/*
    *    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.associationtest;
  
  import java.io.Reader;
  import java.util.List;
  
  import org.apache.ibatis.BaseDataTest;
  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.Assertions;
  import org.junit.jupiter.api.BeforeAll;
  import org.junit.jupiter.api.Test;
  
  class AssociationTest {
  
    private static SqlSessionFactory sqlSessionFactory;
  
    @BeforeAll
    static void setUp() throws Exception {
      // create a SqlSessionFactory
      try (Reader reader = Resources.getResourceAsReader("org/apache/ibatis/submitted/associationtest/mybatis-config.xml")) {
        sqlSessionFactory = new SqlSessionFactoryBuilder().build(reader);
      }
  
      // populate in-memory database
      BaseDataTest.runScript(sqlSessionFactory.getConfiguration().getEnvironment().getDataSource(),
              "org/apache/ibatis/submitted/associationtest/CreateDB.sql");
    }
  
    @Test
    void shouldGetAllCars() {
      try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
        Mapper mapper = sqlSession.getMapper(Mapper.class);
        List<Car> cars = mapper.getCars();
        Assertions.assertEquals(4, cars.size());
        Assertions.assertEquals("VW", cars.get(0).getType());
        Assertions.assertNotNull(cars.get(0).getEngine());
        Assertions.assertNull(cars.get(0).getBrakes());
        Assertions.assertEquals("Opel", cars.get(1).getType());
        Assertions.assertNull(cars.get(1).getEngine());
        Assertions.assertNotNull(cars.get(1).getBrakes());
      }
    }
  
    @Test
    void shouldGetOneCarWithOneEngineAndBrakes() {
      try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
        Mapper mapper = sqlSession.getMapper(Mapper.class);
        List<Car> cars = mapper.getCars2();
        Assertions.assertEquals(1, cars.size());
        Assertions.assertNotNull(cars.get(0).getEngine());
        Assertions.assertNotNull(cars.get(0).getBrakes());
      }
    }
  
    @Test
    void shouldGetAllCarsNonUnique() {
      // this is a little weird - we might expect 4 objects back, but there are only
      // 1 distinct carid, so we get one back.
      try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
        Mapper mapper = sqlSession.getMapper(Mapper.class);
        List<Car> cars = mapper.getCars2();
        Assertions.assertEquals(1, cars.size());
      }
    }
  
    @Test
    void shouldGetAllCarsAndDetectAssociationType() {
      try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
        Mapper mapper = sqlSession.getMapper(Mapper.class);
        List<Car> cars = mapper.getCarsAndDetectAssociationType();
        Assertions.assertEquals(4, cars.size());
        Assertions.assertEquals("VW", cars.get(0).getType());
        Assertions.assertNotNull(cars.get(0).getEngine());
        Assertions.assertNull(cars.get(0).getBrakes());
        Assertions.assertEquals("Opel", cars.get(1).getType());
        Assertions.assertNull(cars.get(1).getEngine());
        Assertions.assertNotNull(cars.get(1).getBrakes());
      }
    }
  
  }