2d.filter.layers.blur.exceptions.html

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This WPT test may be referenced by the following Test IDs:
- /html/canvas/offscreen/filters/2d.filter.layers.blur.exceptions.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.filter.layers.blur.exceptions</title>

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

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

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

<h1>2d.filter.layers.blur.exceptions</h1>

<p class="desc">Test exceptions on gaussianBlur filter</p>

<script>

var t = async_test("Test exceptions on gaussianBlur filter");

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');

  assert_throws_js(TypeError, function() { ctx.beginLayer({filter:

    {name: 'gaussianBlur'}}); });

  assert_throws_js(TypeError, function() { ctx.beginLayer({filter:

    {name: 'gaussianBlur', stdDeviation: undefined}}); });

  assert_throws_js(TypeError, function() { ctx.beginLayer({filter:

    {name: 'gaussianBlur', stdDeviation: 'foo'}}); });

  assert_throws_js(TypeError, function() { ctx.beginLayer({filter:

    {name: 'gaussianBlur', stdDeviation: [1,2,3]}}); });

  assert_throws_js(TypeError, function() { ctx.beginLayer({filter:

    {name: 'gaussianBlur', stdDeviation: NaN}}); });

  assert_throws_js(TypeError, function() { ctx.beginLayer({filter:

    {name: 'gaussianBlur', stdDeviation: {}}}); });

  t.done();

});

</script>