bitburner-src/test/jest/StockMarket.test.ts

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import { CONSTANTS } from "../../src/Constants";
import { Player } from "../../src/Player";
import { Company } from "../../src/Company/Company";
import { Server } from "../../src/Server/Server";
import { buyStock, sellStock, shortStock, sellShort } from "../../src/StockMarket/BuyingAndSelling";
import { Order } from "../../src/StockMarket/Order";
import {
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forecastForecastChangeFromCompanyWork,
forecastForecastChangeFromHack,
influenceStockThroughCompanyWork,
influenceStockThroughServerGrow,
influenceStockThroughServerHack,
} from "../../src/StockMarket/PlayerInfluencing";
import { processOrders, IProcessOrderRefs } from "../../src/StockMarket/OrderProcessing";
import { Stock, StockForecastInfluenceLimit } from "../../src/StockMarket/Stock";
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import {
cancelOrder,
deleteStockMarket,
initStockMarket,
initSymbolToStockMap,
placeOrder,
processStockPrices,
StockMarket,
SymbolToStockMap,
} from "../../src/StockMarket/StockMarket";
import {
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forecastChangePerPriceMovement,
getBuyTransactionCost,
getSellTransactionGain,
processTransactionForecastMovement,
} from "../../src/StockMarket/StockMarketHelpers";
import { OrderTypes } from "../../src/StockMarket/data/OrderTypes";
import { PositionTypes } from "../../src/StockMarket/data/PositionTypes";
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jest.mock(`!!raw-loader!../NetscriptDefinitions.d.ts`, () => "", {
virtual: true,
});
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// jest.mock("../src/ui/React/createPopup.tsx", () => ({
// createPopup: jest.fn(),
// }));
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describe("Stock Market Tests", function () {
const commission = CONSTANTS.StockMarketCommission;
// Generic Stock object that can be used by each test
let stock: Stock;
const ctorParams = {
b: true,
initPrice: 10e3,
marketCap: 5e9,
mv: 2,
name: "MockStock",
otlkMag: 20,
spreadPerc: 1,
shareTxForMovement: 5e3,
symbol: "mock",
};
beforeEach(function () {
function construct(): void {
stock = new Stock(ctorParams);
}
expect(construct).not.toThrow();
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});
describe("Stock Class", function () {
describe("constructor", function () {
it("should have default parameters", function () {
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function construct(): void {
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new Stock(); // eslint-disable-line no-new
}
expect(construct).not.toThrow();
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const defaultStock = new Stock();
expect(defaultStock).not.toEqual(null);
expect(defaultStock.name).toEqual("");
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});
it("should properly initialize props from parameters", function () {
expect(stock.name).toEqual(ctorParams.name);
expect(stock.symbol).toEqual(ctorParams.symbol);
expect(stock.price).toEqual(ctorParams.initPrice);
expect(stock.lastPrice).toEqual(ctorParams.initPrice);
expect(stock.b).toEqual(ctorParams.b);
expect(stock.mv).toEqual(ctorParams.mv);
expect(stock.shareTxForMovement).toEqual(ctorParams.shareTxForMovement);
expect(stock.shareTxUntilMovement).toEqual(ctorParams.shareTxForMovement);
expect(stock.maxShares).toBeLessThan(stock.totalShares);
expect(stock.spreadPerc).toEqual(ctorParams.spreadPerc);
expect(stock.otlkMag).toEqual(ctorParams.otlkMag);
expect(stock.otlkMagForecast).toEqual(ctorParams.b ? 50 + ctorParams.otlkMag : 50 - ctorParams.otlkMag);
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});
it("should properly initialize props from range-values", function () {
const params = {
b: true,
initPrice: {
max: 10e3,
min: 1e3,
},
marketCap: 5e9,
mv: {
divisor: 100,
max: 150,
min: 50,
},
name: "MockStock",
otlkMag: 10,
spreadPerc: {
divisor: 10,
max: 10,
min: 1,
},
shareTxForMovement: {
max: 10e3,
min: 5e3,
},
symbol: "mock",
};
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function construct(): void {
new Stock(params); // eslint-disable-line no-new
}
expect(construct).not.toThrow();
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const stock = new Stock(params);
expect(stock).not.toEqual(null);
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expect(stock.price).toBeGreaterThanOrEqual(params.initPrice.min);
expect(stock.price).toBeLessThanOrEqual(params.initPrice.max);
expect(stock.mv).toBeGreaterThanOrEqual(params.mv.min / params.mv.divisor);
expect(stock.mv).toBeLessThanOrEqual(params.mv.max / params.mv.divisor);
expect(stock.spreadPerc).toBeGreaterThanOrEqual(params.spreadPerc.min / params.spreadPerc.divisor);
expect(stock.spreadPerc).toBeLessThanOrEqual(params.spreadPerc.max / params.spreadPerc.divisor);
expect(stock.shareTxForMovement).toBeGreaterThanOrEqual(params.shareTxForMovement.min);
expect(stock.shareTxForMovement).toBeLessThanOrEqual(params.shareTxForMovement.max);
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});
it("should round the 'totalShare' prop to the nearest 100k", function () {
expect(stock.totalShares % 100e3).toEqual(0);
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});
});
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describe("#changeForecastForecast()", function () {
it("should get the stock's second-order forecast property", function () {
stock.changeForecastForecast(99);
expect(stock.otlkMagForecast).toEqual(99);
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stock.changeForecastForecast(1);
expect(stock.otlkMagForecast).toEqual(1);
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});
it("should prevent values outside of 0-100", function () {
stock.changeForecastForecast(101);
expect(stock.otlkMagForecast).toEqual(100);
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stock.changeForecastForecast(-1);
expect(stock.otlkMagForecast).toEqual(0);
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});
});
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describe("#changePrice()", function () {
it("should set both the last price and current price properties", function () {
const newPrice = 20e3;
stock.changePrice(newPrice);
expect(stock.lastPrice).toEqual(ctorParams.initPrice);
expect(stock.price).toEqual(newPrice);
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});
});
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describe("#cycleForecast()", function () {
it("should appropriately change the otlkMag by the given amount when b=true", function () {
stock.getForecastIncreaseChance = () => {
return 1;
};
stock.cycleForecast(5);
expect(stock.otlkMag).toEqual(ctorParams.otlkMag + 5);
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stock.getForecastIncreaseChance = () => {
return 0;
};
stock.cycleForecast(10);
expect(stock.otlkMag).toEqual(ctorParams.otlkMag - 5);
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});
it("should NOT(!) the stock's 'b' property if it causes 'otlkMag' to go below 0", function () {
stock.getForecastIncreaseChance = () => {
return 0;
};
stock.cycleForecast(25);
expect(stock.otlkMag).toEqual(5);
expect(stock.b).toEqual(false);
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});
});
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describe("#cycleForecastForecast()", function () {
it("should increase the stock's second-order forecast by a given amount", function () {
const expected = [65, 75];
