diff options
Diffstat (limited to 'testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfercontrol.to.offscreen.html')
-rw-r--r-- | testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfercontrol.to.offscreen.html | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfercontrol.to.offscreen.html b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfercontrol.to.offscreen.html new file mode 100644 index 0000000000..fea375b2ad --- /dev/null +++ b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfercontrol.to.offscreen.html @@ -0,0 +1,34 @@ +<!DOCTYPE html> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<script src="/html/canvas/resources/canvas-tests.js"></script> +<link rel="help" href="https://html.spec.whatwg.org/#dom-canvas-transfercontroltooffscreen"> +<script> + +test(function() { + var placeholder = document.createElement('canvas'); + placeholder.width = 100; + placeholder.height = 50; + var offscreenCanvas = placeholder.transferControlToOffscreen(); + assert_equals(offscreenCanvas.width, 100); + assert_equals(offscreenCanvas.height, 50); +}, "Test that an OffscreenCanvas generated by transferControlToOffscreen gets correct width and height"); + +test(function() { + var placeholder = document.createElement('canvas'); + placeholder.width = 100; + placeholder.height = 50; + var offscreenCanvas = placeholder.transferControlToOffscreen(); + assert_throws_dom("InvalidStateError", function() { placeholder.getContext('2d'); }); +}, "Test that calling getContext on a placeholder canvas that has already transferred its control throws an exception"); + +test(function() { + var placeholder = document.createElement('canvas'); + placeholder.width = 100; + placeholder.height = 50; + var offscreenCanvas = placeholder.transferControlToOffscreen(); + assert_throws_dom("InvalidStateError", function() { placeholder.transferControlToOffscreen(); }); +}, "Test that calling transferControlToOffscreen twice throws an exception"); + +</script> + |