date.tentative.https.window.js

Enable keyboard shortcuts

This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /ai/language-model/response-constraint/regex/date.tentative.https.window.html - WPT Dashboard Interop Dashboard

// META: title=Language Model Response Regex - Date

// META: script=/resources/testdriver.js

// META: script=/resources/testdriver-vendor.js

// META: script=../../../resources/util.js

// META: timeout=long

'use strict';

promise_test(async t => {

  await ensureLanguageModel();

  const session = await createLanguageModel();

  const regex = /^\d{4}-\d{2}-\d{2}$/;

  const response = await session.prompt(

      'Extract the date as YYYY-MM-DD from "Last edited on June 15 2026."',

      {responseConstraint: regex});

  assert_true(typeof response === 'string');

  assert_true(regex.test(response),

              `Response "${response}" should match regex ${regex}`);

}, 'Prompt should work with a date regex constraint.');