import { readFile } from "node:fs/promises";
import { describe, expect, it } from "vitest";

describe("Go billing core compatibility fixture", () => {
  it("freezes money, errors, idempotency, quote ordering, and exemptions", async () => {
    const fixture = JSON.parse(await readFile("contracts/billing/core-v1.json", "utf8"));
    expect(fixture).toMatchObject({
      currency: "CNY", moneyUnit: "fen",
      statuses: { insufficientBalance: 402, idempotencyConflict: 409 },
      idempotencyKeys: { charge: "job-charge:{jobId}", refund: "job-refund:{jobId}" },
      quote: { quantityRounding: "ceil", tiedWinner: "ambiguity_error", tierStandardFactors: "multiply", tierMarkupMultipliers: "maximum" },
      exemptions: { billingDisabled: true, mockProvider: true, platformSuperAdminQuota: true }
    });
  });
});