Set status code on DefaultRenderingBuilder for RedirectView

See gh-33498

spring-webflux/src/main/java/org/springframework/web/reactive/result/view/DefaultRenderingBuilder.java

@@ -85,6 +85,9 @@ class DefaultRenderingBuilder implements Rendering.RedirectBuilder {
 	@Override
 	public DefaultRenderingBuilder status(HttpStatusCode status) {
 		this.status = status;
+		if (this.view instanceof RedirectView) {
+			((RedirectView) this.view).setStatusCode(status);
+		}
 		return this;
 	}
 

spring-webflux/src/test/java/org/springframework/web/reactive/result/view/DefaultRenderingBuilderTests.java

@@ -126,6 +126,15 @@ class DefaultRenderingBuilderTests {
 		assertThat(((RedirectView) view).isPropagateQuery()).isTrue();
 	}
 
+	@Test
+	void redirectWithCustomStatus() {
+		Rendering rendering = Rendering.redirectTo("foo").status(HttpStatus.MOVED_PERMANENTLY).build();
+
+		Object view = rendering.view();
+		assertThat(view.getClass()).isEqualTo(RedirectView.class);
+		assertThat(((RedirectView) view).statusCode()).isEqualTo(HttpStatus.MOVED_PERMANENTLY);
+	}
+
 
 	private static class Foo {}