Move articles from spring-core-6 module to other spring-boot modules (#13722)

* Move articles from spring-core-6 module to other spring-boot modules

* JAVA-19559 Move articles from spring-core-6 module to other spring-boot-3 modules

* JAVA-19559 Minor spacing change

* JAVA-19559 Revert  Minor spacing change

spring-boot-modules/spring-boot-3/README.md

@@ -5,3 +5,4 @@
 - [Singleton Design Pattern vs Singleton Beans in Spring Boot](https://www.baeldung.com/spring-boot-singleton-vs-beans)
 - [Migrate Application From Spring Boot 2 to Spring Boot 3](https://www.baeldung.com/spring-boot-3-migration)
 - [Using Java Records with JPA](https://www.baeldung.com/spring-jpa-java-records)
+- [HTTP Interface in Spring 6](https://www.baeldung.com/spring-6-http-interface)

spring-boot-modules/spring-boot-3/pom.xml

@@ -32,6 +32,20 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-data-jpa</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-webflux</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.mock-server</groupId>
+            <artifactId>mockserver-netty</artifactId>
+            <version>${mockserver.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.mock-server</groupId>
+            <artifactId>mockserver-client-java</artifactId>
+            <version>${mockserver.version}</version>
+        </dependency>
         <dependency>
             <groupId>com.h2database</groupId>
             <artifactId>h2</artifactId>
@@ -125,7 +139,7 @@
         <springdoc.version>2.0.0</springdoc.version>
         <maven-surefire-plugin.version>3.0.0-M7</maven-surefire-plugin.version>
         <start-class>com.baeldung.sample.TodoApplication</start-class>
-
+		<mockserver.version>5.14.0</mockserver.version>
     </properties>
 
 </project>

spring-boot-modules/spring-boot-3/src/main/java/com/baeldung/httpinterface/BooksService.java

@@ -15,12 +15,12 @@ interface BooksService {
     List<Book> getBooks();
 
     @GetExchange("/books/{id}")
-    Book getBook(@PathVariable long id);
+    Book getBook(@PathVariable("id") long id);
 
     @PostExchange("/books")
     Book saveBook(@RequestBody Book book);
 
     @DeleteExchange("/books/{id}")
-    ResponseEntity<Void> deleteBook(@PathVariable long id);
+    ResponseEntity<Void> deleteBook(@PathVariable("id") long id);
 
 }

spring-boot-modules/spring-boot-properties-3/README.md

@@ -10,3 +10,5 @@
 - [Load Spring Boot Properties From a JSON File](https://www.baeldung.com/spring-boot-json-properties)
 - [IntelliJ – Cannot Resolve Spring Boot Configuration Properties Error](https://www.baeldung.com/intellij-resolve-spring-boot-configuration-properties)
 - [Log Properties in a Spring Boot Application](https://www.baeldung.com/spring-boot-log-properties)
+- [Using Environment Variables in Spring Boot’s application.properties](https://www.baeldung.com/spring-boot-properties-env-variables)
+- More articles: [[<-- prev]](../spring-boot-properties-2)

spring-boot-modules/spring-boot-properties-3/src/main/java/com/baeldung/envvariables/BaeldungProperties.java

@@ -1,20 +1,20 @@
-package com.baeldung.envvariables.valueinjection;
+package com.baeldung.envvariables;
-
+
-import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.boot.context.properties.ConfigurationProperties;
-import org.springframework.stereotype.Component;
+import org.springframework.stereotype.Component;
-
+
-@Component
+@Component
-@ConfigurationProperties(prefix = "baeldung")
+@ConfigurationProperties(prefix = "baeldung")
-public class BaeldungProperties {
+public class BaeldungProperties {
-
+
-    private String presentation;
+    private String presentation;
-
+
-    public String getPresentation() {
+    public String getPresentation() {
-        return presentation;
+        return presentation;
-    }
+    }
-
+
-    public void setPresentation(String presentation) {
+    public void setPresentation(String presentation) {
-        this.presentation = presentation;
+        this.presentation = presentation;
-    }
+    }
-
+
-}
+}

spring-boot-modules/spring-boot-properties-3/src/main/java/com/baeldung/envvariables/MyController.java

