/*
    *    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.binding;
  
  import static org.assertj.core.api.Assertions.assertThat;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import javax.sql.DataSource;
  
  import org.apache.ibatis.BaseDataTest;
  import org.apache.ibatis.domain.blog.Author;
  import org.apache.ibatis.domain.blog.Post;
  import org.apache.ibatis.domain.blog.Section;
  import org.apache.ibatis.executor.BatchResult;
  import org.apache.ibatis.mapping.Environment;
  import org.apache.ibatis.session.*;
  import org.apache.ibatis.transaction.TransactionFactory;
  import org.apache.ibatis.transaction.jdbc.JdbcTransactionFactory;
  import org.junit.jupiter.api.BeforeAll;
  import org.junit.jupiter.api.Test;
  
  class FlushTest {
      private static SqlSessionFactory sqlSessionFactory;
  
      @BeforeAll
      static void setup() throws Exception {
          DataSource dataSource = BaseDataTest.createBlogDataSource();
          TransactionFactory transactionFactory = new JdbcTransactionFactory();
          Environment environment = new Environment("Production", transactionFactory, dataSource);
          Configuration configuration = new Configuration(environment);
          configuration.setDefaultExecutorType(ExecutorType.BATCH);
          configuration.getTypeAliasRegistry().registerAlias(Post.class);
          configuration.getTypeAliasRegistry().registerAlias(Author.class);
          configuration.addMapper(BoundAuthorMapper.class);
          sqlSessionFactory = new SqlSessionFactoryBuilder().build(configuration);
      }
  
      @Test
      void invokeFlushStatementsViaMapper() {
          try (SqlSession session = sqlSessionFactory.openSession()) {
  
              BoundAuthorMapper mapper = session.getMapper(BoundAuthorMapper.class);
              Author author = new Author(-1, "cbegin", "******", "cbegin@nowhere.com", "N/A", Section.NEWS);
              List<Integer> ids = new ArrayList<>();
              mapper.insertAuthor(author);
              ids.add(author.getId());
              mapper.insertAuthor(author);
              ids.add(author.getId());
              mapper.insertAuthor(author);
              ids.add(author.getId());
              mapper.insertAuthor(author);
              ids.add(author.getId());
              mapper.insertAuthor(author);
              ids.add(author.getId());
  
              // test
              List<BatchResult> results = mapper.flush();
  
              assertThat(results.size()).isEqualTo(1);
              assertThat(results.get(0).getUpdateCounts().length).isEqualTo(ids.size());
  
              for (int id : ids) {
                  Author selectedAuthor = mapper.selectAuthor(id);
                  assertNotNull(selectedAuthor, id + " is not found.");
              }
  
              session.rollback();
          }
  
      }
  
  }