diff options
Diffstat (limited to 'testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.exceptions-are-no-op.worker.js')
-rw-r--r-- | testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.exceptions-are-no-op.worker.js | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.exceptions-are-no-op.worker.js b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.exceptions-are-no-op.worker.js new file mode 100644 index 0000000000..bd1e376084 --- /dev/null +++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.exceptions-are-no-op.worker.js @@ -0,0 +1,27 @@ +// 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(); |