| Checks that window.postMessage clones SharedArrayBuffers | |
| On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". | |
| PASS memory[0] is 42 | |
| PASS otherMemory[0] is 0 | |
| PASS memory[0] is 42 | |
| PASS otherMemory[0] is 43 | |
| PASS successfullyParsed is true | |
| TEST COMPLETE | |