public async Task <string> GetRates()
{
ER = new ExchangeRates();
await ER.GetRates();
string News = "";
if (ER.Rates == null)
{
return(News = "Возникли проблемы при поиске указанных новостей по запросу \"Курс валют\"");
}
else
{
News = "Доллар - " + ER.Rates[0] + Environment.NewLine + "Евро - " + ER.Rates[1];
}
return(News);
}
public void DisposeSessionTest()
{
// Arrange
var session = new Mock<ISession>();
var sessionFacotry = Mock.Of<ISessionFactory>(t => t.New() == session.Object);
var repository =
Mock.Of<IRateRepository>(
t =>
t.GetCached(session.Object, It.IsAny<Currency>(), It.IsAny<DateTime>(), It.IsAny<DateTime>()) == new Rate[0]);
var service =
Mock.Of<IRateService>(
t => t.GetRates(Currency.RUB, It.IsAny<IEnumerable<DateTime>>()) == new Rate[0]);
var exchangeRates = new ExchangeRates(sessionFacotry, repository, service);
// Act
exchangeRates.GetRates(Currency.RUB, DateTime.Today, DateTime.Today);
// Assert
session.Verify(t => t.Dispose(), Times.Once);
}
/// <summary>
/// Should return exchange rates among the specified currencies that are defined by the source. But only those defined
/// by the source, do not return calculated exchange rates. E.g. if the source contains "EUR/USD" but not "USD/EUR",
/// do not return exchange rate "USD/EUR" with value calculated as 1 / "EUR/USD". If the source does not provide
/// some of the currencies, ignore them.
/// </summary>
public IEnumerable <ExchangeRate> GetExchangeRates(IEnumerable <Currency> currencies)
{
List <ExchangeRate> toReturn = new List <ExchangeRate>();
ExchangeRates ER = new ExchangeRates("OBsfZ4UDsAa3IVBByphPgTVY");
foreach (var sourceCurr in currencies)
{
foreach (var targetCurr in currencies)
{
if (sourceCurr == targetCurr) // faster then ask to server
{
toReturn.Add(new ExchangeRate(sourceCurr, targetCurr, 1));
continue;
}
var response = ER.GetRates(sourceCurr.Code, targetCurr.Code, ExchangeRates.RatesFields.Averages);
if (response.IsSuccessful) // ignoring rates, which are not specified by source
{
decimal middlePrice = ((decimal)(response.Quotes.First().Value.Ask + response.Quotes.First().Value.Bid)) / 2; // to get average
toReturn.Add(new ExchangeRate(sourceCurr, targetCurr, middlePrice));
}
}
}
return(toReturn);
}
public static void Main(string[] args)
{
// Initializing the API
var api = new ExchangeRates("<API KEY>");
// Example of listing currencies
Console.WriteLine("\n********** Listing Currencies:");
var responseCurrencies = api.GetCurrencies();
if (responseCurrencies.IsSuccessful)
{
foreach (var currency in responseCurrencies.Currencies)
{
Console.WriteLine("{0}:{1}", currency.Code, currency.Description);
}
}
else
{
Console.WriteLine("There was an error with the request: {0}", responseCurrencies.ErrorMessage);
}
// Example of checking RemainingQuotes
var responseRemaingQuotes = api.GetRemainingQuotes();
Console.WriteLine("\n********** Remaining Quotes:");
if (responseRemaingQuotes.IsSuccessful)
{
Console.WriteLine("Remaining quotes: {0}", responseRemaingQuotes.RemainingQuotes);
}
else
{
Console.WriteLine("There was an error with the request: {0}", responseRemaingQuotes.ErrorMessage);
}
// Example of retrieving rates by specifying multiple fields.
var responseGetRatesWithFields = api.GetRates("USD",
quote: "EUR",
start: "2014-01-01",
end: "2014-01-05",
fields: new List<ExchangeRates.RatesFields> { ExchangeRates.RatesFields.Averages,
ExchangeRates.RatesFields.Midpoint });
if (responseGetRatesWithFields.IsSuccessful)
{
Console.WriteLine("\n********** Rates - Averages and Midpoints:");
foreach (var quote in responseGetRatesWithFields.Quotes)
{
Console.WriteLine("From {0} to {1}\nQuote:{2} Ask:{3,10} MidPoint:{4,10} Bid:{5,10}",
responseGetRatesWithFields.Meta.EffectiveParams.StartDate.Value.ToShortDateString(),
responseGetRatesWithFields.Meta.EffectiveParams.EndDate.Value.ToShortDateString(),
quote.Key,
quote.Value.Ask,
quote.Value.Midpoint,
quote.Value.Bid);
}
}
else
{
Console.WriteLine("There was an error with the request: {0}", responseGetRatesWithFields.ErrorMessage);
}
// Example of retrieving rates by specifying multiple quotes.
