content: /*
   * Copyright 1999-2018 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.csp.sentinel.adapter.sofa.rpc.fallback;
  
  import com.alibaba.csp.sentinel.slots.block.BlockException;
  import com.alipay.sofa.rpc.core.request.SofaRequest;
  import com.alipay.sofa.rpc.core.response.SofaResponse;
  import com.alipay.sofa.rpc.filter.FilterInvoker;
  import org.junit.Test;
  
  import static org.junit.Assert.*;
  
  /**
   * Test cases for {@link SofaRpcFallbackRegistry}.
   *
   * @author cdfive
   */
  public class SofaRpcFallbackRegistryTest {
  
      @Test
      public void testDefaultfallback() {
          // Test get default provider fallback
          SofaRpcFallback providerFallback = SofaRpcFallbackRegistry.getProviderFallback();
          assertNotNull(providerFallback);
          assertTrue(providerFallback instanceof DefaultSofaRpcFallback);
  
          // Test get default consumer fallback
          SofaRpcFallback consumerFallback = SofaRpcFallbackRegistry.getConsumerFallback();
          assertNotNull(consumerFallback);
          assertTrue(consumerFallback instanceof DefaultSofaRpcFallback);
      }
  
      @Test
      public void testCustomFallback() {
          // Test invoke custom provider fallback
          SofaRpcFallbackRegistry.setProviderFallback(new SofaRpcFallback() {
              @Override
              public SofaResponse handle(FilterInvoker invoker, SofaRequest request, BlockException ex) {
                  SofaResponse response = new SofaResponse();
                  response.setAppResponse("test provider response");
                  return response;
              }
          });
          SofaResponse providerResponse = SofaRpcFallbackRegistry.getProviderFallback().handle(null, null, null);
          assertNotNull(providerResponse);
          assertEquals("test provider response", providerResponse.getAppResponse());
  
          // Test invoke custom consumer fallback
          SofaRpcFallbackRegistry.setConsumerFallback(new SofaRpcFallback() {
              @Override
              public SofaResponse handle(FilterInvoker invoker, SofaRequest request, BlockException ex) {
                  SofaResponse response = new SofaResponse();
                  response.setAppResponse("test consumer response");
                  return response;
              }
          });
          SofaResponse consumerResponse = SofaRpcFallbackRegistry.getConsumerFallback().handle(null, null, null);
          assertNotNull(consumerResponse);
          assertEquals("test consumer response", consumerResponse.getAppResponse());
  
          // Reset to default provider and consumer fallback
          SofaRpcFallbackRegistry.setProviderFallback(new DefaultSofaRpcFallback());
          SofaRpcFallbackRegistry.setConsumerFallback(new DefaultSofaRpcFallback());
      }
  }
  