blob: bd1e3760847d1577cd76faf39e4d177195c3af63 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
|
// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
// OffscreenCanvas test in a worker:2d.layer.exceptions-are-no-op
// Description:Checks that the context state is left unchanged if beginLayer throws.
// Note:
importScripts("/resources/testharness.js");
importScripts("/html/canvas/resources/canvas-tests.js");
var t = async_test("Checks that the context state is left unchanged if beginLayer throws.");
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');
// Get `beginLayer` to throw while parsing the filter.
assert_throws_js(TypeError,
() => ctx.beginLayer({filter: {name: 'colorMatrix',
values: 'foo'}}));
// `beginLayer` shouldn't have opened the layer, so `endLayer` should throw.
assert_throws_dom("InvalidStateError", () => ctx.endLayer());
t.done();
});
done();
|