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Test Info: Warnings

// META: script=/resources/testdriver.js
// META: script=/resources/testdriver-vendor.js
'use strict';
// Here's the set-up for this test:
// Step 1 (top-frame) Set up listener for "HasAccess" message and set data for window_event if so.
// Step 2 (top-frame) Add data to first-party session storage and set up listener for handle_event.
// Step 3 (top-frame) Embed an iframe that's cross-site with top-frame.
// Step 4 (sub-frame) Try to use storage access API and read first-party data.
// Step 5 (sub-frame) Embed an iframe that's same-origin with top-frame.
// Step 6 (sub-sub-frame) Try to use storage access API and read first-party data.
// Step 7 (sub-sub-frame) Send "HasAccess for sessionStorage" message to top-frame.
// Step 8 (top-frame) Expect new data to be set and properly trigger listener.
async_test(t => {
// Step 1
window.addEventListener("message", t.step_func(e => {
if (e.data.type != "result") {
return;
}
assert_equals(e.data.message, "HasAccess for sessionStorage", "Storage Access API should be accessible and return first-party data");
window.sessionStorage.setItem("window_event", id);
}));
// Step 2
const id = String(Date.now());
window.sessionStorage.setItem("test", id);
window.addEventListener("storage", t.step_func(e => {
if (e.key == "handle_event") {
// Step 8
assert_equals(e.newValue, id);
assert_equals(e.storageArea, window.sessionStorage);
window.sessionStorage.clear();
t.done();
}
}));
// Step 3
let iframe = document.createElement("iframe");
document.body.appendChild(iframe);
}, "Verify StorageAccessAPIBeyondCookies for Session Storage");