public async Task GetAllCountriesAsyncTest_Correct_ShouldReturnAllCountries()
{
var context = SteuDbContextInMemoryFactory.InitializeContext();
await this.SeedData(context);
MapperInitializer.InitializeMapper();
var repository = new EfRepository <Country>(context);
var service = new CountriesService(repository);
var actualResult = await service.GetAllCountriesAsync <AllCountiresEditLoadViewModel>();
Assert.Equal(3, actualResult.Count);
}