generic-family-keywords-003.html

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This test has a WPT meta file that expects 7 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /css/css-fonts/generic-family-keywords-003.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>Test quotes vs. no-quotes matchings of generic font family keywords in a CanvasRenderingContext2D</title>

<link rel="help" href="https://drafts.csswg.org/css-fonts-4/#family-name-syntax">

<link rel="author" title="Frédéric Wang" href="mailto:fwang@igalia.com">

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script src="/css/css-fonts/support/font-family-keywords.js"></script>

<link rel="stylesheet" type="text/css" href="/fonts/ahem.css"/>

<body>

<canvas id="canvas" width="400" height="150"></canvas>

<script>

  setup({ explicit_done: true });

  window.addEventListener("load", () => { document.fonts.ready.then(runTests); });

  function runTests() {

    const measured_text = "|||||";

    const canvas = document.getElementById("canvas");

    const ctx = canvas.getContext("2d");

    ctx.font = `25px Ahem`;

    let ahem_expected_width = ctx.measureText(measured_text).width;

    kGenericFontFamilyKeywords.forEach(keyword => {

      test(() => {

         ctx.font = `25px ${keyword}`;

         let expected_width = ctx.measureText(measured_text).width;

        // Insert the @font-face rules for quoted and unquoted keywords.

        document.documentElement.insertAdjacentHTML('beforeend', `

<style>

@font-face {

  font-family: ${keyword};

  src: local(Ahem), url('/fonts/Ahem.ttf');

</style>

<style>

@font-face {

  font-family: "${keyword}";

  src: local(Ahem), url('/fonts/Ahem.ttf');

</style>`);

        ctx.font = `25px ${keyword}`;

        let unquoted_width = ctx.measureText(measured_text).width;

        assert_equals(unquoted_width, expected_width, `unquoted ${keyword} does not match @font-face rule`);

        ctx.font = `25px "${keyword}"`;

        let quoted_width = ctx.measureText(measured_text).width;

        assert_equals(quoted_width, ahem_expected_width, `quoted ${keyword} matches  @font-face rule`);

      }, `@font-face matching for quoted and unquoted ${keyword} (drawing text in a canvas)`);

});

    done();

</script>

</body>