/* ====================================================================
   Licensed to the Apache Software Foundation (ASF) under one or more
   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 static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Calendar;
import java.util.Date;
import java.util.Iterator;
import java.util.List;

import org.apache.poi.EncryptedDocumentException;
import org.apache.poi.hssf.HSSFITestDataProvider;
import org.apache.poi.hssf.HSSFTestDataSamples;
import org.apache.poi.hssf.OldExcelFormatException;
import org.apache.poi.hssf.extractor.ExcelExtractor;
import org.apache.poi.hssf.model.InternalSheet;
import org.apache.poi.hssf.model.InternalWorkbook;
import org.apache.poi.hssf.record.CellValueRecordInterface;
import org.apache.poi.hssf.record.EmbeddedObjectRefSubRecord;
import org.apache.poi.hssf.record.NameRecord;
import org.apache.poi.hssf.record.Record;
import org.apache.poi.hssf.record.TabIdRecord;
import org.apache.poi.hssf.record.UnknownRecord;
import org.apache.poi.hssf.record.aggregates.FormulaRecordAggregate;
import org.apache.poi.hssf.record.aggregates.PageSettingsBlock;
import org.apache.poi.hssf.record.aggregates.RecordAggregate;
import org.apache.poi.hssf.record.common.UnicodeString;
import org.apache.poi.hssf.record.crypto.Biff8EncryptionKey;
import org.apache.poi.poifs.filesystem.NPOIFSFileSystem;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.apache.poi.ss.formula.ptg.Area3DPtg;
import org.apache.poi.ss.formula.ptg.DeletedArea3DPtg;
import org.apache.poi.ss.formula.ptg.Ptg;
import org.apache.poi.ss.usermodel.BaseTestBugzillaIssues;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.DataFormatter;
import org.apache.poi.ss.usermodel.FormulaEvaluator;
import org.apache.poi.ss.usermodel.Name;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.util.TempFile;
import org.junit.Ignore;
import org.junit.Test;

/**
 * Testcases for bugs entered in bugzilla
 * the Test name contains the bugzilla bug id
 *
 * <b>YK: If a bug can be tested in terms of common ss interfaces,
 *  define the test in the base class {@link BaseTestBugzillaIssues}</b>
 *
 * @author Avik Sengupta
 * @author Yegor Kozlov
 */
public final class TestBugs extends BaseTestBugzillaIssues {

    public TestBugs() {
        super(HSSFITestDataProvider.instance);
    }

    private static HSSFWorkbook openSample(String sampleFileName) {
        return HSSFITestDataProvider.instance.openSampleWorkbook(sampleFileName);
    }

    private static HSSFWorkbook writeOutAndReadBack(HSSFWorkbook original) {
        return HSSFITestDataProvider.instance.writeOutAndReadBack(original);
    }

    @SuppressWarnings("unused")
    private static void writeTestOutputFileForViewing(HSSFWorkbook wb, String simpleFileName) {
        if (true) { // set to false to output test files
            return;
        }
        System.setProperty("poi.keep.tmp.files", "true");
        File file;
        try {
            file = TempFile.createTempFile(simpleFileName + "#", ".xls");
            FileOutputStream out = new FileOutputStream(file);
            wb.write(out);
            out.close();
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
        if (!file.exists()) {
            throw new RuntimeException("File was not written");
        }
        System.out.println("Open file '" + file.getAbsolutePath() + "' in Excel");
    }

    /** Test reading AND writing a complicated workbook
     *Test opening resulting sheet in excel*/
    @Test
    public void bug15228() {
        HSSFWorkbook wb = openSample("15228.xls");
        HSSFSheet s = wb.getSheetAt(0);
        HSSFRow r = s.createRow(0);
        HSSFCell c = r.createCell(0);
        c.setCellValue(10);
        writeTestOutputFileForViewing(wb, "test15228");
    }

    @Test
    public void bug13796() {
        HSSFWorkbook wb = openSample("13796.xls");
        HSSFSheet s = wb.getSheetAt(0);
        HSSFRow r = s.createRow(0);
        HSSFCell c = r.createCell(0);
        c.setCellValue(10);
        writeOutAndReadBack(wb);
    }

    /** test reading of a formula with a name and a cell ref in one
     **/
    @Test
    public void bug14460() {
        HSSFWorkbook wb = openSample("14460.xls");
        wb.getSheetAt(0);
    }

    @Test
    public void bug14330() {
        HSSFWorkbook wb = openSample("14330-1.xls");
        wb.getSheetAt(0);

        wb = openSample("14330-2.xls");
        wb.getSheetAt(0);
    }

    private static void setCellText(HSSFCell cell, String text) {
        cell.setCellValue(new HSSFRichTextString(text));
    }

