text: import WorkerInterface from '../../src/interfaces/WorkerInterface';
  
  describe('The property of WorkerInterface', () => {
    const workerInterface = new WorkerInterface();
    
    describe('the two instances', () => {
      const anotherWorkerInterface = new WorkerInterface();
  
      it('must be the same', () => {
        expect(workerInterface === anotherWorkerInterface).toBe(true);
      }); 
    });
  })