stock.cycleForecastForecast(5);
expect(expected).toEqual(expect.arrayContaining([stock.otlkMagForecast]));
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});
});
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describe("#flipForecastForecast()", function () {
it("should flip the 'otlkMagForecast' property around 50", function () {
stock.otlkMagForecast = 50;
stock.flipForecastForecast();
expect(stock.otlkMagForecast).toEqual(50);
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stock.otlkMagForecast = 60;
stock.flipForecastForecast();
expect(stock.otlkMagForecast).toEqual(40);
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stock.otlkMagForecast = 90;
stock.flipForecastForecast();
expect(stock.otlkMagForecast).toEqual(10);
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stock.otlkMagForecast = 100;
stock.flipForecastForecast();
expect(stock.otlkMagForecast).toEqual(0);
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stock.otlkMagForecast = 40;
stock.flipForecastForecast();
expect(stock.otlkMagForecast).toEqual(60);
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stock.otlkMagForecast = 0;
stock.flipForecastForecast();
expect(stock.otlkMagForecast).toEqual(100);
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stock.otlkMagForecast = 25;
stock.flipForecastForecast();
expect(stock.otlkMagForecast).toEqual(75);
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});
});
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describe("#getAbsoluteForecast()", function () {
it("should return the absolute forecast on a 1-100 scale", function () {
stock.b = true;
stock.otlkMag = 10;
expect(stock.getAbsoluteForecast()).toEqual(60);
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stock.b = false;
expect(stock.getAbsoluteForecast()).toEqual(40);
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stock.otlkMag = 30;
expect(stock.getAbsoluteForecast()).toEqual(20);
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stock.b = true;
expect(stock.getAbsoluteForecast()).toEqual(80);
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stock.otlkMag = 0;
expect(stock.getAbsoluteForecast()).toEqual(50);
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stock.b = false;
expect(stock.getAbsoluteForecast()).toEqual(50);
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});
});
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describe("#getAskPrice()", function () {
it("should return the price increased by spread percentage", function () {
const perc = stock.spreadPerc / 100;
expect(perc).toBeLessThan(1);
expect(perc).toBeGreaterThan(0);
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const expected = stock.price * (1 + perc);
expect(stock.getAskPrice()).toEqual(expected);
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});
});
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describe("#getBidPrice()", function () {
it("should return the price decreased by spread percentage", function () {
const perc = stock.spreadPerc / 100;
expect(perc).toBeLessThan(1);
expect(perc).toBeGreaterThan(0);
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const expected = stock.price * (1 - perc);
expect(stock.getBidPrice()).toEqual(expected);
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});
});
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describe("#getForecastIncreaseChance()", function () {
it("should return the chance that the stock has of increasing in decimal form", function () {
stock.b = true;
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stock.otlkMagForecast = 90;
stock.otlkMag = 20; // Absolute forecast of 70
expect(stock.getForecastIncreaseChance()).toEqual(0.7);
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stock.otlkMag = 25; // Absolute forecast of 75
expect(stock.getForecastIncreaseChance()).toEqual(0.65);
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stock.otlkMagForecast = 100;
stock.otlkMag = 0; // Absolute forecast of 50
expect(stock.getForecastIncreaseChance()).toEqual(0.95);
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stock.otlkMagForecast = 60;
stock.otlkMag = 25; // Absolute forecast of 75
expect(stock.getForecastIncreaseChance()).toEqual(0.35);
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stock.otlkMagForecast = 10;
expect(stock.getForecastIncreaseChance()).toEqual(0.05);
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stock.b = false;
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stock.otlkMagForecast = 90;
stock.otlkMag = 20; // Absolute forecast of 30
expect(stock.getForecastIncreaseChance()).toEqual(0.95);
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stock.otlkMagForecast = 50;
stock.otlkMag = 25; // Absolute forecast of 25
expect(stock.getForecastIncreaseChance()).toEqual(0.75);
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stock.otlkMagForecast = 100;
stock.otlkMag = 0; // Absolute forecast of 50
expect(stock.getForecastIncreaseChance()).toEqual(0.95);
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stock.otlkMagForecast = 5;
stock.otlkMag = 25; // Absolute forecast of 25
expect(stock.getForecastIncreaseChance()).toEqual(0.3);
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stock.otlkMagForecast = 10;
expect(stock.getForecastIncreaseChance()).toEqual(0.35);
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stock.otlkMagForecast = 50;
stock.otlkMag = 0;
expect(stock.getForecastIncreaseChance()).toEqual(0.5);
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stock.otlkMagForecast = 25;
stock.otlkMag = 5; // Asolute forecast of 45
expect(stock.getForecastIncreaseChance()).toEqual(0.3);
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});
});
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describe("#influenceForecast()", function () {
beforeEach(function () {
stock.otlkMag = 10;
});
it("should change the forecast's value towards 50", function () {
stock.influenceForecast(2);
expect(stock.otlkMag).toEqual(8);
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});
it("should not care about whether the stock is in bull or bear mode", function () {
stock.b = true;
stock.influenceForecast(1);
expect(stock.otlkMag).toEqual(9);
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stock.b = false;
stock.influenceForecast(2);
expect(stock.otlkMag).toEqual(7);
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});
it("should not influence the forecast beyond the limit", function () {
stock.influenceForecast(10);
expect(stock.otlkMag).toEqual(StockForecastInfluenceLimit);
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stock.influenceForecast(10);
expect(stock.otlkMag).toEqual(StockForecastInfluenceLimit);
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});
});
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describe("#influenceForecastForecast()", function () {
it("should change the second-order forecast's value towards 50", function () {
stock.otlkMagForecast = 75;
stock.influenceForecastForecast(15);
expect(stock.otlkMagForecast).toEqual(60);
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stock.otlkMagForecast = 25;
stock.influenceForecastForecast(15);
expect(stock.otlkMagForecast).toEqual(40);
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});
it("should not change the second-order forecast past 50", function () {
stock.otlkMagForecast = 40;
stock.influenceForecastForecast(20);
expect(stock.otlkMagForecast).toEqual(50);
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stock.otlkMagForecast = 60;
stock.influenceForecastForecast(20);
