Add status/headers to WebMVC FragmentsRendering

See gh-33162

spring-webmvc/src/test/java/org/springframework/web/servlet/mvc/method/annotation/ModelAndViewMethodReturnValueHandlerTests.java

@@ -33,6 +33,7 @@ import org.springframework.web.servlet.mvc.support.RedirectAttributesModelMap;
 import org.springframework.web.servlet.view.FragmentsRendering;
 import org.springframework.web.servlet.view.RedirectView;
 import org.springframework.web.testfixture.servlet.MockHttpServletRequest;
+import org.springframework.web.testfixture.servlet.MockHttpServletResponse;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
@@ -56,7 +57,7 @@ class ModelAndViewMethodReturnValueHandlerTests {
 	void setup() throws Exception {
 		this.handler = new ModelAndViewMethodReturnValueHandler();
 		this.mavContainer = new ModelAndViewContainer();
-		this.webRequest = new ServletWebRequest(new MockHttpServletRequest());
+		this.webRequest = new ServletWebRequest(new MockHttpServletRequest(), new MockHttpServletResponse());
 		this.returnParamModelAndView = getReturnValueParam("modelAndView");
 	}
 
@@ -90,10 +91,13 @@ class ModelAndViewMethodReturnValueHandlerTests {
 
 	@Test
 	void handleFragmentsRendering() throws Exception {
-		FragmentsRendering rendering = FragmentsRendering.with("viewName").build();
+		FragmentsRendering rendering = FragmentsRendering.with("viewName")
+				.header("headerName", "headerValue")
+				.build();
 
 		handler.handleReturnValue(rendering, returnParamModelAndView, mavContainer, webRequest);
 		assertThat(mavContainer.getView()).isInstanceOf(SmartView.class);
+		assertThat(this.webRequest.getResponse().getHeader("headerName")).isEqualTo("headerValue");
 	}
 
 	@Test

spring-webmvc/src/test/java/org/springframework/web/servlet/view/DefaultFragmentsRenderingTests.java

@@ -17,7 +17,6 @@
 package org.springframework.web.servlet.view;
 
 import java.util.Collections;
-import java.util.List;
 import java.util.Locale;
 import java.util.Map;
 
@@ -28,7 +27,6 @@ import org.springframework.context.annotation.AnnotationConfigApplicationContext
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.context.support.ResourceBundleMessageSource;
-import org.springframework.web.servlet.ModelAndView;
 import org.springframework.web.servlet.view.script.ScriptTemplateConfigurer;
 import org.springframework.web.servlet.view.script.ScriptTemplateViewResolver;
 import org.springframework.web.testfixture.servlet.MockHttpServletRequest;
@@ -59,9 +57,9 @@ public class DefaultFragmentsRenderingTests {
 		MockHttpServletRequest request = new MockHttpServletRequest();
 		MockHttpServletResponse response = new MockHttpServletResponse();
 
-		DefaultFragmentsRendering view = new DefaultFragmentsRendering(List.of(
-				new ModelAndView("fragment1", Map.of("foo", "Foo")),
-				new ModelAndView("fragment2", Map.of("bar", "Bar"))));
+		FragmentsRendering view = FragmentsRendering.with("fragment1", Map.of("foo", "Foo"))
+				.fragment("fragment2", Map.of("bar", "Bar"))
+				.build();
 
 		view.resolveNestedViews(viewResolver, Locale.ENGLISH);
 		view.render(Collections.emptyMap(), request, response);