public async Task GetExternalExchangeRates_FetchForDateWithoutEntry_One_Target_Currency_ReturnEmptyArray()
{
var request = new ExchangeRateFetchModel(currencyCodesOneTarget, DateWithoutExchangeDateEntry, DateWithoutExchangeDateEntry);
var exchangeRateProvider = new ExchangeRateApiProvider();
var result = await exchangeRateProvider.GetExternalExchangeRates(request);
Assert.Empty(result);
}
public async Task GetExternalExchangeRates_FetchFor08_05_2020_One_Target_Currency_ReturnCorrectResult()
{
var expectedExchangeDateValue = 1.084;
var testedDate = new DateTime(2020, 05, 08);
var request = new ExchangeRateFetchModel(currencyCodesOneTarget, testedDate, testedDate);
var exchangeRateProvider = new ExchangeRateApiProvider();
var result = await exchangeRateProvider.GetExternalExchangeRates(request);
Assert.True(result.Length == 1);
Assert.Equal(result[0].Value, expectedExchangeDateValue, 2);
Assert.Equal(result[0].Date, testedDate);
}
public async Task GetExternalExchangeRates_FetchFor_0708_05_2020_One_Target_Currency_ReturnCorrectResults()
{
var startDate = new DateTime(2020, 05, 07);
var endDate = new DateTime(2020, 05, 08);
var request = new ExchangeRateFetchModel(currencyCodesOneTarget, startDate, endDate);
var exchangeRateProvider = new ExchangeRateApiProvider();
var result = await exchangeRateProvider.GetExternalExchangeRates(request);
Assert.True(result.Length == 2);
Assert.Equal(result.Min(res => res.Date), startDate);
Assert.Equal(result.Max(res => res.Date), endDate);
var expectedFirstDateExchangeValue = 1.0783;
Assert.Equal(result[0].Value, expectedFirstDateExchangeValue, 2);
Assert.Equal(result[0].Date, startDate);
var expectedSecondDateExchangeValue = 1.084;
Assert.Equal(result[1].Value, expectedSecondDateExchangeValue, 2);
Assert.Equal(result[1].Date, endDate);
}
public async Task GetExternalExchangeRates_FetchFor_0708_05_2020_Two_Target_Currency_ReturnCorrectResults()
{
var startDate = new DateTime(2020, 05, 07);
var endDate = new DateTime(2020, 05, 08);
var request = new ExchangeRateFetchModel(currencyCodesForMultipleTargets, startDate, endDate);
var exchangeRateProvider = new ExchangeRateApiProvider();
var result = await exchangeRateProvider.GetExternalExchangeRates(request);
Assert.True(result.Length == 4);
Assert.Equal(result.Min(res => res.Date), startDate);
Assert.Equal(result.Max(res => res.Date), endDate);
var expectedFirstDateEURExchangeValue = 1.0783;
var firstDayEuroExchangeRate = result.Where(rate => rate.Target == "EUR").First();
Assert.Equal(firstDayEuroExchangeRate.Value, expectedFirstDateEURExchangeValue, 2);
Assert.Equal(firstDayEuroExchangeRate.Date, startDate);
var expectedSecondDateEURExchangeValue = 1.084;
var secondDayEuroExchangeRate = result.Where(rate => rate.Target == "EUR").Skip(1).First();
Assert.Equal(secondDayEuroExchangeRate.Value, expectedSecondDateEURExchangeValue, 2);
Assert.Equal(secondDayEuroExchangeRate.Date, endDate);
var expectedFirstDatePLNExchangeValue = 0.231;
var firstDayPlnExchangeRate = result.Where(rate => rate.Target == "PLN").First();
Assert.Equal(firstDayPlnExchangeRate.Value, expectedFirstDatePLNExchangeValue, 2);
Assert.Equal(firstDayPlnExchangeRate.Date, startDate);
var expectedSecondDatePLNExchangeValue = 0.23;
var secondDayPlnExchangeRate = result.Where(rate => rate.Target == "PLN").Skip(1).First();
Assert.Equal(secondDayPlnExchangeRate.Value, expectedSecondDatePLNExchangeValue, 2);
Assert.Equal(secondDayPlnExchangeRate.Date, endDate);
}
