form_removal_submit_crash.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/form_removal_submit_crash.https.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>Form removal on submit crash test</title>

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

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

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

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

<form toolname="crash_test" tooldescription="the crashy form!" toolautosubmit target="iframe" action="about:blank">

  <input name="dummy" type="text">

</form>

<iframe name="iframe"></iframe>

<script>

promise_test(async t => {

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

  let submitFired = false;

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

    submitFired = true;

    e.preventDefault();

    e.respondWith(Promise.resolve());

    // This synchronously unregisters the tool. The previously crashy path was

    // when the internal form infrastructure relied on the form still being

    // registered as a tool immediately after the submit event is fired.

    // Specifically, we reacted to the Promise above, and the Promise reaction

    // relied on the tool registration still being valid.

//

    // See https://crbug.com/493850055.

    form.remove();

});

  const tool = await waitForTool('crash_test');

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

  // Execute the tool. This asynchronously fires the `submit` event at the form.

  // The tool execution should reject since the tool definition is updated/cancelled

  // when the form is removed from the document.

  const promise = document.modelContext.executeTool(tool, '{}');

  await promise_rejects_dom(t, "UnknownError", promise,

      "Form execution fails due to mid-execution unregistration.");

  assert_true(submitFired);

}, "Form removal on submit with respondWith does not crash the renderer");

</script>