prefetch-document.html

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This test has a WPT meta file that expects 2 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /preload/prefetch-document.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>Ensures that prefetch works with documents</title>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script src="/common/utils.js"></script>

<script src="/common/get-host-info.sub.js"></script>

<script src="/common/dispatcher/dispatcher.js"></script>

<script src="resources/prefetch-helper.js"></script>

<body>

<script>

const {ORIGIN, REMOTE_ORIGIN, HTTP_NOTSAMESITE_ORIGIN} = get_host_info();

async function prefetch_document_and_count_fetches(options, t) {

    const {href, uid} = await prefetch({

        file: "prefetch-exec.html",

        type: "text/html",

        corssOrigin: "anonymous",

        ...options});

    const popup = window.open(href);

    const remoteContext = new RemoteContext(uid);

    t.add_cleanup(() => popup.close());

    const result = await remoteContext.execute_script(() => "OK");

    assert_equals(result, "OK");

    const requests = await get_prefetch_info(href);

    return requests.length;

promise_test(async t => {

    assert_equals(await prefetch_document_and_count_fetches({origin: ORIGIN}, t), 1);

}, "same origin document prefetch without 'as' should be consumed");

promise_test(async t => {

    // This (pre-)fetch will be blocked by ORB, which will prevent it from

    // being cached. Thus this prefetch is not consumed.

    assert_equals(await prefetch_document_and_count_fetches({origin: REMOTE_ORIGIN}, t), 2);

}, "same-site different-origin document prefetch without 'as' should not be consumed");

promise_test(async t => {

    assert_equals(await prefetch_document_and_count_fetches({origin: HTTP_NOTSAMESITE_ORIGIN}, t), 2);

}, "different-site document prefetch without 'as' should not be consumed");

promise_test(async t => {

    assert_equals(await prefetch_document_and_count_fetches({origin: HTTP_NOTSAMESITE_ORIGIN, as: "document"}, t), 2);

}, "different-site document prefetch with 'as=document' should not be consumed");

promise_test(async t => {

    const {href, uid} = await prefetch({

        file: "prefetch-exec.html",

        type: "text/html",

        corssOrigin: "anonymous",

        origin: ORIGIN});

    const popup = window.open(href + "&cache_bust=" + token());

    const remoteContext = new RemoteContext(uid);

    t.add_cleanup(() => popup.close());

    await remoteContext.execute_script(() => "OK");

    const results = await get_prefetch_info(href);

    assert_equals(results.length, 2);

    assert_equals(results[0].headers.accept, results[1].headers.accept);

}, "Document prefetch should send the exact Accept header as navigation")

</script>

</body>