Test Suites for Web Platform specifications—including WHATWG, W3C and others
HTML JavaScript GLSL Python CSS Haxe
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2dcontext Add tests for Canvas2D imageSmoothingEnabled (#2416) Aug 17, 2016
FileAPI Update FileAPI WPT idlharness Aug 18, 2016
IndexedDB Support the 'close' Event on Databases. Aug 1, 2016
WebCryptoAPI Merge pull request #3183 from engelke/sign_verify Aug 24, 2016
WebIDL Lazily define interface objects on globals (fixes #6419) Feb 26, 2016
XMLHttpRequest Fix lint errors from test upstreaming Aug 1, 2016
ambient-light Add IDL harness tests for generic sensor and ambient light APIs. Remo… Apr 17, 2016
annotation-model Annotation model first real tests (#3509) Aug 23, 2016
app-uri Use correct paths to testharness.js and testharnessreport.js. (#3539) Aug 24, 2016
battery-status Battery: Fix racy issue in battery-promise-iframe.html (#3191) Jun 20, 2016
common Add a content-type to form-submission script response, Jun 29, 2016
compat text-decoration-color: currentcolor should not use value from -webkit… May 9, 2016
conformance-checkers cc Create HTML integration point tests (#2144) Aug 24, 2016
content-security-policy Use correct paths to testharness.js and testharnessreport.js. (#3539) Aug 24, 2016
cookies Basic tests for ignoring 'secure' cookies Feb 23, 2016
cors Parse 'code' GET parameter as integer in cors-makeheader.py. Aug 1, 2016
cssom-view Tests for scroll_area on body element in quirks mode. Jun 24, 2016
custom-elements Rename "CustomElementsRegistry" to "CustomElementRegistry" (#3538) Aug 25, 2016
docs Introduce multi-global support. (#3350) Jul 27, 2016
dom Update web-platform-tests now that Attr inherits Node again Aug 20, 2016
domparsing Update entities test from prior PR (3081) feedback (#3117) Aug 15, 2016
domxpath Add OWNERS files generated from commit log. Feb 2, 2016
editing Change default paragraph separator from <p> to <div> (#3536); rs=Ms2ger Aug 24, 2016
encoding Don't pass argument to TextEncoder constructor (#3129) Jun 17, 2016
encrypted-media [eme] Add tests for clearkey persistent-license sessions (#3424) Aug 22, 2016
eventsource Provide a mode whenever calling open() in Python. (#3311); r=Ms2ger Jul 22, 2016
ext-xhtml-pubid/the-xhtml-syntax/parsing-xhtml-documents Convert files with only CRLF line endings to pure LF Jan 28, 2014
fetch Headers API constructor and methods Aug 18, 2016
fonts move hierarchy to the root Dec 20, 2012
gamepad Add OWNERS files generated from commit log. Feb 2, 2016
generic-sensor Add IDL harness tests for generic sensor and ambient light APIs. Remo… Apr 17, 2016
geolocation-API Add OWNERS files generated from commit log. Feb 2, 2016
hr-time Added more reviewers for webperf with authorization from the individu… Jun 21, 2016
html-imports Remove more testharness.css links (#2217) Mar 31, 2016
html-longdesc Add OWNERS files generated from commit log. Feb 2, 2016
html-media-capture Remove self from all OWNERS files (#2907) Apr 26, 2016
html Drop DOMElementMap from html/dom/interfaces.html (#3531) Aug 23, 2016
http Add a test for respecting the HTTP content length header. Jul 2, 2014
images Add OWNERS files generated from commit log. Feb 2, 2016
infrastructure Move failing-test.html out of common. Feb 3, 2015
innerText Avoid duplicate test names in innerText/getter.html (#3520); r=Ms2ger Aug 22, 2016
input-events added new folder for input-events (#3537) Aug 25, 2016
js Add a test for incumbent global handling when invoking promise callba… Apr 8, 2016
media-source Merge pull request #3224 from tidoust/media-source-addSourceBuffer-mode Aug 19, 2016
media Remove self from all OWNERS files (#2907) Apr 26, 2016
mediacapture-streams Don't use "Infinity" in a constraint Aug 19, 2016
microdata Microdata DOM API was removed in whatwg/html@2aaecb8 Oct 8, 2015
mixed-content Provide a mode whenever calling open() in Python. (#3311); r=Ms2ger Jul 22, 2016
navigation-timing Added more reviewers for webperf with authorization from the individu… Jun 21, 2016
notifications Add OWNERS files generated from commit log. Feb 2, 2016
old-tests webdriver: move existing tests to /old-tests Mar 31, 2016
orientation-event Import test cases from DVCS for Device Orientation Event (#350) Jun 13, 2016
page-visibility Added more reviewers for webperf with authorization from the individu… Jun 21, 2016
payment-request Add copyright since test originated from Chromium Aug 19, 2016
performance-timeline Added more reviewers for webperf with authorization from the individu… Jun 21, 2016
pointerevents pointerevents: add geometry attributes test (#3450) Aug 25, 2016
pointerlock PointerLock: Fixed links to testharness.js Aug 22, 2016
presentation-api Presentation API Testing - Use Cases: default Request (#3354) Aug 5, 2016
progress-events Remove invalid-as-of-ES6 test of ProgressEvent.length (#3068) May 25, 2016
proximity Add OWNERS files generated from commit log. Feb 2, 2016
quirks-mode Test lack of support for list item bullet size quirk (#3192) Jun 20, 2016
referrer-policy Add strict-origin* referrer policy test (#3437) Aug 12, 2016
resource-timing Added more reviewers for webperf with authorization from the individu… Jun 21, 2016
resources @ 8550cfe Sync with upstream: import trivial whitespace fix. (#3287) Jul 12, 2016
screen-orientation Add OWNERS files generated from commit log. Feb 2, 2016
secure-contexts Add Web Platform Tests for Secure Contexts. May 9, 2016
selection Request long timeout for selection/collapse.html. Apr 8, 2016
selectors-api/tests/submissions/Opera Fix other tests that use the ParentNode-querySelector-All.js script. Jul 20, 2015
selectors/attribute-selectors/attribute-case Remove test about setting cssText since it's no-op Feb 8, 2016
service-workers P5 Import actiation.https.html wpt test from blink. Aug 1, 2016
shadow-dom Use correct paths to testharness.js and testharnessreport.js. (#3539) Aug 24, 2016
streams Update readable stream error expectations Jul 7, 2016
subresource-integrity Fix testharness.js path in subresources-integrity tests, Jun 9, 2016
svg Update type of Document.rootElement Aug 12, 2016
tools @ de4d6eb Update tools. Aug 17, 2016
touch-events Use correct paths to testharness.js and testharnessreport.js. (#3539) Aug 24, 2016
typedarrays Add OWNERS files generated from commit log. Feb 2, 2016
uievents Rewrite customevent.html as a testharness.js test. (#3096) May 30, 2016
url Add URL test for “tel:1234567890” Aug 21, 2016
user-timing Added more reviewers for webperf with authorization from the individu… Jun 21, 2016
vibration Remove more testharness.css links (#2217) Mar 31, 2016
wai-aria Initial add of wai-aria folder. (#3474) Aug 19, 2016
web-animations Remove more testharness.css links (#3466) Aug 16, 2016
webaudio Use correct paths to testharness.js and testharnessreport.js. (#3539) Aug 24, 2016
webauthn Create OWNERS May 13, 2016
webdriver Remove `scope='function'` parameter from fixture (#3432) Aug 5, 2016
webgl Provide a mode whenever calling open() in Python. (#3311); r=Ms2ger Jul 22, 2016
webmessaging Add a test to check for prefixed initMessageEvent support. Mar 4, 2016
webrtc Remove more testharness.css links (#2217) Mar 31, 2016
websockets Merge pull request #2716 from w3c/websocket-close-code Jun 21, 2016
webstorage fix: make the test actually test reasonable things. Apr 8, 2016
webvtt part5 : the value of position and line are double. Aug 1, 2016
workers Remove reference to removed file. Jul 29, 2016
.gitignore Update .gitignore to exclude .vscode/ directory Jun 8, 2016
.gitmodules Ignore dirty tools submodule in git status Nov 16, 2015
.travis.yml [infra] Cause Travis to start builds much faster. Jul 14, 2015
CONTRIBUTING.md Further modifications to the CLA text. Aug 8, 2013
LICENSE actual license May 29, 2013
README.md Add nonexistent-origin.web-platform.test to hosts (#2673) Apr 27, 2016
config.default.json Add doc_root and ws_doc_root defaulting to null in config.default.json. Jun 3, 2015
lint More helpful error message for failed ImportError Aug 9, 2015
lint.whitelist Annotation model first real tests (#3509) Aug 23, 2016
manifest Make sure we supply the correct test root when generating the manifest. Mar 30, 2015
serve Pass routes in to servers rather than relying on global state. Mar 11, 2015
serve.py Serve: Remove misleading shebang. Jun 24, 2015
server-side.md Make tests self-hosting Jan 6, 2014
testharness_runner.html Add testharness_runner file here for now. Apr 17, 2015

