public void TestPreferredShareDividendYieldCalculation(double fixedDividend, int parValue, double price,
double expectedValue)
{
PreferredStock preferredStock = new PreferredStock("Test", 10, parValue, fixedDividend);
Assert.AreEqual(preferredStock.CalculateDividendYield(price), expectedValue);
}
public void TestInvalidPriceInYieldCalcThrowsException(double price)
{
CommonStock commonStock = new CommonStock("Test", 8, 100);
CommonStock preferedStock = new PreferredStock("Test", 8, 100, 0.02);
Assert.Throws <ArgumentOutOfRangeException>(() => commonStock.CalculateDividendYield(price));
Assert.Throws <ArgumentOutOfRangeException>(() => preferedStock.CalculateDividendYield(price));
}
public void AddPreferredStockTest()
{
var stockPreferred = new PreferredStock {
symbol = "GIN", lastDividend = 8, fixedDividend = 0.02, parValue = 100
};
exchangeStock.AddStock(stockPreferred);
Assert.AreEqual(stockPreferred, exchangeStock.GetStockBySymbol("GIN"));
}
public void CalculateDividendYieldForPreferredStockTest()
{
var stockPreferred = new PreferredStock {
symbol = "GIN", lastDividend = 8, fixedDividend = 0.02, parValue = 100
};
var currentDividendPreffered = exchangeStock.CalculateDividendYield(stockPreferred, 100);
var expectedDividendYield = 0.02;
Assert.AreEqual(expectedDividendYield, currentDividendPreffered);
}
public void CalculatPriceEarningsRatioForPreferredStockTest()
{
var stockPreferred = new PreferredStock {
symbol = "GIN", lastDividend = 8, fixedDividend = 0.02, parValue = 100
};
var currentPeRatio = exchangeStock.CalculatePriceEarningsRatio(stockPreferred, 100);
var expectedPeRatio = 5000;
Assert.AreEqual(expectedPeRatio, currentPeRatio);
}
public void Equals_IfStockSymbolIsNull_ReturnsFalse()
{
// Arrange
var stock1 = new CommonStock();
var stock2 = new PreferredStock();
// Act
var areEquals = stock1.Equals(stock2);
// Assert
Assert.False(areEquals);
}
public void Test_StocksPERatioException()
{
string stock = "GIN";
double lastDividend = 0;
double fixedDividend = 2;
double parValue = 100;
double stockPrice = 25;
double price = 200;
PreferredStock testStock = new PreferredStock(stock, lastDividend, fixedDividend, parValue, stockPrice);
double PEratio = testStock.PERatio(price);
}
public void Test_StocksPreferredYieldException()
{
string stock = "GIN";
double lastDividend = 8;
double fixedDividend = 2;
double parValue = 100;
double stockPrice = 25;
double price = 0;
PreferredStock testStock = new PreferredStock(stock, lastDividend, fixedDividend, parValue, stockPrice);
double dividendYield = testStock.DividendYield(price);
}
public void CalculateDividendYield_WithZeroPrice_ThrowsArgumentException()
{
// Arrange
var stock = new PreferredStock
{
FixedDividend = 0.5M,
ParValue = 100
};
// Act
var testDelegate = new TestDelegate(() => stock.CalculateDividendYield(0));
// Assert
Assert.That(testDelegate, Throws.ArgumentException);
}
public decimal CalculateDividendYield_WithNonZeroPriceAndPositiveDividend_CorrectlyCalculates(decimal price, decimal parValue)
{
// Arrange
var stock = new PreferredStock
{
FixedDividend = 0.5M,
ParValue = parValue
};
// Act
var result = stock.CalculateDividendYield(price);
// Assert
return(result);
}
public void Equals_WithTwoStocksWithSameSymbolOfDifferentSubtypes_ReturnsTrue()
{
// Arrange
var stock1 = new CommonStock {
StockSymbol = "TEA"
};
var stock2 = new PreferredStock {
StockSymbol = "TEA"
};
// Act
var areEquals = stock1.Equals(stock2);
// Assert
Assert.True(areEquals);
}
public void Test_StocksPreferredYield()
{
string stock = "GIN";
double lastDividend = 8;
double fixedDividend = 2;
double parValue = 100;
double stockPrice = 25;
double price = 64;
double expected = ((fixedDividend / 100) * parValue) / price;
PreferredStock testStock = new PreferredStock(stock, lastDividend, fixedDividend, parValue, stockPrice);
double dividendYield = testStock.DividendYield(price);
Assert.AreEqual(expected, dividendYield);
}
public void Test_StocksPERatio()
{
string stock = "GIN";
double lastDividend = 8;
double fixedDividend = 2;
double parValue = 100;
double stockPrice = 25;
double price = 64;
double expected = price / lastDividend;
PreferredStock testStock = new PreferredStock(stock, lastDividend, fixedDividend, parValue, stockPrice);
double PEratio = testStock.PERatio(price);
Assert.AreEqual(expected, PEratio);
}
public void TestPreferredStockPERatio()
{
// Test Preferred Stock
PreferredStock stock;
stock = new PreferredStock("TST", 10, 1, 100);
float pe;
// Test 0/10 => 0
pe = stock.GetPERatio(0);
Assert.AreEqual(0, pe, float.Epsilon);
// Test 10/10 => 1
pe = stock.GetPERatio(10);
Assert.AreEqual(1, pe, float.Epsilon);
// Test 10/0 => NaN
stock.LastDividend = 0;
pe = stock.GetPERatio(10);
Assert.AreEqual(float.NaN, pe);
// LastPrice
stock = new PreferredStock("TST", 10, 1, 100);
// Test 0/10 => 0
stock.LastPrice = 0;
pe = stock.GetPERatio();
Assert.AreEqual(0, pe, float.Epsilon);
// Test 10/10 => 1
stock.LastPrice = 10;
pe = stock.GetPERatio();
Assert.AreEqual(1, pe, float.Epsilon);
// Test 10/0 => NaN
stock.LastPrice = 10;
stock.LastDividend = 0;
pe = stock.GetPERatio();
Assert.AreEqual(float.NaN, pe);
}
public void TestPreferredStockYield()
{
// Test Preferred Stock
PreferredStock stock;
stock = new PreferredStock("TST", 10, 0, 100);
float yield;
// Test 0*100/50 => 0
yield = stock.GetDividendYield(50);
Assert.AreEqual(0, yield, float.Epsilon);
// Test 0.1*100/10 => 1
stock.FixedDividend = 0.1f;
yield = stock.GetDividendYield(10);
Assert.AreEqual(1, yield, float.Epsilon);
// Test 0.1*100/0 => NaN
yield = stock.GetDividendYield(0);
Assert.AreEqual(float.NaN, yield);
// LastPrice
stock = new PreferredStock("TST", 10, 0, 100);
// Test 0*100/50 => 0
stock.LastPrice = 50;
yield = stock.GetDividendYield();
Assert.AreEqual(0, yield, float.Epsilon);
// Test 0.1*100/10 => 1
stock.LastPrice = 10;
stock.FixedDividend = 0.1f;
yield = stock.GetDividendYield();
Assert.AreEqual(1, yield, float.Epsilon);
// Test 0.1*100/0 => NaN
stock.LastPrice = 0;
yield = stock.GetDividendYield();
Assert.AreEqual(float.NaN, yield);
}
public void TestCreationPreferredStock()
{
IStock prefStock = new PreferredStock(1, 2, "GIN", 2);
Assert.IsNotNull(prefStock);
}
