draw-element-image-detached.tentative.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /html/canvas/element/manual/draw-element-image/draw-element-image-detached.tentative.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>Canvas.drawElementImage: Throw on lack of layout</title>

<link rel="help" href="https://github.com/WICG/html-in-canvas">

<link rel="author" href="mailto:schenney@chromium.org">

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

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

<style>

#child {

  width: 100px;

  height: 100px;

  background: #01ff02;

</style>

<script>

  promise_test(async t => {

    let canvas = window.document.createElement("canvas");

    canvas.setAttribute("layoutsubtree", "");

    let child = window.document.createElement("div");

    child.setAttribute("id", "child");

    canvas.appendChild(child);

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

    ctx.fillStyle = 'rgb(3, 4, 5)';

    ctx.fillRect(0, 0, 200, 200);

    assert_throws_dom(

      "InvalidStateError",

      () => ctx.drawElementImage(child, 20, 30),

      "Can't draw into a detached canvas.");

  }, 'canvas drawElementImage throws for a detached canvas due to lack of layout');

</script>