@@ -1,60 +1,60 @@
-package com.baeldung.envvariables.valueinjection;
+package com.baeldung.envvariables;
-
+
-import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.beans.factory.annotation.Value;
+import org.springframework.beans.factory.annotation.Value;
-import org.springframework.core.env.Environment;
+import org.springframework.core.env.Environment;
-import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.bind.annotation.RestController;
-
+
-@RestController
+@RestController
-public class MyController {
+public class MyController {
-
+
-    @Value("${environment.name}")
+    @Value("${environment.name}")
-    private String environmentName;
+    private String environmentName;
-
+
-    @Value("${java.home.and.environment}")
+    @Value("${java.home.and.environment}")
-    private String javaHomeAndEnvironmentName;
+    private String javaHomeAndEnvironmentName;
-
+
-    @Value("${thispropertydoesnotexist}")
+    @Value("${thispropertydoesnotexist}")
-    private String nonExistentProperty;
+    private String nonExistentProperty;
-
+
-    @Value("${baeldung.presentation}")
+    @Value("${baeldung.presentation}")
-    private String baeldungPresentation;
+    private String baeldungPresentation;
-
+
-    @Autowired
+    @Autowired
-    private Environment environment;
+    private Environment environment;
-
+
-    @Autowired
+    @Autowired
-    private BaeldungProperties baeldungProperties;
+    private BaeldungProperties baeldungProperties;
-
+
-    @GetMapping("/environment_name")
+    @GetMapping("/environment_name")
-    String getEnvironmentName_FromEnvironmentVariables() {
+    String getEnvironmentName_FromEnvironmentVariables() {
-        return environmentName;
+        return environmentName;
-    }
+    }
-
+
-    @GetMapping("/java_home_and_environment")
+    @GetMapping("/java_home_and_environment")
-    String getJavaHomeAndEnvironmentName_FromEnvironmentVariables() {
+    String getJavaHomeAndEnvironmentName_FromEnvironmentVariables() {
-        return javaHomeAndEnvironmentName;
+        return javaHomeAndEnvironmentName;
-    }
+    }
-
+
-    @GetMapping("non_existent_property")
+    @GetMapping("non_existent_property")
-    String getNonexistentProperty_FromEnvironmentVariables() {
+    String getNonexistentProperty_FromEnvironmentVariables() {
-        return nonExistentProperty;
+        return nonExistentProperty;
-    }
+    }
-
+
-    @GetMapping("baeldung_presentation_from_value")
+    @GetMapping("baeldung_presentation_from_value")
-    String getBaeldungPresentation_FromValue() {
+    String getBaeldungPresentation_FromValue() {
-        return baeldungPresentation;
+        return baeldungPresentation;
-    }
+    }
-
+
-    @GetMapping("baeldung_presentation_from_environment")
+    @GetMapping("baeldung_presentation_from_environment")
-    String getBaeldungPresentation_FromEnvironment() {
+    String getBaeldungPresentation_FromEnvironment() {
-        return environment.getProperty("baeldung.presentation");
+        return environment.getProperty("baeldung.presentation");
-    }
+    }
-
+
-    @GetMapping("baeldung_configuration_properties")
+    @GetMapping("baeldung_configuration_properties")
-    String getBaeldungPresentation_FromConfigurationProperties() {
+    String getBaeldungPresentation_FromConfigurationProperties() {
-        return baeldungProperties.getPresentation();
+        return baeldungProperties.getPresentation();
-    }
+    }
-
+
-}
+}

spring-boot-modules/spring-boot-properties-3/src/main/resources/application.properties

@@ -26,4 +26,9 @@ spring.config.activate.on-profile=multidocument-prod
 spring.datasource.password=password
 spring.datasource.url=jdbc:h2:prod
 spring.datasource.username=prodUser
-bael.property=prodValue
+bael.property=prodValue
+#---
+environment.name=${OS}
+java.home.and.environment=${JAVA_HOME}+${OS}
+not.existing.system.property=${thispropertydoesnotexist}
+baeldung.presentation=${HELLO_BAELDUNG}. Java is installed in the folder: ${JAVA_HOME}

spring-boot-modules/spring-boot-properties-3/src/test/java/com/baeldung/envvariables/MyControllerIntegrationTest.java

