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.
72 lines
2.5 KiB
TypeScript
72 lines
2.5 KiB
TypeScript
import { describe, test, expect } from "vitest";
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import { resolveShippingCostCents, getNextShippingTier, FALLBACK_SHIPPING_CENTS } from "./shipping-calc";
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const tiers = [
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{ minQuantity: 0, maxQuantity: 3, priceCents: 700 },
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{ minQuantity: 4, maxQuantity: 9, priceCents: 850 },
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{ minQuantity: 10, maxQuantity: null, priceCents: 1100 },
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];
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describe("resolveShippingCostCents", () => {
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test("returns 0 when the cart is empty", () => {
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expect(resolveShippingCostCents(tiers, 0)).toBe(0);
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});
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test("falls back to a fixed price when no tiers are configured", () => {
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expect(resolveShippingCostCents([], 5)).toBe(FALLBACK_SHIPPING_CENTS);
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});
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test("picks the lowest tier for a small quantity", () => {
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expect(resolveShippingCostCents(tiers, 2)).toBe(700);
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});
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test("picks the middle tier at its lower boundary", () => {
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expect(resolveShippingCostCents(tiers, 4)).toBe(850);
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});
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test("picks the middle tier at its upper boundary", () => {
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expect(resolveShippingCostCents(tiers, 9)).toBe(850);
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});
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test("applies the open-ended top tier for large quantities", () => {
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expect(resolveShippingCostCents(tiers, 500)).toBe(1100);
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});
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test("uses the topmost tier when the quantity exceeds every defined tier", () => {
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const closedTiers = [{ minQuantity: 0, maxQuantity: 3, priceCents: 700 }];
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expect(resolveShippingCostCents(closedTiers, 50)).toBe(700);
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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(resolveShippingCostCents(shuffled, 4)).toBe(850);
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});
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});
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describe("getNextShippingTier", () => {
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test("returns null for an empty cart", () => {
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expect(getNextShippingTier(tiers, 0)).toBeNull();
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});
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test("returns null when no tiers are configured", () => {
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expect(getNextShippingTier([], 2)).toBeNull();
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});
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test("returns null when already in the topmost open-ended tier", () => {
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expect(getNextShippingTier(tiers, 15)).toBeNull();
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});
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test("reports units and price of the next tier", () => {
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expect(getNextShippingTier(tiers, 2)).toEqual({ unitsUntilNext: 2, priceCents: 850 });
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});
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test("reports 1 unit remaining right below a boundary", () => {
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expect(getNextShippingTier(tiers, 3)).toEqual({ unitsUntilNext: 1, priceCents: 850 });
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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(getNextShippingTier(shuffled, 9)).toEqual({ unitsUntilNext: 1, priceCents: 1100 });
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});
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});
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