var responseGetRatesForSeveralQuotes = api.GetRates("USD",
quote: new List<string> {"EUR", "CHF"} ,
date: "2014-01-01",
fields: ExchangeRates.RatesFields.Averages);
if (responseGetRatesForSeveralQuotes.IsSuccessful)
{
Console.WriteLine("\n********** Rates for USD/EUR and USD/CHF:");
foreach (var quote in responseGetRatesForSeveralQuotes.Quotes)
{
Console.WriteLine("{0} Quote:{1} Ask:{2,10} Bid:{3,10}",
quote.Value.Date,
quote.Key,
quote.Value.Ask,
quote.Value.Bid);
}
}
else
{
Console.WriteLine("There was an error with the request: {0}", responseGetRatesWithFields.ErrorMessage);
}
Console.ReadKey();
}
public void GetRates_CacheIsEnough_Test()
{
// Arrange
var session = Mock.Of<ISession>();
var sessionFacotry = Mock.Of<ISessionFactory>(t => t.New() == session);
var rate1 = Mock.Of<Rate>(t => t.Stamp == DateTime.Today.AddDays(-1));
var rate2 = Mock.Of<Rate>(t => t.Stamp == DateTime.Today);
var repository =
Mock.Of<IRateRepository>(
t =>
t.GetCached(session, It.IsAny<Currency>(), DateTime.Today.AddDays(-1), DateTime.Today) == new[] { rate2, rate1 });
var service = new Mock<IRateService>();
var exchangeRates = new ExchangeRates(sessionFacotry, repository, service.Object);
// Act
var rates = exchangeRates.GetRates(Currency.RUB, DateTime.Today.AddDays(-1), DateTime.Today);
// Assert
Assert.AreEqual(rates.First(), rate1);
Assert.AreEqual(rates.Last(), rate2);
service.Verify(t => t.GetRates(It.IsAny<Currency>(), It.IsAny<IEnumerable<DateTime>>()), Times.Never);
}
public void GetRates_ApplicationException_Test()
{
// Arrange
var exception = new ApplicationException();
var sessionFacotry = new Mock<ISessionFactory>();
sessionFacotry.Setup(t => t.New()).Throws(exception);
var repository = Mock.Of<IRateRepository>();
var service = Mock.Of<IRateService>();
var exchangeRates = new ExchangeRates(sessionFacotry.Object, repository, service);
// Assert
var ex = Assert.Throws<ApplicationException>(() => exchangeRates.GetRates(Currency.RUB, DateTime.Today.AddDays(-1), DateTime.Today));
Assert.AreEqual(ex, exception);
}
public void GetRate_ProvideErrorMessage_WhenRepositoryGetCachedFails_Test()
{
// Arrange
var exception = Mock.Of<Exception>(t => t.Message == "Error message");
var session = Mock.Of<ISession>();
var sessionFacotry = Mock.Of<ISessionFactory>(t => t.New() == session);
var repository = new Mock<IRateRepository>();
repository.Setup(t => t.GetCached(It.IsAny<ISession>(), It.IsAny<Currency>(), It.IsAny<DateTime>(), It.IsAny<DateTime>()))
.Throws(exception);
var service =
Mock.Of<IRateService>(
t => t.GetRates(Currency.RUB, It.Is<IEnumerable<DateTime>>(e => e.Contains(DateTime.Today.AddDays(-1)) && e.Contains(DateTime.Today))) == new Rate[0]);
var exchangeRates = new ExchangeRates(sessionFacotry, repository.Object, service);
// Act
exchangeRates.GetRates(Currency.RUB, DateTime.Today.AddDays(-1), DateTime.Today);
// Assert
Assert.AreEqual(exchangeRates.ErrorMessage, "Error message");
}
public void GetRate_NotThrows_WhenRepositoryGetCachedFails_Test()
{
// Arrange
var session = Mock.Of<ISession>();
var sessionFacotry = Mock.Of<ISessionFactory>(t => t.New() == session);
var repository = new Mock<IRateRepository>();
repository.Setup(t => t.GetCached(It.IsAny<ISession>(), It.IsAny<Currency>(), It.IsAny<DateTime>(), It.IsAny<DateTime>()))
