<!DOCTYPE html> <title>Test that pages and workers can send Structure Message to one another.</title> <script src="/resources/testharness.js"></script> <script src="/resources/testharnessreport.js"></script> <script> promise_test(t => { let worker; return new Promise(resolve => { worker = new Worker("support/Worker-structure-message.js"); worker.onmessage = resolve; worker.postMessage({ operation: 'find-edges', input: new ArrayBuffer(20), threshold: 0.6 }); }).then(evt => { assert_false(evt.data.startsWith('FAIL')); return new Promise(resolve => worker.onmessage = resolve); }).then(evt => { assert_equals(evt.data.operation, 'find-edges'); assert_true(ArrayBuffer.prototype.isPrototypeOf(evt.data.input)); assert_equals(evt.data.input.byteLength, 20); assert_equals(evt.data.threshold, 0.6); }); }, 'Tests sending structure message to/from worker.'); </script>