TDD 관련 내용 추

Author: chhs2131

tdd-example/build.gradle

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+plugins {
+    id 'java'
+    id 'org.springframework.boot' version '3.2.2'
+    id 'io.spring.dependency-management' version '1.1.4'
+}
+
+group = 'org.example'
+version = '0.0.1-SNAPSHOT'
+
+java {
+    sourceCompatibility = '17'
+}
+
+configurations {
+    compileOnly {
+        extendsFrom annotationProcessor
+    }
+}
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
+    implementation 'org.springframework.boot:spring-boot-starter-web'
+    compileOnly 'org.projectlombok:lombok'
+    runtimeOnly 'com.h2database:h2'
+    annotationProcessor 'org.projectlombok:lombok'
+    testImplementation 'org.springframework.boot:spring-boot-starter-test'
+    testImplementation 'io.rest-assured:rest-assured'  // spring-boot 3는 rest-assured 5 이상을 사용해야함
+    implementation "com.google.guava:guava:33.0.0-jre"
+
+    // testImplementation 'io.rest-assured:rest-assured:4.4.0'
+}
+
+tasks.named('test') {
+    useJUnitPlatform()
+}

tdd-example/src/history/v1/AddProductRequest.java

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+package org.example.tddexample.product;
+
+import org.springframework.util.Assert;
+
+record AddProductRequest(String name, int price, Discountpolicy discountpolicy) {
+    AddProductRequest {
+        Assert.hasText(name, "상품명은 필수입니다.");
+        Assert.isTrue(price > 0, "상품 가격은 0보다 커야 합니다.");
+        Assert.notNull(discountpolicy, "할인정책은 필수입니다.");
+    }
+}

tdd-example/src/history/v1/Discountpolicy.java

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+package org.example.tddexample.product;
+
+enum Discountpolicy {
+    NONE
+}

tdd-example/src/history/v1/Product.java

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+package org.example.tddexample.product;
+
+import org.springframework.util.Assert;
+
+class Product {
+    private Long id;
+    private final String name;
+    private final int price;
+    private final Discountpolicy discountpolicy;
+
+    Product(String name, int price, Discountpolicy discountpolicy) {
+        Assert.hasText(name, "상품명은 필수입니다.");
+        Assert.isTrue(price > 0, "상품 가격은 0보다 커야 합니다.");
+        Assert.notNull(discountpolicy, "할인 정책은 필수입니다.");
+
+        this.name = name;
+        this.price = price;
+        this.discountpolicy = discountpolicy;
+    }
+
+    public void assignId(final Long id) {
+        this.id = id;
+    }
+
+
+    public Long getId() {
+        return id;
+    }
+}

tdd-example/src/history/v1/ProductAdapter.java

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+package org.example.tddexample.product;
+
+class ProductAdapter implements ProductPort {
+    private final ProductRepository productRepository;
+
+    ProductAdapter(ProductRepository productRepository) {
+        this.productRepository = productRepository;
+    }
+
+    @Override
+    public void save(final Product product) {
+        productRepository.save(product);
+    }
+}

tdd-example/src/history/v1/ProductPort.java

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+package org.example.tddexample.product;
+
+interface ProductPort {
+    void save(final Product product);
+}

tdd-example/src/history/v1/ProductRepository.java

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+package org.example.tddexample.product;
+
+import java.util.HashMap;
+import java.util.Map;
+
+class ProductRepository {
+    private Map<Long, Product> persistence = new HashMap<>();
+    private Long sequence = 0L;
+
+    public void save(final Product product) {
+        product.assignId(++sequence);
+        persistence.put(product.getId(), product);
+    }
+}

tdd-example/src/history/v1/ProductService.java

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+package org.example.tddexample.product;
+
+class ProductService {
+    private final ProductPort productPort;
+
+    ProductService(ProductPort productPort) {
+        this.productPort = productPort;
+    }
+
+    public void addProduct(final AddProductRequest request) {
+        final Product product = new Product(request.name(), request.price(), request.discountpolicy());
+        productPort.save(product);
+    }
+}

tdd-example/src/history/v1/ProductServiceTest.java

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+package org.example.tddexample.product;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+class ProductServiceTest {
+    private ProductService productService;
+    private ProductPort productPort;
+    private ProductRepository productRepository;
+
+    @BeforeEach
+    void setup() {
+        productRepository = new ProductRepository();
+        productPort = new ProductAdapter(productRepository);
+        productService = new ProductService(productPort);
+    }
+
+    @Test
+    void 상품등록() {
+        final AddProductRequest request = 상품등록요청_생성();
+
+        productService.addProduct(request);
+    }
+
+    private static AddProductRequest 상품등록요청_생성() {
+        final String name = "상품명";
+        final int price = 1000;
+        final Discountpolicy policy = Discountpolicy.NONE;
+        final AddProductRequest request = new AddProductRequest(name, price, policy);
+        return request;
+    }
+}

tdd-example/src/history/v2/AddProductRequest.java

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+package org.example.tddexample.product;
+
+import org.springframework.util.Assert;
+
+record AddProductRequest(String name, int price, Discountpolicy discountpolicy) {
+    AddProductRequest {
+        Assert.hasText(name, "상품명은 필수입니다.");
+        Assert.isTrue(price > 0, "상품 가격은 0보다 커야 합니다.");
+        Assert.notNull(discountpolicy, "할인정책은 필수입니다.");
+    }
+}