Allow a WebEndpointTest to only run against certain infrastructure

Closes gh-32054

spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/endpoint/web/test/WebEndpointTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2024 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -20,13 +20,18 @@ import java.lang.annotation.ElementType;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
+import java.util.List;
+import java.util.function.Function;
 
 import org.junit.jupiter.api.TestTemplate;
 import org.junit.jupiter.api.extension.ExtendWith;
 
+import org.springframework.boot.actuate.endpoint.web.test.WebEndpointTestInvocationContextProvider.WebEndpointsInvocationContext;
+import org.springframework.context.ConfigurableApplicationContext;
+
 /**
- * Signals that a test should be performed against all web endpoint implementations
- * (Jersey, Web MVC, and WebFlux)
+ * Signals that a test should be run against one or more of the web endpoint
+ * infrastructure implementations (Jersey, Web MVC, and WebFlux)
  *
  * @author Andy Wilkinson
  */
@@ -36,4 +41,42 @@ import org.junit.jupiter.api.extension.ExtendWith;
 @ExtendWith(WebEndpointTestInvocationContextProvider.class)
 public @interface WebEndpointTest {
 
+	/**
+	 * The infrastructure against which the test should run.
+	 * @return the infrastructure to run the tests against
+	 */
+	Infrastructure[] infrastructure() default { Infrastructure.JERSEY, Infrastructure.MVC, Infrastructure.WEBFLUX };
+
+	enum Infrastructure {
+
+		/**
+		 * Actuator running on the Jersey-based infrastructure.
+		 */
+		JERSEY("Jersey", WebEndpointTestInvocationContextProvider::createJerseyContext),
+
+		/**
+		 * Actuator running on the WebMVC-based infrastructure.
+		 */
+		MVC("WebMvc", WebEndpointTestInvocationContextProvider::createWebMvcContext),
+
+		/**
+		 * Actuator running on the WebFlux-based infrastructure.
+		 */
+		WEBFLUX("WebFlux", WebEndpointTestInvocationContextProvider::createWebFluxContext);
+
+		private final String name;
+
+		private final Function<List<Class<?>>, ConfigurableApplicationContext> contextFactory;
+
+		Infrastructure(String name, Function<List<Class<?>>, ConfigurableApplicationContext> contextFactory) {
+			this.name = name;
+			this.contextFactory = contextFactory;
+		}
+
+		WebEndpointsInvocationContext createInvocationContext() {
+			return new WebEndpointsInvocationContext(this.name, this.contextFactory);
+		}
+
+	}
+
 }

spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/endpoint/web/test/WebEndpointTestInvocationContextProvider.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2023 the original author or authors.
+ * Copyright 2012-2024 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -36,6 +36,7 @@ import org.junit.jupiter.api.extension.ParameterContext;
 import org.junit.jupiter.api.extension.ParameterResolver;
 import org.junit.jupiter.api.extension.TestTemplateInvocationContext;
 import org.junit.jupiter.api.extension.TestTemplateInvocationContextProvider;
+import org.junit.platform.commons.util.AnnotationUtils;
 
 import org.springframework.boot.actuate.endpoint.invoke.convert.ConversionServiceParameterValueMapper;
 import org.springframework.boot.actuate.endpoint.web.EndpointLinksResolver;
@@ -45,6 +46,7 @@ import org.springframework.boot.actuate.endpoint.web.annotation.WebEndpointDisco
 import org.springframework.boot.actuate.endpoint.web.jersey.JerseyEndpointResourceFactory;
 import org.springframework.boot.actuate.endpoint.web.reactive.WebFluxEndpointHandlerMapping;
 import org.springframework.boot.actuate.endpoint.web.servlet.WebMvcEndpointHandlerMapping;
+import org.springframework.boot.actuate.endpoint.web.test.WebEndpointTest.Infrastructure;
 import org.springframework.boot.autoconfigure.ImportAutoConfiguration;
 import org.springframework.boot.autoconfigure.http.HttpMessageConvertersAutoConfiguration;
 import org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration;
@@ -91,16 +93,14 @@ class WebEndpointTestInvocationContextProvider implements TestTemplateInvocation
 	@Override
 	public Stream<TestTemplateInvocationContext> provideTestTemplateInvocationContexts(
 			ExtensionContext extensionContext) {
-		return Stream.of(
-				new WebEndpointsInvocationContext("Jersey",
-						WebEndpointTestInvocationContextProvider::createJerseyContext),
-				new WebEndpointsInvocationContext("WebMvc",
-						WebEndpointTestInvocationContextProvider::createWebMvcContext),
-				new WebEndpointsInvocationContext("WebFlux",
-						WebEndpointTestInvocationContextProvider::createWebFluxContext));
+		WebEndpointTest webEndpointTest = AnnotationUtils
+			.findAnnotation(extensionContext.getRequiredTestMethod(), WebEndpointTest.class)
+			.orElseThrow(() -> new IllegalStateException("Unable to find WebEndpointTest annotation on %s"
+				.formatted(extensionContext.getRequiredTestMethod())));
+		return Stream.of(webEndpointTest.infrastructure()).distinct().map(Infrastructure::createInvocationContext);
 	}
 
-	private static ConfigurableApplicationContext createJerseyContext(List<Class<?>> classes) {
+	static ConfigurableApplicationContext createJerseyContext(List<Class<?>> classes) {
 		AnnotationConfigServletWebServerApplicationContext context = new AnnotationConfigServletWebServerApplicationContext();
 		classes.add(JerseyEndpointConfiguration.class);
 		context.register(ClassUtils.toClassArray(classes));
@@ -108,7 +108,7 @@ class WebEndpointTestInvocationContextProvider implements TestTemplateInvocation
 		return context;
 	}
 
-	private static ConfigurableApplicationContext createWebMvcContext(List<Class<?>> classes) {
+	static ConfigurableApplicationContext createWebMvcContext(List<Class<?>> classes) {
 		AnnotationConfigServletWebServerApplicationContext context = new AnnotationConfigServletWebServerApplicationContext();
 		classes.add(WebMvcEndpointConfiguration.class);
 		context.register(ClassUtils.toClassArray(classes));
@@ -116,7 +116,7 @@ class WebEndpointTestInvocationContextProvider implements TestTemplateInvocation
 		return context;
 	}
 
-	private static ConfigurableApplicationContext createWebFluxContext(List<Class<?>> classes) {
+	static ConfigurableApplicationContext createWebFluxContext(List<Class<?>> classes) {
 		AnnotationConfigReactiveWebServerApplicationContext context = new AnnotationConfigReactiveWebServerApplicationContext();
 		classes.add(WebFluxEndpointConfiguration.class);
 		context.register(ClassUtils.toClassArray(classes));