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| 1 Test OffscreenCanvas transferable with exception cases. |
| 2 |
| 3 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE
". |
| 4 |
| 5 |
| 6 PASS ctx = offscreenCanvas1.getContext('2d') did not throw exception. |
| 7 PASS ctx is an instance of OffscreenCanvasRenderingContext2D |
| 8 PASS worker.postMessage({data: offscreenCanvas1}, [offscreenCanvas1]) threw exce
ption DataCloneError: Failed to execute 'postMessage' on 'Worker': An OffscreenC
anvas with a context could not be cloned.. |
| 9 PASS offscreenCanvas2.transferToImageBitmap() threw exception InvalidStateError:
Failed to execute 'transferToImageBitmap' on 'OffscreenCanvas': Cannot transfer
an ImageBitmap from a detached OffscreenCanvas. |
| 10 PASS worker.postMessage({data: offscreenCanvas2}, [offscreenCanvas2]) threw exce
ption DataCloneError: Failed to execute 'postMessage' on 'Worker': An OffscreenC
anvas is detached and could not be cloned.. |
| 11 PASS offscreenCanvas2.getContext('2d') threw exception InvalidStateError: Failed
to execute 'getContext' on 'OffscreenCanvas': OffscreenCanvas object is detache
d. |
| 12 PASS successfullyParsed is true |
| 13 |
| 14 TEST COMPLETE |
| 15 |
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