Ceilometer includes an extensive set of automated unit tests which are run through tox.
$ sudo pip install tox
On Ubuntu install mongodb and libmysqlclient-dev packages:
$ sudo apt-get install mongodb $ sudo apt-get install libmysqlclient-dev
For Fedora20 there is no libmysqlclient-dev package, so you’ll need to install mariadb-devel.x86-64 (or mariadb-devel.i386) instead:
$ sudo yum install mongodb $ sudo yum install mariadb-devel.x86_64
Install the test dependencies:
$ sudo pip install -r /opt/stack/ceilometer/test-requirements.txt
Run the unit and code-style tests:
$ cd /opt/stack/ceilometer $ tox -e py27,pep8
As tox is a wrapper around testr, it also accepts the same flags as testr. See the testr documentation for details about these additional flags.
Use a double hyphen to pass options to testr. For example, to run only tests under tests/api/v2:$ tox -e py27 -- api.v2
To debug tests (ie. break into pdb debugger), you can use ‘’debug’’ tox environment. Here’s an example, passing the name of a test since you’ll normally only want to run the test that hits your breakpoint:$ tox -e debug ceilometer.tests.test_bin
For reference, the debug tox environment implements the instructions here: https://wiki.openstack.org/wiki/Testr#Debugging_.28pdb.29_Tests
There is a growing suite of tests which use a tool called gabbi to test and validate the behavior of the Ceilometer API. These tests are run when using the usual py27 tox target but if desired they can be run by themselves:
$ tox -e gabbi
The YAML files used to drive the gabbi tests can be found in ceilometer/tests/gabbi/gabbits. If you are adding to or adjusting the API you should consider adding tests here.