Horizon’s tests and you

How to run the tests

Because Horizon is composed of both the horizon app and the openstack_dashboard reference project, there are in fact two sets of unit tests. While they can be run individually without problem, there is an easier way:

Included at the root of the repository is the run_tests.sh script which invokes both sets of tests, and optionally generates analyses on both components in the process. This script is what Jenkins uses to verify the stability of the project, so you should make sure you run it and it passes before you submit any pull requests/patches.

To run the tests:

$ ./run_tests.sh

It’s also possible to run a subset of unit tests.

See also

The run_tests.sh Script
Full reference for the run_tests.sh script.

By default running the Selenium tests will open your Firefox browser (you have to install it first, else an error is raised), and you will be able to see the tests actions. If you want to run the suite headless, without being able to see them (as they are ran on Jenkins), you can run the tests:

$ ./run_tests.sh –with-selenium –selenium-headless

Selenium will use a virtual display in this case, instead of your own. In order to run the tests this way you have to install the dependency xvfb, like this:

$ sudo apt-get install xvfb

for a Debian OS flavour, or for Fedora/Red Hat flavours:

$ sudo yum install xorg-x11-server-Xvfb

If you can’t run a virtual display, or would prefer not to, you can use the PhantomJS web driver instead:

$ ./run_tests.sh –with-selenium –selenium-phantomjs

If you need to install PhantomJS, you may do so with npm like this:

$ npm -g install phantomjs

Writing tests

Horizon uses Django’s unit test machinery (which extends Python’s unittest2 library) as the core of its test suite. As such, all tests for the Python code should be written as unit tests. No doctests please.

In general new code without unit tests will not be accepted, and every bugfix must include a regression test.

For a much more in-depth discussion of testing, see the testing topic guide.

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