openstack
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tempest
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tempest/tempest/api
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Rajesh Tailor a85bdb47ef [codespell] fix typos 
This change fixes typos in tempest code, doc, zuul yaml
and tox.ini file, which are found by codespell.

Change-Id: I8051d979e28f7dbf532181f339cbef9cd7220c76
 		2024-04-02 12:12:32 +05:30
..
compute [codespell] fix typos 2024-04-02 12:12:32 +05:30
identity Clean up [identity-feature-enable] options for old releases 2024-01-23 03:39:36 +00:00
image Merge "Add prefix to images created in *ImagesNegativeTest tests" 2024-03-06 03:46:00 +00:00
network [codespell] fix typos 2024-04-02 12:12:32 +05:30
object_storage [codespell] fix typos 2024-04-02 12:12:32 +05:30
volume Test create a backup when latest incremental backup is deleted 2024-03-10 06:46:44 +00:00
README.rst General doc updates 2024-01-31 09:00:16 +01:00
__init__.py Remove copyright from empty files 2014-01-14 03:02:04 +04:00

README.rst

Tempest Field Guide to API tests

What are these tests?

One of Tempest's prime functions is to ensure that your OpenStack cloud works with the OpenStack API as documented. The current largest portion of Tempest code is devoted to test cases that do exactly this.

It's also important to test not only the expected positive path on APIs, but also to provide them with invalid data to ensure they fail in expected and documented ways. The latter type of tests is called negative tests in Tempest source code. Throughout the OpenStack project, Tempest has discovered many fundamental bugs by doing just this.

In order for some APIs to return meaningful results, there must be enough data in the system. This means these tests might start by spinning up a server, image, etc., and then operating on it.

Why are these tests in Tempest?

This is one of the core missions for the Tempest project, and where it started. Many people use this bit of function in Tempest to ensure their clouds haven't broken the OpenStack API.

It could be argued that some of the negative testing could be done back in the projects themselves, and we might evolve there over time, but currently, in the OpenStack gate, this is a fundamentally important place to keep things.

Scope of these tests

API tests should always use the Tempest implementation of the OpenStack API, as we want to ensure that bugs aren't hidden by the official clients.

They should test specific API calls and can build up complex states if it's needed for the API call to be meaningful.

They should send not only good data, but bad data at the API and look for error codes.

They should all be able to be run on their own, not depending on the state created by a previous test.