csp-fail.https.window.js

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This WPT test may be referenced by the following Test IDs:
- /webtransport/csp-fail.https.window.html - WPT Dashboard Interop Dashboard

// META: global=window,worker

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

// META: script=resources/webtransport-test-helpers.sub.js

function set_csp(destination) {

  let meta = document.createElement('meta');

  meta.httpEquiv = 'Content-Security-Policy';

  meta.content = `connect-src ${destination}`;

  return meta;

promise_test(async t => {

  let meta = set_csp("'none'");

  document.head.appendChild(meta);

  let wt = new WebTransport(webtransport_url('custom-response.py?:status=200'));

  // Sadly we cannot use promise_rejects_dom as the error constructor is

  // WebTransportError rather than DOMException.

  const e = await wt.ready.catch(e => e);

  await promise_rejects_exactly(t, e, wt.ready, 'ready promise should be rejected');

  await promise_rejects_exactly(t, e, wt.closed, 'closed promise should be rejected');

  assert_equals(e.name, 'WebTransportError', 'WebTransportError');

  assert_true(e instanceof WebTransportError);

  assert_equals(e.source, 'session', 'source');

  assert_equals(e.streamErrorCode, null, 'streamErrorCode');

}, 'WebTransport connection should fail when CSP connect-src is set to none and reject the promises');