expect(stock.otlkMagForecast).toEqual(50);
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});
});
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});
describe("StockMarket object", function () {
describe("Initialization", function () {
// Keeps track of initialized stocks. Contains their symbols
const stocks: string[] = [];
beforeEach(function () {
expect(initStockMarket).not.toThrow();
expect(initSymbolToStockMap).not.toThrow();
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});
it("should have Stock objects", function () {
for (const prop in StockMarket) {
const stock = StockMarket[prop];
if (stock instanceof Stock) {
stocks.push(stock.symbol);
}
}
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// We'll just check that there are some stocks
expect(stocks.length).toBeGreaterThan(1);
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});
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it("should have an order book in the 'Orders' property", function () {
expect(StockMarket).toHaveProperty("Orders");
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const orderbook = StockMarket["Orders"];
for (const symbol of stocks) {
const ordersForStock = orderbook[symbol];
expect(ordersForStock).toEqual([]);
expect(ordersForStock.length).toEqual(0);
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}
});
it("should have properties for managing game cycles", function () {
expect(StockMarket).toHaveProperty("storedCycles");
expect(StockMarket["storedCycles"]).toEqual(0);
expect(StockMarket).toHaveProperty("lastUpdate");
expect(StockMarket["lastUpdate"]).toEqual(0);
expect(StockMarket).toHaveProperty("ticksUntilCycle");
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expect(typeof StockMarket["ticksUntilCycle"]).toBe("number");
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});
});
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describe("Deletion", function () {
it("should set StockMarket to be an empty object", function () {
expect(StockMarket).not.toEqual({});
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deleteStockMarket();
expect(StockMarket).toEqual({
lastUpdate: 0,
Orders: {},
storedCycles: 0,
ticksUntilCycle: 0,
});
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});
});
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describe("processStockPrices()", function () {
beforeEach(function () {
deleteStockMarket();
initStockMarket();
initSymbolToStockMap();
});
it("should store cycles until it actually processes", function () {
expect(StockMarket["storedCycles"]).toEqual(0);
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processStockPrices(10);
expect(StockMarket["storedCycles"]).toEqual(10);
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});
it("should trigger a price update when it has enough cycles", function () {
// Get the initial prices
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const initialValues: Record<string, any> = {};
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for (const stockName in StockMarket) {
const stock = StockMarket[stockName];
if (!(stock instanceof Stock)) {
continue;
}
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initialValues[stock.symbol] = { ...stock };
}
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// Don't know or care how many exact cycles are required
StockMarket.lastUpdate = new Date().getTime() - 5e3;
processStockPrices(1e9);
// Both price and 'otlkMag' should be different
for (const stockName in StockMarket) {
const stock = StockMarket[stockName];
if (!(stock instanceof Stock)) {
continue;
}
const initValue = initialValues[stock.symbol];
expect(initValue.price).not.toEqual(stock.price);
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if (initValue.otlkMag === stock.otlkMag && initValue.b === stock.b) {
throw new Error("expected either price or otlkMag to be different");
}
}
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});
});
});
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describe("StockToSymbolMap", function () {
beforeEach(function () {
deleteStockMarket();
initStockMarket();
initSymbolToStockMap();
});
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it("should map stock symbols to their corresponding Stock Objects", function () {
for (const stockName in StockMarket) {
const stock = StockMarket[stockName];
if (!(stock instanceof Stock)) {
continue;
}
expect(SymbolToStockMap[stock.symbol]).toEqual(stock);
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}
});
});
describe("Transaction Cost Calculator Functions", function () {
describe("getBuyTransactionCost()", function () {
it("should fail on invalid 'stock' argument", function () {
const res = getBuyTransactionCost({} as Stock, 10, PositionTypes.Long);
expect(res).toEqual(null);
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});
it("should fail on invalid 'shares' arg", function () {
let res = getBuyTransactionCost(stock, NaN, PositionTypes.Long);
expect(res).toEqual(null);
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res = getBuyTransactionCost(stock, -1, PositionTypes.Long);
expect(res).toEqual(null);
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});
it("should properly evaluate LONG transactions", function () {
const shares = ctorParams.shareTxForMovement / 2;
const res = getBuyTransactionCost(stock, shares, PositionTypes.Long);
expect(res).toEqual(shares * stock.getAskPrice() + commission);
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});
it("should properly evaluate SHORT transactions", function () {
const shares = ctorParams.shareTxForMovement / 2;
const res = getBuyTransactionCost(stock, shares, PositionTypes.Short);
expect(res).toEqual(shares * stock.getBidPrice() + commission);
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});
it("should cap the 'shares' argument at the stock's maximum number of shares", function () {
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const maxRes = getBuyTransactionCost(stock, stock.maxShares, PositionTypes.Long);
const exceedRes = getBuyTransactionCost(stock, stock.maxShares * 10, PositionTypes.Long);
expect(maxRes).toEqual(exceedRes);
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});
});
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describe("getSellTransactionGain()", function () {
it("should fail on invalid 'stock' argument", function () {
const res = getSellTransactionGain({} as Stock, 10, PositionTypes.Long);
expect(res).toEqual(null);
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});
it("should fail on invalid 'shares' arg", function () {
let res = getSellTransactionGain(stock, NaN, PositionTypes.Long);
expect(res).toEqual(null);
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res = getSellTransactionGain(stock, -1, PositionTypes.Long);
expect(res).toEqual(null);
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});
it("should properly evaluate LONG transactionst", function () {
const shares = ctorParams.shareTxForMovement / 2;
const res = getSellTransactionGain(stock, shares, PositionTypes.Long);
const expected = shares * stock.getBidPrice() - commission;
expect(res).toEqual(expected);
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});
it("should properly evaluate SHORT transactions", function () {
// We need to set this property in order to calculate gains from short position
stock.playerAvgShortPx = stock.price * 2;
const shares = ctorParams.shareTxForMovement / 2;
const res = getSellTransactionGain(stock, shares, PositionTypes.Short);
const expected =
