For the latest stable version, please use Spring Security 6.2.10!

WebTestClient Security Setup

The basic setup looks like this:

import static org.springframework.security.test.web.reactive.server.SecurityMockServerConfigurers.springSecurity;
import static org.springframework.web.reactive.function.client.ExchangeFilterFunctions.basicAuthentication;

@ExtendWith(SpringExtension.class)
@ContextConfiguration(classes = HelloWebfluxMethodApplication.class)
public class HelloWebfluxMethodApplicationTests {
	@Autowired
	ApplicationContext context;

	WebTestClient rest;

	@BeforeEach
	public void setup() {
		this.rest = WebTestClient
			.bindToApplicationContext(this.context)
			// add Spring Security test Support
			.apply(springSecurity())
			.configureClient()
			.filter(basicAuthentication("user", "password"))
			.build();
	}
	// ...
}