README.md

The Web Platform Tests Project IRC chat

The Web Platform Tests Project is a W3C-coordinated attempt to build a cross-browser testsuite for the Web-platform stack. However, for mainly historic reasons, the CSS WG testsuite is in a separate repository, csswg-test. Writing tests in a way that allows them to be run in all browsers gives browser projects confidence that they are shipping software that is compatible with other implementations, and that later implementations will be compatible with their implementations. This in turn gives Web authors/developers confidence that they can actually rely on the Web platform to deliver on the promise of working across browsers and devices without needing extra layers of abstraction to paper over the gaps left by specification editors and implementors.

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. Users on Windows should read the Windows Notes section below.

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
0.0.0.0     nonexistent-origin.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

./serve

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"}}

Windows Notes

Running wptserve with SSL enabled on Windows typically requires installing an OpenSSL distribution. Shining Light provide a convenient installer that is known to work, but requires a little extra setup.

After installation ensure that the path to OpenSSL is on your %Path% environment variable.

Then set the path to the default OpenSSL configuration file (usually something like C:\OpenSSL-Win32\bin\openssl.cfg in the server configuration. To do this copy config.default.json in the web-platform-tests root to config.json. Then edit the JSON so that the key ssl/openssl/base_conf_path has a value that is the path to the OpenSSL config file.

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.

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. The first time you use this it has to generate a manifest of all tests. This may take some time, so please be patient.

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.

Branches

In the vast majority of cases the only upstream branch that you should need to care about is master. If you see other branches in the repository, you can generally safely ignore them.

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 topic.
  • Make your changes.
  • Run the lint script described below.
  • Commit locally and push that to your repo.
  • Send in a pull request based on the above.

Lint tool

We have a lint tool for catching common mistakes in test files. You can run it manually by starting the lint executable from the root of your local web-platform-tests working directory like this:

./lint

The lint tool is also run automatically for every submitted pull request, and reviewers will not merge branches with tests that have lint errors, so you must fix any errors the lint tool reports. For details on doing that, see the lint-tool documentation.

But in the unusual case of error reports for things essential to a certain test or that for other exceptional reasons shouldn't prevent a merge of a test, update and commit the lint.whitelist file in the web-platform-tests root directory to suppress the error reports. For details on doing that, see the lint-tool documentation.

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., for 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.

Test Review

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.

Getting Involved

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.

Documentation