Ensure the WebClient to be present before enabling the WebTestClientC…

…ontextCustomizer

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

@@ -39,7 +39,7 @@ public ContextCustomizer createContextCustomizer(Class<?> testClass,
 			List<ContextConfigurationAttributes> configAttributes) {
 		SpringBootTest springBootTest = TestContextAnnotationUtils.findMergedAnnotation(testClass,
 				SpringBootTest.class);
-		return (springBootTest != null) ? new WebTestClientContextCustomizer() : null;
+		return (springBootTest != null && isWebClientPresent()) ? new WebTestClientContextCustomizer() : null;
 	}
 
 	private boolean isWebClientPresent() {