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shares * stock.playerAvgShortPx + shares * (stock.playerAvgShortPx - stock.getAskPrice()) - commission;
expect(res).toEqual(expected);
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});
it("should cap the 'shares' argument at the stock's maximum number of shares", function () {
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const maxRes = getSellTransactionGain(stock, stock.maxShares, PositionTypes.Long);
const exceedRes = getSellTransactionGain(stock, stock.maxShares * 10, PositionTypes.Long);
expect(maxRes).toEqual(exceedRes);
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});
});
});
describe("Forecast Movement Processor Function", function () {
// N = 1 is the original forecast
function getNthForecast(origForecast: number, n: number): number {
return origForecast - forecastChangePerPriceMovement * (n - 1);
}
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function getNthForecastForecast(origForecastForecast: number, n: number): number {
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if (stock.otlkMagForecast > 50) {
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const expected = origForecastForecast - forecastChangePerPriceMovement * (n - 1) * (stock.mv / 100);
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return expected < 50 ? 50 : expected;
} else if (stock.otlkMagForecast < 50) {
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const expected = origForecastForecast + forecastChangePerPriceMovement * (n - 1) * (stock.mv / 100);
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return expected > 50 ? 50 : expected;
} else {
return 50;
}
}
describe("processTransactionForecastMovement() for buy transactions", function () {
const noMvmtShares = Math.round(ctorParams.shareTxForMovement / 2.2);
const mvmtShares = ctorParams.shareTxForMovement * 3 + noMvmtShares;
it("should do nothing on invalid 'stock' argument", function () {
const oldTracker = stock.shareTxUntilMovement;
processTransactionForecastMovement({} as Stock, mvmtShares);
expect(stock.shareTxUntilMovement).toEqual(oldTracker);
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});
it("should do nothing on invalid 'shares' arg", function () {
const oldTracker = stock.shareTxUntilMovement;
processTransactionForecastMovement(stock, NaN);
expect(stock.shareTxUntilMovement).toEqual(oldTracker);
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processTransactionForecastMovement(stock, -1);
expect(stock.shareTxUntilMovement).toEqual(oldTracker);
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});
it("should properly evaluate a LONG transaction that doesn't trigger a forecast movement", function () {
const oldForecast = stock.otlkMag;
processTransactionForecastMovement(stock, noMvmtShares);
expect(stock.otlkMag).toEqual(oldForecast);
expect(stock.shareTxUntilMovement).toEqual(stock.shareTxForMovement - noMvmtShares);
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});
it("should properly evaluate a SHORT transaction that doesn't trigger a forecast movement", function () {
const oldForecast = stock.otlkMag;
processTransactionForecastMovement(stock, noMvmtShares);
expect(stock.otlkMag).toEqual(oldForecast);
expect(stock.shareTxUntilMovement).toEqual(stock.shareTxForMovement - noMvmtShares);
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});
it("should properly evaluate LONG transactions that triggers forecast movements", function () {
const oldForecast = stock.otlkMag;
const oldForecastForecast = stock.otlkMagForecast;
processTransactionForecastMovement(stock, mvmtShares);
expect(stock.otlkMag).toEqual(getNthForecast(oldForecast, 4));
expect(stock.otlkMagForecast).toEqual(getNthForecastForecast(oldForecastForecast, 4));
expect(stock.shareTxUntilMovement).toEqual(stock.shareTxForMovement - noMvmtShares);
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});
it("should properly evaluate SHORT transactions that triggers forecast movements", function () {
const oldForecast = stock.otlkMag;
const oldForecastForecast = stock.otlkMagForecast;
processTransactionForecastMovement(stock, mvmtShares);
expect(stock.otlkMag).toEqual(getNthForecast(oldForecast, 4));
expect(stock.otlkMagForecast).toEqual(getNthForecastForecast(oldForecastForecast, 4));
expect(stock.shareTxUntilMovement).toEqual(stock.shareTxForMovement - noMvmtShares);
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});
it("should properly evaluate LONG transactions of exactly 'shareTxForMovement' shares", function () {
const oldForecast = stock.otlkMag;
const oldForecastForecast = stock.otlkMagForecast;
processTransactionForecastMovement(stock, stock.shareTxForMovement);
expect(stock.otlkMag).toEqual(getNthForecast(oldForecast, 2));
expect(stock.otlkMagForecast).toEqual(getNthForecastForecast(oldForecastForecast, 2));
expect(stock.shareTxUntilMovement).toEqual(stock.shareTxForMovement);
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});
it("should properly evaluate LONG transactions that total to 'shareTxForMovement' shares", function () {
const oldForecast = stock.otlkMag;
const oldForecastForecast = stock.otlkMagForecast;
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processTransactionForecastMovement(stock, Math.round(stock.shareTxForMovement / 2));
expect(stock.shareTxUntilMovement).toBeLessThan(stock.shareTxForMovement);
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processTransactionForecastMovement(stock, stock.shareTxUntilMovement);
expect(stock.otlkMag).toEqual(getNthForecast(oldForecast, 2));
expect(stock.otlkMagForecast).toEqual(getNthForecastForecast(oldForecastForecast, 2));
expect(stock.shareTxUntilMovement).toEqual(stock.shareTxForMovement);
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});
it("should properly evaluate LONG transactions that are a multiple of 'shareTxForMovement' shares", function () {
const oldForecast = stock.otlkMag;
const oldForecastForecast = stock.otlkMagForecast;
processTransactionForecastMovement(stock, 3 * stock.shareTxForMovement);
expect(stock.otlkMag).toEqual(getNthForecast(oldForecast, 4));
expect(stock.otlkMagForecast).toEqual(getNthForecastForecast(oldForecastForecast, 4));
expect(stock.shareTxUntilMovement).toEqual(stock.shareTxForMovement);
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});
it("should properly evaluate SHORT transactions of exactly 'shareTxForMovement' shares", function () {
const oldForecast = stock.otlkMag;
const oldForecastForecast = stock.otlkMagForecast;
processTransactionForecastMovement(stock, stock.shareTxForMovement);
expect(stock.otlkMag).toEqual(getNthForecast(oldForecast, 2));
expect(stock.otlkMagForecast).toEqual(getNthForecastForecast(oldForecastForecast, 2));
expect(stock.shareTxUntilMovement).toEqual(stock.shareTxForMovement);
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});
it("should properly evaluate SHORT transactions that total to 'shareTxForMovement' shares", function () {
const oldForecast = stock.otlkMag;
const oldForecastForecast = stock.otlkMagForecast;
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processTransactionForecastMovement(stock, Math.round(stock.shareTxForMovement / 2));
expect(stock.shareTxUntilMovement).toBeLessThan(stock.shareTxForMovement);
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processTransactionForecastMovement(stock, stock.shareTxUntilMovement);
expect(stock.otlkMag).toEqual(getNthForecast(oldForecast, 2));
expect(stock.otlkMagForecast).toEqual(getNthForecastForecast(oldForecastForecast, 2));
