/*
    *    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.emptycollection;
  
  import java.io.Reader;
  import java.sql.Connection;
  import java.util.List;
  
  import org.apache.ibatis.io.Resources;
  import org.apache.ibatis.jdbc.ScriptRunner;
  import org.apache.ibatis.session.SqlSession;
  import org.apache.ibatis.session.SqlSessionFactory;
  import org.apache.ibatis.session.SqlSessionFactoryBuilder;
  import org.junit.jupiter.api.AfterEach;
  import org.junit.jupiter.api.Assertions;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  class DaoTest {
    private Connection conn;
    private Dao dao;
    private SqlSession sqlSession;
  
    @BeforeEach
    void setUp() throws Exception {
      try (Reader reader = Resources.getResourceAsReader("org/apache/ibatis/submitted/emptycollection/mybatis-config.xml")) {
        SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(reader);
        sqlSession = sqlSessionFactory.openSession();
      }
      conn = sqlSession.getConnection();
      ScriptRunner runner = new ScriptRunner(conn);
      runner.setLogWriter(null);
      dao = sqlSession.getMapper(Dao.class);
    }
  
    @AfterEach
    void tearDown() throws Exception {
      conn.close();
      sqlSession.close();
    }
  
    @Test
    void testWithEmptyList() {
      final List<TodoLists> actual = dao.selectWithEmptyList();
      Assertions.assertEquals(1, actual.size());
      final List<TodoItem> todoItems = actual.get(0).getTodoItems();
      Assertions.assertEquals(0, todoItems.size(), "expect " + todoItems + " to be empty");
    }
  
    @Test
    void testWithNonEmptyList() {
      final List<TodoLists> actual = dao.selectWithNonEmptyList();
      checkNonEmptyList(actual);
    }
  
    @Test
    void testWithNonEmptyList_noCollectionId() {
      final List<TodoLists> actual = dao.selectWithNonEmptyList_noCollectionId();
  
      checkNonEmptyList(actual);
    }
  
    private void checkNonEmptyList(final List<TodoLists> actual) {
  //  Assertions.assertEquals("[List(1)=[a description(1), a 2nd description(2)], List(2)=[a description(1)]]", actual.toString());
      Assertions.assertEquals(2, actual.size());
  
      Assertions.assertEquals(2, actual.get(0).getTodoItems().size());
      Assertions.assertEquals(1, actual.get(0).getTodoItems().get(0).getOrder());
      Assertions.assertEquals("a description", actual.get(0).getTodoItems().get(0).getDescription().trim());
      Assertions.assertEquals(2, actual.get(0).getTodoItems().get(1).getOrder());
      Assertions.assertEquals("a 2nd description", actual.get(0).getTodoItems().get(1).getDescription().trim());
  
      Assertions.assertEquals(1, actual.get(1).getTodoItems().size());
      Assertions.assertEquals(1, actual.get(1).getTodoItems().get(0).getOrder());
      Assertions.assertEquals("a description", actual.get(0).getTodoItems().get(0).getDescription().trim());
  
      // We should have gotten three item objects. The first item from the first list and the first item from
      // the second list have identical properties, but they should be distinct objects
      Assertions.assertNotSame(actual.get(0).getTodoItems().get(0), actual.get(1).getTodoItems().get(0));
    }
  }