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<!doctype html>
<body>
<script src=/resources/testharness.js></script>
<script src=/shared-storage/resources/util.js></script>
<script>
async function init() {
// Create iframe that sets (expectedKey, expectedValue) to shared storage
// via response header.
let {expectedKey, expectedValue} = parseExpectedKeyAndValueData();
const rawWriteHeader = `set;key=${expectedKey};value=${expectedValue}`;
const writeHeader = encodeURIComponent(rawWriteHeader);
const iframeSrc =
`/shared-storage/resources/shared-storage-write-notify-parent.py` +
`?write=${writeHeader}`;
let frame = document.createElement('iframe');
frame.src = iframeSrc;
frame.sharedStorageWritable = true;
// We pass the message on to the parent/opener.
const promise = new Promise((resolve, reject) => {
window.addEventListener('message', async function handler(evt) {
if (evt.source === frame.contentWindow &&
evt.data.sharedStorageWritableHeader) {
assert_equals(evt.data.sharedStorageWritableHeader, '?1');
let parentOrOpener = window.opener || window.parent;
parentOrOpener.postMessage({sharedStorageWritableHeader:
evt.data.sharedStorageWritableHeader},
"*");
document.body.removeChild(frame);
window.removeEventListener('message', handler);
resolve();
}
});
window.addEventListener('error', () => {
reject(new Error('Navigation error'));
});
});
// Navigate and wait for notification.
document.body.appendChild(frame);
await promise;
}
init();
</script>
</body>
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