public void MapModelsReturnsSuccessForValidDataModelsWithoutLegacyRegions()
{
// Arrange
var appRegistrationModel = ModelBuilders.ValidAppRegistrationModel(ModelBuilders.PathName);
var legacyPathModel = ModelBuilders.ValidLegacyPathModel(ModelBuilders.PathName);
IList <LegacyRegionModel>?legacyRegionModels = null;
var validRegionModels = ModelBuilders.ValidRegionModels();
A.CallTo(() => fakeMapper.Map(legacyPathModel, appRegistrationModel));
A.CallTo(() => fakeMapper.Map <List <RegionModel> >(legacyRegionModels)).Returns(validRegionModels);
// Act
modelMappingService.MapModels(appRegistrationModel, legacyPathModel, legacyRegionModels);
// assert
A.CallTo(() => fakeMapper.Map(legacyPathModel, appRegistrationModel)).MustHaveHappenedOnceExactly();
A.CallTo(() => fakeMapper.Map <List <RegionModel> >(legacyRegionModels)).MustNotHaveHappened();
Assert.Null(appRegistrationModel.Regions);
}