public void SiteOfTreatmentSet_HasNoValidationError()
        {
            var facilityCollection = new FacilityCollection
            {
                Facilities = new List <Facility>()
                {
                    new Facility(AnyGuid)
                    {
                        IsActualSite = true
                    },
                    new Facility(AnyGuid)
                    {
                        IsActualSite = false
                    }
                }
            };

            validator.ShouldNotHaveValidationErrorFor(x => x.Facilities, facilityCollection);
        }