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importScripts('/resources/testharness.js');
test(t => {
let handle = new MediaSource().handle;
assert_true(handle instanceof MediaSourceHandle);
assert_throws_dom('DataCloneError', function() {
postMessage(handle);
}, 'serializing handle without transfer');
}, 'MediaSourceHandle serialization without transfer must fail, tested in worker');
test(t => {
let handle = new MediaSource().handle;
assert_true(handle instanceof MediaSourceHandle);
assert_throws_dom('DataCloneError', function() {
postMessage(handle, [handle, handle]);
}, 'transferring same handle more than once in same postMessage');
}, 'Same MediaSourceHandle transferred multiple times in single postMessage must fail, tested in worker');
done();