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.bean.mocks.MockBean;
  import org.apache.commons.lang3.StringUtils;
  import org.junit.jupiter.api.AfterEach;
  import org.junit.jupiter.api.BeforeAll;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  import java.io.StringReader;
  import java.util.List;
  import java.util.Locale;
  
  import static org.junit.jupiter.api.Assertions.*;
  
  public class ColumnPositionMappingStrategyTest {
     private ColumnPositionMappingStrategy<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 ColumnPositionMappingStrategy<>();
        strat.setType(MockBean.class);
     }
  
     @Test
     public void testParse() {
        String s = "" +
              "kyle,123456,emp123,1\n" +
              "jimmy,abcnum,cust09878,2";
  
        strat.setColumnMapping("name", "orderNumber", "id", "num");
  
        CsvToBean<MockBean> csv = new CsvToBeanBuilder<MockBean>(new StringReader(s))
                .withMappingStrategy(strat)
                .build();
        List<MockBean> list = csv.parse();
        assertNotNull(list);
        assertEquals(2, list.size());
        MockBean bean = list.get(0);
        assertEquals("kyle", bean.getName());
        assertEquals("123456", bean.getOrderNumber());
        assertEquals("emp123", bean.getId());
        assertEquals(1, bean.getNum());
     }
  
     @Test
     public void testParseWithTrailingSpaces() {
        String s = "" +
              "kyle  ,123456  ,emp123  ,  1   \n" +
              "jimmy,abcnum,cust09878,2   ";
  
        String[] columns = new String[]{"name", "orderNumber", "id", "num"};
        strat.setColumnMapping(columns);
  
        CsvToBean<MockBean> csv = new CsvToBeanBuilder<MockBean>(new StringReader(s))
                .withMappingStrategy(strat)
                .build();
        List<MockBean> list = csv.parse();
        assertNotNull(list);
        assertEquals(2, list.size());
        MockBean bean = list.get(0);
        assertEquals("kyle  ", bean.getName());
        assertEquals("123456  ", bean.getOrderNumber());
        assertEquals("emp123  ", bean.getId());
        assertEquals(1, bean.getNum());
     }
  
     @Test
     public void testParseEmptyInput() {
        String[] columns = new String[]{"name", "orderNumber", "id", "num"};
       strat.setColumnMapping(columns);
 
       CsvToBean<MockBean> csv = new CsvToBeanBuilder<MockBean>(new StringReader(StringUtils.EMPTY))
               .withMappingStrategy(strat)
               .build();
       List<MockBean> list = csv.parse();
       assertNotNull(list);
       assertTrue(list.isEmpty());
    }
 
    @Test
    public void testGetColumnMapping() {
       String[] columnMapping = strat.getColumnMapping();
       assertNotNull(columnMapping);
       assertEquals(0, columnMapping.length);
 
       String[] columns = new String[]{"name", "orderNumber", "id"};
       strat.setColumnMapping(columns);
 
       columnMapping = strat.getColumnMapping();
       assertNotNull(columnMapping);
       assertEquals(3, columnMapping.length);
       assertArrayEquals(columns, columnMapping);
 
    }
 
    @Test
    public void testGetColumnNames() {
 
       strat.setColumnMapping("name", null, "id");
 
       assertEquals("name", strat.getColumnName(0));
       assertNull(strat.getColumnName(1));
       assertEquals("id", strat.getColumnName(2));
       assertNull(strat.getColumnName(3));
    }
 
    @Test
    public void testGetColumnNamesArray() {
 
       strat.setColumnMapping("name", null, "id");
       String[] mapping = strat.getColumnMapping();
 
       assertEquals(3, mapping.length);
       assertEquals("name", mapping[0]);
       assertNull(mapping[1]);
       assertEquals("id", mapping[2]);
    }
 
    @Test
    public void getColumnNamesWhenNullArray() {
       strat.setColumnMapping((String[]) null);
 
       assertNull(strat.getColumnName(0));
       assertNull(strat.getColumnName(1));
       assertArrayEquals(new String[0], strat.getColumnMapping());
    }
 
    @Test
    public void getColumnNamesWhenNullColumnName() {
       String[] columns = {null};
       strat.setColumnMapping(columns);
 
       assertNull(strat.getColumnName(0));
       assertNull(strat.getColumnName(1));
       assertArrayEquals(columns, strat.getColumnMapping());
    }
 
    @Test
    public void getColumnNamesWhenEmptyMapping() {
       strat.setColumnMapping();
 
       assertNull(strat.getColumnName(0));
       assertArrayEquals(new String[0], strat.getColumnMapping());
    }
    
    @Test
    public void throwsIllegalStateExceptionIfTypeNotSet() {
       String englishErrorMessage = null;
       try {
           new CsvToBeanBuilder<MockBean>(new StringReader("doesnt,matter\nat,all"))
                   .withMappingStrategy(new ColumnPositionMappingStrategy<>())
                   .build().parse();
           fail("RuntimeException with inner IllegalStateException should have been thrown.");
       }
       catch(RuntimeException e) {
           assertEquals(IllegalStateException.class, e.getCause().getClass());
           englishErrorMessage = e.getCause().getLocalizedMessage();
       }
       
       // Now with a different locale
       try {
          new CsvToBeanBuilder<MockBean>(new StringReader("doesnt,matter\nat,all"))
                  .withMappingStrategy(new ColumnPositionMappingStrategy<>())
                  .withErrorLocale(Locale.GERMAN)
                  .build().parse();
           fail("RuntimeException with inner IllegalStateException should have been thrown.");
       }
       catch(RuntimeException e) {
           assertEquals(IllegalStateException.class, e.getCause().getClass());
           assertNotSame(englishErrorMessage, e.getCause().getLocalizedMessage());
       }
    }
 }