    /** test rewriting a file with large number of unique strings
     *open resulting file in Excel to check results!*/
    @Test
    public void bug15375() {
        HSSFWorkbook wb = openSample("15375.xls");
        HSSFSheet sheet = wb.getSheetAt(0);

        HSSFRow row = sheet.getRow(5);
        HSSFCell cell = row.getCell(3);
        if (cell == null)
            cell = row.createCell(3);

        // Write test
        cell.setCellType(HSSFCell.CELL_TYPE_STRING);
        setCellText(cell, "a test");

        // change existing numeric cell value

        HSSFRow oRow = sheet.getRow(14);
        HSSFCell oCell = oRow.getCell(4);
        oCell.setCellValue(75);
        oCell = oRow.getCell(5);
        setCellText(oCell, "0.3");

        writeTestOutputFileForViewing(wb, "test15375");
    }
    /**
     * test writing a file with large number of unique strings,
     * open resulting file in Excel to check results!
     */
    @Test
    public void bug15375_2() {
        bug15375(6000);
    }

    /**Double byte strings*/
    @Test
    public void bug15556() {
        HSSFWorkbook wb = openSample("15556.xls");
        HSSFSheet sheet = wb.getSheetAt(0);
        HSSFRow row = sheet.getRow(45);
        assertNotNull("Read row fine!" , row);
    }

    /**Double byte strings */
    @Test
    public void bug22742() {
        openSample("22742.xls");
    }

    /**Double byte strings */
    @Test
    public void bug12561_1() {
        openSample("12561-1.xls");
    }

    /** Double byte strings */
    @Test
    public void bug12561_2() {
        openSample("12561-2.xls");
    }

    /** Double byte strings
     File supplied by jubeson*/
    @Test
    public void bug12843_1() {
        openSample("12843-1.xls");
    }

    /** Double byte strings
     File supplied by Paul Chung*/
    @Test
    public void bug12843_2() {
        openSample("12843-2.xls");
    }

    /** Reference to Name*/
    @Test
    public void bug13224() {
        openSample("13224.xls");
    }

    /** Illegal argument exception - cannot store duplicate value in Map*/
    @Test
    public void bug19599() {
        openSample("19599-1.xls");
        openSample("19599-2.xls");
    }

    @Test
    public void bug24215() {
        HSSFWorkbook wb = openSample("24215.xls");

        for (int sheetIndex = 0; sheetIndex < wb.getNumberOfSheets();sheetIndex++) {
            HSSFSheet sheet = wb.getSheetAt(sheetIndex);
            int rows = sheet.getLastRowNum();

            for (int rowIndex = 0; rowIndex < rows; rowIndex++) {
                HSSFRow row = sheet.getRow(rowIndex);
                int cells = row.getLastCellNum();

                for (int cellIndex = 0; cellIndex < cells; cellIndex++) {
                    row.getCell(cellIndex);
                }
            }
        }
    }

    /**Tests read and write of Unicode strings in formula results
     * bug and testcase submitted by Sompop Kumnoonsate
     * The file contains THAI unicode characters.
     */
    @Test
    public void bugUnicodeStringFormulaRead() {

        HSSFWorkbook w = openSample("25695.xls");

        HSSFCell a1 = w.getSheetAt(0).getRow(0).getCell(0);
        HSSFCell a2 = w.getSheetAt(0).getRow(0).getCell(1);
        HSSFCell b1 = w.getSheetAt(0).getRow(1).getCell(0);
        HSSFCell b2 = w.getSheetAt(0).getRow(1).getCell(1);
        HSSFCell c1 = w.getSheetAt(0).getRow(2).getCell(0);
        HSSFCell c2 = w.getSheetAt(0).getRow(2).getCell(1);
        HSSFCell d1 = w.getSheetAt(0).getRow(3).getCell(0);
        HSSFCell d2 = w.getSheetAt(0).getRow(3).getCell(1);

        if (false) {
            // THAI code page
            System.out.println("a1="+unicodeString(a1));
            System.out.println("a2="+unicodeString(a2));
            // US code page
            System.out.println("b1="+unicodeString(b1));
            System.out.println("b2="+unicodeString(b2));
            // THAI+US
            System.out.println("c1="+unicodeString(c1));
            System.out.println("c2="+unicodeString(c2));
            // US+THAI
            System.out.println("d1="+unicodeString(d1));
            System.out.println("d2="+unicodeString(d2));
        }
        confirmSameCellText(a1, a2);
        confirmSameCellText(b1, b2);
        confirmSameCellText(c1, c2);
        confirmSameCellText(d1, d2);

        HSSFWorkbook rw = writeOutAndReadBack(w);