@@ -1,36 +1,36 @@
-package com.baeldung.envvariables.valueinjection;
+package com.baeldung.envvariables;
-
+
-import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
-import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.context.SpringBootTest;
-import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.test.web.servlet.MockMvc;
-
+
-@SpringBootTest(classes = MyController.class)
+@SpringBootTest(classes = MyController.class)
-@AutoConfigureMockMvc
+@AutoConfigureMockMvc
-public class MyControllerIntegrationTest {
+public class MyControllerIntegrationTest {
-
+
-    @Autowired
+    @Autowired
-    private MockMvc mockMvc;
+    private MockMvc mockMvc;
-
+
-    /** NB : these tests are commented out because they are environment dependent
+    /** NB : these tests are commented out because they are environment dependent
-     * If you want to run one of them on your machine, follow the instruction above it
+     * If you want to run one of them on your machine, follow the instruction above it
-     *
+     *
-     * expects the value of your system environment property 'OS' (it is already defined at least in Windows_NT)
+     * expects the value of your system environment property 'OS' (it is already defined at least in Windows_NT)
-     @Test void givenExistingSystemProperty_whenInjected_thenHasSystemPropertyValue() throws Exception {
+     @Test void givenExistingSystemProperty_whenInjected_thenHasSystemPropertyValue() throws Exception {
-     mockMvc.perform(get("/environment_name"))
+     mockMvc.perform(get("/environment_name"))
-     .andExpect(content().string(equalTo("Windows_NT")));
+     .andExpect(content().string(equalTo("Windows_NT")));
-     }
+     }
-
+    
-      * expects the value of the JAVA_HOME environment variable (you need to define it if you haven't yet), with a + and the 'OS' environment property in the end
+      * expects the value of the JAVA_HOME environment variable (you need to define it if you haven't yet), with a + and the 'OS' environment property in the end
-     @Test void givenCombinationOfSystemPropertyAndEnvironmentVariable_whenInjected_thenHasExpectedValue() throws Exception {
+     @Test void givenCombinationOfSystemPropertyAndEnvironmentVariable_whenInjected_thenHasExpectedValue() throws Exception {
-     mockMvc.perform(get("/java_home_and_environment"))
+     mockMvc.perform(get("/java_home_and_environment"))
-     .andExpect(content().string(equalTo("C:\\Program Files\\Java\\jdk-11.0.14+Windows_NT")));
+     .andExpect(content().string(equalTo("C:\\Program Files\\Java\\jdk-11.0.14+Windows_NT")));
-     }
+     }
-
+    
-      * expects the content to be ${thispropertydoesnotexist} ; if you have defined an environment property called thispropertydoesnotexist, it would fail
+      * expects the content to be ${thispropertydoesnotexist} ; if you have defined an environment property called thispropertydoesnotexist, it would fail
-     @Test void givenNonExistentProperty_whenInjected_thenKeepsTheStringValue() throws Exception {
+     @Test void givenNonExistentProperty_whenInjected_thenKeepsTheStringValue() throws Exception {
-     mockMvc.perform(get("/non_existent_property"))
+     mockMvc.perform(get("/non_existent_property"))
-     .andExpect(content().string(equalTo("${thispropertydoesnotexist}")));
+     .andExpect(content().string(equalTo("${thispropertydoesnotexist}")));
-     }
+     }
-     */
+     */
-}
+}

spring-core-6/README.md

@@ -1,6 +1,5 @@
 
 ### Relevant Articles:
-- [Using Environment Variables in Spring Boot’s application.properties](https://www.baeldung.com/spring-boot-properties-env-variables)
 - [Reinitialize Singleton Bean in Spring Context](https://www.baeldung.com/spring-reinitialize-singleton-bean)
-- [HTTP Interface in Spring 6](https://www.baeldung.com/spring-6-http-interface)
 - [Getting the Current ApplicationContext in Spring](https://www.baeldung.com/spring-get-current-applicationcontext)
+- More articles: [[<-- prev]](../spring-core-5)

spring-core-6/pom.xml

@@ -21,20 +21,6 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
         </dependency>
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-webflux</artifactId>
-        </dependency>
-        <dependency>
-            <groupId>org.mock-server</groupId>
-            <artifactId>mockserver-netty</artifactId>
-            <version>${mockserver.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.mock-server</groupId>
-            <artifactId>mockserver-client-java</artifactId>
-            <version>${mockserver.version}</version>
-        </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-test</artifactId>
@@ -104,7 +90,6 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <maven.compiler.source>17</maven.compiler.source>
         <maven.compiler.target>17</maven.compiler.target>
-        <mockserver.version>5.14.0</mockserver.version>
     </properties>
 