.Throws<Exception>();
var rate = Mock.Of<Rate>();
var service =
Mock.Of<IRateService>(
t => t.GetRates(Currency.RUB, It.Is<IEnumerable<DateTime>>(e => e.Contains(DateTime.Today.AddDays(-1)) && e.Contains(DateTime.Today))) == new[] { rate });
var exchangeRates = new ExchangeRates(sessionFacotry, repository.Object, service);
// Act
var rates = exchangeRates.GetRates(Currency.RUB, DateTime.Today.AddDays(-1), DateTime.Today);
// Assert
Assert.AreEqual(rates.Single(), rate);
}
public void GetRates_SelectedPeriodExceedTwoMonths_Test()
{
// Arrange
var sessionFacotry = Mock.Of<ISessionFactory>();
var repository = Mock.Of<IRateRepository>();
var service = Mock.Of<IRateService>();
var exchangeRates = new ExchangeRates(sessionFacotry, repository, service);
// Assert
Assert.Throws<SelectedPeriodExceedTwoMonthsException>(() => exchangeRates.GetRates(Currency.RUB, DateTime.Today.AddDays(-100), DateTime.Today));
}
public void GetRates_EndDateIsLaterThanToday_Test()
{
// Arrange
var sessionFacotry = Mock.Of<ISessionFactory>();
var repository = Mock.Of<IRateRepository>();
var service = Mock.Of<IRateService>();
var exchangeRates = new ExchangeRates(sessionFacotry, repository, service);
// Assert
Assert.Throws<EndDateIsLaterThanTodayException>(() => exchangeRates.GetRates(Currency.RUB, DateTime.Today, DateTime.Today.AddDays(1)));
}
public void GetRates_EmprtyCache_Test()
{
// Arrange
var session = Mock.Of<ISession>();
var sessionFacotry = Mock.Of<ISessionFactory>(t => t.New() == session);
var repository =
Mock.Of<IRateRepository>(
t =>
t.GetCached(session, It.IsAny<Currency>(), It.IsAny<DateTime>(), It.IsAny<DateTime>()) == new Rate[0]);
var rate = Mock.Of<Rate>();
var service =
Mock.Of<IRateService>(
t => t.GetRates(Currency.RUB, It.Is<IEnumerable<DateTime>>(e => e.Contains(DateTime.Today.AddDays(-1)) && e.Contains(DateTime.Today))) == new[] { rate });
var exchangeRates = new ExchangeRates(sessionFacotry, repository, service);
// Act
var rates = exchangeRates.GetRates(Currency.RUB, DateTime.Today.AddDays(-1), DateTime.Today);
// Assert
Assert.AreEqual(rates.Single(), rate);
}
public void GetRates_EmprtyCache_CacheRates_Test()
{
// Arrange
var session = Mock.Of<ISession>();
var sessionFacotry = Mock.Of<ISessionFactory>(t => t.New() == session);
var repository =
new Mock<IRateRepository>();
repository.Setup(t => t.GetCached(session, It.IsAny<Currency>(), It.IsAny<DateTime>(), It.IsAny<DateTime>())).Returns(new Rate[0]);
var rate = Mock.Of<Rate>();
var service =
Mock.Of<IRateService>(
t => t.GetRates(Currency.RUB, It.Is<IEnumerable<DateTime>>(e => e.Contains(DateTime.Today.AddDays(-1)) && e.Contains(DateTime.Today))) == new[] { rate });
var exchangeRates = new ExchangeRates(sessionFacotry, repository.Object, service);
// Act
exchangeRates.GetRates(Currency.RUB, DateTime.Today.AddDays(-1), DateTime.Today);
// Assert
repository.Verify(t => t.Cache(session, It.Is<IEnumerable<Rate>>(e => e.Single() == rate)));
}
public void GetRates_CacheNotEnough_Test()
{
// Arrange
var session = Mock.Of<ISession>();
var sessionFacotry = Mock.Of<ISessionFactory>(t => t.New() == session);
var rate1 = Mock.Of<Rate>(t => t.Stamp == DateTime.Today.AddDays(-2));
