
need to define an inventory with a remote Windows Server to use for testing,
and enable PowerShell Remoting to continue.

Running these tests may result in changes to your Windows host, so don't run
them against a production/critical Windows environment.

Enable PowerShell Remoting (run on the Windows host by a Remote Desktop):

.. code-block:: shell-session

    Enable-PSRemoting -Force

Define Windows inventory:

.. code-block:: shell-session

    cp inventory.winrm.template inventory.winrm
    ${EDITOR:-vi} inventory.winrm

Run the Windows tests executed by our CI system:

.. code-block:: shell-session

    ansible-test windows-integration -v shippable/

Tests in containers
===================

If you have a Linux system with Docker or Podman installed, running integration tests using the same containers used by
the Ansible continuous integration (CI) system is recommended.

.. note:: Podman

   By default, Podman will only be used if the Docker CLI is not installed. If you have Docker installed but want to use
   Podman, you can change this behavior by setting the environment variable ``ANSIBLE_TEST_PREFER_PODMAN``.

.. note:: Docker on non-Linux

   Using Docker Engine to run Docker on a non-Linux host (such as macOS) is not recommended.
   Some tests may fail, depending on the image used for testing.
   Using the ``--docker-privileged`` option when running ``integration`` (not ``network-integration`` or ``windows-integration``) may resolve the issue.

Running Integration Tests
-------------------------

To run all CI integration test targets for POSIX platforms in a Ubuntu 18.04 container:

.. code-block:: shell-session

    ansible-test integration shippable/ --docker ubuntu1804

You can also run specific tests or select a different Linux distribution.
For example, to run tests for the ``ping`` module on a Ubuntu 18.04 container:

.. code-block:: shell-session

    ansible-test integration ping --docker ubuntu1804

.. _test_container_images:

Container Images
----------------

Container images are updated regularly. To see the current list of container images:

.. code-block:: bash

  ansible-test integration --help

The list is under the **target docker images and supported python version** heading.

Other configuration for Cloud Tests
===================================

To run some tests, you must provide access credentials in a file named
``cloud-config-aws.yml`` or ``cloud-config-cs.ini`` in the tests/integration
directory. Corresponding ``.template`` files are available for syntax help. The newer AWS
tests now use the file ``tests/integration/cloud-config-aws.yml``.

IAM policies for AWS
====================

Ansible needs fairly wide ranging powers to run the tests in an AWS account. These rights can be provided to a dedicated user. These need to be configured before running the test.

testing-policies
----------------

The GitHub repository `mattclay/aws-terminator <https://github.com/mattclay/aws-terminator/>`_
contains two sets of policies used for all existing AWS module integration tests.
The `hacking/aws_config/setup_iam.yml` playbook can be used to setup two groups:

  - `ansible-integration-ci` will have the policies applied necessary to run any
    integration tests not marked as `unsupported` and are designed to mirror those
    used by Ansible's CI.
  - `ansible-integration-unsupported` will have the additional policies applied
    necessary to run the integration tests marked as `unsupported` including tests
    for managing IAM roles, users and groups.

Once the groups have been created, you'll need to create a user and make the user a member of these
groups. The policies are designed to minimize the rights of that user.  Please note that while this policy does limit
the user to one region, this does not fully restrict the user (primarily due to the limitations of the Amazon ARN
notation). The user will still have wide privileges for viewing account definitions, and will also be able to manage
some resources that are not related to testing (for example, AWS lambdas with different names).  Tests should not
be run in a primary production account in any case.

Other Definitions required
--------------------------

Apart from installing the policy and giving it to the user identity running the tests, a
lambda role `ansible_integration_tests` has to be created which has lambda basic execution
privileges.


Network Tests
=============

For guidance on writing network test see :ref:`testing_resource_modules`.


Where to find out more
======================

If you'd like to know more about the plans for improving testing Ansible, join the 
`Ansible community forum <https://forum.ansible.com/>`_