Spring WebFlux Test Timeout on blocking read for 5000 MILLISECONDS

Test a Spring Webflux endpoint with the WebTestClient, and hits the following error messages. Is this possible to increase the timeout?

java.lang.IllegalStateException: Timeout on blocking read for 5000 MILLISECONDS
	at reactor.core.publisher.BlockingSingleSubscriber.blockingGet(BlockingSingleSubscriber.java:117)
	at reactor.core.publisher.Mono.block(Mono.java:1524)
	at org.springframework.test.web.reactive.server.ExchangeResult.formatBody(ExchangeResult.java:247)
	at org.springframework.test.web.reactive.server.ExchangeResult.toString(ExchangeResult.java:216)
	at java.base/java.lang.String.valueOf(String.java:2788)
	at java.base/java.lang.StringBuilder.append(StringBuilder.java:135)
	at org.springframework.test.web.reactive.server.ExchangeResult.assertWithDiagnostics(ExchangeResult.java:200)

Solution

By default, the WebTestClient will be timeout after 5 seconds. We can configure the timeout with @AutoConfigureWebTestClient

@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
@AutoConfigureWebTestClient(timeout = "10000")//10 seconds
public class TestCommentWebApplication {
    @Autowired
    private WebTestClient webClient;