public void UpdateStockWeightsDoesNotModifyAnEmptyStockList()
{
var sut = new StockWeightProvider();
var list = new List <Stock>();
sut.UpdateStockWeights(list);
Assert.IsEmpty(list);
}
public void UpdateStockWeightsIsCorrectForOnlyOneStockInList()
{
var sut = new StockWeightProvider();
var bond = new Bond(10.0m, 5);
var list = new List <Stock> {
bond
};
sut.UpdateStockWeights(list);
Assert.AreEqual(1.0m, bond.StockWeight);
}
public void UpdateStockWeightsSetsAllWeightsToZeroIfAllMarketValuesAreZero()
{
var sut = new StockWeightProvider();
var equity = new Equity(0.0m, 5);
var bond = new Bond(10.0m, 0);
var list = new List <Stock> {
equity, bond
};
sut.UpdateStockWeights(list);
Assert.AreEqual(0.0m, equity.StockWeight);
Assert.AreEqual(0.0m, bond.StockWeight);
}
public void UpdateStockWeightsIsCorrectForThreeTotalStocksOfEitherTypeInList()
{
var sut = new StockWeightProvider();
var bond1 = new Bond(10.0m, 5);
var bond2 = new Bond(3.0m, 10);
var equity1 = new Equity(2.5m, 8);
sut.UpdateStockWeights(new List <Stock> {
bond1, bond2, equity1
});
Assert.AreEqual(0.5m, bond1.StockWeight);
Assert.AreEqual(0.3m, bond2.StockWeight);
Assert.AreEqual(0.2m, equity1.StockWeight);
}
public void UpdateStockWeightsThrowsOnNullStockList()
{
var sut = new StockWeightProvider();
Assert.Throws <ArgumentNullException>(() => sut.UpdateStockWeights(null));
}