avocado/packages/behavior/test/timing.js

import {Latus} from '@latus/core';
import {expect} from 'chai';

import {
  buildInvoke,
  buildValue,
} from '../src/builders';
import Context from '../src/context';
import compile from '../src/compilers/compile';

let latus;
let context;
beforeEach(async () => {
  latus = Latus.mock({
    '@avocado/behavior': require('../src'),
  });
  await Promise.all(latus.invokeFlat('@latus/core/starting'));
  context = new Context({}, latus);
});
describe('Timing', () => {
  it('waits', async () => {
    const DELAY = 30;
    const tickingPromise = compile(buildInvoke(
      ['Timing', 'wait'],
      [
        buildValue(300),
      ],
    ), latus)(context);
    tickingPromise.tick(200);
    let start = Date.now();
    await Promise.race([
      new Promise((resolve) => setTimeout(resolve, DELAY)),
      tickingPromise,
    ])
    expect(Date.now() - start).to.be.at.least(DELAY * 0.9);
    tickingPromise.tick(100);
    return tickingPromise;
  });
});