/*
    *    Copyright 2009-2023 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
    *
    *       https://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();
      }
    }
  }