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Test Suites for Web Platform specifications—including WHATWG, W3C and others
HTML JavaScript Python CSS Haxe Makefile
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2dcontext CanvasGradient#addColorStop should throw for invalid colors and offsets
DOMEvents Fix dictionary member conversion failure (fixes #7231)
FileAPI Adding for support Blob.{close,isClose} #6723
IndexedDB Remove use of assert_object_equals() from IndexedDB tests.
WebCryptoAPI Add a test for crypto.getRandomValues in workers.
WebIDL Upstream DOMException constructor cases from Blink
XMLHttpRequest Also add test to setrequestheader-header-allowed
ambient-light Update some IDLs to match specs better.
app-uri Remove stale copies of testharness.js.
battery-status Improve unplugging tests for Battery Status API
common Move failing-test.html out of common.
conformance-checkers [cc] Updated some tests w/ ARIA warnings.
content-security-policy remove one more unattached event handler
cors Remove existing console.* instances in the suite.
csp Mozilla CSP tests
custom-elements Stop using innerText.
docs Document unique filename requirement for CSS tests; fixes #2095
dom Add tests for CharacterDataMethods with non-BMP code points
domparsing Merge pull request #1891 from scillali/scillali-patch-1
domxpath Fix tests that have duplicate names.
editing Do not request images from other domains
encoding Remove references to nonexistent script
eventsource Rewrite event source test to be less time dependant
ext-xhtml-pubid/the-xhtml-syntax/parsing-xhtml-documents Convert files with only CRLF line endings to pure LF
fetch/nosniff Address nits from @mikewest
fonts move hierarchy to the root
gamepad Add some basic manual tests and an idlharness test for Gamepad API.
geolocation-API Merge pull request #348 from zqzhang/submission/zqzhang/geo-idl-test-…
hr-time Timestamp fix for issue #5690
html-imports Remove existing console.* instances in the suite.
html-longdesc Remove implementation reports.
html-media-capture Make assertion more common about data storage
html Fix document.forms.item test
http Add a test for respecting the HTTP content length header.
images Merge pull request #293 from onlimii/submission/jcxia-fileapi-url
infrastructure Move failing-test.html out of common.
js Merge pull request #2037 from w3c/SetPrototypeOf-window
media-source check for correct webm duration
media add cross-origin accessible subtitle example
mediacapture-streams Remove existing console.* instances in the suite.
microdata Remove all manifest files from subdirectories
mixed-content Mixed-Content: Generate WebSocket tests.
navigation-timing Remove references to webidl2.js.
notifications Update notifications tag same description of pass condition
old-tests/submission Fix script scheduling test and make it less timing sensitive
page-visibility Removed trailing whitespaces and tabs. Removed webperf specs from lin…
performance-timeline Address review comments on the Performance Timeline tests.
pointerevents Rewrite pointerevent_constructor to avoid the explicit_done.
pointerlock Revolves https://critic.hoppipolla.co.uk/showcomment?chain=1124
progress-events Move the test for cross-origin progress events into place.
proximity Remove references to webidl2.js.
quirks-mode Move font-element-text-decoration-color tests from Quirks to HTML Ren…
referrer-policy Referrer-Policy: Remove dead code in wrapResult.
resource-timing Correct initiatorType of iframe element
resources @ 42d79d0 Update to latest testharness.js
screen-orientation Remove "orientation-" prefix in Screen Orientation test name
selection Increase timeout on selection/addRange.html to avoid intermittent tim…
selectors-api/tests/submissions/Opera Fix other tests that use the ParentNode-querySelector-All.js script.
selectors/attribute-selectors/attribute-case Use an actually-really-invalid selector for the invalid selector sani…
service-workers Remove tests with embedded credentials from cache-match and cache-put
shadow-dom Use deepPath for event path trimming.
subresource-integrity Added tests for alternative style. Reshuffled code to allow for multi…
svg Mention desired directory structure.
tools @ ae5515f Update to latest wpttools
touch-events fix undefined function check_starting_element
typedarrays Update test as per review
uievents Address linting errors in uievent checkin
url Use correct pathname for URL test
user-timing Removed trailing whitespaces and tabs. Removed webperf specs from lin…
vibration Remove a tab from vibration/.
web-animations Remove references to webidl2.js.
webaudio test currentTime at end of OfflineAudioContext rendering
webdriver Stop using innerText.
webgl Remove all manifest files from subdirectories
webmessaging Remove duplicate tests against MessagePort
webrtc Set character encoding
websockets Add a test for clamping in WebSocket#close.
webstorage Avoid timeouts in quota tests by putting bigger data chunks
webvtt fixup! Fix reftests missing rel=match excluding webvtt tests.
workers Add a test for invalid utf-8 in workers.
.gitignore Support running tests with SSL.
.gitmodules Move the tools directory into its own repo.
.travis.yml [infra] Cause Travis to start builds much faster.
CONTRIBUTING.md Further modifications to the CLA text.
LICENSE actual license
README.md Don't suggest putting the author's name in the topic branch.
config.default.json Add doc_root and ws_doc_root defaulting to null in config.default.json.
lint Update manifest to support reftest chains.
lint.whitelist exclude .sub.svg file from lint
manifest Make sure we supply the correct test root when generating the manifest.
serve Pass routes in to servers rather than relying on global state.
serve.py Serve: Remove misleading shebang.
server-side.md Make tests self-hosting
testharness_runner.html Add testharness_runner file here for now.

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. 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

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.

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 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

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