JAVA-3090: updating README.md for spring-reactive
This commit is contained in:
chaos2418
-176
@@ -1,176 +0,0 @@
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package com.baeldung.reactive.errorhandling;
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import static org.junit.Assert.assertEquals;
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import java.io.IOException;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.boot.test.autoconfigure.web.reactive.AutoConfigureWebTestClient;
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import org.springframework.boot.test.context.SpringBootTest;
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import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
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import org.springframework.http.MediaType;
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import org.springframework.security.test.context.support.WithMockUser;
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import org.springframework.test.annotation.DirtiesContext;
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import org.springframework.test.context.junit4.SpringRunner;
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import org.springframework.test.web.reactive.server.WebTestClient;
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@RunWith(SpringRunner.class)
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@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT)
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@DirtiesContext
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@WithMockUser
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@AutoConfigureWebTestClient(timeout = "10000")
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public class ErrorHandlingIntegrationTest {
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@Autowired
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private WebTestClient webTestClient;
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@Test
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public void givenErrorReturn_whenUsernamePresent_thenOk() throws IOException {
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String s = webTestClient.get()
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.uri("/api/endpoint1?name={username}", "Tony")
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.accept(MediaType.TEXT_PLAIN)
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.exchange()
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.returnResult(String.class)
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.getResponseBody()
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.blockFirst();
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assertEquals("Hello, Tony", s);
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}
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@Test
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public void givenErrorReturn_whenNoUsername_thenOk() throws IOException {
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String s = webTestClient.get()
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.uri("/api/endpoint1")
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.accept(MediaType.TEXT_PLAIN)
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.exchange()
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.returnResult(String.class)
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.getResponseBody()
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.blockFirst();
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assertEquals("Hello, Stranger", s);
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}
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@Test
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public void givenResumeFallback_whenUsernamePresent_thenOk() throws IOException {
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String s = webTestClient.get()
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.uri("/api/endpoint2?name={username}", "Tony")
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.accept(MediaType.TEXT_PLAIN)
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.exchange()
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.returnResult(String.class)
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.getResponseBody()
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.blockFirst();
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assertEquals("Hello, Tony", s);
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}
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@Test
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public void givenResumeFallback_whenNoUsername_thenOk() throws IOException {
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String s = webTestClient.get()
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.uri("/api/endpoint2")
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.accept(MediaType.TEXT_PLAIN)
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.exchange()
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.returnResult(String.class)
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.getResponseBody()
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.blockFirst();
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assertEquals("Hello, Stranger", s);
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}
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@Test
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public void givenResumeDynamicValue_whenUsernamePresent_thenOk() throws IOException {
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String s = webTestClient.get()
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.uri("/api/endpoint3?name={username}", "Tony")
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.accept(MediaType.TEXT_PLAIN)
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.exchange()
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.returnResult(String.class)
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.getResponseBody()
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.blockFirst();
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assertEquals("Hello, Tony", s);
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}
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@Test
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public void givenResumeDynamicValue_whenNoUsername_thenOk() throws IOException {
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String s = webTestClient.get()
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.uri("/api/endpoint3")
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.accept(MediaType.TEXT_PLAIN)
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.exchange()
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.returnResult(String.class)
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.getResponseBody()
