2d.text.measure.text-clusters-split.tentative.html

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This test has a WPT meta file that expects 1 subtest issues.
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- /html/canvas/element/text/2d.text.measure.text-clusters-split.tentative.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->

<meta charset="UTF-8">

<title>Canvas test: 2d.text.measure.text-clusters-split.tentative</title>

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

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

<script src="/html/canvas/resources/canvas-tests.js"></script>

<link rel="stylesheet" href="/html/canvas/resources/canvas-tests.css">

<body class="show_output">

<h1>2d.text.measure.text-clusters-split.tentative</h1>

<p class="desc">Test that getTextClusters() splits the input correctly into the minimal clusters, keeping emojis together.</p>

<p class="output">Actual output:</p>

<canvas id="c" class="output" width="400" height="200"><p class="fallback">FAIL (fallback content)</p></canvas>

<ul id="d"></ul>

<script>

var t = async_test("Test that getTextClusters() splits the input correctly into the minimal clusters, keeping emojis together.");

_addTest(function(canvas, ctx) {

  ctx.font = '50px serif';

  const text = 'ABC ☺️❤️';

  ctx.fillText(text, 20, 100);

  const tm = ctx.measureText(text);

  const clusters = tm.getTextClusters();

  // Should return 6 clusters(A|B|C| |☺️|❤️).

  _assertSame(clusters.length, 6, "clusters.length", "6");

  // A from position 0 to 1.

  _assertSame(clusters[0].begin, 0, "clusters[\""+(0)+"\"].begin", "0");

  _assertSame(clusters[0].end, 1, "clusters[\""+(0)+"\"].end", "1");

  // B from position 1 to 2.

  _assertSame(clusters[1].begin, 1, "clusters[\""+(1)+"\"].begin", "1");

  _assertSame(clusters[1].end, 2, "clusters[\""+(1)+"\"].end", "2");

  // C from position 2 to 3.

  _assertSame(clusters[2].begin, 2, "clusters[\""+(2)+"\"].begin", "2");

  _assertSame(clusters[2].end, 3, "clusters[\""+(2)+"\"].end", "3");

  // space from position 3 to 4.

  _assertSame(clusters[3].begin, 3, "clusters[\""+(3)+"\"].begin", "3");

  _assertSame(clusters[3].end, 4, "clusters[\""+(3)+"\"].end", "4");

  // ☺️ from position 4 to 6.

  _assertSame(clusters[4].begin, 4, "clusters[\""+(4)+"\"].begin", "4");

  _assertSame(clusters[4].end, 6, "clusters[\""+(4)+"\"].end", "6");

  // ❤️ from position 6 to 8.

  _assertSame(clusters[5].begin, 6, "clusters[\""+(5)+"\"].begin", "6");

  _assertSame(clusters[5].end, 8, "clusters[\""+(5)+"\"].end", "8");

});

</script>