        HSSFCell ra1 = rw.getSheetAt(0).getRow(0).getCell(0);
        HSSFCell ra2 = rw.getSheetAt(0).getRow(0).getCell(1);
        HSSFCell rb1 = rw.getSheetAt(0).getRow(1).getCell(0);
        HSSFCell rb2 = rw.getSheetAt(0).getRow(1).getCell(1);
        HSSFCell rc1 = rw.getSheetAt(0).getRow(2).getCell(0);
        HSSFCell rc2 = rw.getSheetAt(0).getRow(2).getCell(1);
        HSSFCell rd1 = rw.getSheetAt(0).getRow(3).getCell(0);
        HSSFCell rd2 = rw.getSheetAt(0).getRow(3).getCell(1);

        confirmSameCellText(a1, ra1);
        confirmSameCellText(b1, rb1);
        confirmSameCellText(c1, rc1);
        confirmSameCellText(d1, rd1);

        confirmSameCellText(a1, ra2);
        confirmSameCellText(b1, rb2);
        confirmSameCellText(c1, rc2);
        confirmSameCellText(d1, rd2);
    }

    private static void confirmSameCellText(HSSFCell a, HSSFCell b) {
        assertEquals(a.getRichStringCellValue().getString(), b.getRichStringCellValue().getString());
    }

    private static String unicodeString(HSSFCell cell) {
        String ss = cell.getRichStringCellValue().getString();
        char s[] = ss.toCharArray();
        StringBuffer sb = new StringBuffer();
        for (int x=0;x<s.length;x++) {
            sb.append("\\u").append(Integer.toHexString(s[x]));
        }
        return sb.toString();
    }

    /** Error in opening wb*/
    @Test
    public void bug32822() {
        openSample("32822.xls");
    }

    /**fail to read wb with chart */
    @Test
    public void bug15573() {
        openSample("15573.xls");
    }

    /**names and macros */
    @Test
    public void bug27852() {
        HSSFWorkbook wb = openSample("27852.xls");

        for(int i = 0 ; i < wb.getNumberOfNames(); i++){
          HSSFName name = wb.getNameAt(i);
          name.getNameName();
          if (name.isFunctionName()) {
              continue;
          }
          name.getRefersToFormula();
        }
    }

    @Test
    public void bug33082() {
        openSample("33082.xls");
    }

    @Test
    public void bug34775() {
        try {
            openSample("34775.xls");
        } catch (NullPointerException e) {
            fail("identified bug 34775");
        }
    }

    /** Error when reading then writing ArrayValues in NameRecord's*/
    @Test
    public void bug37630() {
        HSSFWorkbook wb = openSample("37630.xls");
        writeOutAndReadBack(wb);
    }

    /**
     * Bug 25183: org.apache.poi.hssf.usermodel.HSSFSheet.setPropertiesFromSheet
     */
    @Test
    public void bug25183() {
        HSSFWorkbook wb = openSample("25183.xls");
        writeOutAndReadBack(wb);
    }

    /**
     * Bug 26100: 128-character message in IF statement cell causes HSSFWorkbook open failure
     */
    @Test
    public void bug26100() {
        HSSFWorkbook wb = openSample("26100.xls");
        writeOutAndReadBack(wb);
    }

    /**
     * Bug 27933: Unable to use a template (xls) file containing a wmf graphic
     */
    @Test
    public void bug27933() {
        HSSFWorkbook wb = openSample("27933.xls");
        writeOutAndReadBack(wb);
    }

    /**
     * Bug 29206:      NPE on HSSFSheet.getRow for blank rows
     */
    @Test
    public void bug29206() {
        //the first check with blank workbook
        HSSFWorkbook wb = openSample("Simple.xls");
        HSSFSheet sheet = wb.createSheet();
        for(int i = 1; i < 400; i++) {
            HSSFRow row = sheet.getRow(i);
            if(row != null) {
                row.getCell(0);
            }
        }
    }

    /**
     * Bug 29675: POI 2.5 final corrupts output when starting workbook has a graphic
     */
    @Test
    public void bug29675() {
        HSSFWorkbook wb = openSample("29675.xls");
        writeOutAndReadBack(wb);
    }

    /**
     * Bug 29942: Importing Excel files that have been created by Open Office on Linux
     */
    @Test
    public void bug29942() {
        HSSFWorkbook wb = openSample("29942.xls");

        HSSFSheet sheet = wb.getSheetAt(0);
        int count = 0;
        for (int i = sheet.getFirstRowNum(); i <= sheet.getLastRowNum(); i++) {
            HSSFRow row =  sheet.getRow(i);
            if (row != null) {
                HSSFCell cell = row .getCell(0);
                assertEquals(HSSFCell.CELL_TYPE_STRING, cell.getCellType());
                count++;
            }
        }
        assertEquals(85, count); //should read 85 rows

        writeOutAndReadBack(wb);
    }

    /**
     * Bug 29982: Unable to read spreadsheet when dropdown list cell is selected -
     *  Unable to construct record instance
     */
    @Test
    public void bug29982() {
        HSSFWorkbook wb = openSample("29982.xls");
        writeOutAndReadBack(wb);
    }

