Trivial: Add running tests section to HACKING.rst

The HACKING.rst testing section is added to point out
that we use stestr now instead of testr.

Change-Id: Ic2ef2a70134dacb79dedbbc75f581029e91d0eb6
Nguyen Hai 5 years ago
parent a7ba6d02aa
commit 89f5bfd7b3

@ -17,3 +17,22 @@ For every new feature, unit tests should be created that both test and
bug that had no unit test, a new passing unit test should be added. If a
submitted bug fix does have a unit test, be sure to add a new one that fails
without the patch and passes with the patch.
Running Tests
The testing system is based on a combination of tox and stestr. The canonical
approach to running tests is to simply run the command ``tox``. This will
create virtual environments, populate them with dependencies and run all of
the tests that OpenStack CI systems run. Behind the scenes, tox is running
``stestr run``, but is set up such that you can supply any additional
stestr arguments that are needed to tox. For example, you can run:
``tox -- --analyze-isolation`` to cause tox to tell stestr to add
--analyze-isolation to its argument list.
It is also possible to run the tests inside of a virtual environment
you have created, or it is possible that you have all of the dependencies
installed locally already. In this case, you can interact with the stestr
command directly. Running ``stestr run`` will run the entire test suite.
``stestr run --concurrency=1`` will run tests serially (by default, stestr runs
tests in parallel). More information about stestr can be found at: