content: /*
   * Copyright 1999-2025 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.model;
  
  import com.fasterxml.jackson.core.type.TypeReference;
  import com.fasterxml.jackson.databind.DeserializationFeature;
  import com.fasterxml.jackson.databind.ObjectMapper;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  import java.util.Collections;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  class PageTest {
      
      private ObjectMapper mapper;
      
      private Page<String> page;
      
      @BeforeEach
      void setUp() {
          mapper = new ObjectMapper();
          mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
          page = new Page<>();
          page.setPagesAvailable(10);
          page.setPageNumber(1);
          page.setTotalCount(10);
          page.setPageItems(Collections.singletonList("test"));
      }
      
      @Test
      void setPageItems() {
          Page<Object> page = new Page<>();
          assertEquals(0, page.getPageItems().size());
          page.setPageItems(Collections.singletonList(new Object()));
          assertEquals(1, page.getPageItems().size());
      }
      
      @Test
      void testSerialize() throws Exception {
          String json =  mapper.writeValueAsString(page);
          assertTrue(json.contains("\"totalCount\":10"));
          assertTrue(json.contains("\"pageNumber\":1"));
          assertTrue(json.contains("\"pagesAvailable\":10"));
          assertTrue(json.contains("\"pageItems\":[\"test\"]"));
      }
      
      @Test
      void testDeserialize() throws Exception {
          String json =  "{\"totalCount\":10,\"pageNumber\":1,\"pagesAvailable\":10,\"pageItems\":[\"test\"]}";
          Page<String> page = mapper.readValue(json, new TypeReference<Page<String>>() {
          });
          assertEquals(10, page.getPagesAvailable());
          assertEquals(1, page.getPageNumber());
          assertEquals(10, page.getTotalCount());
          assertEquals(1, page.getPageItems().size());
          assertEquals("test", page.getPageItems().get(0));
      }
  }