- From: Gérard Talbot <css21testsuite@gtalbot.org>
- Date: Sun, 1 Jul 2012 17:42:01 -0400
- To: "Geoffrey Sneddon" <gsneddon@opera.com>
- Cc: "public-css-testsuite@w3.org" <public-css-testsuite@w3.org>, "Richard Ishida" <ishida@w3.org>
Le Dim 1 juillet 2012 15:13, Geoffrey Sneddon a écrit : > Hey, > > Every few months I've got asked questions by colleagues as to what > construes a pass for various bidi tests with a pass condition such as, > "Test passes if characters are in the same order". > > These questions normally resolve around whether two glyphs are > realizations of the same grapheme (i.e., they are allographs). This has > been especially problematic in cases where we've failed to render > ligatures correctly, and hence the deviation from the reference image is > even greater. > > Attached are a couple of examples of the sort of result that causes > issues (direction-unicode-bidi-017 and direction-unicode-bidi-026 > respectively). [RC6] http://test.csswg.org/suites/css2.1/20110323/html4/direction-unicode-bidi-017.htm [RC6] http://test.csswg.org/suites/css2.1/20110323/html4/direction-unicode-bidi-026.htm > I believe both screenshots represent a pass, though > Arabic is not a language I'm immensely familiar with. :) > > I wonder how many of the bidi tests could be rewritten to be reftests, > and have a (very) small set of manually inspected pages (I wonder if > there's any way to get a better reference text in cases where a reftest > isn't possible?)… Any ideas? (I starred at the bidi algorithm for a bit, > then realized I'd need to spend far more time than it's really worth now > to get that all in my head again.) The tested sentence specifically request a serif font but the comparing image uses a non-serif font. This can only contribute to create a differential rendering. Ideally, the list of fonts should at least start with the same font with which the reference image was created. And then the generic sans-serif font should end the declaration. There are other minor issues with those 2 tests. +CC: Richard Ishida Gérard -- Contributions to the CSS 2.1 test suite: http://www.gtalbot.org/BrowserBugsSection/css21testsuite/ CSS 2.1 Test suite RC6, March 23rd 2011: http://test.csswg.org/suites/css2.1/20110323/html4/toc.html CSS 2.1 test suite harness: http://test.csswg.org/harness/ Contributing to to CSS 2.1 test suite: http://www.gtalbot.org/BrowserBugsSection/css21testsuite/web-authors-contributions-css21-testsuite.html
Received on Sunday, 1 July 2012 21:42:30 UTC