expect(stock.shareTxUntilMovement).toEqual(stock.shareTxForMovement);
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});
it("should properly evaluate SHORT transactions that are a multiple of 'shareTxForMovement' shares", function () {
const oldForecast = stock.otlkMag;
const oldForecastForecast = stock.otlkMagForecast;
processTransactionForecastMovement(stock, 3 * stock.shareTxForMovement);
expect(stock.otlkMag).toEqual(getNthForecast(oldForecast, 4));
expect(stock.otlkMagForecast).toEqual(getNthForecastForecast(oldForecastForecast, 4));
expect(stock.shareTxUntilMovement).toEqual(stock.shareTxForMovement);
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});
});
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describe("processTransactionForecastMovement() for sell transactions", function () {
const noMvmtShares = Math.round(ctorParams.shareTxForMovement / 2.2);
const mvmtShares = ctorParams.shareTxForMovement * 3 + noMvmtShares;
it("should do nothing on invalid 'stock' argument", function () {
const oldTracker = stock.shareTxUntilMovement;
processTransactionForecastMovement({} as Stock, mvmtShares);
expect(stock.shareTxUntilMovement).toEqual(oldTracker);
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});
it("should do nothing on invalid 'shares' arg", function () {
const oldTracker = stock.shareTxUntilMovement;
processTransactionForecastMovement(stock, NaN);
expect(stock.shareTxUntilMovement).toEqual(oldTracker);
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processTransactionForecastMovement(stock, -1);
expect(stock.shareTxUntilMovement).toEqual(oldTracker);
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});
it("should properly evaluate a LONG transaction that doesn't trigger a price movement", function () {
const oldForecast = stock.otlkMag;
processTransactionForecastMovement(stock, noMvmtShares);
expect(stock.otlkMag).toEqual(oldForecast);
expect(stock.shareTxUntilMovement).toEqual(stock.shareTxForMovement - noMvmtShares);
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});
it("should properly evaluate a SHORT transaction that doesn't trigger a price movement", function () {
const oldForecast = stock.otlkMag;
processTransactionForecastMovement(stock, noMvmtShares);
expect(stock.otlkMag).toEqual(oldForecast);
expect(stock.shareTxUntilMovement).toEqual(stock.shareTxForMovement - noMvmtShares);
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});
it("should properly evaluate LONG transactions that trigger price movements", function () {
const oldForecast = stock.otlkMag;
processTransactionForecastMovement(stock, mvmtShares);
expect(stock.otlkMag).toEqual(getNthForecast(oldForecast, 4));
expect(stock.shareTxUntilMovement).toEqual(stock.shareTxForMovement - noMvmtShares);
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});
it("should properly evaluate SHORT transactions that trigger price movements", function () {
const oldForecast = stock.otlkMag;
processTransactionForecastMovement(stock, mvmtShares);
expect(stock.otlkMag).toEqual(getNthForecast(oldForecast, 4));
expect(stock.shareTxUntilMovement).toEqual(stock.shareTxForMovement - noMvmtShares);
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});
it("should properly evaluate LONG transactions of exactly 'shareTxForMovement' shares", function () {
const oldForecast = stock.otlkMag;
processTransactionForecastMovement(stock, stock.shareTxForMovement);
expect(stock.otlkMag).toEqual(getNthForecast(oldForecast, 2));
expect(stock.shareTxUntilMovement).toEqual(stock.shareTxForMovement);
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});
it("should properly evaluate LONG transactions that total to 'shareTxForMovement' shares", function () {
const oldForecast = stock.otlkMag;
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processTransactionForecastMovement(stock, Math.round(stock.shareTxForMovement / 2));
expect(stock.shareTxUntilMovement).toBeLessThan(stock.shareTxForMovement);
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processTransactionForecastMovement(stock, stock.shareTxUntilMovement);
expect(stock.otlkMag).toEqual(getNthForecast(oldForecast, 2));
expect(stock.shareTxUntilMovement).toEqual(stock.shareTxForMovement);
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});
it("should properly evaluate LONG transactions that are a multiple of 'shareTxForMovement' shares", function () {
const oldForecast = stock.otlkMag;
processTransactionForecastMovement(stock, 3 * stock.shareTxForMovement);
expect(stock.otlkMag).toEqual(getNthForecast(oldForecast, 4));
expect(stock.shareTxUntilMovement).toEqual(stock.shareTxForMovement);
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});
it("should properly evaluate SHORT transactions of exactly 'shareTxForMovement' shares", function () {
const oldForecast = stock.otlkMag;
processTransactionForecastMovement(stock, stock.shareTxForMovement);
expect(stock.otlkMag).toEqual(getNthForecast(oldForecast, 2));
expect(stock.shareTxUntilMovement).toEqual(stock.shareTxForMovement);
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});
it("should properly evaluate SHORT transactions that total to 'shareTxForMovement' shares", function () {
const oldForecast = stock.otlkMag;
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processTransactionForecastMovement(stock, Math.round(stock.shareTxForMovement / 2));
expect(stock.shareTxUntilMovement).toBeLessThan(stock.shareTxForMovement);
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processTransactionForecastMovement(stock, stock.shareTxUntilMovement);
expect(stock.otlkMag).toEqual(getNthForecast(oldForecast, 2));
expect(stock.shareTxUntilMovement).toEqual(stock.shareTxForMovement);
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});
it("should properly evaluate SHORT transactions that are a multiple of 'shareTxForMovement' shares", function () {
const oldForecast = stock.otlkMag;
processTransactionForecastMovement(stock, 3 * stock.shareTxForMovement);
expect(stock.otlkMag).toEqual(getNthForecast(oldForecast, 4));
expect(stock.shareTxUntilMovement).toEqual(stock.shareTxForMovement);
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});
});
});
describe("Transaction (Buy/Sell) Functions", function () {
const suppressDialogOpt = { suppressDialog: true };
describe("buyStock()", function () {
it("should fail for invalid arguments", function () {
expect(buyStock({} as Stock, 1, null, suppressDialogOpt)).toEqual(false);
expect(buyStock(stock, 0, null, suppressDialogOpt)).toEqual(false);
expect(buyStock(stock, -1, null, suppressDialogOpt)).toEqual(false);
expect(buyStock(stock, NaN, null, suppressDialogOpt)).toEqual(false);
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});
it("should fail if player doesn't have enough money", function () {
Player.setMoney(0);
expect(buyStock(stock, 1, null, suppressDialogOpt)).toEqual(false);
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});
it("should not allow for transactions that exceed the maximum shares", function () {
const maxShares = stock.maxShares;
expect(buyStock(stock, maxShares + 1, null, suppressDialogOpt)).toEqual(false);
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});
it("should return true and properly update stock properties for successful transactions", function () {
const shares = 1e3;
const cost = getBuyTransactionCost(stock, shares, PositionTypes.Long);
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expect(cost).not.toBeNull();
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// Checked above
// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
