Test support for HTTP range requests to endpoints returning a Resource

Closes gh-9978

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

@@ -447,7 +447,7 @@ public abstract class AbstractWebEndpointIntegrationTests<T extends Configurable
 
 	@Configuration
 	@Import(BaseConfiguration.class)
-	static class ResourceEndpointConfiguration {
+	protected static class ResourceEndpointConfiguration {
 
 		@Bean
 		public ResourceEndpoint resourceEndpoint() {

spring-boot-actuator/src/test/java/org/springframework/boot/actuate/endpoint/web/reactive/WebFluxEndpointIntegrationTests.java

@@ -31,12 +31,15 @@ import org.springframework.context.ApplicationListener;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.core.env.Environment;
+import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.server.reactive.HttpHandler;
 import org.springframework.web.cors.CorsConfiguration;
 import org.springframework.web.reactive.config.EnableWebFlux;
 import org.springframework.web.server.adapter.WebHttpHandlerBuilder;
 
+import static org.assertj.core.api.Assertions.assertThat;
+
 /**
  * Integration tests for web endpoints exposed using WebFlux.
  *
@@ -63,6 +66,18 @@ public class WebFluxEndpointIntegrationTests
 						.valueEquals("Access-Control-Allow-Methods", "GET,POST"));
 	}
 
+	@Test
+	public void readOperationsThatReturnAResourceSupportRangeRequests() {
+		load(ResourceEndpointConfiguration.class, (client) -> {
+			byte[] responseBody = client.get().uri("/resource")
+					.header("Range", "bytes=0-3").exchange().expectStatus()
+					.isEqualTo(HttpStatus.PARTIAL_CONTENT).expectHeader()
+					.contentType(MediaType.APPLICATION_OCTET_STREAM)
+					.returnResult(byte[].class).getResponseBodyContent();
+			assertThat(responseBody).containsExactly(0, 1, 2, 3);
+		});
+	}
+
 	@Override
 	protected ReactiveWebServerApplicationContext createApplicationContext(
 			Class<?>... config) {

spring-boot-actuator/src/test/java/org/springframework/boot/actuate/endpoint/web/servlet/MvcWebEndpointIntegrationTests.java

@@ -28,11 +28,14 @@ import org.springframework.boot.web.servlet.context.AnnotationConfigServletWebSe
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.core.env.Environment;
+import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.web.cors.CorsConfiguration;
 import org.springframework.web.servlet.DispatcherServlet;
 import org.springframework.web.servlet.config.annotation.EnableWebMvc;
 
+import static org.assertj.core.api.Assertions.assertThat;
+
 /**
  * Integration tests for web endpoints exposed using Spring MVC.
  *
@@ -59,6 +62,18 @@ public class MvcWebEndpointIntegrationTests extends
 						.valueEquals("Access-Control-Allow-Methods", "GET,POST"));
 	}
 
+	@Test
+	public void readOperationsThatReturnAResourceSupportRangeRequests() {
+		load(ResourceEndpointConfiguration.class, (client) -> {
+			byte[] responseBody = client.get().uri("/resource")
+					.header("Range", "bytes=0-3").exchange().expectStatus()
+					.isEqualTo(HttpStatus.PARTIAL_CONTENT).expectHeader()
+					.contentType(MediaType.APPLICATION_OCTET_STREAM)
+					.returnResult(byte[].class).getResponseBodyContent();
+			assertThat(responseBody).containsExactly(0, 1, 2, 3);
+		});
+	}
+
 	@Override
 	protected AnnotationConfigServletWebServerApplicationContext createApplicationContext(
 			Class<?>... config) {