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.blockFirst();
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assertEquals("Hi, I looked around for your name but found: No value present", s);
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}
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@Test
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public void givenResumeRethrow_whenUsernamePresent_thenOk() throws IOException {
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String s = webTestClient.get()
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.uri("/api/endpoint4?name={username}", "Tony")
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.accept(MediaType.TEXT_PLAIN)
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.exchange()
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.returnResult(String.class)
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.getResponseBody()
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.blockFirst();
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assertEquals("Hello, Tony", s);
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}
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@Test
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public void givenResumeRethrow_whenNoUsername_thenOk() throws IOException {
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webTestClient.get()
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.uri("/api/endpoint4")
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.accept(MediaType.TEXT_PLAIN)
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.exchange()
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.expectStatus()
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.isBadRequest()
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.expectHeader()
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.contentType(MediaType.APPLICATION_JSON)
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.expectBody()
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.jsonPath("$.message")
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.isNotEmpty()
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.jsonPath("$.message")
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.isEqualTo("please provide a name");
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}
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@Test
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public void givenGlobalErrorHandling_whenUsernamePresent_thenOk() throws IOException {
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String s = webTestClient.get()
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.uri("/api/endpoint5?name={username}", "Tony")
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.accept(MediaType.TEXT_PLAIN)
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.exchange()
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.returnResult(String.class)
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.getResponseBody()
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.blockFirst();
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assertEquals("Hello, Tony", s);
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}
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@Test
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public void givenGlobalErrorHandling_whenNoUsername_thenOk() throws IOException {
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webTestClient.get()
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.uri("/api/endpoint5")
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.accept(MediaType.TEXT_PLAIN)
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.exchange()
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.expectStatus()
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.isBadRequest()
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.expectHeader()
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.contentType(MediaType.APPLICATION_JSON)
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.expectBody()
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.jsonPath("$.message")
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.isNotEmpty()
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.jsonPath("$.message")
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.isEqualTo("please provide a name");
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}
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}
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@@ -1,14 +0,0 @@
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package com.baeldung.web.client;
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import org.junit.jupiter.api.Test;
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import org.springframework.boot.test.context.SpringBootTest;
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import com.baeldung.web.reactive.client.WebClientApplication;
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@SpringBootTest(classes = WebClientApplication.class)
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public class SpringContextTest {
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@Test
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public void whenSpringContextIsBootstrapped_thenNoExceptions() {
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}
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}
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-331
@@ -1,331 +0,0 @@
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package com.baeldung.web.client;
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import static org.assertj.core.api.Assertions.assertThat;
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import java.net.URI;
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import java.nio.charset.StandardCharsets;
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import java.time.Duration;
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import java.time.ZonedDateTime;
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import java.util.Collections;
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import java.util.Map;
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import java.util.concurrent.TimeUnit;
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import org.junit.jupiter.api.Test;
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import org.springframework.boot.test.context.SpringBootTest;
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import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
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import org.springframework.boot.web.server.LocalServerPort;
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import org.springframework.core.ParameterizedTypeReference;
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import org.springframework.core.codec.CodecException;
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import org.springframework.http.HttpHeaders;
