content: /*
   *  Copyright 1999-2021 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
   *
   *       http://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.nacos.core.control.remote;
  
  import com.alibaba.nacos.api.exception.NacosException;
  import com.alibaba.nacos.api.exception.runtime.NacosRuntimeException;
  import com.alibaba.nacos.api.remote.request.HealthCheckRequest;
  import com.alibaba.nacos.api.remote.request.Request;
  import com.alibaba.nacos.api.remote.request.RequestMeta;
  import com.alibaba.nacos.api.remote.response.Response;
  import com.alibaba.nacos.core.remote.HealthCheckRequestHandler;
  import com.alibaba.nacos.plugin.control.ControlManagerCenter;
  import com.alibaba.nacos.plugin.control.tps.TpsControlManager;
  import com.alibaba.nacos.plugin.control.tps.request.TpsCheckRequest;
  import com.alibaba.nacos.plugin.control.tps.response.TpsCheckResponse;
  import org.junit.jupiter.api.AfterEach;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.extension.ExtendWith;
  import org.mockito.Mock;
  import org.mockito.MockedStatic;
  import org.mockito.Mockito;
  import org.mockito.junit.jupiter.MockitoExtension;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertNull;
  import static org.mockito.ArgumentMatchers.any;
  
  @ExtendWith(MockitoExtension.class)
  class TpsControlRequestFilterTest {
      
      TpsControlRequestFilter tpsControlRequestFilter;
      
      MockedStatic<ControlManagerCenter> controlManagerCenterMockedStatic;
      
      @Mock
      private ControlManagerCenter controlManagerCenter;
      
      @Mock
      private TpsControlManager tpsControlManager;
      
      @BeforeEach
      void before() {
          tpsControlRequestFilter = new TpsControlRequestFilter();
          controlManagerCenterMockedStatic = Mockito.mockStatic(ControlManagerCenter.class);
          controlManagerCenterMockedStatic.when(() -> ControlManagerCenter.getInstance()).thenReturn(controlManagerCenter);
          Mockito.when(controlManagerCenter.getTpsControlManager()).thenReturn(tpsControlManager);
          
      }
      
      @AfterEach
      void after() {
          controlManagerCenterMockedStatic.close();
      }
      
      /**
       * test tps check passed ,response is null.
       */
      @Test
      void testPass() {
          RemoteTpsCheckRequestParserRegistry.register(new RemoteTpsCheckRequestParser() {
              @Override
              public TpsCheckRequest parse(Request request, RequestMeta meta) {
                  return new TpsCheckRequest();
              }
              
              @Override
              public String getPointName() {
                  return "HealthCheck";
              }
              
              @Override
              public String getName() {
                  return "HealthCheck";
              }
          });
          HealthCheckRequest healthCheckRequest = new HealthCheckRequest();
          RequestMeta requestMeta = new RequestMeta();
          TpsCheckResponse tpsCheckResponse = new TpsCheckResponse(true, 200, "success");
          Mockito.when(tpsControlManager.check(any(TpsCheckRequest.class))).thenReturn(tpsCheckResponse);
          Response filterResponse = tpsControlRequestFilter.filter(healthCheckRequest, requestMeta, HealthCheckRequestHandler.class);
          assertNull(filterResponse);
      }
      
      /**
       * test tps check rejected ,response is not null.
       */
      @Test
      void testRejected() {
          HealthCheckRequest healthCheckRequest = new HealthCheckRequest();
          RequestMeta requestMeta = new RequestMeta();
          TpsCheckResponse tpsCheckResponse = new TpsCheckResponse(false, 5031, "rejected");
          Mockito.when(tpsControlManager.check(any(TpsCheckRequest.class))).thenReturn(tpsCheckResponse);
          Response filterResponse = tpsControlRequestFilter.filter(healthCheckRequest, requestMeta, HealthCheckRequestHandler.class);
          assertNotNull(filterResponse);
          assertEquals(NacosException.OVER_THRESHOLD, filterResponse.getErrorCode());
          assertEquals("Tps Flow restricted:" + tpsCheckResponse.getMessage(), filterResponse.getMessage());
      }
      
      /**
       * test tps check exception ,return null skip.
       */
      @Test
      void testTpsCheckException() {
          HealthCheckRequest healthCheckRequest = new HealthCheckRequest();
          RequestMeta requestMeta = new RequestMeta();
          Mockito.when(tpsControlManager.check(any(TpsCheckRequest.class))).thenThrow(new NacosRuntimeException(12345));
          Response filterResponse = tpsControlRequestFilter.filter(healthCheckRequest, requestMeta, HealthCheckRequestHandler.class);
          assertNull(filterResponse);
      }
  }
  
  