Nick Szaunig
c7927f2883
Vollstaendige Next.js/Prisma-E-Commerce-Anwendung fuer eine Imkerei: Shop, Warenkorb, Stripe-Checkout, Kundenkonto mit 2FA, Admin-Bereich (Produkte, Ernten, Chargen, Bestellungen, Gutscheine, admin-editierbare Website-Inhalte), i18n (DE/EN), Rate-Limiting/CSP/Audit-Log-Haertung, PostgreSQL- und MySQL-Unterstuetzung ueber austauschbare Prisma- Treiber-Adapter, Unit-/Komponenten-/E2E-Tests.
49 lines
1.7 KiB
TypeScript
49 lines
1.7 KiB
TypeScript
import { describe, test, expect } from "vitest";
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import { resolveBulkDiscount, getNextBulkDiscountTier } from "./bulk-discount-calc";
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const tiers = [
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{ code: "MENGE10", minQuantity: 3, percent: 10 },
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{ code: "MENGE15", minQuantity: 6, percent: 15 },
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];
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describe("resolveBulkDiscount", () => {
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test("returns null when no tier is configured", () => {
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expect(resolveBulkDiscount([], 5)).toBeNull();
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});
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test("returns null below the lowest threshold", () => {
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expect(resolveBulkDiscount(tiers, 2)).toBeNull();
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});
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test("picks the lowest tier at its boundary", () => {
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expect(resolveBulkDiscount(tiers, 3)).toEqual({ code: "MENGE10", minQuantity: 3, percent: 10 });
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});
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test("picks the higher tier once its threshold is reached", () => {
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expect(resolveBulkDiscount(tiers, 6)).toEqual({ code: "MENGE15", minQuantity: 6, percent: 15 });
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});
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test("is unaffected by tier input order", () => {
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const shuffled = [...tiers].reverse();
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expect(resolveBulkDiscount(shuffled, 6)).toEqual({ code: "MENGE15", minQuantity: 6, percent: 15 });
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});
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});
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describe("getNextBulkDiscountTier", () => {
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test("returns null when no tier is configured", () => {
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expect(getNextBulkDiscountTier([], 1)).toBeNull();
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});
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test("returns null once the highest tier is reached", () => {
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expect(getNextBulkDiscountTier(tiers, 6)).toBeNull();
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});
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test("reports units and percent of the next tier", () => {
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expect(getNextBulkDiscountTier(tiers, 1)).toEqual({ unitsUntilNext: 2, percent: 10 });
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});
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test("reports the tier after the currently active one", () => {
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expect(getNextBulkDiscountTier(tiers, 3)).toEqual({ unitsUntilNext: 3, percent: 15 });
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});
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});
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