我需要对使用WebClient
的类进行单元测试。有什么好的方法来处理WebClient吗?
使用RestTemplate
,我可以轻松使用Mockito。模拟WebClient有点乏味,因为深度 stub 无法与WebClient一起使用...
我想测试我的代码是否提供正确的标题...
缩短的示例代码:
public class MyOperations {
private final WebClient webClient;
public MyOperations(WebClient webClient) {
this.webClient = webClient;
}
public Mono<ResponseEntity<String>> get( URI uri) {
return webClient.get()
.uri(uri)
.headers(computeHeaders())
.accept(MediaType.APPLICATION_JSON)
.retrieve().toEntity(String.class);
}
private HttpHeaders computeHeaders() {
...
}
}
最佳答案
这是针对单位,而不是集成测试...
在中实现,在Kotlin的中实现,虽然有些初级,但是很有效。可以从下面的这段代码中提取想法
首先,一个 WebClient kotlin扩展
import org.mockito.ArgumentMatchers.anyString
import org.mockito.Mockito.*
import org.springframework.web.reactive.function.client.WebClient
import org.springframework.web.reactive.function.client.WebClientResponseException
import reactor.core.publisher.toMono
fun WebClient.mockAndReturn(data: Any) {
val uriSpec = mock(WebClient.RequestBodyUriSpec::class.java)
doReturn(uriSpec).`when`(this).get()
doReturn(uriSpec).`when`(this).post()
...
val headerSpec = mock(WebClient.RequestBodyUriSpec::class.java)
doReturn(headerSpec).`when`(uriSpec).uri(anyString())
doReturn(headerSpec).`when`(uriSpec).uri(anyString(), anyString())
doReturn(headerSpec).`when`(uriSpec).uri(anyString(), any())
doReturn(headerSpec).`when`(headerSpec).accept(any())
doReturn(headerSpec).`when`(headerSpec).header(any(), any())
doReturn(headerSpec).`when`(headerSpec).contentType(any())
doReturn(headerSpec).`when`(headerSpec).body(any())
val clientResponse = mock(WebClient.ResponseSpec::class.java)
doReturn(clientResponse).`when`(headerSpec).retrieve()
doReturn(data.toMono()).`when`(clientResponse).bodyToMono(data.javaClass)
}
fun WebClient.mockAndThrow() {
doThrow(WebClientResponseException::class.java).`when`(this).get()
doThrow(WebClientResponseException::class.java).`when`(this).post()
...
}
然后,单元测试
class MyRepositoryTest {
lateinit var client: WebClient
lateinit var repository: MyRepository
@BeforeEach
fun setUp() {
client = mock(WebClient::class.java)
repository = MyRepository(client)
}
@Test
fun getError() {
assertThrows(WebClientResponseException::class.java, {
client.mockAndThrow()
repository.get("x")
})
}
@Test
fun get() {
val myType = MyType()
client.mockAndReturn(myType)
assertEquals(myType, repository.get("x").block())
}
}
注意:在JUnit 5上的测试
关于spring-webflux - 如何验证/测试WebClient使用情况,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/44608983/