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Test Info:

<!DOCTYPE html>
<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/ -->
<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>
<p class="desc">restore() with an empty stack has no effect</p>
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.lineWidth = 0.5;
_assertSame(ctx.lineWidth, 0.5, "ctx.lineWidth", "0.5");