2d.filter.layers.convolveMatrix.exceptions.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /html/canvas/offscreen/filters/2d.filter.layers.convolveMatrix.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.convolveMatrix.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.convolveMatrix.exceptions</h1>

<p class="desc">Test exceptions on CanvasFilter() convolveMatrix</p>

<script>

var t = async_test("Test exceptions on CanvasFilter() convolveMatrix");

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: 'convolveMatrix'}}); });

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

    {name: 'convolveMatrix', divisor: 2}}); });

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

    {name: 'convolveMatrix', kernelMatrix: null}}); });

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

    {name: 'convolveMatrix', kernelMatrix: 1}}); });

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

    {name: 'convolveMatrix', kernelMatrix: [[1, 0], [0]]}}); });

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

    {name: 'convolveMatrix', kernelMatrix: [[1, 'a'], [0]]}}); });

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

    {name: 'convolveMatrix', kernelMatrix: [[1, 0], 0]}}); });

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

    {name: 'convolveMatrix', kernelMatrix: [[1, 0], [0, Infinity]]}}); });

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

    {name: 'convolveMatrix', kernelMatrix: []}}); });

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

    {name: 'convolveMatrix', kernelMatrix: [1]}}); });

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

    {name: 'convolveMatrix', kernelMatrix: [1, 2, 3, 4]}}); });

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

    {name: 'convolveMatrix', kernelMatrix: [[], []]}}); });

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

    {name: 'convolveMatrix', kernelMatrix: [[1, 2], []]}}); });

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

    {name: 'convolveMatrix', kernelMatrix: [[], [1, 2]]}}); });

  // This should not throw an error

  ctx.beginLayer({filter:

    {name: 'convolveMatrix', kernelMatrix: [[]]}});

  ctx.endLayer();

  ctx.beginLayer({filter:

    {name: 'convolveMatrix', kernelMatrix: [[1]]}});

  ctx.endLayer();

  t.done();

});

</script>