public async Task <List <CountryAggregateModel> > GetCountriesAggregatedData()
{
try
{
var dataSourceOneDataRaw = await dbManager.GetCountriesAndPopulation();
if (dataSourceOneDataRaw == null)
{
throw new InvalidOperationException("An error occured while getting data from data source one.\n");
}
var dataSourceTwoDataRaw = await statService.GetCountryPopulationsAsync();
if (dataSourceTwoDataRaw == null)
{
throw new InvalidOperationException("An error occured while getting data from data source two.\n");
}
var datasourceOneData = dataSourceOneDataRaw
.Select(c => new CountryAggregateModel()
{
Name = countryNameMappingService.MapCountryNameToIso3166(c.Country.CountryName),
Population = c.Population
});
var datasourceTwoData = dataSourceTwoDataRaw
.Select((Tuple <string, int> c) =>
{
var name = countryNameMappingService.MapCountryNameToIso3166(c.Item1);
var population = c.Item2;
return(new CountryAggregateModel()
{
Name = name,
Population = population
});
})
.ToList();
return(datasourceOneData
.Union(datasourceTwoData)
.Select(c => new CountryAggregateModel()
{
Name = c.Name, Population = c.Population
})
.OrderBy(c => c.Name)
.ToList());
}
catch (InvalidOperationException)
{
throw;
}
}
public async Task ShouldExecuteQuery()
{
var countries = await dbManager.GetCountriesAndPopulation();
Assert.IsNotEmpty(countries);
}