[Gecko Bug 1461589] Add/update CSS parsing tests to cover font-variant-emoji. #36611
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Differential Revision: https://phabricator.services.mozilla.com/D147496 bugzilla-url: https://bugzilla.mozilla.org/show_bug.cgi?id=1461589 gecko-commit: 98090ae94c2f7f1f36cf9d30b67fbd98d4556bc5 gecko-reviewers: layout-reviewers, emilio
These tests assume the system has both text- and emoji-style glyphs available for U+263A, the old WHITE SMILING FACE symbol that has long existed in legacy fonts, and now also supports an emoji-style rendering. If two distinct presentations are not available, the first (mismatch) test will fail. The spec says: > Even when font-variant-emoji is used, the presence of Variation Selector 15 (U+FE0E) or Variation Selector 16 (U+FE0F) > in the contents of an element override the rendering specified in font-variant-emoji. > Therefore, font-variant-emoji sets a default presentation which the text being rendered can opt out of. So the second test checks that U+263A responds to the property as expected, and that the variation selectors can still override it. Depends on D147496 Differential Revision: https://phabricator.services.mozilla.com/D159495 bugzilla-url: https://bugzilla.mozilla.org/show_bug.cgi?id=1461589 gecko-commit: c1a7287807c1bdbf5d40c4a20ac316f0171d9f32 gecko-reviewers: emilio
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Differential Revision: https://phabricator.services.mozilla.com/D147496
bugzilla-url: https://bugzilla.mozilla.org/show_bug.cgi?id=1461589
gecko-commit: 98090ae94c2f7f1f36cf9d30b67fbd98d4556bc5
gecko-reviewers: layout-reviewers, emilio