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// META: title=data URL shared worker in data URL context
// META: script=/service-workers/service-worker/resources/test-helpers.sub.js
const mimeType = 'application/javascript';
// Tests creating a data URL shared worker in a data URL iframe.
promise_test(async t => {
const nestedWorkerScriptURL =
new URL('/workers/support/post-message-on-load-worker.js', location.href);
// This code will be executed in a data URL iframe. The iframe tries to create
// a shared worker from |nestedWorkerScriptURL|, but that should result in a
// failure. This is because the data URL iframe has an opaque origin, and
// script fetch is handled as a cross-origin request.
const frameCode = `
<script>
try {
const worker = new SharedWorker('${nestedWorkerScriptURL}');
worker.port.onmessage = e => {
window.parent.postMessage(
'SharedWorker construction unexpectedly succeeded', '*');
};
worker.onerror = e => window.parent.postMessage('PASS', '*');
} catch (e) {
// Cross-origin request should asynchronously fail during worker script
// fetch because its request mode is 'same-origin'.
window.parent.postMessage(
'SharedWorker construction unexpectedly synchronously failed', '*');
}
</script>
`;
const frame = await with_iframe(`data:text/html;base64,${btoa(frameCode)}`);
const result = await new Promise(r => window.onmessage = e => r(e.data));
assert_equals(result, 'PASS');
}, 'Create a shared worker in a data url frame');
// Tests creating a data URL shared worker in a data URL iframe.
promise_test(async t => {
const workerCode = `onconnect = e => e.ports[0].postMessage("PASS");`;
// This code will be executed in a data URL iframe. The iframe tries to create
// a data URL shared worker. Fetching a data URL from the data URL shared
// worker is allowed, so the worker construction should succeed. The worker
// posts the result to the parent frame.
const frameCode = `
<script>
try {
const worker = new SharedWorker('data:${mimeType},${workerCode};');
worker.port.onmessage = e => window.parent.postMessage(e.data, '*');
worker.onerror = e => {
window.parent.postMessage('FAIL: ' + e.message, '*');
};
} catch (e) {
window.parent.postMessage(
'SharedWorker construction unexpectedly synchronously failed', '*');
}
</script>
`;
const frame = await with_iframe(`data:text/html;base64,${btoa(frameCode)}`);
const result = await new Promise(r => window.onmessage = e => r(e.data));
assert_equals(result, 'PASS');
}, 'Create a data url shared worker in a data url frame');
|