var rate2 = Mock.Of<Rate>(t => t.Stamp == DateTime.Today.AddDays(-1));
var rate3 = Mock.Of<Rate>(t => t.Stamp == DateTime.Today);
var repository =
Mock.Of<IRateRepository>(
t =>
t.GetCached(session, It.IsAny<Currency>(), DateTime.Today.AddDays(-2), DateTime.Today) == new[] { rate1, rate3 });
var service = Mock.Of<IRateService>(t => t.GetRates(Currency.RUB, It.Is<IEnumerable<DateTime>>(e => e.Single() == DateTime.Today.AddDays(-1))) == new[] { rate2});
var exchangeRates = new ExchangeRates(sessionFacotry, repository, service);
// Act
var rates = exchangeRates.GetRates(Currency.RUB, DateTime.Today.AddDays(-2), DateTime.Today);
// Assert
Assert.AreEqual(rates[0], rate1);
Assert.AreEqual(rates[1], rate2);
Assert.AreEqual(rates[2], rate3);
}
public static void Main(string[] args)
{
// Initializing the API
var api = new ExchangeRates("<API KEY>");
// Example of listing currencies
Console.WriteLine("\n********** Listing Currencies:");
var responseCurrencies = api.GetCurrencies();
if (responseCurrencies.IsSuccessful)
{
foreach (var currency in responseCurrencies.Currencies)
{
Console.WriteLine("{0}:{1}", currency.Code, currency.Description);
}
}
else
{
Console.WriteLine("There was an error with the request: {0}", responseCurrencies.ErrorMessage);
}
// Example of checking RemainingQuotes
var responseRemaingQuotes = api.GetRemainingQuotes();
Console.WriteLine("\n********** Remaining Quotes:");
if (responseRemaingQuotes.IsSuccessful)
{
Console.WriteLine("Remaining quotes: {0}", responseRemaingQuotes.RemainingQuotes);
}
else
{
Console.WriteLine("There was an error with the request: {0}", responseRemaingQuotes.ErrorMessage);
}
// Example of retrieving rates by specifying multiple fields.
var responseGetRatesWithFields = api.GetRates("USD",
quote: "EUR",
start: "2014-01-01",
end: "2014-01-05",
fields: new List <ExchangeRates.RatesFields> {
ExchangeRates.RatesFields.Averages,
ExchangeRates.RatesFields.Midpoint
});
if (responseGetRatesWithFields.IsSuccessful)
{
Console.WriteLine("\n********** Rates - Averages and Midpoints:");
foreach (var quote in responseGetRatesWithFields.Quotes)
{
Console.WriteLine("From {0} to {1}\nQuote:{2} Ask:{3,10} MidPoint:{4,10} Bid:{5,10}",
responseGetRatesWithFields.Meta.EffectiveParams.StartDate.Value.ToShortDateString(),
responseGetRatesWithFields.Meta.EffectiveParams.EndDate.Value.ToShortDateString(),
quote.Key,
quote.Value.Ask,
quote.Value.Midpoint,
quote.Value.Bid);
}
}
else
{
Console.WriteLine("There was an error with the request: {0}", responseGetRatesWithFields.ErrorMessage);
}
// Example of retrieving rates by specifying multiple quotes.
var responseGetRatesForSeveralQuotes = api.GetRates("USD",
quote: new List <string> {
"EUR", "CHF"
},
date: "2014-01-01",
fields: ExchangeRates.RatesFields.Averages);
if (responseGetRatesForSeveralQuotes.IsSuccessful)
{
Console.WriteLine("\n********** Rates for USD/EUR and USD/CHF:");
foreach (var quote in responseGetRatesForSeveralQuotes.Quotes)
{
Console.WriteLine("{0} Quote:{1} Ask:{2,10} Bid:{3,10}",
quote.Value.Date,
quote.Key,
quote.Value.Ask,
quote.Value.Bid);
}
}
else
{
Console.WriteLine("There was an error with the request: {0}", responseGetRatesWithFields.ErrorMessage);
}
Console.ReadKey();
}