Replace calls to verifyComplete() to avoid indefinite blocking

See gh-35915

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/rsocket/netty/NettyRSocketServerFactoryTests.java

@@ -18,6 +18,7 @@ package org.springframework.boot.rsocket.netty;
 
 import java.net.InetSocketAddress;
 import java.nio.channels.ClosedChannelException;
+import java.time.Duration;
 import java.util.Arrays;
 import java.util.concurrent.Callable;
 
@@ -194,7 +195,7 @@ class NettyRSocketServerFactoryTests {
 	private void checkEchoRequest() {
 		String payload = "test payload";
 		Mono<String> response = this.requester.route("test").data(payload).retrieveMono(String.class);
-		StepVerifier.create(response).expectNext(payload).verifyComplete();
+		StepVerifier.create(response).expectNext(payload).expectComplete().verify(Duration.ofSeconds(5));
 	}
 
 	private void testBasicSslWithKeyStore(String keyStore, String keyPassword, Transport transport) {

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/web/embedded/netty/NettyReactiveWebServerFactoryTests.java

@@ -110,7 +110,7 @@ class NettyReactiveWebServerFactoryTests extends AbstractReactiveWebServerFactor
 	void whenSslIsConfiguredWithAValidAliasARequestSucceeds() {
 		Mono<String> result = testSslWithAlias("test-alias");
 		StepVerifier.setDefaultTimeout(Duration.ofSeconds(30));
-		StepVerifier.create(result).expectNext("Hello World").verifyComplete();
+		StepVerifier.create(result).expectNext("Hello World").expectComplete().verify(Duration.ofSeconds(5));
 	}
 
 	@Test

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/web/reactive/result/view/MustacheViewTests.java

@@ -55,7 +55,7 @@ class MustacheViewTests {
 			.block(Duration.ofSeconds(30));
 		StepVerifier.create(exchange.getResponse().getBodyAsString())
 			.assertNext((body) -> assertThat(body).isEqualToIgnoringWhitespace("Hello Spring"))
-			.verifyComplete();
+			.expectComplete().verify(Duration.ofSeconds(5));
 	}
 
 }

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/web/reactive/server/AbstractReactiveWebServerFactoryTests.java

@@ -194,7 +194,7 @@ public abstract class AbstractReactiveWebServerFactoryTests {
 			.bodyToMono(String.class);
 
 		StepVerifier.setDefaultTimeout(Duration.ofSeconds(30));
-		StepVerifier.create(result).expectNext("Hello World").verifyComplete();
+		StepVerifier.create(result).expectNext("Hello World").expectComplete().verify(Duration.ofSeconds(5));
 	}
 
 	@Test