2d.state.saverestore.underflow.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.underflow.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

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

<title>OffscreenCanvas test: 2d.state.saverestore.underflow</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.underflow</h1>

<p class="desc">restore() with an empty stack has no effect</p>

<script>

var t = async_test("restore() with an empty stack has no effect");

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');

  for (var i = 0; i < 16; ++i)

      ctx.restore();

  ctx.lineWidth = 0.5;

  ctx.restore();

  _assertSame(ctx.lineWidth, 0.5, "ctx.lineWidth", "0.5");

  t.done();

});

</script>