public void TestCurrencyExchange_ExchangeRateChange()
{
//arrange
CurrencyExchange exchange = new CurrencyExchange(new List <string> {
"AAA", "BBB", "CCC"
});
double expectedResult = 2.50;
//act
exchange.SpecifyExchangeRate("AAABBB", 6.50);
exchange.SpecifyExchangeRate("AAABBB", 2.50);
double actualResult = exchange.ExchangeRates["AAABBB"];
//assert
Assert.AreEqual(expectedResult, actualResult);
}
public void TestCurrencyExchange_CalculateExchangedRate_CheckAfterChange()
{
//arrange
CurrencyExchange exchange = new CurrencyExchange(new List <string> {
"AAA", "BBB", "CCC"
});
Dictionary <string, double> expectedResult = new Dictionary <string, double>();
expectedResult.Add("AAABBB", 2.50);
//act
exchange.SpecifyExchangeRate("AAABBB", 6.50);
exchange.SpecifyExchangeRate("AAABBB", 2.50);
Dictionary <string, double> actualResult = exchange.ExchangeRates;
//assert
CollectionAssert.AreEqual(expectedResult, actualResult);
}
public void TestCurrencyExchange_ExchangeRateNegativeRate_Exception()
{
//arrange
CurrencyExchange exchange = new CurrencyExchange(new List <string> {
"AAA", "BBB", "CCC"
});
//act, assert
Assert.ThrowsException <ArgumentException>(() => exchange.SpecifyExchangeRate("AAABBB", -5.50));
}
public void TestCurrencyExchange_ExchangeRateCurrencyCrossDoesNotExist_Exception()
{
//arrange
CurrencyExchange exchange = new CurrencyExchange(new List <string> {
"AAA", "BBB", "CCC"
});
//act, assert
Assert.ThrowsException <ArgumentException>(() => exchange.SpecifyExchangeRate("AAADDD", 3.45));
}
public void TestCurrencyExchange_CalculateExchangedRateAmountNotPositive_Exception()
{
//arrange
CurrencyExchange exchange = new CurrencyExchange(new List <string> {
"AAA", "BBB", "CCC"
});
//act
exchange.SpecifyExchangeRate("AAABBB", 6.50);
//assert
Assert.ThrowsException <ArgumentException>(() => exchange.CalculateExchangedRate("AAABBB", "AAA", -200));
}
public void TestCurrencyExchange_ExchangeRateMixAutomatic_NoException()
{
//arrange
CurrencyExchange exchange = new CurrencyExchange(new List <string> {
"AAA", "BBB", "CCC"
});
double expectedResult = 2.50 / 6.50;
//act
exchange.SpecifyExchangeRate("AAABBB", 2.50);
exchange.SpecifyExchangeRate("AAACCC", 6.50);
//double actualResult = exchange.ExchangeRates["BBBCCC"];
//assert
string output = "";
foreach (string s in exchange.ExchangeRates.Keys)
{
TestContext.WriteLine(s);
}
//Assert.AreEqual(expectedResult, actualResult);
}