**Component:**

  ngOnInit(){

    this.globalFunctions.resulTest.subscribe(
      (value) => {

        this.test = value;

      });

  }

**Service:**

  public resulTest = new Subject<any>();

  sendResult(result) {
    this.resulTest.next(result);
  }


**specFile:**
it('should test if the subsriber is active', () => {
    spyOn(globalFunctions, 'sendResult');
    spyOn(globalFunctions.resulTest, 'next');


    globalFunctions.sendResult('Test');


    expect(globalFunctions.sendResult).toHaveBeenCalled();
    expect(globalFunctions.resulTest.next).toHaveBeenCalled();
    expect(component.test).toEqual('test');

  });