64 lines
2.6 KiB
TypeScript
64 lines
2.6 KiB
TypeScript
import { content } from "@deadhead/content";
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import { beforeAll, describe, expect, it } from "vitest";
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import { formatFuelShares, fuelShares, type FuelShare } from "../balance/fuel-share";
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import { checkRoute, fuelPriceAt, legFuel, routeDistance } from "../src/index";
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const loc = (id: string) => content.location(id)!;
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let rows: FuelShare[];
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beforeAll(() => {
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rows = fuelShares(content);
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});
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describe("fuel-to-payout check (CR-018 Step 18.1, decision 0.5.110)", () => {
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it("reports every purchasable ship on every route it can fly", () => {
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const models = content.shipModels.filter((m) => m.purchasable);
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expect(new Set(rows.map((r) => r.modelId))).toEqual(new Set(models.map((m) => m.id)));
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for (const row of rows) {
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const model = content.shipModel(row.modelId)!;
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expect(checkRoute(model, loc(row.originId), loc(row.destinationId), content.config).ok).toBe(
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true,
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);
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expect(row.contracts).toBeGreaterThan(0);
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}
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// Every Earth–Moon leg is flown by every purchasable ship, and boards always offer it.
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for (const model of models) {
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expect(
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rows.some(
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(r) => r.modelId === model.id && r.originId === "earth" && r.destinationId === "moon",
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),
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).toBe(true);
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}
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});
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it("prices a leg's fuel at the origin and divides by the median fitting payout", () => {
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const row = rows.find(
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(r) => r.modelId === "courier" && r.originId === "earth" && r.destinationId === "moon",
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)!;
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const courier = content.shipModel("courier")!;
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const fuel =
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legFuel(courier, loc("earth"), routeDistance(loc("earth"), loc("moon")), content.config) *
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fuelPriceAt(loc("earth"), content.config);
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expect(row.fuelCost).toBeCloseTo(fuel, 9);
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expect(row.share).toBeCloseTo(row.fuelCost / row.medianPayout, 12);
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expect(row.medianPayout).toBeGreaterThan(0);
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});
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it("keeps fuel at most 25% of the median payout on every route but the Clipper's Mars → Earth (Step 18.2)", () => {
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// One price can't put every row in 15–25% (user decision, CR-018): only the top is gated.
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// Few Mars → Earth jobs are small enough for the Clipper's 30 t hold, so their median is low.
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const over = rows
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.filter((r) => r.share > 0.25)
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.map((r) => `${r.modelId} ${r.originId} → ${r.destinationId}`);
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expect(over).toEqual(["clipper mars → earth"]);
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});
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it("reports the share for each ship and route as a table", () => {
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const table = formatFuelShares(rows).split("\n");
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expect(table).toHaveLength(rows.length + 1);
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expect(
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table.find((line) => line.startsWith("courier") && line.includes("earth → moon")),
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).toMatch(/\d+\.\d%$/);
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});
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});
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