sandboxed-iframe.https.window.js

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /fetch/fetch-later/quota/same-origin-iframe/sandboxed-iframe.https.window.html - WPT Dashboard Interop Dashboard

// META: script=/common/get-host-info.sub.js

// META: script=/common/utils.js

// META: script=/fetch/fetch-later/resources/fetch-later-helper.js

// META: script=/fetch/fetch-later/quota/resources/helper.js

'use strict';

const {HTTPS_ORIGIN} = get_host_info();

// Skips FormData & URLSearchParams, as browser adds extra bytes to them

// in addition to the user-provided content. It is difficult to test a

// request right at the quota limit.

// Skips File & Blob as it's difficult to estimate what additional data are

// added into them.

const dataType = BeaconDataType.String;

// Request headers are counted into total request size.

const headers = new Headers({'Content-Type': 'text/plain;charset=UTF-8'});

const requestUrl = `${HTTPS_ORIGIN}/`;

const quota = getRemainingQuota(QUOTA_PER_ORIGIN, requestUrl, headers);

const SMALL_REQUEST_BODY_SIZE = 4 * 1024;  // 4KB.

// This test validates the correct behavior for a sandboxed iframe that includes

// the 'allow-same-origin' token.

//

// Such an iframe should be treated as same-origin. Therefore, it should share

// the parent document's primary 64KB quota pool for fetchLater() requests.

//

// The test works by first having the parent document consume its entire quota.

// Then, it creates the 'allow-same-origin' sandboxed iframe and attempts to

// send a small request.

//

// The expected result is that the iframe's request is REJECTED with a

// QuotaExceededError, proving that it is correctly sharing the parent's

// (already exhausted) quota.

promise_test(async test => {

  const controller = new AbortController();

  test.add_cleanup(() => controller.abort());

  // Step 1: Exhaust the parent frame's entire fetchLater() quota.

  fetchLater(requestUrl, {

    method: 'POST',

    signal: controller.signal,

    body: makeBeaconData(generatePayload(quota), dataType),

    referrer: '',  // Referrer is part of the quota, so we control it.

});

  // Step 2: From a sandboxed 'allow-same-origin' iframe, attempt to send a

  // small request. This should fail as the shared quota is already gone.

  await loadFetchLaterIframe(

      HTTPS_ORIGIN,  // The iframe's src is same-origin.

        targetUrl: requestUrl,

        activateAfter: 0,

        method: 'POST',

        bodyType: dataType,

        bodySize: SMALL_REQUEST_BODY_SIZE,

        referrer: '',

        sandbox: 'allow-scripts allow-same-origin',

        expect: new FetchLaterIframeExpectation(

            FetchLaterExpectationType.ERROR_DOM, 'QuotaExceededError'),

});

}, `A sandboxed iframe with 'allow-same-origin' should be treated as same-origin and share the parent's quota.`);