 </project>

spring-core-6/src/main/resources/application.properties

@@ -1,5 +1 @@
-environment.name=${OS}
-java.home.and.environment=${JAVA_HOME}+${OS}
-not.existing.system.property=${thispropertydoesnotexist}
-baeldung.presentation=${HELLO_BAELDUNG}. Java is installed in the folder: ${JAVA_HOME}
 config.file.path=./spring-core-6/src/main/resources/config.properties

spring-core-6/src/test/java/com/baeldung/httpinterface/BooksServiceMockServerTest.java

@@ -1,217 +0,0 @@
-package com.baeldung.httpinterface;
-
-import org.apache.http.HttpException;
-import org.apache.http.HttpStatus;
-import org.junit.jupiter.api.AfterAll;
-import org.junit.jupiter.api.BeforeAll;
-import org.junit.jupiter.api.Test;
-import org.mockserver.client.MockServerClient;
-import org.mockserver.integration.ClientAndServer;
-import org.mockserver.configuration.Configuration;
-
-import java.io.IOException;
-import java.net.ServerSocket;
-import java.util.List;
-
-import org.mockserver.model.HttpRequest;
-import org.mockserver.model.MediaType;
-import org.mockserver.verify.VerificationTimes;
-import org.slf4j.event.Level;
-import org.springframework.http.HttpMethod;
-import org.springframework.http.HttpStatusCode;
-import org.springframework.http.ResponseEntity;
-import org.springframework.web.reactive.function.client.WebClient;
-import org.springframework.web.reactive.function.client.WebClientResponseException;
-import reactor.core.publisher.Mono;
-
-import static org.junit.jupiter.api.Assertions.assertThrows;
-import static org.junit.jupiter.api.Assertions.assertTrue;
-import static org.mockserver.integration.ClientAndServer.startClientAndServer;
-import static org.mockserver.matchers.Times.exactly;
-import static org.mockserver.model.HttpRequest.request;
-import static org.mockserver.model.HttpResponse.response;
-import static org.junit.jupiter.api.Assertions.assertEquals;
-
-class BooksServiceMockServerTest {
-
-    private static final String SERVER_ADDRESS = "localhost";
-    private static final String PATH = "/books";
-
-    private static int serverPort;
-    private static ClientAndServer mockServer;
-    private static String serviceUrl;
-
-    @BeforeAll
-    static void startServer() throws IOException {
-        serverPort = getFreePort();
-        serviceUrl = "http://" + SERVER_ADDRESS + ":" + serverPort;
-
-        Configuration config = Configuration.configuration().logLevel(Level.WARN);
-        mockServer = startClientAndServer(config, serverPort);
-
-        mockAllBooksRequest();
-        mockBookByIdRequest();
-        mockSaveBookRequest();
-        mockDeleteBookRequest();
-    }
-
-    @AfterAll
-    static void stopServer() {
-        mockServer.stop();
-    }
-
-    @Test
-    void givenMockedGetResponse_whenGetBooksServiceMethodIsCalled_thenTwoBooksAreReturned() {
-        BooksClient booksClient = new BooksClient(WebClient.builder().baseUrl(serviceUrl).build());
-        BooksService booksService = booksClient.getBooksService();
-
-        List<Book> books = booksService.getBooks();
-        assertEquals(2, books.size());
-
-        mockServer.verify(
-          HttpRequest.request()
-            .withMethod(HttpMethod.GET.name())
-            .withPath(PATH),
-          VerificationTimes.exactly(1)
-        );
-    }
-
-    @Test
-    void givenMockedGetResponse_whenGetExistingBookServiceMethodIsCalled_thenCorrectBookIsReturned() {
-        BooksClient booksClient = new BooksClient(WebClient.builder().baseUrl(serviceUrl).build());
-        BooksService booksService = booksClient.getBooksService();
-
-        Book book = booksService.getBook(1);
-        assertEquals("Book_1", book.title());
-
-        mockServer.verify(
-          HttpRequest.request()
-            .withMethod(HttpMethod.GET.name())
-            .withPath(PATH + "/1"),
-          VerificationTimes.exactly(1)
-        );
-    }
-
-    @Test
-    void givenMockedGetResponse_whenGetNonExistingBookServiceMethodIsCalled_thenCorrectBookIsReturned() {
-        BooksClient booksClient = new BooksClient(WebClient.builder().baseUrl(serviceUrl).build());
-        BooksService booksService = booksClient.getBooksService();
-
-        assertThrows(WebClientResponseException.class, () -> booksService.getBook(9));
-    }
-
-    @Test
