Cascading Style Sheets Official W3C Test Suites
Interoperability
“Interoperability is the ability of two or more systems or
components to exchange information and to use the information that
has been exchanged.” — IEEE
Help wanted
Interoperability is important to web designers. Better
interoperability among CSS implementations means designers can
write their CSS for one browser and see that it works predictably
well on the other browsers. It means reducing the incompatibilities
in the way CSS implementations interpret CSS.
Good test suites drive interoperability. They are a key part of
making sure web standards are implemented correctly and
consistently. More tests encourage more interoperability. Wrong
tests drive interoperability on wrong behavior.
CSS needs good test suites! The W3C hosts the official test
suites for the CSS Specifications
here. Most of these test suites are still works in progress:
they're incomplete and may contain errors. You can help us
drive CSS interoperability on the Web by
reporting errors and
contributing test cases. Send questions, comments, error
reports, and test submissions to the
public-css-testsuite mailing list.
About the Test Suites
Release phase definitions:
- Final
- Test suite is complete with no known or suspected bugs. At
least two implementations pass, and the specification has reached
Recommendation status.
- Release Candidate
- Test suite is complete with no known or suspected bugs. At
least one implementation passes almost all tests.
- Beta
- Test suite has complete coverage of the spec. It may have some
bugs but is expected to be mostly reliable. At least one
implementation passes a majority of the tests.
- Alpha
- Test suite has complete if not thorough coverage of the spec,
but is expected to require some revision.
- Pre-Alpha
- Test suite is incomplete and/or known to contain bugs at time
of publication.
- Obsolete
- Test suite may or may not be complete, but is no longer
maintained and is known to contain bugs or is otherwise not
recommended for conformance testing.
Archives and Organization
Test suites are occasionally updated, but old versions remain
on-line. If you link to a test suite, you can choose whether to
link to a specific, dated version or to the dynamic "current"
version.
The URLs of tests for CSS3 modules are of the form:
.../CSS3/MODULE/current
.../CSS3/MODULE/YYYYMMDD
where MODULE is the (capitalized) module
name, e.g., "Selectors", and YYYYMMDD is a
date, e.g., "20011105". The "current" link always redirects to the
most recent dated test suite.
The URLs of tests for profiles are of the form:
.../PROFILE/VERSION/current
.../PROFILE/VERSION/YYYYMMDD
where PROFILE is the name of a CSS profile, e.g.,
"Mobile" and VERSION is a version number, e.g., "1.0".
Bert Bos, style
activity lead
Copyright © 1994-2011 W3C®
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Created 13 November 2001. Last updated 25 January 2011
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Created 13 November 2001. Last updated 26 January 2011
>>>>>>> 1.22
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Created 13 November 2001. Last updated 19 April 2011
>>>>>>> 1.27
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Created 13 November 2001. Last updated 4 May 2011
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Created 13 November 2001. Last updated Tue 04 Oct 2011 06:20:42
AM CEST
>>>>>>> 1.83