如何模拟Spring和WebClient
如何模拟Spring和WebClient
提问于 2021-11-05 17:46:37
我正在尝试模拟Spring WebClient，但在模拟WebClient.builder()时遇到了问题。到目前为止，我在测试中定义的模拟没有被使用，我想是因为这个构建器没有返回我的模拟WebClient。我怎样才能让构建器返回我的mock？
WebClient webClient = WebClient.builder()
.exchangeStrategies(ExchangeStrategies.builder()
.codecs(configurer -> configurer
.defaultCodecs()
.maxInMemorySize(16 * 1024 * 1024))
.build())
.clientConnector(new ReactorClientHttpConnector(HttpClient.newConnection().compress(true)))
.build();并且WebClient是这样使用的：
response = webClient
.get()
.uri(URLDecoder.decode(someEndpoint.replace("\"", ""), CLIENT_ENCODING))
.header(AUTHORIZATION, BEARER + accessToken)
.accept(MediaType.APPLICATION_JSON)
.retrieve().bodyToMono(JsonNode.class).block();当我遵循这些解决方案时，我没有看到任何关于模拟的问题：How to mock Spring WebFlux WebClient?，但是模拟没有被使用。我如何模拟构建器/从构建器返回我的模拟？
回答 1
Stack Overflow用户
发布于 2021-11-05 19:03:16
您需要模拟WebClient的静态方法builder()。事实上，如果这个方法没有被mocked，mockito就不能编辑这个方法的行为。因此，不会使用模拟的webClient。要做到这一点，如果您使用maven，则需要在pom.xml中包含此依赖项。
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-inline</artifactId>
<version>3.4.6</version>
<scope>test</scope>
</dependency>这将在Mockito上提供mockStatic()方法，使用方法如下：
MockedStatic<WebClient> webClientStatic = Mockito.mockStatic(WebClient.class);
webClientStatic.when(WebClient::builder).thenReturn(webClientBuilder);webClientBuilder必须被模仿，因为我们需要改变它的方法build()的行为来返回你被模仿的webClient。
Mockito.when(webClientBuilder.build()).thenReturn(mockedWebClient);要在一个代码中恢复所有内容：
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.Mockito;
import org.mockito.junit.MockitoJUnitRunner;
import org.springframework.http.client.reactive.ReactorClientHttpConnector;
import org.springframework.web.reactive.function.client.ExchangeStrategies;
import org.springframework.web.reactive.function.client.WebClient;
import reactor.netty.http.client.HttpClient;
import org.mockito.MockedStatic;
@RunWith(MockitoJUnitRunner.class)
public class WebClientTest {
@Mock
private WebClient.Builder webClientBuilder;
@Mock
private WebClient mockedWebClient;
@Before
public void setup() {
Mockito.when(webClientBuilder.exchangeStrategies(Mockito.any(ExchangeStrategies.class))).thenReturn(webClientBuilder);
Mockito.when(webClientBuilder.clientConnector(Mockito.any(ReactorClientHttpConnector.class))).thenReturn(webClientBuilder);
Mockito.when(webClientBuilder.build()).thenReturn(mockedWebClient);
}
@Test
public void testWebClient() {
final MockedStatic<WebClient> webClientStatic = Mockito.mockStatic(WebClient.class);
webClientStatic.when(WebClient::builder).thenReturn(webClientBuilder);
final WebClient webClient = WebClient.builder()
.exchangeStrategies(ExchangeStrategies.builder()
.codecs(configurer -> configurer
.defaultCodecs()
.maxInMemorySize(16 * 1024 * 1024))
.build())
.clientConnector(new ReactorClientHttpConnector(HttpClient.newConnection().compress(true)))
.build();
//It throws error if webClient is not mockedWebClient
Assert.assertEquals(webClient, mockedWebClient);
}
}您可以对其进行测试。
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原文链接：
https://stackoverflow.com/questions/69857313
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