Player.setMoney(cost!);
expect(buyStock(stock, shares, null, suppressDialogOpt)).toEqual(true);
expect(stock.playerShares).toEqual(shares);
expect(stock.playerAvgPx).toBeGreaterThan(0);
expect(Player.money).toEqual(0);
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});
});
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describe("sellStock()", function () {
it("should fail for invalid arguments", function () {
expect(sellStock({} as Stock, 1, null, suppressDialogOpt)).toEqual(false);
expect(sellStock(stock, 0, null, suppressDialogOpt)).toEqual(false);
expect(sellStock(stock, -1, null, suppressDialogOpt)).toEqual(false);
expect(sellStock(stock, NaN, null, suppressDialogOpt)).toEqual(false);
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});
it("should fail if player doesn't have any shares", function () {
Player.setMoney(0);
expect(sellStock(stock, 1, null, suppressDialogOpt)).toEqual(false);
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});
it("should not allow for transactions that exceed the maximum shares", function () {
const maxShares = stock.maxShares;
expect(sellStock(stock, maxShares + 1, null, suppressDialogOpt)).toEqual(false);
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});
it("should return true and properly update stock properties for successful transactions", function () {
const shares = 1e3;
stock.playerShares = shares;
stock.playerAvgPx = stock.price;
const gain = getSellTransactionGain(stock, shares, PositionTypes.Long);
Player.setMoney(0);
expect(sellStock(stock, shares, null, suppressDialogOpt)).toEqual(true);
expect(stock.playerShares).toEqual(0);
expect(stock.playerAvgPx).toEqual(0);
expect(Player.money).toEqual(gain);
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});
it("should cap the number of sharse sold to however many the player owns", function () {
const attemptedShares = 2e3;
const actualShares = 1e3;
stock.playerShares = actualShares;
stock.playerAvgPx = stock.price;
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const gain = getSellTransactionGain(stock, actualShares, PositionTypes.Long);
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Player.setMoney(0);
expect(sellStock(stock, attemptedShares, null, suppressDialogOpt)).toEqual(true);
expect(stock.playerShares).toEqual(0);
expect(stock.playerAvgPx).toEqual(0);
expect(Player.money).toEqual(gain);
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});
it("should properly update stock properties for partial transactions", function () {
const shares = 1e3;
const origPrice = stock.price;
stock.playerShares = 2 * shares;
stock.playerAvgPx = origPrice;
const gain = getSellTransactionGain(stock, shares, PositionTypes.Long);
Player.setMoney(0);
expect(sellStock(stock, shares, null, suppressDialogOpt)).toEqual(true);
expect(stock.playerShares).toEqual(shares);
expect(stock.playerAvgPx).toEqual(origPrice);
expect(Player.money).toEqual(gain);
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});
});
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describe("shortStock()", function () {
it("should fail for invalid arguments", function () {
expect(shortStock({} as Stock, 1, null, suppressDialogOpt)).toEqual(false);
expect(shortStock(stock, 0, null, suppressDialogOpt)).toEqual(false);
expect(shortStock(stock, -1, null, suppressDialogOpt)).toEqual(false);
expect(shortStock(stock, NaN, null, suppressDialogOpt)).toEqual(false);
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});
it("should fail if player doesn't have enough money", function () {
Player.setMoney(0);
expect(shortStock(stock, 1, null, suppressDialogOpt)).toEqual(false);
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});
it("should not allow for transactions that exceed the maximum shares", function () {
const maxShares = stock.maxShares;
expect(shortStock(stock, maxShares + 1, null, suppressDialogOpt)).toEqual(false);
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});
it("should return true and properly update stock properties for successful transactions", function () {
const shares = 1e3;
const cost = getBuyTransactionCost(stock, shares, PositionTypes.Short);
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expect(cost).not.toBeNull();
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// Checked above
// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
Player.setMoney(cost!);
expect(shortStock(stock, shares, null, suppressDialogOpt)).toEqual(true);
expect(stock.playerShortShares).toEqual(shares);
expect(stock.playerAvgShortPx).toBeGreaterThan(0);
expect(Player.money).toEqual(0);
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});
});
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describe("sellShort()", function () {
it("should fail for invalid arguments", function () {
expect(sellShort({} as Stock, 1, null, suppressDialogOpt)).toEqual(false);
expect(sellShort(stock, 0, null, suppressDialogOpt)).toEqual(false);
expect(sellShort(stock, -1, null, suppressDialogOpt)).toEqual(false);
expect(sellShort(stock, NaN, null, suppressDialogOpt)).toEqual(false);
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});
it("should fail if player doesn't have any shares", function () {
Player.setMoney(0);
expect(sellShort(stock, 1, null, suppressDialogOpt)).toEqual(false);
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});
it("should not allow for transactions that exceed the maximum shares", function () {
const maxShares = stock.maxShares;
expect(sellShort(stock, maxShares + 1, null, suppressDialogOpt)).toEqual(false);
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});
it("should return true and properly update stock properties for successful transactions", function () {
const shares = 1e3;
stock.playerShortShares = shares;
stock.playerAvgShortPx = stock.price;
const gain = getSellTransactionGain(stock, shares, PositionTypes.Short);
Player.setMoney(0);
expect(sellShort(stock, shares, null, suppressDialogOpt)).toEqual(true);
expect(stock.playerShortShares).toEqual(0);
expect(stock.playerAvgShortPx).toEqual(0);
expect(Player.money).toEqual(gain);
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});
it("should cap the number of sharse sold to however many the player owns", function () {
const attemptedShares = 2e3;
const actualShares = 1e3;
stock.playerShortShares = actualShares;
stock.playerAvgShortPx = stock.price;
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const gain = getSellTransactionGain(stock, actualShares, PositionTypes.Short);
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Player.setMoney(0);
expect(sellShort(stock, attemptedShares, null, suppressDialogOpt)).toEqual(true);
expect(stock.playerShortShares).toEqual(0);
expect(stock.playerAvgShortPx).toEqual(0);
expect(Player.money).toEqual(gain);
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});
it("should properly update stock properties for partial transactions", function () {
const shares = 1e3;
const origPrice = stock.price;
stock.playerShortShares = 2 * shares;
stock.playerAvgShortPx = origPrice;
const gain = getSellTransactionGain(stock, shares, PositionTypes.Short);
Player.setMoney(0);
expect(sellShort(stock, shares, null, suppressDialogOpt)).toEqual(true);
expect(stock.playerShortShares).toEqual(shares);
expect(stock.playerAvgShortPx).toEqual(origPrice);
expect(Player.money).toEqual(gain);
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});
});
});
describe("Order Class", function () {
it("should throw on invalid arguments", function () {
function invalid1(): Order {
