NOTE: THIS IS A PRELIMINARY DRAFT, AND MAY BE OBSOLETED OR REVISED AT ANY TIME
Tests below evaluate the ability of browsers to render CSS2 information according to accepted behavior. The tests below are given as examples. There is one test case included for each testable statement of the CSS2 specification. Not included are informative units, or units for which there were no testable statements. It is attempted to use the same style sheets within each section, to limit what is being tested. The purpose of these tests is to compare CSS2 implementations against the CSS2 specification, or to demonstrate interoperability of CSS2 implementations from different vendors.
Each test has one or more style sheets, a testable statement, a heading describing the test, and a pass criterion (including one or more reference snapshots for comparison). The "pass criterion" portion covers the style sheet implementation; the rest of the page is just HTML. This is again to limit what is being tested for each test and to control the test environment. The tests assume that no personal stylesheets are being used, and User Agent default information cannot be tested; in addition, other factors may affect whether or not the tests are passed. Various assumptions are made, including support for appropriate CSS2 properties. The tests should be able to stand alone, or be used in combination. Also, it is possible to test more than one testable statement in a single test case, although this has not been done here. One should know by looking directly at the browser's rendition and the comparison snapshots whether a test has been passed, although it is possible to look at the source code also.
You have the ability to enter your test information, view previous test results,comment on particular tests, or propose new tests. Results of the tests are available to any visitor to the site.
Running your browser through the test suite is a way for you to contribute to the collective knowledge of the Web development community. When you participate, you will be offered a series of tests, each of which depicts a particular CSS2 fragment. You will be asked to indicate whether your browser seems to render the CSS2 according to acceptable behavior.
Help information is included below, in the sense that if one wants to test a particular function, there is a mapping of that function to tests for it below. In addition, there is a reference parser under development for CSS2.
You may take one, some, or all of the tests. There are some 220 tests included here under development. The syntax of the test name is "xxx-y.htm", where "xxx"refers to the CSS2 structural unit, and "y" refers to the position of the testable statement within that unit. To take a test, just click on the test name, and a rendition should appear on your screen.
Comments are appreciated. This is a preliminary draft ( a strawman), being made available for public review and comment. Please send comments to: frederick.boland@nist.gov, or to the www-style mailing list. These tests are not complete. NOTE: The reference images displayed in each test are samples only. The tests need to be customized for each particular purpose.
Functionality included here is from Appendix B of the CSS2 draft, given as here To find out more about the World Wide Web Consortium, click here.
If you wish, you can assign your browser a score by comparing your browser rendition against the reference images and descriptions of how the rendering should appear. Your score may range from 1 (poor-totally dissimilar) to 10 (excellent-exactly the same). Things to consider include degree of similarity in color, positioning, and general appearance.
NIST assumes no liability for dissemination of this information, but is making it available in the public interest.
Thank you very much.
Click on the appropriate unit number of the CSS2 specification to retrieve the test(s) for that unit, or look at the function(s) desired to determine what tests to run.