public void Multiple_Sellers()
{
var market = new MarketImpl();
var buy = new Offer(OfferType.Buy, COMMODITY, 1, 2);
var sell1 = new Offer(OfferType.Sell, COMMODITY, 1, 1);
var sell2 = new Offer(OfferType.Sell, COMMODITY, 1, 1);
market.AddOffer(buy);
market.AddOffer(sell1);
market.AddOffer(sell2);
market.ResolveOffers();
Assert.AreEqual(2, buy.Results.Count);
foreach (var result in buy.Results)
{
Assert.AreEqual(1, result.Amount);
Assert.AreEqual(1, result.Price);
}
Assert.AreEqual(1, sell1.Results.Count);
var sell1Result = sell1.Results.Single();
Assert.AreEqual(1, sell1Result.Amount);
Assert.AreEqual(1, sell1Result.Price);
Assert.AreEqual(1, sell2.Results.Count);
var sell2Result = sell2.Results.Single();
Assert.AreEqual(1, sell2Result.Amount);
Assert.AreEqual(1, sell2Result.Price);
}
public void Multiple_Buyers()
{
var market = new MarketImpl();
var buy1 = new Offer(OfferType.Buy, COMMODITY, 1, 1);
var buy2 = new Offer(OfferType.Buy, COMMODITY, 1, 1);
var sell = new Offer(OfferType.Sell, COMMODITY, 1, 2);
market.AddOffer(buy1);
market.AddOffer(buy2);
market.AddOffer(sell);
market.ResolveOffers();
Assert.AreEqual(1, buy1.Results.Count);
var buy1Result = buy1.Results.Single();
Assert.AreEqual(1, buy1Result.Amount);
Assert.AreEqual(1, buy1Result.Price);
Assert.AreEqual(1, buy2.Results.Count);
var buy2Result = buy2.Results.Single();
Assert.AreEqual(1, buy2Result.Amount);
Assert.AreEqual(1, buy2Result.Price);
Assert.AreEqual(2, sell.Results.Count);
foreach (var result in sell.Results)
{
Assert.AreEqual(1, result.Amount);
Assert.AreEqual(1, result.Price);
}
}
public void Simple_No_Trade_If_Buy_Price_Below_Sell()
{
var market = new MarketImpl();
var buy = new Offer(OfferType.Buy, COMMODITY, 1, 1);
var sell = new Offer(OfferType.Sell, COMMODITY, 2, 1);
market.AddOffer(buy);
market.AddOffer(sell);
market.ResolveOffers();
Assert.AreEqual(0, buy.Results.Count);
Assert.AreEqual(0, sell.Results.Count);
}
public void Simple_Halfway_Price_If_Buy_Price_Is_Greater()
{
var market = new MarketImpl();
var buy = new Offer(OfferType.Buy, COMMODITY, 3, 1);
var sell = new Offer(OfferType.Sell, COMMODITY, 1, 1);
market.AddOffer(buy);
market.AddOffer(sell);
market.ResolveOffers();
Assert.AreEqual(1, buy.Results.Count);
var buyResult = buy.Results.Single();
Assert.AreEqual(1, buyResult.Amount);
Assert.AreEqual(2, buyResult.Price);
Assert.AreEqual(1, sell.Results.Count);
var sellResult = sell.Results.Single();
Assert.AreEqual(1, sellResult.Amount);
Assert.AreEqual(2, sellResult.Price);
}
public void Simple_Limited_By_Amount([Values("buy", "sell")] string limited)
{
var market = new MarketImpl();
var buy = new Offer(OfferType.Buy, COMMODITY, 1, limited == "buy" ? 1 : 2);
var sell = new Offer(OfferType.Sell, COMMODITY, 1, limited == "buy" ? 2 : 1);
market.AddOffer(buy);
market.AddOffer(sell);
market.ResolveOffers();
Assert.AreEqual(1, buy.Results.Count);
var buyResult = buy.Results.Single();
Assert.AreEqual(1, buyResult.Amount);
Assert.AreEqual(1, buyResult.Price);
Assert.AreEqual(1, sell.Results.Count);
var sellResult = sell.Results.Single();
Assert.AreEqual(1, sellResult.Amount);
Assert.AreEqual(1, sellResult.Price);
}