-    void givenCustomErrorHandlerIsSet_whenGetNonExistingBookServiceMethodIsCalled_thenCustomExceptionIsThrown() {
-        BooksClient booksClient = new BooksClient(WebClient.builder()
-          .defaultStatusHandler(HttpStatusCode::isError, resp ->
-            Mono.just(new MyServiceException("Custom exception")))
-          .baseUrl(serviceUrl)
-          .build());
-
-        BooksService booksService = booksClient.getBooksService();
-        assertThrows(MyServiceException.class, () -> booksService.getBook(9));
-    }
-
-    @Test
-    void givenMockedPostResponse_whenSaveBookServiceMethodIsCalled_thenCorrectBookIsReturned() {
-        BooksClient booksClient = new BooksClient(WebClient.builder().baseUrl(serviceUrl).build());
-        BooksService booksService = booksClient.getBooksService();
-
-        Book book = booksService.saveBook(new Book(3, "Book_3", "Author_3", 2000));
-        assertEquals("Book_3", book.title());
-
-        mockServer.verify(
-          HttpRequest.request()
-            .withMethod(HttpMethod.POST.name())
-            .withPath(PATH),
-          VerificationTimes.exactly(1)
-        );
-    }
-
-    @Test
-    void givenMockedDeleteResponse_whenDeleteBookServiceMethodIsCalled_thenCorrectCodeIsReturned() {
-        BooksClient booksClient = new BooksClient(WebClient.builder().baseUrl(serviceUrl).build());
-        BooksService booksService = booksClient.getBooksService();
-
-        ResponseEntity<Void> response = booksService.deleteBook(3);
-        assertEquals(HttpStatusCode.valueOf(200), response.getStatusCode());
-
-        mockServer.verify(
-          HttpRequest.request()
-            .withMethod(HttpMethod.DELETE.name())
-            .withPath(PATH + "/3"),
-          VerificationTimes.exactly(1)
-        );
-    }
-
-    private static int getFreePort () throws IOException {
-        try (ServerSocket serverSocket = new ServerSocket(0)) {
-            return serverSocket.getLocalPort();
-        }
-    }
-
-    private static void mockAllBooksRequest() {
-        new MockServerClient(SERVER_ADDRESS, serverPort)
-          .when(
-            request()
-              .withPath(PATH)
-              .withMethod(HttpMethod.GET.name()),
-            exactly(1)
-          )
-          .respond(
-            response()
-              .withStatusCode(HttpStatus.SC_OK)
-              .withContentType(MediaType.APPLICATION_JSON)
-              .withBody("[{\"id\":1,\"title\":\"Book_1\",\"author\":\"Author_1\",\"year\":1998},{\"id\":2,\"title\":\"Book_2\",\"author\":\"Author_2\",\"year\":1999}]")
-          );
-    }
-
-    private static void mockBookByIdRequest() {
-        new MockServerClient(SERVER_ADDRESS, serverPort)
-          .when(
-            request()
-              .withPath(PATH + "/1")
-              .withMethod(HttpMethod.GET.name()),
-            exactly(1)
-          )
-          .respond(
-            response()
-              .withStatusCode(HttpStatus.SC_OK)
-              .withContentType(MediaType.APPLICATION_JSON)
-              .withBody("{\"id\":1,\"title\":\"Book_1\",\"author\":\"Author_1\",\"year\":1998}")
-          );
-    }
-
-    private static void mockSaveBookRequest() {
-        new MockServerClient(SERVER_ADDRESS, serverPort)
-          .when(
-            request()
-              .withPath(PATH)
-              .withMethod(HttpMethod.POST.name())
-              .withContentType(MediaType.APPLICATION_JSON)
-              .withBody("{\"id\":3,\"title\":\"Book_3\",\"author\":\"Author_3\",\"year\":2000}"),
-            exactly(1)
-          )
-          .respond(
-            response()
-              .withStatusCode(HttpStatus.SC_OK)
-              .withContentType(MediaType.APPLICATION_JSON)
-              .withBody("{\"id\":3,\"title\":\"Book_3\",\"author\":\"Author_3\",\"year\":2000}")
-          );
-    }
-
-    private static void mockDeleteBookRequest() {
-        new MockServerClient(SERVER_ADDRESS, serverPort)
-          .when(
-            request()
-              .withPath(PATH + "/3")
-              .withMethod(HttpMethod.DELETE.name()),
-            exactly(1)
-          )
-          .respond(
-            response()
-              .withStatusCode(HttpStatus.SC_OK)
-          );
-    }
-
-}

spring-core-6/src/test/java/com/baeldung/httpinterface/BooksServiceMockitoTest.java