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return new Order({} as string, 1, 1, OrderTypes.LimitBuy, PositionTypes.Long);
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}
function invalid2(): Order {
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return new Order("FOO", "z" as any as number, 0, OrderTypes.LimitBuy, PositionTypes.Short);
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}
function invalid3(): Order {
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return new Order("FOO", 1, {} as number, OrderTypes.LimitBuy, PositionTypes.Short);
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}
function invalid4(): Order {
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return new Order("FOO", 1, NaN, OrderTypes.LimitBuy, PositionTypes.Short);
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}
function invalid5(): Order {
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return new Order("FOO", NaN, 0, OrderTypes.LimitBuy, PositionTypes.Short);
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}
expect(invalid1).toThrow();
expect(invalid2).toThrow();
expect(invalid3).toThrow();
expect(invalid4).toThrow();
expect(invalid5).toThrow();
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});
});
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describe("Order Placing & Processing", function () {
beforeEach(function () {
expect(initStockMarket).not.toThrow();
expect(initSymbolToStockMap).not.toThrow();
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// Create an order book for our mock stock
StockMarket["Orders"][stock.symbol] = [];
});
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describe("placeOrder()", function () {
it("should return false when it's called with invalid arguments", function () {
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const invalid1 = placeOrder({} as Stock, 1, 1, OrderTypes.LimitBuy, PositionTypes.Long);
const invalid2 = placeOrder(stock, "foo" as any as number, 2, OrderTypes.LimitBuy, PositionTypes.Long);
const invalid3 = placeOrder(stock, 1, "foo" as any as number, OrderTypes.LimitBuy, PositionTypes.Long);
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expect(invalid1).toEqual(false);
expect(invalid2).toEqual(false);
expect(invalid3).toEqual(false);
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expect(StockMarket["Orders"][stock.symbol]).toEqual([]);
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});
it("should return true and update the order book for valid arguments", function () {
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const res = placeOrder(stock, 1e3, 9e3, OrderTypes.LimitBuy, PositionTypes.Long);
expect(res).toEqual(true);
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expect(StockMarket["Orders"][stock.symbol]).toHaveLength(1);
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const order = StockMarket["Orders"][stock.symbol][0];
expect(order).toBeInstanceOf(Order);
expect(order.stockSymbol).toEqual(ctorParams.symbol);
expect(order.shares).toEqual(1e3);
expect(order.price).toEqual(9e3);
expect(order.type).toEqual(OrderTypes.LimitBuy);
expect(order.pos).toEqual(PositionTypes.Long);
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});
});
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describe("cancelOrder()", function () {
beforeEach(function () {
StockMarket["Orders"][stock.symbol] = [];
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const res = placeOrder(stock, 1e3, 9e3, OrderTypes.LimitBuy, PositionTypes.Long);
expect(res).toEqual(true);
expect(StockMarket["Orders"][stock.symbol]).toHaveLength(1);
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});
it("returns true & removes an Order from the order book", function () {
const order = StockMarket["Orders"][stock.symbol][0];
const res = cancelOrder({ order });
expect(res).toEqual(true);
expect(StockMarket["Orders"][stock.symbol]).toHaveLength(0);
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});
it("should also work when passing in order parameters separately", function () {
const res = cancelOrder({
stock,
shares: 1e3,
price: 9e3,
type: OrderTypes.LimitBuy,
pos: PositionTypes.Long,
});
expect(res).toEqual(true);
expect(StockMarket["Orders"][stock.symbol]).toHaveLength(0);
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});
it("should return false and do nothing when the specified order doesn't exist", function () {
// Same parameters, but its a different object
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const order = new Order(stock.symbol, 1e3, 9e3, OrderTypes.LimitBuy, PositionTypes.Long);
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const res = cancelOrder({ order });
expect(res).toEqual(false);
expect(StockMarket["Orders"][stock.symbol]).toHaveLength(1);
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const res2 = cancelOrder({
stock,
shares: 999,
price: 9e3,
type: OrderTypes.LimitBuy,
pos: PositionTypes.Long,
});
expect(res2).toEqual(false);
expect(StockMarket["Orders"][stock.symbol]).toHaveLength(1);
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});
});
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describe("processOrders()", function () {
let processOrdersRefs: IProcessOrderRefs;
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beforeEach(function () {
expect(initStockMarket).not.toThrow();
expect(initSymbolToStockMap).not.toThrow();
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StockMarket[stock.name] = stock;
SymbolToStockMap[stock.symbol] = stock;
StockMarket["Orders"][stock.symbol] = [];
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stock.playerShares = 1e3;
stock.playerShortShares = 1e3;
Player.setMoney(100e9);
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processOrdersRefs = {
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stockMarket: StockMarket,
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symbolToStockMap: SymbolToStockMap,
};
});
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function checkThatOrderExists(placeOrderRes?: boolean): void {
if (typeof placeOrderRes === "boolean") {
expect(placeOrderRes).toEqual(true);
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}
expect(StockMarket["Orders"][stock.symbol]).toHaveLength(1);
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}
function checkThatOrderExecuted(): void {
expect(StockMarket["Orders"][stock.symbol]).toHaveLength(0);
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}
it("should execute LONG Limit Buy orders when price <= order price", function () {
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const res = placeOrder(stock, 1e3, 9e3, OrderTypes.LimitBuy, PositionTypes.Long);
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checkThatOrderExists(res);
stock.changePrice(9e3);
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processOrders(stock, OrderTypes.LimitBuy, PositionTypes.Long, processOrdersRefs);
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checkThatOrderExecuted();
expect(stock.playerShares).toEqual(2e3);
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});
it("should execute SHORT Limit Buy Orders when price >= order price", function () {
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const res = placeOrder(stock, 1e3, 11e3, OrderTypes.LimitBuy, PositionTypes.Short);
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checkThatOrderExists(res);
stock.changePrice(11e3);
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processOrders(stock, OrderTypes.LimitBuy, PositionTypes.Short, processOrdersRefs);
