exposedTo-window-open.https.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /webmcp/imperative/exposedTo-window-open.https.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<html>

<head>

<title>WebMCP Exposure Across window.open()</title>

<meta name="timeout" content="long">

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

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

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

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

</head>

<body>

<script>

const host_info = get_host_info();

promise_test(async t => {

  const origin_a = host_info.HTTPS_ORIGIN;

  const origin_b = host_info.HTTPS_REMOTE_ORIGIN;

  // Frame B exposes to A. Parent A can view, but opened window cannot.

  const iframe_b = document.createElement('iframe');

  iframe_b.src = origin_b + '/webmcp/imperative/resources/iframe-register-tool.html';

  iframe_b.allow = 'tools *';

  const load_promise = new Promise(resolve => iframe_b.onload = resolve);

  document.body.appendChild(iframe_b);

  t.add_cleanup(() => iframe_b.remove());

  await load_promise;

  iframe_b.contentWindow.postMessage({

    action: 'register',

    tool: {

      name: 'tool_b_to_a',

      description: 'Tool B exposed to A',

},

    options: { exposedTo: [origin_a] }

  }, '*');

  await new Promise(resolve => {

    navigator.modelContext.addEventListener('toolchange', resolve, { once: true });

});

  // Parent A can view it.

  const tools = await navigator.modelContext.getTools();

  assert_true(tools.some(t => t.name === 'tool_b_to_a'), 'Parent A should see tool_b_to_a');

  // Open new window.

  const opened_window = window.open('about:blank');

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

  // Newly opened window does not see the tool.

  const opened_tools = await opened_window.navigator.modelContext.getTools();

  assert_array_equals(opened_tools, [], "window.open()'d sees no tools");

}, 'Tools are scoped to a frame tree, and are not exposed across opener boundaries.');

</script>

</body>

</html>