adapter: Add test cases for Spring WebFlux HandlerFunction (#1678)

sentinel-adapter/sentinel-spring-webflux-adapter/src/test/java/com/alibaba/csp/sentinel/adapter/spring/webflux/SentinelWebFluxIntegrationTest.java

@@ -71,6 +71,30 @@ public class SentinelWebFluxIntegrationTest {
         assertEquals(1, cn.passQps(), 0.01);
     }
 
+    @Test
+    public void testWebFluxRouterFunction() throws Exception {
+
+        String url = "/router/hello";
+        this.webClient.get()
+                .uri(url)
+                .accept(MediaType.TEXT_PLAIN)
+                .exchange()
+                .expectStatus().isOk()
+                .expectBody(String.class).isEqualTo(HELLO_STR);
+
+        ClusterNode cn = ClusterBuilderSlot.getClusterNode(url);
+        assertNotNull(cn);
+        assertEquals(1, cn.passQps(), 0.01);
+
+        configureRulesFor(url, 0);
+        this.webClient.get()
+                .uri(url)
+                .accept(MediaType.TEXT_PLAIN)
+                .exchange()
+                .expectStatus().isEqualTo(HttpStatus.TOO_MANY_REQUESTS)
+                .expectBody(String.class).value(StringContains.containsString(BLOCK_MSG_PREFIX));
+    }
+
     @Test
     public void testCustomizedUrlCleaner() throws Exception {
         final String fooPrefix = "/foo/";

sentinel-adapter/sentinel-spring-webflux-adapter/src/test/java/com/alibaba/csp/sentinel/adapter/spring/webflux/test/WebFluxTestRouter.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright 1999-2020 Alibaba Group Holding Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.alibaba.csp.sentinel.adapter.spring.webflux.test;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.reactive.function.server.RouterFunction;
+import org.springframework.web.reactive.function.server.ServerResponse;
+
+import static org.springframework.web.reactive.function.BodyInserters.fromObject;
+import static org.springframework.web.reactive.function.server.RequestPredicates.GET;
+import static org.springframework.web.reactive.function.server.RouterFunctions.route;
+
+/**
+ * @author liqiangz
+ */
+@Configuration
+public class WebFluxTestRouter {
+
+    @Bean
+    RouterFunction<ServerResponse> routingFunction() {
+        return route(GET("/router/hello"),
+                req -> ServerResponse.ok().body(fromObject("Hello!")));
+    }
+}