public void testAddPersona() {
    Persona persona = PersonaTest.crearPersonaLatLngVariable();
    Personas lista = new Personas();
    lista.addPersona(persona);

    assertEquals(1, lista.size());
  }
  public void testIterator() {
    Personas lista = new Personas();
    Persona persona1 = PersonaTest.crearPersonaLatLngVariable();
    Persona persona2 = PersonaTest.crearPersonaLatLngVariable();
    Persona persona3 = PersonaTest.crearPersonaLatLngVariable();
    lista.addPersona(persona1);
    lista.addPersona(persona2);
    lista.addPersona(persona3);

    Iterator<Persona> it = lista.iterator();

    assertEquals(3, lista.size());
    assertEquals(persona1, it.next());
    assertEquals(persona2, it.next());
    assertEquals(persona3, it.next());
  }