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Test Info:

<!DOCTYPE html>
<title>Databases on different origins use separate locking</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/get-host-info.sub.js"></script>
<script src="resources/support.js"></script>
<script src="resources/support-promises.js"></script>
var host_info = get_host_info();
promise_test(async testCase => {
await deleteAllDatabases(testCase);
// Create an iframe to open and hold a database on a different origin.
var iframe = document.createElement('iframe');
var newLocation = window.location.href.replace('www', 'www2');
const keepalive_watcher = new EventWatcher(testCase, window, 'message');
iframe.src = host_info.HTTP_REMOTE_ORIGIN +
// Wait until the iframe starts its transaction.
var event = await keepalive_watcher.wait_for('message');
// Create our own database with the same name, and perform a simple get.
const db = await createNamedDatabase(
testCase, 'db-isolation-test', database => {
const tx = db.transaction('s', 'readonly', {durability: 'relaxed'});
var request = tx.objectStore('s').get(0);
request.onsuccess = testCase.step_func_done();
request.onerror = testCase.unreached_func("There should be no errors.");
}, "Test to make sure that origins have separate locking schemes");
<div id="log"></div>