/*
    *    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.optional_on_mapper_method;
  
  import static org.junit.jupiter.api.Assertions.*;
  import static org.mockito.Mockito.*;
  
  import java.io.Reader;
  import java.util.Optional;
  
  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.BeforeAll;
  import org.junit.jupiter.api.Test;
  import org.mockito.Mockito;
  
  /**
   * Tests for support the {@code java.util.Optional} as return type of mapper method.
   *
   * @since 3.5.0
   * @author Kazuki Shimizu
   */
  class OptionalOnMapperMethodTest {
  
    private static SqlSessionFactory sqlSessionFactory;
  
    @BeforeAll
    static void setUp() throws Exception {
      // create an SqlSessionFactory
      try (Reader reader = Resources
          .getResourceAsReader("org/apache/ibatis/submitted/optional_on_mapper_method/mybatis-config.xml")) {
        sqlSessionFactory = new SqlSessionFactoryBuilder().build(reader);
      }
  
      // populate in-memory database
      BaseDataTest.runScript(sqlSessionFactory.getConfiguration().getEnvironment().getDataSource(),
          "org/apache/ibatis/submitted/optional_on_mapper_method/CreateDB.sql");
    }
  
    @Test
    void returnNotNullOnAnnotation() {
      try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
        Mapper mapper = sqlSession.getMapper(Mapper.class);
        Optional<User> user = mapper.getUserUsingAnnotation(1);
        assertTrue(user.isPresent());
        assertEquals("User1", user.get().getName());
      }
    }
  
    @Test
    void returnNullOnAnnotation() {
      try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
        Mapper mapper = sqlSession.getMapper(Mapper.class);
        Optional<User> user = mapper.getUserUsingAnnotation(3);
        assertFalse(user.isPresent());
      }
    }
  
    @Test
    void returnNotNullOnXml() {
      try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
        Mapper mapper = sqlSession.getMapper(Mapper.class);
        Optional<User> user = mapper.getUserUsingXml(2);
        assertTrue(user.isPresent());
        assertEquals("User2", user.get().getName());
      }
    }
  
    @Test
    void returnNullOnXml() {
      try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
        Mapper mapper = sqlSession.getMapper(Mapper.class);
        Optional<User> user = mapper.getUserUsingXml(3);
        assertFalse(user.isPresent());
      }
    }
  
    @Test
    void returnOptionalFromSqlSession() {
      try (SqlSession sqlSession = Mockito.spy(sqlSessionFactory.openSession())) {
        User mockUser = new User();
        mockUser.setName("mock user");
        Optional<User> optionalMockUser = Optional.of(mockUser);
       doReturn(optionalMockUser).when(sqlSession).selectOne(any(String.class), any(Object.class));
 
       Mapper mapper = sqlSession.getMapper(Mapper.class);
       Optional<User> user = mapper.getUserUsingAnnotation(3);
       assertSame(optionalMockUser, user);
     }
   }
 
 }