language-model-prompt-empty-input.tentative.https.window.js

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This test has a WPT meta file that expects 3 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /ai/language-model/language-model-prompt-empty-input.tentative.https.window.html - WPT Dashboard Interop Dashboard

// META: title=Language Model Prompt Empty Input

// 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 model = await createLanguageModel();

  // null and undefined are coerced to the strings "null" and "undefined" by the

  // IDL bindings.

  assert_regexp_match(await model.prompt(null), /null/);

  assert_regexp_match(await model.prompt(undefined), /undefined/);

  // Empty string is allowed even when context is empty.

  assert_equals(typeof await model.prompt(""), "string");

  // Empty sequence [] is allowed even when context is empty.

  assert_equals(typeof await model.prompt([]), "string");

  // Nested empty content sequence is allowed.

  assert_equals(typeof await model.prompt([{ role: 'user', content: [] }]), "string");

  // Nested structured message with empty text is allowed.

  assert_equals(typeof await model.prompt([{ role: 'user', content: [{ type: 'text', value: '' }] }]), "string");

}, "LanguageModel.prompt() allows empty or coerced inputs");

promise_test(async (t) => {

  await ensureLanguageModel();

  const model = await createLanguageModel();

  assert_equals(await model.append(null), undefined);

  assert_equals(await model.append(undefined), undefined);

  assert_equals(await model.append(""), undefined);

  assert_equals(await model.append([]), undefined);

  assert_equals(await model.append([{ role: 'user', content: [] }]), undefined);

  assert_equals(await model.append([{ role: 'user', content: [{ type: 'text', value: '' }] }]), undefined);

}, "LanguageModel.append() allows empty or coerced inputs");

promise_test(async (t) => {

  await ensureLanguageModel();

  const model = await createLanguageModel();

  assert_true(model.promptStreaming(null) instanceof ReadableStream);

  assert_true(model.promptStreaming(undefined) instanceof ReadableStream);

  assert_true(model.promptStreaming("") instanceof ReadableStream);

  assert_true(model.promptStreaming([]) instanceof ReadableStream);

  assert_true(model.promptStreaming([{ role: 'user', content: [] }]) instanceof ReadableStream);

  assert_true(model.promptStreaming([{ role: 'user', content: [{ type: 'text', value: '' }] }]) instanceof ReadableStream);

}, "LanguageModel.promptStreaming() allows empty or coerced inputs");