From 224320994fce57299dc6f2438571d6364ed8b0a2 Mon Sep 17 00:00:00 2001
From: creco-hanghae <creco.hanghae@gmail.com>
Date: Fri, 17 Jan 2025 09:58:51 +0900
Subject: [PATCH] =?UTF-8?q?test:=20=EC=9C=A0=ED=8B=B8=20=ED=95=A8=EC=88=98?=
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---
 src/advanced/__tests__/advanced.test.tsx      | 32 ++++++++++++++++++-
 .../components/AdminPage/AdminPage.tsx        |  7 ++--
 src/refactoring/models/product.ts             | 11 +++++++
 3 files changed, 45 insertions(+), 5 deletions(-)
 create mode 100644 src/refactoring/models/product.ts

diff --git a/src/advanced/__tests__/advanced.test.tsx b/src/advanced/__tests__/advanced.test.tsx
index d365f1a0..f079e20c 100644
--- a/src/advanced/__tests__/advanced.test.tsx
+++ b/src/advanced/__tests__/advanced.test.tsx
@@ -4,6 +4,7 @@ import { act, fireEvent, render, screen, within } from '@testing-library/react';
 import { CartPage } from '../../refactoring/components/CartPage';
 import { AdminPage } from "../../refactoring/components/AdminPage/AdminPage";
 import { Coupon, Product } from '../../types';
+import { addDiscountToProduct } from "../../refactoring/models/product";
 
 const mockProducts: Product[] = [
   {
@@ -233,7 +234,36 @@ describe('advanced > ', () => {
 
   describe('자유롭게 작성해보세요.', () => {
     test('새로운 유틸 함수를 만든 후에 테스트 코드를 작성해서 실행해보세요', () => {
-      expect(true).toBe(false);
+      expect(addDiscountToProduct({
+        id: '1',
+        name: '내 상품',
+        price: 1000,
+        stock: 10,
+        discounts: [{
+          quantity: 1,
+          rate: 0.05
+        }],
+      }, {
+        quantity: 5,
+        rate: 0.1,
+      })).toMatchObject(
+        {
+          "discounts": [
+            {
+              "quantity": 1,
+              "rate": 0.05,
+            },
+            {
+              "quantity": 5,
+              "rate": 0.1,
+            },
+          ],
+          "id": "1",
+          "name": "내 상품",
+          "price": 1000,
+          "stock": 10,
+        }
+      )
     })
 
     test('새로운 hook 함수르 만든 후에 테스트 코드를 작성해서 실행해보세요', () => {
diff --git a/src/refactoring/components/AdminPage/AdminPage.tsx b/src/refactoring/components/AdminPage/AdminPage.tsx
index 8b74caae..6ecfff7d 100644
--- a/src/refactoring/components/AdminPage/AdminPage.tsx
+++ b/src/refactoring/components/AdminPage/AdminPage.tsx
@@ -4,6 +4,7 @@ import { Container, Title } from '../Styled.tsx';
 import { Section } from '../Section.tsx';
 import { CouponManagement } from './CouponManagement.tsx';
 import { ProductManagement } from './ProductManagement.tsx';
+import { addDiscountToProduct } from '../../models/product.ts';
 
 interface Props {
   products: Product[];
@@ -84,10 +85,8 @@ export const AdminPage = ({ products, coupons, onProductUpdate, onProductAdd, on
   const handleAddDiscount = (productId: string) => {
     const updatedProduct = products.find(p => p.id === productId);
     if (updatedProduct && editingProduct) {
-      const newProduct = {
-        ...updatedProduct,
-        discounts: [...updatedProduct.discounts, newDiscount]
-      };
+      const newProduct = addDiscountToProduct(updatedProduct, newDiscount);
+
       onProductUpdate(newProduct);
       setEditingProduct(newProduct);
       setNewDiscount({ quantity: 0, rate: 0 });
diff --git a/src/refactoring/models/product.ts b/src/refactoring/models/product.ts
new file mode 100644
index 00000000..c90eb5d6
--- /dev/null
+++ b/src/refactoring/models/product.ts
@@ -0,0 +1,11 @@
+import { Product, Discount } from "../../types";
+
+export function addDiscountToProduct(
+  product: Product,
+  discount: Discount
+): Product {
+  return {
+    ...product,
+    discounts: [...product.discounts, discount],
+  };
+}
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