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chromium/third_party/blink/web_tests/external/wpt/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.string.html 

<!DOCTYPE html>
<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
<title>OffscreenCanvas test: 2d.imageData.object.string</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/html/canvas/resources/canvas-tests.js"></script>

<h1>2d.imageData.object.string</h1>
<p class="desc">ImageData.data converts strings to numbers with ToNumber</p>


<script>
var t = async_test("ImageData.data converts strings to numbers with ToNumber");
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');

  var imgdata = ctx.getImageData(0, 0, 10, 10);
  imgdata.data[0] = 100;
  imgdata.data[0] = "110";
  _assertSame(imgdata.data[0], 110, "imgdata.data[\""+(0)+"\"]", "110");
  imgdata.data[0] = 100;
  imgdata.data[0] = "0x78";
  _assertSame(imgdata.data[0], 120, "imgdata.data[\""+(0)+"\"]", "120");
  imgdata.data[0] = 100;
  imgdata.data[0] = " +130e0 ";
  _assertSame(imgdata.data[0], 130, "imgdata.data[\""+(0)+"\"]", "130");
  t.done();

});
</script>