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checkThatOrderExecuted();
expect(stock.playerShortShares).toEqual(2e3);
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});
it("should execute LONG Limit Sell Orders when price >= order price", function () {
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const res = placeOrder(stock, 1e3, 11e3, OrderTypes.LimitSell, PositionTypes.Long);
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checkThatOrderExists(res);
stock.changePrice(11e3);
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processOrders(stock, OrderTypes.LimitSell, PositionTypes.Long, processOrdersRefs);
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checkThatOrderExecuted();
expect(stock.playerShares).toEqual(0);
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});
it("should execute SHORT Limit Sell Orders when price <= order price", function () {
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const res = placeOrder(stock, 1e3, 9e3, OrderTypes.LimitSell, PositionTypes.Short);
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checkThatOrderExists(res);
stock.changePrice(9e3);
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processOrders(stock, OrderTypes.LimitSell, PositionTypes.Short, processOrdersRefs);
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checkThatOrderExecuted();
expect(stock.playerShortShares).toEqual(0);
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});
it("should execute LONG Stop Buy Orders when price >= order price", function () {
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const res = placeOrder(stock, 1e3, 11e3, OrderTypes.StopBuy, PositionTypes.Long);
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checkThatOrderExists(res);
stock.changePrice(11e3);
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processOrders(stock, OrderTypes.StopBuy, PositionTypes.Long, processOrdersRefs);
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checkThatOrderExecuted();
expect(stock.playerShares).toEqual(2e3);
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});
it("should execute SHORT Stop Buy Orders when price <= order price", function () {
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const res = placeOrder(stock, 1e3, 9e3, OrderTypes.StopBuy, PositionTypes.Short);
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checkThatOrderExists(res);
stock.changePrice(9e3);
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processOrders(stock, OrderTypes.StopBuy, PositionTypes.Short, processOrdersRefs);
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checkThatOrderExecuted();
expect(stock.playerShortShares).toEqual(2e3);
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});
it("should execute LONG Stop Sell Orders when price <= order price", function () {
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const res = placeOrder(stock, 1e3, 9e3, OrderTypes.StopSell, PositionTypes.Long);
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checkThatOrderExists(res);
stock.changePrice(9e3);
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processOrders(stock, OrderTypes.StopSell, PositionTypes.Long, processOrdersRefs);
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checkThatOrderExecuted();
expect(stock.playerShares).toEqual(0);
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});
it("should execute SHORT Stop Sell Orders when price >= order price", function () {
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const res = placeOrder(stock, 1e3, 11e3, OrderTypes.StopSell, PositionTypes.Short);
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checkThatOrderExists(res);
stock.changePrice(11e3);
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processOrders(stock, OrderTypes.StopSell, PositionTypes.Short, processOrdersRefs);
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checkThatOrderExecuted();
expect(stock.playerShortShares).toEqual(0);
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});
it("should execute immediately if their conditions are satisfied", function () {
placeOrder(stock, 1e3, 11e3, OrderTypes.LimitBuy, PositionTypes.Long);
checkThatOrderExecuted();
expect(stock.playerShares).toEqual(2e3);
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});
});
});
// TODO
describe("Player Influencing", function () {
const server = new Server({
hostname: "mockserver",
moneyAvailable: 1e6,
organizationName: "MockStock",
});
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const company = new Company({
name: "MockStock",
info: "",
companyPositions: {},
expMultiplier: 1,
salaryMultiplier: 1,
jobStatReqOffset: 1,
});
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beforeEach(function () {
expect(initStockMarket).not.toThrow();
expect(initSymbolToStockMap).not.toThrow();
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StockMarket[stock.name] = stock;
});
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describe("influenceStockThroughServerHack()", function () {
it("should decrease a stock's second-order forecast when all of its money is hacked", function () {
const oldSecondOrderForecast = stock.otlkMagForecast;
influenceStockThroughServerHack(server, server.moneyMax);
expect(stock.otlkMagForecast).toEqual(oldSecondOrderForecast - forecastForecastChangeFromHack);
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});
it("should not decrease the stock's second-order forecast when no money is stolen", function () {
const oldSecondOrderForecast = stock.otlkMagForecast;
influenceStockThroughServerHack(server, 0);
expect(stock.otlkMagForecast).toEqual(oldSecondOrderForecast);
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});
});
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describe("influenceStockThroughServerGrow()", function () {
it("should increase a stock's second-order forecast when all of its money is grown", function () {
const oldSecondOrderForecast = stock.otlkMagForecast;
influenceStockThroughServerGrow(server, server.moneyMax);
expect(stock.otlkMagForecast).toEqual(oldSecondOrderForecast + forecastForecastChangeFromHack);
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});
it("should not increase the stock's second-order forecast when no money is grown", function () {
const oldSecondOrderForecast = stock.otlkMagForecast;
influenceStockThroughServerGrow(server, 0);
expect(stock.otlkMagForecast).toEqual(oldSecondOrderForecast);
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});
});
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describe("influenceStockThroughCompanyWork()", function () {
it("should increase the server's second order forecast", function () {
const oldSecondOrderForecast = stock.otlkMagForecast;
// Use 1e3 for numCycles to force a change
// (This may break later if numbers are rebalanced);
influenceStockThroughCompanyWork(company, 1, 500);
expect(stock.otlkMagForecast).toEqual(oldSecondOrderForecast + forecastForecastChangeFromCompanyWork);
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});
it("should be affected by performanceMult", function () {
const oldSecondOrderForecast = stock.otlkMagForecast;
// Use 1e3 for numCycles to force a change
// (This may break later if numbers are rebalanced);
influenceStockThroughCompanyWork(company, 4, 1e3);
expect(stock.otlkMagForecast).toEqual(oldSecondOrderForecast + 4 * forecastForecastChangeFromCompanyWork);
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});
});
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});
});