content: /*
   * Copyright 1999-2023 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.api.selector;
  
  import com.alibaba.nacos.api.exception.NacosException;
  import com.alibaba.nacos.api.naming.pojo.Instance;
  import com.fasterxml.jackson.annotation.JsonInclude;
  import com.fasterxml.jackson.core.JsonProcessingException;
  import com.fasterxml.jackson.databind.DeserializationFeature;
  import com.fasterxml.jackson.databind.ObjectMapper;
  import com.fasterxml.jackson.databind.jsontype.NamedType;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNull;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  class NoneSelectorTest {
      
      ObjectMapper mapper = new ObjectMapper();
      
      @BeforeEach
      void setUp() throws Exception {
          mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
          mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
          mapper.registerSubtypes(new NamedType(NoneSelector.class, SelectorType.none.name()));
      }
      
      @Test
      void testSerialization() throws JsonProcessingException {
          NoneSelector selector = new NoneSelector();
          String actual = mapper.writeValueAsString(selector);
          assertTrue(actual.contains("\"type\":\"" + SelectorType.none.name() + "\""));
      }
      
      @Test
      void testDeserialization() throws JsonProcessingException {
          String json = "{\"type\":\"none\"}";
          AbstractSelector actual = mapper.readValue(json, AbstractSelector.class);
          assertEquals(SelectorType.none.name(), actual.getType());
      }
      
      @Test
      void testCommandMethod() throws NacosException {
          NoneSelector selector = new NoneSelector();
          assertNull(selector.parse(""));
          List<Instance> instances = new ArrayList<>();
          assertEquals(instances, selector.select(instances));
      }
  }