static async Task Main(string[] args)
{
// Parse exchange rates
var xchangeParser = new ExchangeRateParser();
var rates = xchangeParser.CsvToExchangeRates(
await File.ReadAllTextAsync("ExchangeRates.csv"));
// Parse products
var productParser = new ProductParser();
var products = productParser.CsvToProducts(
await File.ReadAllTextAsync("Prices.csv"));
// Look for product
var product = products.FirstOrDefault(p => p.Description == args[0]);
if (product == null)
{
Console.WriteLine("Sorry, product not found");
return;
}
var converter = new CurrencyConverter(rates);
Console.WriteLine($"{converter.Convert(product.Price, product.Currency, args[1]),0:0.00}");
}
public void Can_parse_prices_When_current_culture_is_nonUS()
{
var orignalCulture = Thread.CurrentThread.CurrentCulture;
var orignalUICulture = Thread.CurrentThread.CurrentUICulture;
try
{
var ci = new CultureInfo("cs-CZ");
Thread.CurrentThread.CurrentCulture = ci;
Thread.CurrentThread.CurrentUICulture = ci;
var data = "19 Nov 2019 #224\nCountry|Currency|Amount|Code|Rate\r\nHungary|forint|1|HUF|7.633";
var parser = new ExchangeRateParser();
var rates = parser.Parse(data, new Currency("CZK"));
Assert.AreEqual(1, rates.Length);
Assert.AreEqual(7.633M, rates[0].Value);
}
finally
{
Thread.CurrentThread.CurrentCulture = orignalCulture;
Thread.CurrentThread.CurrentUICulture = orignalUICulture;
}
}
public void Parse_DifferentHeaderFormat_IncorrectCsvFormatException()
{
var parser = new ExchangeRateParser("CZK", "cs-CZ", '\n', ';', 0, 2, 1, 0, "a;b;c");
string input = "x;y;z";
Assert.ThrowsException <IncorrectCsvFormatException>(() => parser.Parse(input));
}
public void Throws_When_header_missing()
{
var data = "19 Nov 2019 #224";
var parser = new ExchangeRateParser();
Assert.ThrowsException <ExchangeRateProviderException>(() => _ = parser.Parse(data, new Currency("CZK")));
}
public void Throws_When_unexpected_header()
{
var data = "19 Nov 2019 #224\nblabla|Currency|blabla|Code|Rate\r\nHungary|forint|100|HUF|7.633";
var parser = new ExchangeRateParser();
Assert.ThrowsException <ExchangeRateProviderException>(() => _ = parser.Parse(data, new Currency("CZK")));
}
public void Throws_When_not_enough_exchange_rate_values()
{
var data = "19 Nov 2019 #224\nblabla|Currency|blabla|Code|Rate\r\nHungary|HUF|7.633";
var parser = new ExchangeRateParser();
Assert.ThrowsException <ExchangeRateProviderException>(() => _ = parser.Parse(data, new Currency("CZK")));
}
public void Throws_When_empty_data()
{
var data = "";
var parser = new ExchangeRateParser();
Assert.ThrowsException <ExchangeRateProviderException>(() => _ = parser.Parse(data, new Currency("CZK")));
}
public void Recognizes_both_line_endings()
{
var data = "19 Nov 2019 #224\nCountry|Currency|Amount|Code|Rate\r\nHungary|forint|100|HUF|7.633";
var parser = new ExchangeRateParser();
var rates = parser.Parse(data, new Currency("CZK"));
Assert.AreEqual(1, rates.Length);
}
public void Parse_SingleCurrency_CorrectCurrencyRate()
{
var parser = new ExchangeRateParser("CZK", "cs-CZ", '\n', ';', 0, 2, 1, 0, "a;b;c");
string input = "a;b;c\n" +
"USD;1;23,05;";
var result = parser.Parse(input);
var expected = new ExchangeRate(new Currency("CZK"), new Currency("USD"), 23.05m);
Assert.AreEqual(expected.ToString(), result.Single().ToString());
}
public void Parses_exchange_rate_with_amount_other_than_1()
{
var data = @"19 Nov 2019 #224
Country|Currency|Amount|Code|Rate
Hungary|forint|100|HUF|7.633
";
var parser = new ExchangeRateParser();
var rates = parser.Parse(data, new Currency("CZK"));
Assert.AreEqual(1, rates.Length);
Assert.AreEqual(0.07633M, rates[0].Value);
}
public void Parses_correct_multiple_exchange_rates()
{
var data = @"19 Nov 2019 #224
Country|Currency|Amount|Code|Rate
Australia|dollar|1|AUD|15.748
Brazil|real|1|BRL|5.503
";
var parser = new ExchangeRateParser();
var rates = parser.Parse(data, new Currency("CZK"));
Assert.AreEqual(2, rates.Length);
Assert.AreEqual("CZK", rates[0].TargetCurrency.Code);
Assert.AreEqual("AUD", rates[0].SourceCurrency.Code);
Assert.AreEqual(15.748M, rates[0].Value);
Assert.AreEqual("CZK", rates[1].TargetCurrency.Code);
Assert.AreEqual("BRL", rates[1].SourceCurrency.Code);
Assert.AreEqual(5.503M, rates[1].Value);
}
