EpicNext-Cms/src/actions/shop-rank.test.ts

import { beforeEach, describe, expect, it, vi } from "vitest";

const d = vi.hoisted(() => ({
	rows: [] as unknown[][],
	events: [] as string[],
	set: vi.fn(),
	execute: vi.fn(),
	audit: vi.fn(),
	synchronize: vi.fn(),
}));
vi.mock("server-only", () => ({}));
vi.mock("@/lib/auth", () => ({ auth: async () => ({ user: { id: 8 } }) }));
vi.mock("@/lib/rate-limit", () => ({
	clientIp: async () => "local",
	rateLimit: async () => ({ ok: true }),
}));
vi.mock("@/lib/services/paypal", () => ({ creditsPerUnit: () => 10 }));
vi.mock("@/lib/services/send-currency", () => ({
	currencyDb: {},
	sendCurrency: vi.fn(),
}));
vi.mock("@/lib/services/rcon", () => ({ rcon: { giveBadge: vi.fn() } }));
vi.mock("@/lib/services/audit", () => ({ logAudit: d.audit }));
vi.mock("next/cache", () => ({ revalidatePath: vi.fn() }));
vi.mock("next/navigation", () => ({
	redirect: (url: string) => {
		throw Object.assign(new Error(url), { digest: "NEXT_REDIRECT" });
	},
}));
vi.mock("@/lib/db", async (importOriginal) => {
	const actual = await importOriginal<typeof import("@/lib/db")>();
	const facade = {
		execute: d.execute,
		select: () => ({
			from: () => ({
				where: () => ({
					limit: async () => d.rows.shift() ?? [],
					for: async () => {
						d.events.push("user-lock");
						return d.rows.shift() ?? [];
					},
				}),
			}),
		}),
		update: () => ({ set: d.set }),
	};
	return {
		...actual,
		db: {
			...facade,
			transaction: async (run: (tx: typeof facade) => unknown) => {
				const result = await run(facade);
				d.events.push("commit");
				return result;
			},
		},
	};
});
vi.mock("@/lib/services/rank-assignment", async (importOriginal) => ({
	...(await importOriginal<typeof import("@/lib/services/rank-assignment")>()),
	rankAssignmentCoordinator: { synchronize: d.synchronize },
}));

import { buyShopArticle } from "./shop";

function input() {
	const data = new FormData();
	data.set("articleId", "1");
	data.set("categoryId", "1");
	return data;
}
beforeEach(() => {
	vi.clearAllMocks();
	d.rows.length = 0;
	d.events.length = 0;
	d.rows.push(
		[
			{
				id: 1,
				name: "Member",
				costs: 100,
				giveRank: 4,
				badges: "",
				credits: 0,
				duckets: 0,
				diamonds: 0,
			},
		],
		[{ credits: 100, rank: 2 }],
	);
	d.execute.mockImplementation(async () => {
		d.events.push("rank-lock");
		return [[{ id: 4 }]];
	});
	d.set.mockImplementation(() => ({
		where: async () => {
			d.events.push("update");
		},
	}));
	d.audit.mockResolvedValue(undefined);
	d.synchronize.mockImplementation(async () => {
		d.events.push("delivery");
		return { status: "delivered", rank: 4 };
	});
});

describe("shop rank coordination", () => {
	it("locks rank before user, commits the purchase, then synchronizes", async () => {
		d.rows.push([{ credits: 100, rank: 2 }]);
		await expect(buyShopArticle(input())).rejects.toThrow("bought=1");
		expect(d.events).toEqual([
			"rank-lock",
			"user-lock",
			"update",
			"update",
			"commit",
			"delivery",
		]);
		expect(d.set).toHaveBeenCalledWith({ rank: 4 });
		expect(d.audit.mock.calls.map(([entry]) => entry.outcome)).toEqual([
			"intent",
			"success",
		]);
	});
	it("does not overwrite a newer staff promotion with the previously observed buyer rank", async () => {
		d.rows.push([{ credits: 100, rank: 6 }]);
		await expect(buyShopArticle(input())).rejects.toThrow("bought=1");
		expect(d.set).not.toHaveBeenCalledWith({ rank: 4 });
		expect(d.synchronize).not.toHaveBeenCalled();
	});
	it("does not charge when the configured package rank was deleted", async () => {
		d.execute.mockResolvedValueOnce([[]]);
		await expect(buyShopArticle(input())).rejects.toThrow("error=error");
		expect(d.set).not.toHaveBeenCalled();
		expect(d.synchronize).not.toHaveBeenCalled();
	});
	it("keeps a durable partial audit without turning a committed purchase into a retry", async () => {
		d.rows.push([{ credits: 100, rank: 2 }]);
		d.synchronize.mockResolvedValueOnce({ status: "pending", rank: 4 });
		await expect(buyShopArticle(input())).rejects.toThrow("bought=1");
		expect(d.audit).toHaveBeenLastCalledWith(
			expect.objectContaining({
				outcome: "partial",
				correlationId: expect.any(String),
			}),
		);
	});
});