BAEL-11: Renamed project to feign-client.
This commit is contained in:
Christian Raedel
slavisa-baeldung
parent
674c783886
commit
38eb1a5f45
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## Feign Hypermedia Client ##
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This is the implementation of a [spring-hypermedia-api][1] client using Feign.
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[1]: https://github.com/eugenp/spring-hypermedia-api
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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.baeldung.feign</groupId>
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<artifactId>feign-hypermedia-client</artifactId>
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<version>1.0.0-SNAPSHOT</version>
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<parent>
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<groupId>com.baeldung</groupId>
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<artifactId>parent-modules</artifactId>
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<version>1.0.0-SNAPSHOT</version>
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<relativePath>..</relativePath>
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</parent>
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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</properties>
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<dependencies>
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<dependency>
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<groupId>io.github.openfeign</groupId>
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<artifactId>feign-core</artifactId>
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<version>9.3.1</version>
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</dependency>
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<dependency>
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<groupId>io.github.openfeign</groupId>
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<artifactId>feign-okhttp</artifactId>
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<version>9.3.1</version>
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</dependency>
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<dependency>
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<groupId>io.github.openfeign</groupId>
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<artifactId>feign-gson</artifactId>
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<version>9.3.1</version>
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</dependency>
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<dependency>
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<groupId>io.github.openfeign</groupId>
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<artifactId>feign-slf4j</artifactId>
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<version>9.3.1</version>
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</dependency>
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<dependency>
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<groupId>org.slf4j</groupId>
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<artifactId>slf4j-api</artifactId>
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<version>1.7.21</version>
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</dependency>
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<dependency>
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<groupId>org.apache.logging.log4j</groupId>
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<artifactId>log4j-core</artifactId>
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<version>2.6.2</version>
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</dependency>
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<dependency>
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<groupId>org.apache.logging.log4j</groupId>
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<artifactId>log4j-slf4j-impl</artifactId>
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<version>2.6.2</version>
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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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<version>1.16.10</version>
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<scope>provided</scope>
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</dependency>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<version>4.12</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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<pluginManagement>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<version>3.5.1</version>
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<configuration>
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<source>1.8</source>
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<target>1.8</target>
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</configuration>
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</plugin>
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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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<version>1.4.0.RELEASE</version>
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</plugin>
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</plugins>
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</pluginManagement>
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</build>
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</project>
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package com.baeldung.feign;
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import com.baeldung.feign.clients.BookClient;
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import feign.Feign;
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import feign.Logger;
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import feign.gson.GsonDecoder;
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import feign.gson.GsonEncoder;
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import feign.okhttp.OkHttpClient;
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import feign.slf4j.Slf4jLogger;
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import lombok.Getter;
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@Getter
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public class Controller {
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private BookClient bookClient = createClient(BookClient.class,
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"http://localhost:8081/api/books");
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private static <T> T createClient(Class<T> type, String uri) {
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return Feign.builder()
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.client(new OkHttpClient())
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.encoder(new GsonEncoder())
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.decoder(new GsonDecoder())
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.logger(new Slf4jLogger(type))
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.logLevel(Logger.Level.FULL)
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.target(type, uri);
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}
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}
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package com.baeldung.feign.clients;
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import com.baeldung.feign.models.Book;
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import com.baeldung.feign.models.BookResource;
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import feign.Headers;
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import feign.Param;
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import feign.RequestLine;
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import java.util.List;
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public interface BookClient {
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@RequestLine("GET /{isbn}")
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BookResource findByIsbn(@Param("isbn") String isbn);
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@RequestLine("GET")
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List<BookResource> findAll();
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@RequestLine("POST")
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@Headers("Content-Type: application/json")
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void create(Book book);
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}
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package com.baeldung.feign.models;
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import lombok.AllArgsConstructor;
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import lombok.Data;
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import lombok.NoArgsConstructor;
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import lombok.ToString;
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@Data
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@ToString
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@NoArgsConstructor
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@AllArgsConstructor
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public class Book {
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private String isbn;
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private String author;
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private String title;
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private String synopsis;
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private String language;
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}
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package com.baeldung.feign.models;
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import lombok.AllArgsConstructor;
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import lombok.Data;
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import lombok.NoArgsConstructor;
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import lombok.ToString;
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@Data
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@ToString
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@NoArgsConstructor
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@AllArgsConstructor
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public class BookResource {
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private Book book;
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}
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@ -1,14 +0,0 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<Configuration status="WARN">
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<Appenders>
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<Console name="Console" target="SYSTEM_OUT">
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<PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36}:%n[+] %msg%n"/>
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</Console>
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</Appenders>
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<Loggers>
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<Root level="debug">
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<AppenderRef ref="Console"/>
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</Root>
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</Loggers>
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</Configuration>
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@ -1,54 +0,0 @@
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package com.baeldung.feign.clients;
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import com.baeldung.feign.Controller;
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import com.baeldung.feign.models.Book;
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import com.baeldung.feign.models.BookResource;
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import lombok.extern.slf4j.Slf4j;
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import org.junit.Assert;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import org.junit.runners.JUnit4;
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import java.util.List;
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import java.util.UUID;
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import java.util.stream.Collectors;
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import static org.hamcrest.CoreMatchers.*;
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import static org.junit.Assert.assertThat;
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import static org.junit.Assert.assertTrue;
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@Slf4j
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@RunWith(JUnit4.class)
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public class BookClientTest {
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private Controller controller = new Controller();
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@Test
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public void givenBookClient_shouldRunSuccessfully() throws Exception {
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BookClient bookClient = controller.getBookClient();
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List<Book> books = bookClient.findAll().stream()
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.map(BookResource::getBook)
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.collect(Collectors.toList());
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assertTrue(books.size() > 2);
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log.info("{}", books);
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}
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@Test
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public void givenBookClient_shouldFindOneBook() throws Exception {
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BookClient bookClient = controller.getBookClient();
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Book book = bookClient.findByIsbn("0151072558").getBook();
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assertThat(book.getAuthor(), containsString("Orwell"));
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log.info("{}", book);
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}
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@Test
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public void givenBookClient_shouldPostBook() throws Exception {
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BookClient bookClient = controller.getBookClient();
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String isbn = UUID.randomUUID().toString();
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Book book = new Book(isbn, "Me", "It's me!", null, null);
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bookClient.create(book);
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book = bookClient.findByIsbn(isbn).getBook();
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assertThat(book.getAuthor(), is("Me"));
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log.info("{}", book);
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}
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}
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