Restore attributes for failed AND/OR request predicates

This commit restores the attributes when either of the predicates in
an AND/OR conjunction is false.

Issue: SPR-17210

spring-webflux/src/test/java/org/springframework/web/reactive/function/server/NestedRouteIntegrationTests.java

@@ -16,16 +16,23 @@
 
 package org.springframework.web.reactive.function.server;
 
+import java.util.Map;
+
 import org.junit.Test;
 import reactor.core.publisher.Mono;
 
+import org.springframework.http.HttpMethod;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.client.RestTemplate;
 
 import static org.junit.Assert.*;
-import static org.springframework.web.reactive.function.server.RequestPredicates.*;
-import static org.springframework.web.reactive.function.server.RouterFunctions.*;
+import static org.springframework.web.reactive.function.server.RequestPredicates.GET;
+import static org.springframework.web.reactive.function.server.RequestPredicates.all;
+import static org.springframework.web.reactive.function.server.RequestPredicates.method;
+import static org.springframework.web.reactive.function.server.RequestPredicates.path;
+import static org.springframework.web.reactive.function.server.RouterFunctions.nest;
+import static org.springframework.web.reactive.function.server.RouterFunctions.route;
 
 /**
  * @author Arjen Poutsma
@@ -45,7 +52,8 @@ public class NestedRouteIntegrationTests extends AbstractRouterFunctionIntegrati
 					route(GET("/bar"), nestedHandler::variables).and(
 					nest(GET("/{bar}"),
 								route(GET("/{baz}"), nestedHandler::variables))))
-				.andRoute(GET("/{qux}/quux"), nestedHandler::variables);
+				.andRoute(path("/{qux}/quux").and(method(HttpMethod.GET)), nestedHandler::variables)
+				.andRoute(all(), nestedHandler::variables);
 	}
 
 
@@ -89,7 +97,7 @@ public class NestedRouteIntegrationTests extends AbstractRouterFunctionIntegrati
 
 	// SPR 16692
 	@Test
-	public void removeFailedPathVariables() {
+	public void removeFailedNestedPathVariables() {
 		ResponseEntity<String> result =
 				restTemplate.getForEntity("http://localhost:" + port + "/qux/quux", String.class);
 
@@ -98,6 +106,17 @@ public class NestedRouteIntegrationTests extends AbstractRouterFunctionIntegrati
 
 	}
 
+	// SPR 17210
+	@Test
+	public void removeFailedPathVariablesAnd() {
+		ResponseEntity<String> result =
+				restTemplate.postForEntity("http://localhost:" + port + "/qux/quux", "", String.class);
+
+		assertEquals(HttpStatus.OK, result.getStatusCode());
+		assertEquals("{}", result.getBody());
+
+	}
+
 
 	private static class NestedHandler {
 
@@ -109,11 +128,15 @@ public class NestedRouteIntegrationTests extends AbstractRouterFunctionIntegrati
 			return ServerResponse.ok().syncBody("baz");
 		}
 
+		@SuppressWarnings("unchecked")
 		public Mono<ServerResponse> variables(ServerRequest request) {
-			assertEquals(request.pathVariables(),
-					request.attributes().get(RouterFunctions.URI_TEMPLATE_VARIABLES_ATTRIBUTE));
+			Map<String, String> pathVariables = request.pathVariables();
+			Map<String, String> attributePathVariables =
+					(Map<String, String>) request.attributes().get(RouterFunctions.URI_TEMPLATE_VARIABLES_ATTRIBUTE);
+			assertTrue( (pathVariables.equals(attributePathVariables))
+					|| (pathVariables.isEmpty() && (attributePathVariables == null)));
 
-			Mono<String> responseBody = Mono.just(request.pathVariables().toString());
+			Mono<String> responseBody = Mono.just(pathVariables.toString());
 			return ServerResponse.ok().body(responseBody, String.class);
 		}