2d.state.saverestore.lineWidth.html

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This WPT test may be referenced by the following Test IDs:
- /html/canvas/offscreen/the-canvas-state/2d.state.saverestore.lineWidth.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.state.saverestore.lineWidth</title>

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

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

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

<h1>2d.state.saverestore.lineWidth</h1>

<p class="desc">save()/restore() works for lineWidth</p>

<script>

var t = async_test("save()/restore() works for lineWidth");

var t_pass = t.done.bind(t);

var t_fail = t.step_func(function(reason) {

    throw reason;

});

t.step(function() {

  var canvas = new OffscreenCanvas(100, 50);

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

  // Test that restore() undoes any modifications

  var old = ctx.lineWidth;

  ctx.save();

  ctx.lineWidth = 0.5;

  ctx.restore();

  _assertSame(ctx.lineWidth, old, "ctx.lineWidth", "old");

  // Also test that save() doesn't modify the values

  ctx.lineWidth = 0.5;

  old = ctx.lineWidth;

      // we're not interested in failures caused by get(set(x)) != x (e.g.

      // from rounding), so compare against 'old' instead of against 0.5

  ctx.save();

  _assertSame(ctx.lineWidth, old, "ctx.lineWidth", "old");

  ctx.restore();

  t.done();

});

</script>