[Order API TDD] JPA 적용하기

product-order-service/README.md

@@ -130,6 +130,8 @@ final UpdateProductRequest request = new UpdateProductRequest(name, price, disco
 
 **JPA 적용**
 
+> [JPA 적용하기]()
+
 ## 주문 결제 기능 구현하기
 
 **POJO**

product-order-service/src/main/java/com/example/productorderservice/order/Order.java

@@ -1,25 +1,28 @@
 package com.example.productorderservice.order;
 
 import com.example.productorderservice.product.Product;
+import jakarta.persistence.*;
+import lombok.AccessLevel;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
 import org.springframework.util.Assert;
 
+@Entity
+@Table(name = "orders")
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@Getter
 class Order {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Long id;
-    private final Product product;
-    private final int quantity;
+    @OneToOne
+    private Product product;
+    private int quantity;
 
     public Order(final Product product, final int quantity) {
         Assert.notNull(product, "상품은 필수입니다.");
         Assert.isTrue(quantity > 0, "수량은 0보다 커야 합니다.");
         this.product = product;
         this.quantity = quantity;
     }
-
-    public void assignId(final Long id) {
-        this.id = id;
-    }
-
-    public Long getId() {
-        return id;
-    }
 }

product-order-service/src/main/java/com/example/productorderservice/order/OrderRepository.java

@@ -1,17 +1,6 @@
 package com.example.productorderservice.order;
 
-import org.springframework.stereotype.Repository;
+import org.springframework.data.jpa.repository.JpaRepository;
 
-import java.util.HashMap;
-import java.util.Map;
-
-@Repository
-class OrderRepository {
-    private Map<Long, Order> persistence = new HashMap<>();
-    private Long sequance = 0L;
-
-    public void save(final Order order) {
-        order.assignId(++sequance);
-        persistence.put(order.getId(), order);
-    }
+interface OrderRepository extends JpaRepository<Order, Long> {
 }

product-order-service/src/test/java/com/example/productorderservice/order/OrderApiTest.java

@@ -2,12 +2,8 @@
 
 import com.example.productorderservice.product.ApiTest;
 import com.example.productorderservice.product.ProductSteps;
-import io.restassured.RestAssured;
-import io.restassured.response.ExtractableResponse;
-import io.restassured.response.Response;
 import org.junit.jupiter.api.Test;
 import org.springframework.http.HttpStatus;
-import org.springframework.http.MediaType;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
@@ -16,23 +12,13 @@ class OrderApiTest extends ApiTest {
     @Test
     void 상품주문() {
         ProductSteps.requestAddProduct(ProductSteps.getAddProductRequest());
-        final CreateOrderRequest request = getCreateOrderRequest();
+        final var request = OrderSteps.getCreateOrderRequest();
 
-        final ExtractableResponse<Response> response = RestAssured.given().log().all()
-                .contentType(MediaType.APPLICATION_JSON_VALUE)
-                .body(request)
-                .when()
-                .post("/orders")
-                .then()
-                .log().all().extract();
+        final var response = OrderSteps.requestCreateOrder(request);
 
         assertThat(response.statusCode()).isEqualTo(HttpStatus.CREATED.value());
     }
 
-    private static CreateOrderRequest getCreateOrderRequest() {
-        final long productId = 1L;
-        final int quantity = 2;
-        return new CreateOrderRequest(productId, quantity);
-    }
+
 
 }

product-order-service/src/test/java/com/example/productorderservice/order/OrderSteps.java

@@ -0,0 +1,24 @@
+package com.example.productorderservice.order;
+
+import io.restassured.RestAssured;
+import io.restassured.response.ExtractableResponse;
+import io.restassured.response.Response;
+import org.springframework.http.MediaType;
+
+public class OrderSteps {
+    public static final ExtractableResponse<Response> requestCreateOrder(final CreateOrderRequest request) {
+        return RestAssured.given().log().all()
+                .contentType(MediaType.APPLICATION_JSON_VALUE)
+                .body(request)
+                .when()
+                .post("/orders")
+                .then()
+                .log().all().extract();
+    }
+
+    public static final CreateOrderRequest getCreateOrderRequest() {
+        final long productId = 1L;
+        final int quantity = 2;
+        return new CreateOrderRequest(productId, quantity);
+    }
+}