@@ -1,88 +0,0 @@
-package com.baeldung.httpinterface;
-
-import org.junit.jupiter.api.Test;
-import org.junit.jupiter.api.extension.ExtendWith;
-import org.mockito.Answers;
-import org.mockito.InjectMocks;
-import org.mockito.Mock;
-import org.mockito.junit.jupiter.MockitoExtension;
-import org.springframework.core.ParameterizedTypeReference;
-import org.springframework.http.HttpMethod;
-import org.springframework.http.HttpStatusCode;
-import org.springframework.http.ResponseEntity;
-import org.springframework.web.reactive.function.client.WebClient;
-import reactor.core.publisher.Mono;
-
-import static org.mockito.BDDMockito.*;
-
-import java.util.List;
-
-import static org.junit.jupiter.api.Assertions.assertEquals;
-
-@ExtendWith(MockitoExtension.class)
-class BooksServiceMockitoTest {
-
-    @Mock(answer = Answers.RETURNS_DEEP_STUBS)
-    private WebClient webClient;
-
-    @InjectMocks
-    private BooksClient booksClient;
-
-    @Test
-    void givenMockedWebClientReturnsTwoBooks_whenGetBooksServiceMethodIsCalled_thenListOfTwoBooksIsReturned() {
-        given(webClient.method(HttpMethod.GET)
-          .uri(anyString(), anyMap())
-          .retrieve()
-          .bodyToMono(new ParameterizedTypeReference<List<Book>>(){}))
-          .willReturn(Mono.just(List.of(
-            new Book(1,"Book_1", "Author_1", 1998),
-            new Book(2, "Book_2", "Author_2", 1999)
-          )));
-
-        BooksService booksService = booksClient.getBooksService();
-        List<Book> books = booksService.getBooks();
-        assertEquals(2, books.size());
-    }
-
-    @Test
-    void givenMockedWebClientReturnsBook_whenGetBookServiceMethodIsCalled_thenBookIsReturned() {
-        given(webClient.method(HttpMethod.GET)
-          .uri(anyString(), anyMap())
-          .retrieve()
-          .bodyToMono(new ParameterizedTypeReference<Book>(){}))
-          .willReturn(Mono.just(new Book(1,"Book_1", "Author_1", 1998)));
-
-        BooksService booksService = booksClient.getBooksService();
-        Book book = booksService.getBook(1);
-        assertEquals("Book_1", book.title());
-    }
-
-    @Test
-    void givenMockedWebClientReturnsBook_whenSaveBookServiceMethodIsCalled_thenBookIsReturned() {
-        given(webClient.method(HttpMethod.POST)
-          .uri(anyString(), anyMap())
-          .retrieve()
-          .bodyToMono(new ParameterizedTypeReference<Book>(){}))
-          .willReturn(Mono.just(new Book(3, "Book_3", "Author_3", 2000)));
-
-        BooksService booksService = booksClient.getBooksService();
-        Book book = booksService.saveBook(new Book(3, "Book_3", "Author_3", 2000));
-        assertEquals("Book_3", book.title());
-    }
-
-    @Test
-    void givenMockedWebClientReturnsOk_whenDeleteBookServiceMethodIsCalled_thenOkCodeIsReturned() {
-        given(webClient.method(HttpMethod.DELETE)
-          .uri(anyString(), anyMap())
-          .retrieve()
-          .toBodilessEntity()
-          .block(any())
-          .getStatusCode())
-          .willReturn(HttpStatusCode.valueOf(200));
-
-        BooksService booksService = booksClient.getBooksService();
-        ResponseEntity<Void> response = booksService.deleteBook(3);
-        assertEquals(HttpStatusCode.valueOf(200), response.getStatusCode());
-    }
-
-}