import { describe, it, expect } from 'vitest';
import { splitCart, CartItem } from './checkout-split';

describe('Checkout Split Logic', () => {
  it('should place purchase items only into purchase group', () => {
    const cart: CartItem[] = [
      { billingInterval: 'one_time', selections: {} },
      { billingType: 'purchase', selections: {} }
    ];

    const { purchaseItems, subscriptionItems } = splitCart(cart);

    expect(purchaseItems.length).toBe(2);
    expect(subscriptionItems.length).toBe(0);
  });

  it('should place subscription items only into subscription group', () => {
    const cart: CartItem[] = [
      { billingInterval: 'monthly', selections: {} },
      { billingType: 'subscription', selections: {} }
    ];

    const { purchaseItems, subscriptionItems } = splitCart(cart);

    expect(purchaseItems.length).toBe(0);
    expect(subscriptionItems.length).toBe(2);
  });

  it('should split mixed cart into separate purchase and subscription groups', () => {
    const cart: CartItem[] = [
      { billingInterval: 'one_time', selections: {} },
      { billingInterval: 'monthly', selections: {} },
      { billingType: 'purchase', selections: {} },
      { billingType: 'subscription', selections: {} }
    ];

    const { purchaseItems, subscriptionItems } = splitCart(cart);

    expect(purchaseItems.length).toBe(2);
    expect(subscriptionItems.length).toBe(2);
  });
});