abort-signal-after-iframe-removal-crash.https.html

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This WPT test may be referenced by the following Test IDs:
- /webmcp/imperative/abort-signal-after-iframe-removal-crash.https.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<html class="test-wait">

<meta charset="utf-8">

<title>WebMCP: Aborting a tool's signal after its registering iframe is removed</title>

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

<body>

<script>

// An imperative tool is unregistered when the `AbortSignal` passed to

// `registerTool()` is aborted. This must not crash even if the signal is

// aborted after the registering document has become inactive (here, because its

// iframe was removed).

//

// See https://crbug.com/573454028.

window.onload = async () => {

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

  const loaded = new Promise(resolve => iframe.onload = resolve);

  document.body.append(iframe);

  await loaded;

  // Register a tool in the iframe's document, with a signal that this document

  // can still abort after the iframe is removed.

  const controller = new AbortController();

  await iframe.contentDocument.modelContext.registerTool({

    name: 'iframe_tool',

    description: 'A tool registered by an iframe that gets removed',

    execute: async () => 'unused',

  }, {signal: controller.signal});

  iframe.remove();

  controller.abort();

  document.documentElement.classList.remove('test-wait');

};

</script>

</body>

</html>