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import org.springframework.http.HttpMethod;
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import org.springframework.http.HttpStatus;
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import org.springframework.http.MediaType;
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import org.springframework.http.ReactiveHttpOutputMessage;
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import org.springframework.http.client.reactive.ClientHttpRequest;
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import org.springframework.http.client.reactive.ReactorClientHttpConnector;
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import org.springframework.util.LinkedMultiValueMap;
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import org.springframework.util.MultiValueMap;
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import org.springframework.web.reactive.function.BodyInserter;
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import org.springframework.web.reactive.function.BodyInserters;
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import org.springframework.web.reactive.function.client.WebClient;
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import org.springframework.web.reactive.function.client.WebClient.RequestBodySpec;
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import org.springframework.web.reactive.function.client.WebClient.RequestBodyUriSpec;
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import org.springframework.web.reactive.function.client.WebClient.RequestHeadersSpec;
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import org.springframework.web.reactive.function.client.WebClient.RequestHeadersUriSpec;
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import org.springframework.web.reactive.function.client.WebClient.ResponseSpec;
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import org.springframework.web.reactive.function.client.WebClientRequestException;
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import com.baeldung.web.reactive.client.Foo;
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import com.baeldung.web.reactive.client.WebClientApplication;
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import io.netty.channel.ChannelOption;
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import io.netty.handler.timeout.ReadTimeoutException;
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import io.netty.handler.timeout.ReadTimeoutHandler;
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import io.netty.handler.timeout.WriteTimeoutHandler;
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import reactor.core.publisher.Mono;
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import reactor.netty.http.client.HttpClient;
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import reactor.test.StepVerifier;
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@SpringBootTest(classes = WebClientApplication.class, webEnvironment = WebEnvironment.RANDOM_PORT)
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public class WebClientIntegrationTest {
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@LocalServerPort
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private int port;
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private static final String BODY_VALUE = "bodyValue";
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private static final ParameterizedTypeReference<Map<String, String>> MAP_RESPONSE_REF = new ParameterizedTypeReference<Map<String, String>>() {
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};
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@Test
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public void givenDifferentWebClientCreationMethods_whenUsed_thenObtainExpectedResponse() {
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// WebClient creation
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WebClient client1 = WebClient.create();
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WebClient client2 = WebClient.create("http://localhost:" + port);
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WebClient client3 = WebClient.builder()
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.baseUrl("http://localhost:" + port)
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.defaultCookie("cookieKey", "cookieValue")
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.defaultHeader(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE)
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.defaultUriVariables(Collections.singletonMap("url", "http://localhost:8080"))
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.build();
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// response assertions
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StepVerifier.create(retrieveResponse(client1.post()
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.uri("http://localhost:" + port + "/resource")))
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.expectNext("processed-bodyValue")
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.verifyComplete();
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StepVerifier.create(retrieveResponse(client2))
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.expectNext("processed-bodyValue")
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.verifyComplete();
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StepVerifier.create(retrieveResponse(client3))
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.expectNext("processed-bodyValue")
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.verifyComplete();
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// assert response without specifying URI
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StepVerifier.create(retrieveResponse(client1))
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.expectErrorMatches(ex -> WebClientRequestException.class.isAssignableFrom(ex.getClass()) && ex.getMessage()
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.contains("Connection refused"))
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.verify();
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}
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@Test
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public void givenDifferentMethodSpecifications_whenUsed_thenObtainExpectedResponse() {
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// request specification
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RequestBodyUriSpec uriSpecPost1 = createDefaultClient().method(HttpMethod.POST);
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RequestBodyUriSpec uriSpecPost2 = createDefaultClient().post();
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RequestHeadersUriSpec<?> requestGet = createDefaultClient().get();
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// response assertions
