History

Sean Mooney 4eeb18ef7d improve test logging and replace psycopg2 with psycopg2-binary

This change replaces psycopg2 with psycopg2-binary removing
the need to have postgresql header files to compile the module
when running tests locally. nova did this years ago, so this
is just making placement use the binary wheel as well.

Additionally, this fixes how server-side logs are reported in
tox. Effectively we now use the OS_LOG_CAPTURE env var
to control if logs are printed. By default all logs to
stdout and stderr are captured and not printed to keep existing
behavior. You can now define OS_DEBUG=1 and OS_LOG_CAPTURE=0 to
change the  default log level to debug (from info) and allow
the logs to be printed when tests fail.

Change-Id: I576bdc102f10c6e50a5420590ac64f50dee124c0

2025-04-02 12:07:01 +00:00

functional

improve test logging and replace psycopg2 with psycopg2-binary

2025-04-02 12:07:01 +00:00

unit

Adapt cmd unit test depending on python version

2025-01-20 14:46:13 +01:00

__init__.py

Rename the 'nova' directories to 'placement'

2018-09-04 10:31:22 -05:00

fixtures.py

Stop to use the __future__ module.

2020-06-03 10:38:03 +02:00

README.rst

Link to tempest doc in tests/README.rst

2018-09-14 09:32:27 -06:00

README.rst

OpenStack Placement Testing Infrastructure

This README file attempts to provides some brief guidance for writing tests when fixing bugs or adding features to placement.

For a lot more information see the contributor docs.

Test Types: Unit vs. Functional vs. Integration

Placement tests are divided into three types:

Unit: tests which confirm the behavior of individual pieces of the code (individual methods or classes) with minimal dependency on other code or on externals like the database.
Functional: tests which confirm a chunk of behavior, end to end, such as an HTTP endpoint accepting a body from a request and returning the expected response but without reliance on code or services that are external to placement.
Integration: tests that confirm that things work with other services, such as nova.

Placement uses all three, but the majority are functional tests. This is the result of the fairly direct architecture of placement: It is a WSGI application that talks to a database.

Writing Unit Tests

Placement unit tests are based on the TestCase that comes with the testtools package. Use mocks only as necessary. If you find that you need multiple mocks to make a test for the code you are testing may benefit from being refactored to smaller units.

Writing Functional Tests

There are two primary classes of functional test in placement:

Testing database operations. These are based on placement.tests.functional.base.TestCase which is responsible for starting an in-memory database and a reasonable minimal configuration.
Testing the HTTP API using gabbi.

Writing Integration Tests

Placement configures its gate and check jobs via the .zuul.yaml file in the root of the code repository. Some of the entries in that file configure integration jobs, many of which use tempest.