testhssfrow.java

java 读写word excel ppt

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   contributor license agreements.  See the NOTICE file distributed with
   this work for additional information regarding copyright ownership.
   The ASF licenses this file to You 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.poi.hssf.usermodel;

import junit.framework.TestCase;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;

import org.apache.poi.util.TempFile;

/**
 * Test HSSFRow is okay.
 *
 * @author Glen Stampoultzis (glens at apache.org)
 */
public class TestHSSFRow
        extends TestCase
{
    public TestHSSFRow(String s)
    {
        super(s);
    }

    public void testLastAndFirstColumns()
            throws Exception
    {
        HSSFWorkbook workbook = new HSSFWorkbook();
        HSSFSheet sheet = workbook.createSheet();
        HSSFRow row = sheet.createRow((short) 0);
        assertEquals(-1, row.getFirstCellNum());
        assertEquals(-1, row.getLastCellNum());

        row.createCell((short) 2);
        assertEquals(2, row.getFirstCellNum());
        assertEquals(2, row.getLastCellNum());

        row.createCell((short) 1);
        assertEquals(1, row.getFirstCellNum());
        assertEquals(2, row.getLastCellNum());

    }

    public void testRemoveCell()
            throws Exception
    {
        HSSFWorkbook workbook = new HSSFWorkbook();
        HSSFSheet sheet = workbook.createSheet();
        HSSFRow row = sheet.createRow((short) 0);
        assertEquals(-1, row.getLastCellNum());
        assertEquals(-1, row.getFirstCellNum());
        row.createCell((short) 1);
        assertEquals(1, row.getLastCellNum());
        assertEquals(1, row.getFirstCellNum());
        row.createCell((short) 3);
        assertEquals(3, row.getLastCellNum());
        assertEquals(1, row.getFirstCellNum());
        row.removeCell(row.getCell((short) 3));
        assertEquals(1, row.getLastCellNum());
        assertEquals(1, row.getFirstCellNum());
        row.removeCell(row.getCell((short) 1));
        assertEquals(-1, row.getLastCellNum());
        assertEquals(-1, row.getFirstCellNum());

        // check the row record actually writes it out as 0's
        byte[] data = new byte[100];
        row.getRowRecord().serialize(0, data);
        assertEquals(0, data[6]);
        assertEquals(0, data[8]);

        File file = TempFile.createTempFile("XXX", "XLS");
        FileOutputStream stream = new FileOutputStream(file);
        workbook.write(stream);
        stream.close();
        FileInputStream inputStream = new FileInputStream(file);
        workbook = new HSSFWorkbook(inputStream);
        sheet = workbook.getSheetAt(0);
        stream.close();
        file.delete();
        assertEquals(-1, sheet.getRow((short) 0).getLastCellNum());
        assertEquals(-1, sheet.getRow((short) 0).getFirstCellNum());


    }
    
    public void testRowBounds()
            throws Exception
    {
      HSSFWorkbook workbook = new HSSFWorkbook();
      HSSFSheet sheet = workbook.createSheet();
      //Test low row bound
      HSSFRow row = sheet.createRow( (short) 0);
      //Test low row bound exception      
      boolean caughtException = false;
      try {
        row = sheet.createRow(-1);        
      } catch (IndexOutOfBoundsException ex) {
        caughtException = true;
      }      
      assertTrue(caughtException);
      //Test high row bound      
      row = sheet.createRow(65535);     
      //Test high row bound exception           
      caughtException = false;
      try {
        row = sheet.createRow(65536);        
      } catch (IndexOutOfBoundsException ex) {
        caughtException = true;
      }      
      assertTrue(caughtException);
    }
    
}