Delete hexagonal directory
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JoannaaKL
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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<parent>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-parent</artifactId>
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<version>2.5.3</version>
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<relativePath/> <!-- lookup parent from repository -->
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</parent>
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<groupId>com.example</groupId>
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<artifactId>demo</artifactId>
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<version>0.0.1-SNAPSHOT</version>
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<name>demo</name>
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<description>Demo project for Spring Boot</description>
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<properties>
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<java.version>11</java.version>
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</properties>
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<dependencies>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-data-jpa</artifactId>
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</dependency>
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<dependency>
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<groupId>com.h2database</groupId>
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<artifactId>h2</artifactId>
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<scope>runtime</scope>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-web</artifactId>
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</dependency>
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<dependency>
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<groupId>org.projectlombok</groupId>
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<artifactId>lombok</artifactId>
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<optional>true</optional>
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</dependency>
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<dependency>
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<groupId>javax.xml.bind</groupId>
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<artifactId>jaxb-api</artifactId>
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<version>2.3.0</version>
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</dependency>
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<dependency>
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<groupId>org.junit.jupiter</groupId>
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<artifactId>junit-jupiter-engine</artifactId>
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<version>5.7.2</version>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-maven-plugin</artifactId>
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<configuration>
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<excludes>
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<exclude>
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<groupId>org.projectlombok</groupId>
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<artifactId>lombok</artifactId>
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</exclude>
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</excludes>
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</configuration>
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</plugin>
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</plugins>
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</build>
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</project>
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package com.baeldung.hexagonal;
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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@SpringBootApplication
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public class Application {
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public static void main(String[] args) {
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SpringApplication.run(Application.class, args);
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}
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}
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package com.baeldung.hexagonal.adapter.in;
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import lombok.Data;
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@Data
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class ItemTransportObject {
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private String name;
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private Integer quantity;
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private String category;
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}
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package com.baeldung.hexagonal.adapter.in;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.web.bind.annotation.*;
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import com.baeldung.hexagonal.domain.ShoppingCartService;
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@RestController
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@RequestMapping("/shopping-cart")
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public class ShoppingCartController {
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@Autowired
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ShoppingCartService shoppingCartService;
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@GetMapping
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public Float getTotalCartValue() {
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return shoppingCartService.getTotalCartValue();
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}
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@PostMapping()
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public void addItem(@RequestBody ItemTransportObject item) {
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shoppingCartService.addItem(item.getName(), item.getQuantity());
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}
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}
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package com.baeldung.hexagonal.adapter.out;
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import javax.persistence.Column;
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import javax.persistence.Entity;
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import javax.persistence.Id;
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import com.baeldung.hexagonal.domain.CartItem;
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import lombok.Data;
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@Entity
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@Data
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public class Product {
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@Id
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public final Integer id;
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@Column
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public final String name;
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@Column
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public final Float price;
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public CartItem toItem() {
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return new CartItem(name, price);
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}
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}
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package com.baeldung.hexagonal.adapter.out;
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import org.springframework.data.repository.CrudRepository;
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import org.springframework.stereotype.Repository;
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import com.baeldung.hexagonal.domain.ports.ProductRepository;
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@Repository
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public interface ProductCrudRepository extends CrudRepository<Product, Integer>, ProductRepository {
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Product findByName(String name);
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}
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package com.baeldung.hexagonal.domain;
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import lombok.Data;
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import lombok.NonNull;
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@Data
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public class CartItem {
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@NonNull
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private final String name;
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private final Float price;
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}
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package com.baeldung.hexagonal.domain;
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import java.util.Map;
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import lombok.RequiredArgsConstructor;
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@RequiredArgsConstructor
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class ShoppingCart {
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private final Map<CartItem, Integer> itemToQuantity;
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Float getTotalCartValue() {
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return itemToQuantity.entrySet()
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.stream()
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.map(item -> item.getKey()
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.getPrice() * item.getValue())
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.reduce(0f, Float::sum);
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}
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void addItem(CartItem cartItem, Integer quantity) {
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if (quantity < 0)
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throw new IllegalArgumentException("Quantity should not be negative.");
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itemToQuantity.put(cartItem, itemToQuantity.getOrDefault(cartItem, 0) + quantity);
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}
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}
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package com.baeldung.hexagonal.domain;
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public interface ShoppingCartService {
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Float getTotalCartValue();
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void addItem(String name, Integer quantity);
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}
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package com.baeldung.hexagonal.domain;
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import java.util.HashMap;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Service;
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import com.baeldung.hexagonal.adapter.out.Product;
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import com.baeldung.hexagonal.domain.ports.ProductRepository;
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@Service
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public class SimpleShoppingCartService implements ShoppingCartService {
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private final ShoppingCart shoppingCart;
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@Autowired
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ProductRepository productRepository;
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public SimpleShoppingCartService() {
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this.shoppingCart = new ShoppingCart(new HashMap<>());
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}
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public Float getTotalCartValue() {
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return shoppingCart.getTotalCartValue();
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}
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public void addItem(String name, Integer quantity) {
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Product product = productRepository.findByName(name);
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shoppingCart.addItem(product.toItem(), quantity);
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}
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}
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package com.baeldung.hexagonal.domain.ports;
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import com.baeldung.hexagonal.adapter.out.Product;
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public interface ProductRepository {
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Product findByName(String name);
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}
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spring.datasource.url=jdbc:h2:mem:testdb
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spring.datasource.driverClassName=org.h2.Driver
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spring.datasource.username=sa
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spring.datasource.password=password
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spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
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package com.baeldung.hexagonal.domain;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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import java.util.HashMap;
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import java.util.Map;
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import org.junit.jupiter.api.Test;
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class ShoppingCartTest {
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@Test
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void givenNonemptyShoppingCart_whenGetTotalCartValueCalled_thenShouldCalculateCorrectly() {
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// given
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Map<CartItem, Integer> items = new HashMap<>();
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items.put(new CartItem("Cheese", 1.5f), 2);
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items.put(new CartItem("Lemon", 2f), 5);
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ShoppingCart cart = new ShoppingCart(items);
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// when
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Float totalCartValue = cart.getTotalCartValue();
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// then
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assertEquals(totalCartValue, 13f, 0);
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}
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}
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