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Test Info: Warnings
- 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/javascript-url-document-replacement.https.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<meta charset="utf-8">
<title>WebMCP: tools after a javascript: URL replaces a document</title>
<link rel="author" href="mailto:khushalsagar@chromium.org">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body>
<script>
// The result of a javascript: URL replaces the iframe's document with a new
// one. That new document registers its own tool and tells the parent.
const kReplacementDocument = `<!DOCTYPE html><script>
document.modelContext.registerTool({
name: 'replacement_tool',
description: 'Tool registered by the replacement document',
execute: async () => {},
}).then(() => parent.postMessage('registered', '*'),
e => parent.postMessage(String(e), '*'));
<\/script>`;
async function toolNames() {
const tools = await document.modelContext.getTools();
return tools.map(t => t.name);
}
promise_test(async t => {
const iframe = document.createElement('iframe');
iframe.src = '/common/blank.html';
const loaded = new Promise(resolve => iframe.onload = resolve);
document.body.append(iframe);
t.add_cleanup(() => iframe.remove());
await loaded;
await iframe.contentDocument.modelContext.registerTool({
name: 'replaced_tool',
description: 'Tool registered by the replaced document',
execute: async () => {},
});
assert_array_equals(await toolNames(), ['replaced_tool']);
const message = new Promise(resolve => {
window.addEventListener('message', e => resolve(e.data), {once: true});
});
iframe.contentWindow.location.href =
'javascript:' + encodeURIComponent(JSON.stringify(kReplacementDocument));
assert_equals(await message, 'registered');
assert_array_equals(await toolNames(), ['replacement_tool']);
}, 'A document that replaces another via a javascript: URL can register tools');
</script>
</body>