Enables pathRouteWorksWithPercent.

Webflux now has a firewall that prevents uris with % percent in them. No enable it, one must customize the StrictServerWebExchangeFirewall

spring-cloud-gateway-server/src/test/java/org/springframework/cloud/gateway/handler/predicate/PathRoutePredicateFactoryTests.java

@@ -19,10 +19,11 @@
 import java.util.Arrays;
 import java.util.function.Predicate;
 
-import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.Test;
 
+import org.springframework.beans.BeansException;
 import org.springframework.beans.factory.annotation.Value;
+import org.springframework.beans.factory.config.BeanPostProcessor;
 import org.springframework.boot.SpringBootConfiguration;
 import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
 import org.springframework.boot.test.context.SpringBootTest;
@@ -34,13 +35,15 @@
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Import;
 import org.springframework.http.HttpHeaders;
+import org.springframework.security.web.server.WebFilterChainProxy;
+import org.springframework.security.web.server.firewall.StrictServerWebExchangeFirewall;
 import org.springframework.test.annotation.DirtiesContext;
 import org.springframework.web.server.ServerWebExchange;
 
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.springframework.boot.test.context.SpringBootTest.WebEnvironment.RANDOM_PORT;
 
-@SpringBootTest(webEnvironment = RANDOM_PORT)
+@SpringBootTest(webEnvironment = RANDOM_PORT, properties = "debug=true")
 @DirtiesContext
 public class PathRoutePredicateFactoryTests extends BaseWebClientTests {
 
@@ -93,7 +96,6 @@ public void mulitPathDslRouteWorks() {
 	}
 
 	@Test
-	@Disabled("until StrictServerWebExchangeFirewall is customizable")
 	public void pathRouteWorksWithPercent() {
 		testClient.get()
 			.uri("/abc/123%/function")
@@ -149,6 +151,22 @@ public static class TestConfig {
 		@Value("${test.uri}")
 		String uri;
 
+		// TODO: move to bean of StrictServerWebExchangeFirewall
+		@Bean
+		public BeanPostProcessor firewallPostProcessor() {
+			return new BeanPostProcessor() {
+				@Override
+				public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
+					if (bean instanceof WebFilterChainProxy webFilterChainProxy) {
+						StrictServerWebExchangeFirewall firewall = new StrictServerWebExchangeFirewall();
+						firewall.setAllowUrlEncodedPercent(true);
+						webFilterChainProxy.setFirewall(firewall);
+					}
+					return bean;
+				}
+			};
+		}
+
 		@Bean
 		public RouteLocator testRouteLocator(RouteLocatorBuilder builder) {
 			return builder.routes()