public void Test_tenSmall_ReturnNameOfTwoCurrenciesWithSmallestChangeAgainstEuro()
{
//arrange
BaseCurrency Euro = new BaseCurrency();
double[] num = { 0.70, 0.68, 0.69, 0.66, 0.69, 0.69, 0.65 };
Currency GBP = new Currency("GBP", 0.70, num);
double[] arr = { 1.41, 1.40, 1.39, 1.30, 1.39, 1.39, 1.45 };
Currency JPY = new Currency("JPY", 1.41, arr);
double[] hfn = { 310.94, 310.40, 309.78, 309.86, 310.01, 309.99, 310.45 };
Currency HUF = new Currency("HUF", 310.89, hfn);
//act
Euro.addCurr(GBP);
Euro.addCurr(JPY);
Euro.addCurr(HUF);
double bothLow = Euro.GetLow();
List<string> smallest = Euro.listSmallest();
//assert
Assert.AreEqual(2, smallest.Count);
}