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StepVerifier.create(retrieveResponse(uriSpecPost1))
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.expectNext("processed-bodyValue")
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.verifyComplete();
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StepVerifier.create(retrieveResponse(uriSpecPost2))
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.expectNext("processed-bodyValue")
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.verifyComplete();
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StepVerifier.create(retrieveGetResponse(requestGet))
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.expectNextMatches(nextMap -> nextMap.get("field")
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.equals("value"))
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.verifyComplete();
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}
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@Test
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public void givenDifferentUriSpecifications_whenUsed_thenObtainExpectedResponse() {
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// uri specification
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RequestBodySpec bodySpecUsingString = createDefaultPostRequest().uri("/resource");
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RequestBodySpec bodySpecUsingUriBuilder = createDefaultPostRequest().uri(uriBuilder -> uriBuilder.pathSegment("resource")
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.build());
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RequestBodySpec bodySpecusingURI = createDefaultPostRequest().uri(URI.create("http://localhost:" + port + "/resource"));
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RequestBodySpec bodySpecOverridenBaseUri = createDefaultPostRequest().uri(URI.create("/resource"));
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RequestBodySpec bodySpecOverridenBaseUri2 = WebClient.builder()
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.baseUrl("http://localhost:" + port)
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.build()
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.post()
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.uri(URI.create("/resource"));
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// response assertions
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StepVerifier.create(retrieveResponse(bodySpecUsingString))
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.expectNext("processed-bodyValue")
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.verifyComplete();
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StepVerifier.create(retrieveResponse(bodySpecUsingUriBuilder))
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.expectNext("processed-bodyValue")
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.verifyComplete();
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StepVerifier.create(retrieveResponse(bodySpecusingURI))
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.expectNext("processed-bodyValue")
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.verifyComplete();
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// assert sending request overriding base URI
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StepVerifier.create(retrieveResponse(bodySpecOverridenBaseUri))
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.expectErrorMatches(ex -> WebClientRequestException.class.isAssignableFrom(ex.getClass()) && ex.getMessage()
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.contains("Connection refused"))
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.verify();
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StepVerifier.create(retrieveResponse(bodySpecOverridenBaseUri2))
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.expectErrorMatches(ex -> WebClientRequestException.class.isAssignableFrom(ex.getClass()) && ex.getMessage()
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.contains("Connection refused"))
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.verify();
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}
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@Test
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public void givenDifferentBodySpecifications_whenUsed_thenObtainExpectedResponse() {
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// request body specifications
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RequestHeadersSpec<?> headersSpecPost1 = createDefaultPostResourceRequest().body(BodyInserters.fromPublisher(Mono.just(BODY_VALUE), String.class));
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RequestHeadersSpec<?> headersSpecPost2 = createDefaultPostResourceRequest().body(BodyInserters.fromValue(BODY_VALUE));
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RequestHeadersSpec<?> headersSpecPost3 = createDefaultPostResourceRequest().bodyValue(BODY_VALUE);
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RequestHeadersSpec<?> headersSpecFooPost = createDefaultPostRequest().uri("/resource-foo")
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.body(Mono.just(new Foo("fooName")), Foo.class);
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BodyInserter<Object, ReactiveHttpOutputMessage> inserterPlainObject = BodyInserters.fromValue(new Object());
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RequestHeadersSpec<?> headersSpecPlainObject = createDefaultPostResourceRequest().body(inserterPlainObject);
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// request body specifications - using other inserter method (multipart request)
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LinkedMultiValueMap<String, String> map = new LinkedMultiValueMap<>();
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map.add("key1", "multipartValue1");
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map.add("key2", "multipartValue2");
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BodyInserter<MultiValueMap<String, Object>, ClientHttpRequest> inserterMultipart = BodyInserters.fromMultipartData(map);
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RequestHeadersSpec<?> headersSpecInserterMultipart = createDefaultPostRequest().uri("/resource-multipart")
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.body(inserterMultipart);
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// response assertions
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StepVerifier.create(retrieveResponse(headersSpecPost1))
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.expectNext("processed-bodyValue")
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.verifyComplete();
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StepVerifier.create(retrieveResponse(headersSpecPost2))
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.expectNext("processed-bodyValue")
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.verifyComplete();
