/*
    *    Copyright 2009-2021 the original author or authors.
    *
    *    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 org.apache.ibatis.mapping;
  
  import static com.googlecode.catchexception.apis.BDDCatchException.*;
  import static org.assertj.core.api.BDDAssertions.then;
  
  import java.lang.reflect.Field;
  
  import org.apache.ibatis.builder.InitializingObject;
  import org.apache.ibatis.cache.Cache;
  import org.apache.ibatis.cache.CacheException;
  import org.apache.ibatis.cache.impl.PerpetualCache;
  import org.assertj.core.api.Assertions;
  import org.junit.jupiter.api.Test;
  
  class CacheBuilderTest {
  
    @Test
    void testInitializing() {
      InitializingCache cache = unwrap(new CacheBuilder("test").implementation(InitializingCache.class).build());
  
      Assertions.assertThat(cache.initialized).isTrue();
    }
  
    @Test
    void testInitializingFailure() {
      when(() -> new CacheBuilder("test").implementation(InitializingFailureCache.class).build());
      then(caughtException()).isInstanceOf(CacheException.class)
        .hasMessage("Failed cache initialization for 'test' on 'org.apache.ibatis.mapping.CacheBuilderTest$InitializingFailureCache'");
    }
  
    @SuppressWarnings("unchecked")
    private <T> T unwrap(Cache cache) {
      Field field;
      try {
        field = cache.getClass().getDeclaredField("delegate");
      } catch (NoSuchFieldException e) {
        throw new IllegalStateException(e);
      }
      try {
        field.setAccessible(true);
        return (T) field.get(cache);
      } catch (IllegalAccessException e) {
        throw new IllegalStateException(e);
      } finally {
        field.setAccessible(false);
      }
    }
  
    private static class InitializingCache extends PerpetualCache implements InitializingObject {
  
      private boolean initialized;
  
      public InitializingCache(String id) {
        super(id);
      }
  
      @Override
      public void initialize() {
        this.initialized = true;
      }
  
    }
  
    private static class InitializingFailureCache extends PerpetualCache implements InitializingObject {
  
      public InitializingFailureCache(String id) {
        super(id);
      }
  
      @Override
      public void initialize() {
        throw new IllegalStateException("error");
      }
  
    }
  
  }