public void AddCity_When_city_Then_SaveChanges_of_UnitOfWork_called()
{
// Arrange
var city1 = new CityName {
Id = 1, Name = "City1"
};
var city2 = new CityName {
Id = 2, Name = "City2"
};
var cityRepository = A.Fake <IRepository <CityName> >();
A.CallTo(() => cityRepository.Query()).Returns(new[] { city1 }.AsQueryable());
var unitOfWork = A.Fake <IUnitOfWork>();
A.CallTo(() => unitOfWork.Repository <CityName>()).Returns(cityRepository);
var unitOfWorkFactory = A.Fake <IUnitOfWorkFactory>();
A.CallTo(() => unitOfWorkFactory.Create()).Returns(unitOfWork);
var service = new WeatherService(unitOfWorkFactory);
// Act
service.AddCity(city2);
// Assert
A.CallTo(() => unitOfWork.SaveChanges()).MustHaveHappened(Repeated.Exactly.Once);
}
