execute_tool_submit_from_js.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/declarative/execute_tool_submit_from_js.https.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset="utf-8">

<link rel="author" href="mailto:masonf@chromium.org">

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

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

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

<form toolname="submit_test" tooldescription="Submit test form" target="hidden_iframe" action="about:blank" toolautosubmit>

</form>

<iframe name="hidden_iframe" style="display:none"></iframe>

<script>

promise_test(async t => {

  const tool = await waitForTool('submit_test');

  assert_true(!!tool, 'Tool should be registered');

  let form = document.querySelector('form');

  let submitFired = false;

  form.addEventListener('submit', (e) => {

    submitFired = true;

    e.preventDefault();

    form.submit();

});

  // Call executeTool. If it throws, the test fails automatically.

  await document.modelContext.executeTool(tool, '{}');

  assert_true(submitFired, 'submit event should have fired');

}, 'executeTool resolves successfully when submit handler calls form.submit()');

</script>