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StepVerifier.create(retrieveResponse(headersSpecPost3))
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.expectNext("processed-bodyValue")
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.verifyComplete();
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StepVerifier.create(retrieveResponse(headersSpecFooPost))
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.expectNext("processedFoo-fooName")
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.verifyComplete();
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StepVerifier.create(retrieveResponse(headersSpecInserterMultipart))
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.expectNext("processed-multipartValue1-multipartValue2")
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.verifyComplete();
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// assert error plain `new Object()` as request body
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StepVerifier.create(retrieveResponse(headersSpecPlainObject))
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.expectError(CodecException.class)
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.verify();
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// assert response for request with no body
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Mono<Map<String, String>> responsePostWithNoBody = createDefaultPostResourceRequest().exchangeToMono(responseHandler -> {
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assertThat(responseHandler.statusCode()).isEqualTo(HttpStatus.BAD_REQUEST);
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return responseHandler.bodyToMono(MAP_RESPONSE_REF);
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});
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StepVerifier.create(responsePostWithNoBody)
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.expectNextMatches(nextMap -> nextMap.get("error")
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.equals("Bad Request"))
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.verifyComplete();
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}
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@Test
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public void givenPostSpecifications_whenHeadersAdded_thenObtainExpectedResponse() {
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// request header specification
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RequestHeadersSpec<?> headersSpecInserterStringWithHeaders = createDefaultPostResourceRequestResponse().header(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE)
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.accept(MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML)
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.acceptCharset(StandardCharsets.UTF_8)
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.ifNoneMatch("*")
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.ifModifiedSince(ZonedDateTime.now());
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// response assertions
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StepVerifier.create(retrieveResponse(headersSpecInserterStringWithHeaders))
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.expectNext("processed-bodyValue")
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.verifyComplete();
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}
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@Test
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public void givenDifferentResponseSpecifications_whenUsed_thenObtainExpectedResponse() {
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ResponseSpec responseSpecPostString = createDefaultPostResourceRequestResponse().retrieve();
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Mono<String> responsePostString = responseSpecPostString.bodyToMono(String.class);
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Mono<String> responsePostString2 = createDefaultPostResourceRequestResponse().exchangeToMono(response -> {
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if (response.statusCode()
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.equals(HttpStatus.OK)) {
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return response.bodyToMono(String.class);
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} else if (response.statusCode()
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.is4xxClientError()) {
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return Mono.just("Error response");
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} else {
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return response.createException()
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.flatMap(Mono::error);
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}
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});
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Mono<String> responsePostNoBody = createDefaultPostResourceRequest().exchangeToMono(response -> {
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if (response.statusCode()
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.equals(HttpStatus.OK)) {
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return response.bodyToMono(String.class);
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} else if (response.statusCode()
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.is4xxClientError()) {
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return Mono.just("Error response");
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} else {
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return response.createException()
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.flatMap(Mono::error);
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}
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});
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Mono<Map<String, String>> responseGet = createDefaultClient().get()
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.uri("/resource")
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.retrieve()
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.bodyToMono(MAP_RESPONSE_REF);
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// response assertions
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StepVerifier.create(responsePostString)
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.expectNext("processed-bodyValue")
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.verifyComplete();
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StepVerifier.create(responsePostString2)
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.expectNext("processed-bodyValue")
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.verifyComplete();
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StepVerifier.create(responsePostNoBody)
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.expectNext("Error response")
