gecko/testing/web-platform/tests

The Web Platform Tests Project

These are test suites for 60+ Web-platform specifications, along with test-infrastructure code for running the tests.

Running the Tests

The tests are designed to be run from your local computer. The test environment requires Python 2.7+ (but not Python 3.x). You will also need a copy of OpenSSL. For users on Windows this is available from the openssl website.

To get the tests running, you need to set up the test domains in your hosts file. The following entries are required:

127.0.0.1	web-platform.test
127.0.0.1	www.web-platform.test
127.0.0.1	www1.web-platform.test
127.0.0.1	www2.web-platform.test
127.0.0.1	xn--n8j6ds53lwwkrqhv28a.web-platform.test
127.0.0.1	xn--lve-6lad.web-platform.test

Because web-platform-tests uses git submodules, you must ensure that these are up to date. In the root of your checkout, run:

git submodule update --init --recursive

The test environment can then be started using

python serve.py

This will start HTTP servers on two ports and a websockets server on one port. By default one web server starts on port 8000 and the other ports are randomly-chosen free ports. Tests must be loaded from the first HTTP server in the output. To change the ports, edit the config.json file, for example, replacing the part that reads:

"http": [8000, "auto"]

to some port of your choice e.g.

"http":[1234, "auto"]

If you installed OpenSSL in such a way that running openssl at a command line doesn't work, you also need to adjust the path to the OpenSSL binary. This can be done by adding a section to config.json like:

"ssl": {"openssl": {"binary": "/path/to/openssl"}}

Test Runner

There is a test runner that is designed to provide a convenient way to run the web-platform tests in-browser. It will run testharness.js tests automatically but requires manual work for reftests and manual tests.

In order to use the runner, it is first necessary to generate a test manifest. This must be called MANIFEST.json and placed in the web-platform-tests root.

You must do this step to use the test runner, even if you are not creating a new test suite.

To generate this file, from a command prompt at the root directory of the repo, run:

python tools/scripts/manifest.py

This tools/scripts/manifest.py needs python html5lib package. If you have not installed it yet, run:

pip install html5lib

On Mac OS X, python is installed with Xcode, but pip is not. Try

sudo easy_install pip

if pip is not already on your system.

Running the tests requires that the test environment be activated as described above. The runner can be found at /tools/runner/index.html on the local server i.e.

http://web-platform.test:8000/tools/runner/index.html

in the default configuration.

Publication

The master branch is automatically synced to http://w3c-test.org/.

Pull requests that have been checked are automatically mirrored to http://w3c-test.org/submissions/.

Finding Things

Each top-level directory represents a W3C specification: the name matches the shortname used after the canonical address of the said specification under http://www.w3.org/TR/ .

For some of the specifications, the tree under the top-level directory represents the sections of the respective documents, using the section IDs for directory names, with a maximum of three levels deep.

So if you're looking for tests in HTML for "The History interface", they will be under html/browsers/history/the-history-interface/.

Various resources that tests depend on are in common, images, and fonts.

If you're looking at a section of the specification and can't figure out where the directory is for it in the tree, just run:

node tools/scripts/id2path.js your-id

Branches

In the vast majority of cases the only branch that you should need to care about is master.

There is another branch called CR. This is a strict subset of master that is limited to features that are found in the Candidate Recommendation version of the relevant specifications.

If you see other branches in the repository, you can generally safely ignore them. Please note that branches prefixed with temp/ are temporary branches and can get deleted at some point. So don't base any work off them unless you want to see your work destroyed.

Contributing

Save the Web, Write Some Tests!

Absolutely everyone is welcome (and even encouraged) to contribute to test development, so long as you fulfill the contribution requirements detailed in the Contributing Guidelines. No test is too small or too simple, especially if it corresponds to something for which you've noted an interoperability bug in a browser.

The way to contribute is just as usual:

• fork this repository (and make sure you're still relatively in sync with it if you forked a while ago);
• create a branch for your changes: git checkout -b your-name/topic;
• make your changes;
• push that to your repo;
• and send in a pull request based on the above.

Please make your pull requests either to master or to a feature branch (but not to CR).

We can sometimes take a little while to go through pull requests because we have to go through all the tests and ensure that they match the specification correctly. But we look at all of them, and take everything that we can.

If you wish to contribute actively, you're very welcome to join the public-test-infra@w3.org mailing list (low traffic) by signing up to our mailing list. The mailing list is archived.

Join us on irc #testing (irc.w3.org, port 6665). The channel is archived.

Adding command-line scripts ("tools" subdirs)

Sometimes you may want to add a script to the repository that's meant to be used from the command line, not from a browser (e.g., a script for generating test files). If you want to ensure (e.g., or security reasons) that such scripts won't be handled by the HTTP server, but will instead only be usable from the command line, then place them in either:

• the tools subdir at the root of the repository, or
• the tools subdir at the root of any top-level directory in the repository which contains the tests the script is meant to be used with

Any files in those tools directories won't be handled by the HTTP server; instead the server will return a 404 if a user navigates to the URL for a file within them.

If you want to add a script for use with a particular set of tests but there isn't yet any tools subdir at the root of a top-level directory in the repository containing those tests, you can create a tools subdir at the root of that top-level directory and place your scripts there.

For example, if you wanted to add a script for use with tests in the notifications directory, create the notifications/tools subdir and put your script there.

Documentation

• How to write and review tests
• Documentation for the wptserve server