public void TestCommonStockYield()
{
// Test Common Stock
CommonStock stock;
stock = new CommonStock("TST", 0, 100);
float yield;
// Test 0/50 => 0
yield = stock.GetDividendYield(50);
Assert.AreEqual(0, yield, float.Epsilon);
// Test 10/10 => 1
stock.LastDividend = 10;
yield = stock.GetDividendYield(10);
Assert.AreEqual(1, yield, float.Epsilon);
// Test 10/0 => NaN
yield = stock.GetDividendYield(0);
Assert.AreEqual(float.NaN, yield);
// LastPrice
stock = new CommonStock("TST", 0, 100);
// Test 0/50 => 0
stock.LastPrice = 50;
yield = stock.GetDividendYield();
Assert.AreEqual(0, yield, float.Epsilon);
// Test 10/10 => 1
stock.LastPrice = 10;
stock.LastDividend = 10;
yield = stock.GetDividendYield();
Assert.AreEqual(1, yield, float.Epsilon);
// Test 10/0 => NaN
stock.LastPrice = 0;
yield = stock.GetDividendYield();
Assert.AreEqual(float.NaN, yield);
}
