| <!DOCTYPE html> |
| <title>CSS Fonts 4 test: parsing the tech() function in the src descriptor</title> |
| <link rel="help" href="https://drafts.csswg.org/css-fonts/#font-face-src-parsing"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <style id="testStyle"> |
| </style> |
| <script> |
| const sheet = testStyle.sheet; |
| tests = [ |
| // No tech() function |
| { src: 'url("foo.ttf")', valid: true }, |
| // Empty tech() is not valid |
| { src: 'url("foo.ttf") tech()', valid: false }, |
| // Check that each valid keyword is accepted |
| { src: 'url("foo.ttf") tech(features-opentype)', valid: true }, |
| { src: 'url("foo.ttf") tech(features-aat)', valid: true }, |
| { src: 'url("foo.ttf") tech(color-COLRv0)', valid: true }, |
| { src: 'url("foo.ttf") tech(color-COLRv1)', valid: true }, |
| { src: 'url("foo.ttf") tech(color-sbix)', valid: true }, |
| { src: 'url("foo.ttf") tech(color-CBDT)', valid: true }, |
| { src: 'url("foo.ttf") tech(variations)', valid: true }, |
| { src: 'url("foo.ttf") tech(palettes)', valid: true }, |
| // tech() does not accept strings (unlike format()!) |
| { src: 'url("foo.ttf") tech("features-opentype")', valid: false }, |
| { src: 'url("foo.ttf") tech("color-COLRv0")', valid: false }, |
| { src: 'url("foo.ttf") tech("variations")', valid: false }, |
| // tech() accepts a comma-separated list of keywords |
| { src: 'url("foo.ttf") tech(features-opentype, color-COLRv0, variations, palettes)', valid: true }, |
| { src: 'url("foo.ttf") tech(features-opentype color-COLRv0 variations palettes)', valid: false }, |
| // Invalid font-tech keywords should be a parse error |
| { src: 'url("foo.ttf") tech(feature-opentype)', valid: false }, |
| { src: 'url("foo.ttf") tech(feature-aat)', valid: false }, |
| { src: 'url("foo.ttf") tech(feature-graphite)', valid: false }, |
| { src: 'url("foo.ttf") tech(auto)', valid: false }, |
| { src: 'url("foo.ttf") tech(default)', valid: false }, |
| { src: 'url("foo.ttf") tech(inherit)', valid: false }, |
| { src: 'url("foo.ttf") tech(initial)', valid: false }, |
| { src: 'url("foo.ttf") tech(none)', valid: false }, |
| { src: 'url("foo.ttf") tech(normal)', valid: false }, |
| { src: 'url("foo.ttf") tech(xyzzy)', valid: false }, |
| { src: 'url("foo.ttf") tech(xyzzy, features-opentype)', valid: false }, |
| { src: 'url("foo.ttf") tech(features-opentype, xyzzy)', valid: false }, |
| // format() function must precede tech() if both are present |
| { src: 'url("foo.ttf") format(opentype) tech(features-opentype)', valid: true }, |
| { src: 'url("foo.ttf") tech(features-opentype) format(opentype)', valid: false }, |
| // Unsupported technology (for example: no browser has incremental transfer yet), might be |
| // dropped from the list, next component of the list should be accepted. |
| { src: 'url("foo.ttf") tech(incremental), url("bar.html")', dontcomparetech: true, valid: true }, |
| { src: 'url("foo.ttf") tech(incremental, color-SVG, features-graphite, features-aat), url("bar.html")', dontcomparetech: true, valid: true }, |
| { src: 'url("foo.ttf") tech(color-SVG, features-graphite), url("bar.html")', dontcomparetech: true, valid: true }, |
| { src: 'url("foo.ttf") tech(color-SVG), url("bar.html")', dontcomparetech: true, valid: true }, |
| { src: 'url("foo.ttf") tech(features-graphite), url("bar.html")', dontcomparetech: true, valid: true }, |
| // No invalid functions. |
| { src: 'url("foo.ttf") dummy("opentype") tech(variations)', valid: false }, |
| { src: 'url("foo.ttf") dummy("opentype") dummy(variations)', valid: false }, |
| { src: 'url("foo.ttf") format(opentype) tech(features-opentype) dummy(something)', valid: false }, |
| // A parsing error in one component does not make the entire descriptor invalid. |
| { src: 'url("foo.ttf") format(dummy), url("foo.ttf") tech(variations)', valid: true }, |
| // check_same_tech isn't currently smart enough to handle this. |
| { src: 'url("foo.ttf") tech(color), url("bar.html")', dontcomparetech: true, valid: true }, |
| ]; |
| |
| // Assert that the two arguments have the same set of keywords in the tech() function, |
| // (although their ordering may differ). |
| function check_same_tech(serialized, specified) { |
| if (!specified.includes("tech(")) { |
| assert_false(serialized.includes("tech("), "expected no tech() function"); |
| return; |
| } |
| // Extract the lists of tech() keywords and sort them for comparison. |
| const tech = /tech\((.+)\)/; |
| var specified_techs = tech.exec(specified)[1].split(/,\s*/).sort().join(", "); |
| var serialized_techs = tech.exec(serialized)[1].split(/,\s*/).sort().join(", "); |
| // Per CSSOM spec, keywords are serialized in ASCII-lowercase form: |
| // https://drafts.csswg.org/cssom/#serialize-a-css-component-value |
| assert_equals(serialized_techs, specified_techs.toLowerCase(), "expected matching tech() lists"); |
| } |
| |
| for (let t of tests) { |
| test(() => { |
| assert_equals(sheet.cssRules.length, 0, "testSheet should initially be empty"); |
| sheet.insertRule("@font-face { src: " + t.src + "}"); |
| try { |
| assert_equals(sheet.cssRules[0].style.getPropertyValue("src") != "", t.valid); |
| if (t.valid && !t.dontcomparetech) { |
| check_same_tech(sheet.cssRules[0].style.getPropertyValue("src"), t.src); |
| } |
| } finally { |
| sheet.deleteRule(0); |
| } |
| }, "Check that src: " + t.src + " is " + (t.valid ? "valid" : "invalid")); |
| } |
| </script> |
