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chromium/third_party/blink/web_tests/fast/canvas/shadow-huge-blur.html 

<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
    
<body>
<script>
test(function(t) {

    var canvas = document.body.appendChild(document.createElement("canvas"));
    canvas.width = "400";
    canvas.height = "400";
    var ctx = canvas.getContext('2d');
    ctx.shadowBlur = 10500000000;
    ctx.shadowColor = "green";
    ctx.fillRect(0, 0, 10, 10);

}, 'Verify that setting a huge value in shadowBlur does not crash.');
</script>
</body>