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.nacos.client.naming.backups.datasource;
  
  import com.alibaba.nacos.api.naming.pojo.ServiceInfo;
  import com.alibaba.nacos.client.naming.backups.FailoverData;
  import com.alibaba.nacos.client.naming.backups.FailoverSwitch;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  import java.lang.reflect.Field;
  import java.util.Map;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  class DiskFailoverDataSourceTest {
      
      DiskFailoverDataSource dataSource;
      
      @BeforeEach
      void setUp() {
          dataSource = new DiskFailoverDataSource();
      }
      
      @Test
      void testGetSwitchWithNonExistFailoverSwitchFile() {
          FailoverSwitch actual = dataSource.getSwitch();
          assertFalse(actual.getEnabled());
      }
      
      @Test
      void testGetSwitchForFailoverDisabled() throws NoSuchFieldException, IllegalAccessException {
          String dir = DiskFailoverDataSourceTest.class.getClassLoader().getResource("failover_test/disabled").getPath();
          injectFailOverDir(dir);
          assertFalse(dataSource.getSwitch().getEnabled());
          Map<String, FailoverData> actual = dataSource.getFailoverData();
          assertTrue(actual.isEmpty());
      }
      
      @Test
      void testGetSwitchForFailoverEnabled() throws NoSuchFieldException, IllegalAccessException {
          String dir = DiskFailoverDataSourceTest.class.getClassLoader().getResource("failover_test/enabled").getPath();
          injectFailOverDir(dir);
          assertTrue(dataSource.getSwitch().getEnabled());
          Map<String, FailoverData> actual = dataSource.getFailoverData();
          assertEquals(1, actual.size());
          assertTrue(actual.containsKey("legal@@with_name@@file"));
          assertEquals(FailoverData.DataType.naming, actual.get("legal@@with_name@@file").getDataType());
          assertEquals("1.1.1.1",
                  ((ServiceInfo) actual.get("legal@@with_name@@file").getData()).getHosts().get(0).getIp());
      }
      
      @Test
      void testGetFailoverDataForFailoverDisabled() {
          Map<String, FailoverData> actual = dataSource.getFailoverData();
          assertTrue(actual.isEmpty());
      }
      
      private void injectFailOverDir(String failoverDir) throws NoSuchFieldException, IllegalAccessException {
          Field failoverDirField = DiskFailoverDataSource.class.getDeclaredField("failoverDir");
          failoverDirField.setAccessible(true);
          failoverDirField.set(dataSource, failoverDir);
      }
      
      @Test
      void testGetSwitchForFailoverEnabledKeep() throws NoSuchFieldException, IllegalAccessException {
          String dir = DiskFailoverDataSourceTest.class.getClassLoader().getResource("failover_test/enabled").getPath();
          injectFailOverDir(dir);
          assertTrue(dataSource.getSwitch().getEnabled());
          assertTrue(dataSource.getSwitch().getEnabled());
      }
      
      @Test
      void testGetSwitchForFailoverDisabledKeep() throws NoSuchFieldException, IllegalAccessException {
          String dir = DiskFailoverDataSourceTest.class.getClassLoader().getResource("failover_test/disabled").getPath();
          injectFailOverDir(dir);
          assertFalse(dataSource.getSwitch().getEnabled());
          assertFalse(dataSource.getSwitch().getEnabled());
      }
      
      @Test
      void testGetSwitchWithException() throws NoSuchFieldException, IllegalAccessException {
          injectFailOverDir("invalid\\0path");
          assertFalse(dataSource.getSwitch().getEnabled());
      }
  }
  