public void GivenMarketPriceIsZeroCalculateDividendYieldForCommonStockReturnNull()
{
var stock = TestData.GetTestCommonStock();
var stockManager = new StockService();
const double marketPrice = 0.0;
double? expected = null;
var actual = stockManager.CalculateDividendYield(stock, marketPrice);
Assert.AreEqual(expected, actual);
}
public void GivenMarketPriceCalculateDividendYieldForCommonStock()
{
var stock = TestData.GetTestCommonStock();
var stockManager = new StockService();
const double marketPrice = 100;
const double lastDividend = 2;
const double expectedValue = lastDividend / marketPrice;
var actualValue = stockManager.CalculateDividendYield(stock, marketPrice);
Assert.AreEqual(expectedValue, actualValue);
}
public void GivenMarketPriceCalculateDividendYieldForPreferredStock()
{
var stockManager = new StockService();
var stock = TestData.GetTestPreferredStock();
const double marketPrice = 821;
const double fixedDividend = 0.03;
const double parValue = 100;
const double expectedValue = (fixedDividend * parValue) / marketPrice;
var actualValue = stockManager.CalculateDividendYield(stock, marketPrice);
Assert.AreEqual(expectedValue, actualValue);
}