import test from 'node:test';
import assert from 'node:assert/strict';
import { ComputerUseSession } from '../computer-use/session.js';

test('computer use requires an explicit grant and enforces its step budget', () => {
  let now = 1000;
  const session = new ComputerUseSession({ stepsMax: 2, clock: () => now });
  assert.throws(() => session.beginStep(), /inactive/);
  assert.deepEqual(session.grant({ persist: true }).restore_token_present, true);
  session.beginStep();
  session.beginStep();
  assert.throws(() => session.beginStep(), /budget/);
  assert.equal(session.status().steps_used, 2);
  session.revoke();
  assert.equal(session.status().active, false);
  now += 1;
});

test('computer use expires its wall clock grant', () => {
  let now = 0;
  const session = new ComputerUseSession({ clock: () => now });
  session.grant();
  now = 180001;
  assert.throws(() => session.beginStep(), /expired/);
  assert.equal(session.status().backend, 'none');
});