html/capability-delegation/delegation-sender-checks.tentative.html

!DOCTYPE html>
<!--
   Tentative due to:
     https://github.com/WICG/capability-delegation
-->
<title>Capability Delegation sender checks</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-actions.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script src="resources/utils.js"></script>

<div>
  Verifies that capability delegation related error checks in <a
  href="https://wicg.github.io/capability-delegation/spec.html#monkey-patch-to-html-initiating-delegation">HTML
  postMessage algorithm</a> are enforced correctly.
</div>

<iframe width="300px" height="50px"></iframe>

<script>
  const frame = frames[0];
  const message = "any_message";
  const activate = false;

  let capability_to_delegate;

  promise_setup(async () => {
      capability_to_delegate = await findOneCapabilitySupportingDelegation();
      assert_true(!!capability_to_delegate, "The user agent supports delegating at least one capability");
  });

  promise_test(async () => {
      try {
          await postCapabilityDelegationMessage(frame, message, "/", "blah", activate);
          assert_unreached();
      } catch (exception) {
          assert_equals(exception.name, "NotSupportedError");
      }
  }, "Delegating an unsupported capability throws an exception");

  promise_test(async () => {
      try {
          await postCapabilityDelegationMessage(frame, message, "*", capability_to_delegate, activate);
          assert_unreached();
      } catch (exception) {
          assert_equals(exception.name, "NotAllowedError");
      }
  }, "Delegating to targetOrigin='*' throws an exception");

  promise_test(async () => {
      try {
          await postCapabilityDelegationMessage(frame, message, "/", capability_to_delegate, activate);
          assert_unreached();
      } catch (exception) {
          assert_equals(exception.name, "NotAllowedError");
      }
  }, "Delegating without user activation throws an exception");
</script>