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Diffstat (limited to 'doc/rtd/topics')
| -rw-r--r-- | doc/rtd/topics/integration_tests.rst | 30 |
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diff --git a/doc/rtd/topics/integration_tests.rst b/doc/rtd/topics/integration_tests.rst index aeda326c..3cfca31e 100644 --- a/doc/rtd/topics/integration_tests.rst +++ b/doc/rtd/topics/integration_tests.rst @@ -14,6 +14,36 @@ laid out in :ref:`unit_testing` should be followed for integration tests. Setup is accomplished via a set of fixtures located in ``tests/integration_tests/conftest.py``. +Image Selection +=============== + +Each integration testing run uses a single image as its basis. This +image is configured using the ``OS_IMAGE`` variable; see +:ref:`Configuration` for details of how configuration works. + +``OS_IMAGE`` can take two types of value: an Ubuntu series name (e.g. +"focal"), or an image specification. If an Ubuntu series name is +given, then the most recent image for that series on the target cloud +will be used. For other use cases, an image specification is used. + +In its simplest form, an image specification can simply be a cloud's +image ID (e.g. "ami-deadbeef", "ubuntu:focal"). In this case, the +image so-identified will be used as the basis for this testing run. + +This has a drawback, however: as we do not know what OS or release is +within the image, the integration testing framework will run *all* +tests against the image in question. If it's a RHEL8 image, then we +would expect Ubuntu-specific tests to fail (and vice versa). + +To address this, a full image specification can be given. This is of +the form: ``<image_id>[::<os>[::<release]]`` where ``image_id`` is a +cloud's image ID, ``os`` is the OS name, and ``release`` is the OS +release name. So, for example, Ubuntu 18.04 (Bionic Beaver) on LXD is +``ubuntu:bionic::ubuntu::bionic`` or RHEL 8 on Amazon is +``ami-justanexample::rhel::8``. When a full specification is given, +only tests which are intended for use on that OS and release will be +executed. + Image Setup =========== |