// META: title=Language Model Destroy
// META: script=/resources/testdriver.js
// META: script=../resources/util.js
// META: timeout=long

'use strict';

promise_test(async t => {
  await ensureLanguageModel();

  // Start a new session.
  const session = await createLanguageModel();

  // Calling `session.destroy()` immediately after `session.prompt()` will
  // trigger the "The model execution session has been destroyed." exception.
  let result = session.prompt(kTestPrompt);
  session.destroy();
  await promise_rejects_dom(
    t, "InvalidStateError", result,
    "The model execution session has been destroyed."
  );

  // Calling `session.prompt()` after `session.destroy()` will trigger the
  // "The model execution session has been destroyed." exception.
  await promise_rejects_dom(
    t, "InvalidStateError", session.prompt(kTestPrompt),
    "The model execution session has been destroyed."
  );

  // After destroying the session, the properties should be still accessible.
  assert_equals(
    typeof session.inputQuota, "number",
    "inputQuota must be accessible."
  );
  assert_equals(
    typeof session.inputUsage, "number",
    "inputUsage must be accessible."
  );
  assert_equals(
    typeof session.temperature, "number",
    "temperature must be accessible."
  );
  assert_equals(
    typeof session.topK, "number",
    "topK must be accessible."
  );
});