executeTool-error-window-onerror.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/executeTool-error-window-onerror.https.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<html>

<head>

<title>WebMCP failed tool execution does not fire window.onerror</title>

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

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

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

</head>

<body>

<script>

promise_test(async t => {

  let errorFired = false;

  const errorHandler = () => {

    errorFired = true;

};

  window.addEventListener('error', errorHandler);

  t.add_cleanup(() => {

    window.removeEventListener('error', errorHandler);

});

  // Register a tool that throws an error when executed.

  await document.modelContext.registerTool({

    name: 'throwing_tool',

    description: 'A tool that throws an error',

    execute: async () => {

      throw new Error('Tool execution failed intentionally');

});

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

  const tool = tools.find(t => t.name === 'throwing_tool');

  assert_true(!!tool, 'Should find the registered tool');

  // `executeTool()` should reject since the tool execution failed.

  await promise_rejects_dom(t, 'UnknownError',

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

      'executeTool() rejects when the tool execution throws');

  assert_false(errorFired, 'window.onerror/error event should not be fired');

}, 'Failed tool execution does not trigger window.onerror');

</script>

</body>

</html>