/*
    *    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.submitted.flush_statement_npe;
  
  import java.io.Reader;
  
  import org.apache.ibatis.BaseDataTest;
  import org.apache.ibatis.io.Resources;
  import org.apache.ibatis.session.ExecutorType;
  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 FlushStatementNpeTest {
  
      private static SqlSessionFactory sqlSessionFactory;
  
      @BeforeAll
      static void initDatabase() throws Exception {
          try (Reader reader = Resources.getResourceAsReader("org/apache/ibatis/submitted/flush_statement_npe/ibatisConfig.xml")) {
              sqlSessionFactory = new SqlSessionFactoryBuilder().build(reader);
          }
  
          BaseDataTest.runScript(sqlSessionFactory.getConfiguration().getEnvironment().getDataSource(),
                  "org/apache/ibatis/submitted/flush_statement_npe/CreateDB.sql");
      }
  
      @Test
      void testSameUpdateAfterCommitSimple() {
          try (SqlSession sqlSession = sqlSessionFactory.openSession(ExecutorType.SIMPLE)) {
              PersonMapper personMapper = sqlSession.getMapper(PersonMapper.class);
              Person person = personMapper.selectById(1);
              person.setFirstName("Simone");
  
              // Execute first update then commit.
              personMapper.update(person);
              sqlSession.commit();
  
              // Execute same update a second time. This used to raise an NPE.
              personMapper.update(person);
              sqlSession.commit();
          }
      }
      @Test
      void testSameUpdateAfterCommitReuse() {
          try (SqlSession sqlSession = sqlSessionFactory.openSession(ExecutorType.REUSE)) {
              PersonMapper personMapper = sqlSession.getMapper(PersonMapper.class);
              Person person = personMapper.selectById(1);
              person.setFirstName("Simone");
  
              // Execute first update then commit.
              personMapper.update(person);
              sqlSession.commit();
  
              // Execute same update a second time. This used to raise an NPE.
              personMapper.update(person);
              sqlSession.commit();
          }
      }
      @Test
      void testSameUpdateAfterCommitBatch() {
          try (SqlSession sqlSession = sqlSessionFactory.openSession(ExecutorType.BATCH)) {
              PersonMapper personMapper = sqlSession.getMapper(PersonMapper.class);
              Person person = personMapper.selectById(1);
              person.setFirstName("Simone");
  
              // Execute first update then commit.
              personMapper.update(person);
              sqlSession.commit();
  
              // Execute same update a second time. This used to raise an NPE.
              personMapper.update(person);
              sqlSession.commit();
          }
      }
  }