prefetch-headers.https.html

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This WPT test may be referenced by the following Test IDs:
- /preload/prefetch-headers.https.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>Ensures that prefetch sends headers as per-spec</title>

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

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

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

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

<body>

<script>

promise_test(async t => {

    const {href} = await prefetch({"type": "image/png", file: "green.png"}, t);

    const [info] = await get_prefetch_info(href);

    const {headers} = info;

    assert_equals(headers["sec-fetch-dest"], "empty");

    assert_equals(headers["sec-purpose"], "prefetch");

    assert_false("origin" in headers);

}, "Prefetch should include Sec-Purpose=prefetch and Sec-Fetch-Dest=empty headers");

promise_test(async t => {

    const {href} = await prefetch({"type": "image/png", file: "green.png"}, t);

    const [info] = await get_prefetch_info(href);

    const {headers} = info;

    assert_false("purpose" in headers);

    assert_false("x-moz" in headers);

}, "Prefetch should not include proprietary headers (X-moz/Purpose)");

promise_test(async t => {

    const {href} = await prefetch({"type": "image/png", file: "green.png", crossOrigin: "anonymous"}, t);

    const [info] = await get_prefetch_info(href);

    const {headers} = info;

    assert_equals(headers["origin"], document.origin);

}, "Prefetch should respect CORS mode");

</script>

</body>