public void GivenNoStocksCalculateAllShareIndexReturnZero()
{
var stocks = new List <Stock>();
IStockService stockService = new StockService(stocks);
const int expected = 0;
var actual = stockService.CalculateAllShareIndex();
Assert.AreEqual(expected, actual);
}
public void GivenAListOfStocksCalculateAllShareIndex()
{
var stocks = TestData.GetListOfEasyGeometricCalcStocks();
IStockService stockService = new StockService(stocks);
const int marketPriceOne = 100;
const int marketPriceTwo = 200;
const int stockCount = 2;
double expectedValue = marketPriceOne * marketPriceTwo;
expectedValue = Math.Pow(expectedValue, 1.0 / stockCount);
var actualValue = stockService.CalculateAllShareIndex();
Assert.AreEqual(expectedValue, actualValue);
}