/**
    *    Copyright 2009-2020 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.submitted.nested_query_cache;
  
  import static org.assertj.core.api.Assertions.assertThat;
  import static org.junit.jupiter.api.Assertions.*;
  
  import java.io.Reader;
  
  import org.apache.ibatis.BaseDataTest;
  import org.apache.ibatis.domain.blog.Author;
  import org.apache.ibatis.io.Resources;
  import org.apache.ibatis.session.SqlSession;
  import org.apache.ibatis.session.SqlSessionFactory;
  import org.apache.ibatis.session.SqlSessionFactoryBuilder;
  import org.junit.jupiter.api.BeforeAll;
  import org.junit.jupiter.api.Test;
  
  class NestedQueryCacheTest extends BaseDataTest {
  
    private static SqlSessionFactory sqlSessionFactory;
  
    @BeforeAll
    static void setUp() throws Exception {
      // create a SqlSessionFactory
      try (Reader reader = Resources.getResourceAsReader("org/apache/ibatis/submitted/nested_query_cache/MapperConfig.xml")) {
        sqlSessionFactory = new SqlSessionFactoryBuilder().build(reader);
      }
  
      createBlogDataSource();
    }
  
    @Test
    void testThatNestedQueryItemsAreRetrievedFromCache() {
      final Author author;
      try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
        final AuthorMapper authorMapper = sqlSession.getMapper(AuthorMapper.class);
        author = authorMapper.selectAuthor(101);
  
        // ensure that author is cached
        final Author cachedAuthor = authorMapper.selectAuthor(101);
        assertThat(author).isSameAs(cachedAuthor);
      }
  
      // open a new session
      try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
        final BlogMapper blogMapper = sqlSession.getMapper(BlogMapper.class);
  
        // ensure that nested author within blog is cached
        assertThat(blogMapper.selectBlog(1).getAuthor()).isSameAs(author);
        assertThat(blogMapper.selectBlogUsingConstructor(1).getAuthor()).isSameAs(author);
      }
    }
  
    @Test
    void testThatNestedQueryItemsAreRetrievedIfNotInCache() {
      Author author;
      try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
        final BlogMapper blogMapper = sqlSession.getMapper(BlogMapper.class);
        author = blogMapper.selectBlog(1).getAuthor();
  
        // ensure that nested author within blog is cached
        assertNotNull(blogMapper.selectBlog(1).getAuthor(), "blog author");
        assertNotNull(blogMapper.selectBlogUsingConstructor(1).getAuthor(), "blog author");
      }
  
      // open a new session
      try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
        final AuthorMapper authorMapper = sqlSession.getMapper(AuthorMapper.class);
        Author cachedAuthor = authorMapper.selectAuthor(101);
  
        // ensure that nested author within blog is cached
        assertThat(cachedAuthor).isSameAs(author);
      }
  
    }
  }