Adds path predicate regex test

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

@@ -88,6 +88,14 @@ public class PathRoutePredicateFactoryTests extends BaseWebClientTests {
 				.valueEquals(ROUTE_ID_HEADER, "path_test");
 	}
 
+	@Test
+	public void pathRouteWorksWithRegex() {
+		testClient.get().uri("/regex/123").header(HttpHeaders.HOST, "www.pathregex.org").exchange().expectStatus()
+				.isOk().expectHeader()
+				.valueEquals(HANDLER_MAPPER_HEADER, RoutePredicateHandlerMapping.class.getSimpleName()).expectHeader()
+				.valueEquals(ROUTE_ID_HEADER, "path_regex");
+	}
+
 	@Test
 	public void matchOptionalTrailingSeparatorCopiedToMatchTrailingSlash() {
 		Config config = new Config().setPatterns(Arrays.asList("patternA", "patternB")).setMatchTrailingSlash(false);

spring-cloud-gateway-server/src/test/resources/application.yml

@@ -262,6 +262,15 @@ spring:
         filters:
         - SetPath=/anything/multi{num}
 
+      # =====================================
+      - id: path_regex
+        uri: ${test.uri}
+        predicates:
+          - Host=**.pathregex.org
+          - Path=/regex/{digits:\d+}
+        filters:
+          - SetPath=/anything/{digits}
+
       # =====================================
       - id: redirect_to_test
         uri: ${test.uri}