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<!DOCTYPE html>
<meta charset="utf-8">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/helpers.js"></script>
<script>
'use strict';
promise_test(t => {
const orig = createOriginalReadableStream();
const promise = testMessageEvent(window);
postMessage(orig, '*', [orig]);
assert_true(orig.locked, 'the original stream should be locked');
return promise;
}, 'window.postMessage should be able to transfer a ReadableStream');
promise_test(t => {
const orig = createOriginalReadableStream();
const mc = new MessageChannel();
const promise = testMessageEvent(mc.port1);
mc.port1.start();
mc.port2.postMessage(orig, [orig]);
mc.port2.close();
assert_true(orig.locked, 'the original stream should be locked');
return promise;
}, 'port.postMessage should be able to transfer a ReadableStream');
promise_test(t => {
const orig = createOriginalReadableStream();
const promise = new Promise(resolve => {
addEventListener('message', t.step_func(evt => {
const [rs1, rs2] = evt.data;
assert_equals(rs1, rs2, 'both ReadableStreams should be the same object');
resolve();
}), {once: true});
});
postMessage([orig, orig], '*', [orig]);
return promise;
}, 'the same ReadableStream posted multiple times should arrive together');
const onloadPromise = new Promise(resolve => onload = resolve);
promise_test(() => {
const orig = createOriginalReadableStream();
const promise = testMessageEvent(window);
return onloadPromise.then(() => {
const echoIframe = document.querySelector('#echo');
echoIframe.contentWindow.postMessage(orig, '*', [orig]);
return promise;
});
}, 'transfer to and from an iframe should work');
</script>
<iframe id=echo src="resources/echo-iframe.html" style="display:none"></iframe>
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