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.logging;
  
  import com.alibaba.nacos.common.logging.NacosLoggingAdapter;
  import com.alibaba.nacos.common.logging.NacosLoggingProperties;
  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.Mockito;
  import org.mockito.junit.jupiter.MockitoExtension;
  
  import java.lang.reflect.Field;
  import java.util.Properties;
  
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.mockito.Mockito.doThrow;
  
  @ExtendWith(MockitoExtension.class)
  class NacosLoggingTest {
      
      @Mock
      NacosLoggingAdapter loggingAdapter;
      
      NacosLoggingProperties loggingProperties;
      
      NacosLogging instance;
      
      @BeforeEach
      void setUp() throws NoSuchFieldException, IllegalAccessException {
          loggingProperties = new NacosLoggingProperties("", new Properties());
          instance = NacosLogging.getInstance();
          Field loggingPropertiesField = NacosLogging.class.getDeclaredField("loggingProperties");
          loggingPropertiesField.setAccessible(true);
          loggingPropertiesField.set(instance, loggingProperties);
      }
      
      @Test
      void testGetInstance() {
          NacosLogging instance = NacosLogging.getInstance();
          assertNotNull(instance);
      }
      
      @Test
      void testLoadConfiguration() throws NoSuchFieldException, IllegalAccessException {
          instance = NacosLogging.getInstance();
          Field nacosLogging = NacosLogging.class.getDeclaredField("loggingAdapter");
          nacosLogging.setAccessible(true);
          nacosLogging.set(instance, loggingAdapter);
          instance.loadConfiguration();
          Mockito.verify(loggingAdapter, Mockito.times(1)).loadConfiguration(loggingProperties);
      }
      
      @Test
      void testLoadConfigurationWithException() throws NoSuchFieldException, IllegalAccessException {
          instance = NacosLogging.getInstance();
          Field nacosLoggingField = NacosLogging.class.getDeclaredField("loggingAdapter");
          nacosLoggingField.setAccessible(true);
          NacosLoggingAdapter cachedLogging = (NacosLoggingAdapter) nacosLoggingField.get(instance);
          try {
              doThrow(new RuntimeException()).when(loggingAdapter).loadConfiguration(loggingProperties);
              nacosLoggingField.set(instance, loggingAdapter);
              instance.loadConfiguration();
              // without exception thrown
          } finally {
              nacosLoggingField.set(instance, cachedLogging);
          }
      }
  }