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.verifyComplete();
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StepVerifier.create(responseGet)
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.expectNextMatches(nextMap -> nextMap.get("field")
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.equals("value"))
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.verifyComplete();
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}
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@Test
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public void givenWebClientWithTimeoutConfigurations_whenRequestUsingWronglyConfiguredPublisher_thenObtainTimeout() {
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HttpClient httpClient = HttpClient.create()
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.option(ChannelOption.CONNECT_TIMEOUT_MILLIS, 1000)
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.responseTimeout(Duration.ofMillis(1000))
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.doOnConnected(conn -> conn.addHandlerLast(new ReadTimeoutHandler(1000, TimeUnit.MILLISECONDS))
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.addHandlerLast(new WriteTimeoutHandler(1000, TimeUnit.MILLISECONDS)));
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||||
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WebClient timeoutClient = WebClient.builder()
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.baseUrl("http://localhost:" + port)
|
||||
.clientConnector(new ReactorClientHttpConnector(httpClient))
|
||||
.build();
|
||||
|
||||
RequestHeadersSpec<?> neverendingMonoBodyRequest = timeoutClient.post()
|
||||
.uri("/resource")
|
||||
.body(Mono.never(), String.class);
|
||||
|
||||
StepVerifier.create(neverendingMonoBodyRequest.retrieve()
|
||||
.bodyToMono(String.class))
|
||||
.expectErrorMatches(ex -> WebClientRequestException.class.isAssignableFrom(ex.getClass()) && ReadTimeoutException.class.isAssignableFrom(ex.getCause()
|
||||
.getClass()))
|
||||
.verify();
|
||||
}
|
||||
|
||||
// helper methods to create default instances
|
||||
private WebClient createDefaultClient() {
|
||||
return WebClient.create("http://localhost:" + port);
|
||||
}
|
||||
|
||||
private RequestBodyUriSpec createDefaultPostRequest() {
|
||||
return createDefaultClient().post();
|
||||
}
|
||||
|
||||
private RequestBodySpec createDefaultPostResourceRequest() {
|
||||
return createDefaultPostRequest().uri("/resource");
|
||||
}
|
||||
|
||||
private RequestHeadersSpec<?> createDefaultPostResourceRequestResponse() {
|
||||
return createDefaultPostResourceRequest().bodyValue(BODY_VALUE);
|
||||
}
|
||||
|
||||
// helper methods to retrieve a response based on different steps of the process (specs)
|
||||
private Mono<String> retrieveResponse(WebClient client) {
|
||||
return client.post()
|
||||
.uri("/resource")
|
||||
.bodyValue(BODY_VALUE)
|
||||
.retrieve()
|
||||
.bodyToMono(String.class);
|
||||
}
|
||||
|
||||
private Mono<String> retrieveResponse(RequestBodyUriSpec spec) {
|
||||
return spec.uri("/resource")
|
||||
.bodyValue(BODY_VALUE)
|
||||
.retrieve()
|
||||
.bodyToMono(String.class);
|
||||
}
|
||||
|
||||
private Mono<Map<String, String>> retrieveGetResponse(RequestHeadersUriSpec<?> spec) {
|
||||
return spec.uri("/resource")
|
||||
.retrieve()
|
||||
.bodyToMono(MAP_RESPONSE_REF);
|
||||
}
|
||||
|
||||
private Mono<String> retrieveResponse(RequestBodySpec spec) {
|
||||
return spec.bodyValue(BODY_VALUE)
|
||||
.retrieve()
|
||||
.bodyToMono(String.class);
|
||||
}
|
||||
|
||||
private Mono<String> retrieveResponse(RequestHeadersSpec<?> spec) {
|
||||
return spec.retrieve()
|
||||
.bodyToMono(String.class);
|
||||
}
|
||||
}
|
||||
-102
@@ -1,102 +0,0 @@
|
||||
package com.baeldung.web.client;
|
||||
|
||||
import org.junit.jupiter.api.Test;
|
||||
import org.springframework.beans.factory.annotation.Autowired;
|
||||
import org.springframework.boot.test.context.SpringBootTest;
|
||||
import org.springframework.boot.web.server.LocalServerPort;
|
||||
import org.springframework.context.ApplicationContext;
|
||||
import org.springframework.security.test.context.support.WithMockUser;
|
||||
import org.springframework.test.web.reactive.server.WebTestClient;
|
||||
import org.springframework.web.reactive.function.server.RequestPredicates;
|
||||
import org.springframework.web.reactive.function.server.RouterFunction;
|
||||
import org.springframework.web.reactive.function.server.RouterFunctions;
|
||||
import org.springframework.web.reactive.function.server.ServerResponse;
|
||||
import org.springframework.web.server.WebHandler;
|
||||
|
||||
import com.baeldung.web.reactive.client.WebClientApplication;
|
||||
import com.baeldung.web.reactive.client.WebClientController;
|
||||
|
||||
import reactor.core.publisher.Mono;
|
||||
|
||||
@SpringBootTest(classes = WebClientApplication.class, webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
|
||||
public class WebTestClientIntegrationTest {
|
||||
|
||||
@LocalServerPort
|
||||
private int port;
|
||||
|
||||
@Autowired
|
||||
private ApplicationContext context;
|
||||
|
||||
@Autowired
|
||||
private WebClientController controller;
|
||||
|
||||
private final RouterFunction ROUTER_FUNCTION = RouterFunctions.route(RequestPredicates.GET("/resource"), request -> ServerResponse.ok()
|
||||
.build());
|
||||
private final WebHandler WEB_HANDLER = exchange -> Mono.empty();
|
||||
|
||||
@Test
|
||||
public void testWebTestClientWithServerWebHandler() {
|
||||
WebTestClient.bindToWebHandler(WEB_HANDLER)
|
||||
.build();
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testWebTestClientWithRouterFunction() {
|
||||
WebTestClient.bindToRouterFunction(ROUTER_FUNCTION)
|
||||
.build()
|
||||
.get()
|
||||
.uri("/resource")
|
||||
.exchange()
|
||||
.expectStatus()
|
||||
.isOk()
|
||||
.expectBody()
|
||||
.isEmpty();
|
||||
}
|
||||
|
||||
@Test
|
||||
@WithMockUser
|
||||
public void testWebTestClientWithServerURL() {
|
||||
WebTestClient.bindToServer()
|
||||
.baseUrl("http://localhost:" + port)
|
||||
.build()
|
||||
.get()
|
||||
.uri("/resource")
|
||||
.exchange()
|
||||
.expectStatus()
|
||||
.isOk()
|
||||
.expectBody()
|
||||
.jsonPath("field")
|
||||
.isEqualTo("value");
|
||||
;
|
||||
}
|
||||
|
||||
@Test
|
||||
@WithMockUser
|
||||
public void testWebTestClientWithApplicationContext() {
|
||||
WebTestClient.bindToApplicationContext(context)
|
||||
.build()
|
||||
.get()
|
||||
.uri("/resource")
|
||||
.exchange()
|
||||
.expectStatus()
|
||||
.isOk()
|
||||
.expectBody()
|
||||
.jsonPath("field")
|
||||
.isEqualTo("value");
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testWebTestClientWithController() {
|
||||
WebTestClient.bindToController(controller)
|
||||
.build()
|
||||
.get()
|
||||
.uri("/resource")
|
||||
.exchange()
|
||||
.expectStatus()
|
||||
.isOk()
|
||||
.expectBody()
|
||||
.jsonPath("field")
|
||||
.isEqualTo("value");
|
||||
}
|
||||
|
||||
}
|
||||
Reference in New Issue
Block a user