package com.opencsv.bean;
   
   /*
    Copyright 2007 Kyle Miller.
   
    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.
   */
  
  import com.opencsv.CSVReader;
  import com.opencsv.bean.mocks.MockBean;
  import com.opencsv.exceptions.CsvRequiredFieldEmptyException;
  import org.junit.jupiter.api.*;
  
  import java.io.IOException;
  import java.io.StringReader;
  import java.util.List;
  import java.util.Locale;
  
  import static org.junit.jupiter.api.Assertions.*;
  
  public class HeaderColumnNameMappingStrategyTest {
  
     private static final String TEST_STRING = "name,orderNumber,num\n" +
           "kyle,abc123456,123\n" +
           "jimmy,def098765,456";
  
      private static final String TEST_EMPTY_STRING = "name,orderNumber,num\n" +
              "kyle,   ,123\n" +
              "jimmy,,456";
  
     private static final String TEST_QUOTED_STRING = "\"name\",\"orderNumber\",\"num\"\n" +
           "\"kyle\",\"abc123456\",\"123\"\n" +
           "\"jimmy\",\"def098765\",\"456\"";
  
     private HeaderColumnNameMappingStrategy<MockBean> strat;
     private static Locale systemLocale;
  
      @BeforeAll
      public static void storeSystemLocale() {
          systemLocale = Locale.getDefault();
      }
  
      @AfterEach
      public void setSystemLocaleBackToDefault() {
          Locale.setDefault(systemLocale);
      }
  
      @BeforeEach
     public void setUp() {
        Locale.setDefault(Locale.US);
        strat = new HeaderColumnNameMappingStrategy<>();
     }
  
     private List<MockBean> createTestParseResult(String parseString) {
        strat.setType(MockBean.class);
        CsvToBean<MockBean> csv = new CsvToBeanBuilder<MockBean>(new StringReader(parseString))
                .withMappingStrategy(strat).build();
        return csv.parse();
     }
  
     @Test
     public void testParse() {
        List<MockBean> list = createTestParseResult(TEST_STRING);
        assertNotNull(list);
        assertEquals(2, list.size());
        MockBean bean = list.get(0);
        assertEquals("kyle", bean.getName());
        assertEquals("abc123456", bean.getOrderNumber());
        assertEquals(123, bean.getNum());
     }
  
      @Test
      public void testParseWithEmptyField() {
          List<MockBean> list = createTestParseResult(TEST_EMPTY_STRING);
          assertNotNull(list);
          assertEquals(2, list.size());
          MockBean bean = list.get(0);
          assertEquals("kyle", bean.getName());
          assertEquals("   ", bean.getOrderNumber());
          assertEquals(123, bean.getNum());
          bean = list.get(1);
          assertEquals("jimmy", bean.getName());
          assertNotNull(bean.getOrderNumber());
          assertEquals("", bean.getOrderNumber());
          assertEquals(456, bean.getNum());
      }
  
     @Test
     public void testQuotedString() {
       List<MockBean> list = createTestParseResult(TEST_QUOTED_STRING);
       assertNotNull(list);
       assertEquals(2, list.size());
       MockBean bean = list.get(0);
       assertEquals("kyle", bean.getName());
       assertEquals("abc123456", bean.getOrderNumber());
       assertEquals(123, bean.getNum());
    }
 
    @Test
    public void testParseWithSpacesInHeader() {
       List<MockBean> list = createTestParseResult(TEST_STRING);
       assertNotNull(list);
       assertEquals(2, list.size());
       MockBean bean = list.get(0);
       assertEquals("kyle", bean.getName());
       assertEquals("abc123456", bean.getOrderNumber());
       assertEquals(123, bean.getNum());
    }
 
    @Test
    public void verifyColumnNames() throws IOException, CsvRequiredFieldEmptyException {
       strat = new HeaderColumnNameMappingStrategy<>();
       strat.setType(MockBean.class);
       assertNull(strat.getColumnName(0));
 
       StringReader reader = new StringReader(TEST_STRING);
 
       CSVReader csvReader = new CSVReader(reader);
       strat.captureHeader(csvReader);
 
       assertEquals("name", strat.getColumnName(0));
    }
    
    @Test
    public void throwsIllegalStateExceptionIfTypeNotSetBeforeParse() {
       strat = new HeaderColumnNameMappingStrategy<>();
       StringReader reader = new StringReader(TEST_STRING);
       CSVReader csvReader = new CSVReader(reader);
       CsvToBean<Object> csvtb = new CsvToBeanBuilder<>(csvReader)
               .withMappingStrategy(strat).build();
       try {
           csvtb.parse();
       }
       catch(RuntimeException e) {
           assertEquals(IllegalStateException.class, e.getCause().getClass());
       }
    }
 
     @Test
    public void throwsIllegalStateExceptionIfTypeNotSetBeforeGenerateHeaders() {
       strat = new HeaderColumnNameMappingStrategy<>();
         Assertions.assertThrows(IllegalStateException.class, () -> strat.generateHeader(new MockBean()));
    }
 }