2d.text.measure.width.empty.html

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This WPT test may be referenced by the following Test IDs:
- /html/canvas/offscreen/text/2d.text.measure.width.empty.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>OffscreenCanvas test: 2d.text.measure.width.empty</title>

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

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

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

<h1>2d.text.measure.width.empty</h1>

<p class="desc">The empty string has zero width</p>

<script>

promise_test(async t => {

  var canvas = new OffscreenCanvas(100, 50);

  var ctx = canvas.getContext('2d');

  var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");

  f.load();

  document.fonts.add(f);

  await document.fonts.ready;

  ctx.font = '50px CanvasTest';

  _assertSame(ctx.measureText("").width, 0, "ctx.measureText(\"\").width", "0");

}, "The empty string has zero width");

</script>