<html>
<meta http-equiv="Accept-CH" content="DPR, Width, Viewport-Width, Device-Memory, rtt, downlink, ect, lang">
<title>Accept-CH http-equiv cross-navigation test</title>
<body>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>

<div id=test>
    <p>Apart from this webpage, the test opens another html web page. One test
    is run in this web page, and another in the second web page.
</div>

<script>

// This test contains accept-ch http-equiv header. The user-agent should
// persist origin preferences for the client hints specified in Accept-CH
// header.

// Next, to verify that the origin preferences were persisted by the user
// agent, this test fetches resources/do_not_expect_client_hints_headers.html
// in a new window. Fetching of
// resources/do_not_expect_client_hints_headers.html verifies that the user
// agent does not send the client hints in the request headers.

// Test is marked as tentative until https://github.com/whatwg/fetch/issues/726
// is resolved.
promise_test(t => {
  return fetch("echo_client_hints_received.py").then(r => {
    assert_equals(r.status, 200)
    // Verify that the browser includes client hints in the request
    // headers when fetching echo_client_hints_received.py within this page.
    assert_true(r.headers.has("device-memory-received"), "device-memory-received");
  });
}, "Test that the browser attaches client hints on subresources in the same navigation");

// Verify that the browser does not attach client hints on resources in a
// different navigation. This verifies that the client hint preferences were
// not persisted for the origin.
window.open("resources/expect_client_hints_headers.html");
async_test(t => {
  window.addEventListener('message', t.step_func_done(e => {
    assert_equals(e.data, 'PASS');
  }));
}, "Loading of resources/expect_client_hints_headers.html did not finish.");

</script>
</body>
</html>