PressHandler.spec.js

import assert from 'assert';
import { PressHandler } from './PressHandler';

describe('utils:PressHandler', () => {
  it('should wait at least X ms before exec', (done) => {
    const handler = new PressHandler(100);

    const start = new Date().getTime();

    handler.down();
    handler.up(() => {
      const elapsed = new Date().getTime() - start;
      assert.ok(elapsed >= 100);
      done();
    });
  });

  it('should exec immediately if X ms already elapsed', (done) => {
    const handler = new PressHandler(100);

    handler.down();

    setTimeout(() => {
      const start = new Date().getTime();
      handler.up(() => {
        const elapsed = new Date().getTime() - start;
        assert.ok(elapsed < 5);
        done();
      });
    }, 200);
  });
});