    /**
     * Bug 30540: HSSFSheet.setRowBreak throws NullPointerException
     */
    @Test
    public void bug30540() {
        HSSFWorkbook wb = openSample("30540.xls");

        HSSFSheet s = wb.getSheetAt(0);
        s.setRowBreak(1);
        writeOutAndReadBack(wb);
    }

    /**
     * Bug 31749: {Need help urgently}[This is critical] workbook.write() corrupts the file......?
     */
    @Test
    public void bug31749() {
        HSSFWorkbook wb = openSample("31749.xls");
        writeOutAndReadBack(wb);
    }

    /**
     * Bug 31979: {urgent help needed .....}poi library does not support form objects properly.
     */
    @Test
    public void bug31979() {
        HSSFWorkbook wb = openSample("31979.xls");
        writeOutAndReadBack(wb);
    }

    /**
     * Bug 35564: HSSFCell.java: NullPtrExc in isGridsPrinted() and getProtect()
     *  when HSSFWorkbook is created from file
     */
    @Test
    public void bug35564() {
        HSSFWorkbook wb = openSample("35564.xls");

        HSSFSheet sheet = wb.getSheetAt( 0 );
        assertEquals(false, sheet.isGridsPrinted());
        assertEquals(false, sheet.getProtect());

        writeOutAndReadBack(wb);
    }

    /**
     * Bug 35565: HSSFCell.java: NullPtrExc in getColumnBreaks() when HSSFWorkbook is created from file
     */
    @Test
    public void bug35565() {
        HSSFWorkbook wb = openSample("35565.xls");

        HSSFSheet sheet = wb.getSheetAt( 0 );
        assertNotNull(sheet);
        writeOutAndReadBack(wb);
    }

    /**
     * Bug 37376: Cannot open the saved Excel file if checkbox controls exceed certain limit
     */
    @Test
    public void bug37376() {
        HSSFWorkbook wb = openSample("37376.xls");
        writeOutAndReadBack(wb);
    }

    /**
     * Bug 40285:      CellIterator Skips First Column
     */
    @Test
    public void bug40285() {
        HSSFWorkbook wb = openSample("40285.xls");

        HSSFSheet sheet = wb.getSheetAt( 0 );
        int rownum = 0;
        for (Iterator<Row> it = sheet.rowIterator(); it.hasNext(); rownum++) {
            Row row = it.next();
            assertEquals(rownum, row.getRowNum());
            int cellNum = 0;
            for (Iterator<Cell> it2 = row.cellIterator(); it2.hasNext(); cellNum++) {
                Cell cell = it2.next();
                assertEquals(cellNum, cell.getColumnIndex());
            }
        }
    }

    /**
     * Test bug 38266: NPE when adding a row break
     *
     * User's diagnosis:
     * 1. Manually (i.e., not using POI) create an Excel Workbook, making sure it
     * contains a sheet that doesn't have any row breaks
     * 2. Using POI, create a new HSSFWorkbook from the template in step #1
     * 3. Try adding a row break (via sheet.setRowBreak()) to the sheet mentioned in step #1
     * 4. Get a NullPointerException
     */
    @Test
    public void bug38266() {
        String[] files = {"Simple.xls", "SimpleMultiCell.xls", "duprich1.xls"};
        for (int i = 0; i < files.length; i++) {
            HSSFWorkbook wb = openSample(files[i]);

            HSSFSheet sheet = wb.getSheetAt( 0 );
            int[] breaks = sheet.getRowBreaks();
            assertEquals(0, breaks.length);

            //add 3 row breaks
            for (int j = 1; j <= 3; j++) {
                sheet.setRowBreak(j*20);
            }
        }
    }

    @Test
    public void bug40738() {
        HSSFWorkbook wb = openSample("SimpleWithAutofilter.xls");
        writeOutAndReadBack(wb);
    }

    /**
     * Bug 44200: Sheet not cloneable when Note added to excel cell
     */
    @Test
    public void bug44200() {
        HSSFWorkbook wb = openSample("44200.xls");

        wb.cloneSheet(0);
        writeOutAndReadBack(wb);
    }

    /**
     * Bug 44201: Sheet not cloneable when validation added to excel cell
     */
    @Test
    public void bug44201() {
        HSSFWorkbook wb = openSample("44201.xls");
        writeOutAndReadBack(wb);
    }

    /**
     * Bug 37684  : Unhandled Continue Record Error
     */
    @Test
    public void bug37684 () {
        HSSFWorkbook wb = openSample("37684-1.xls");
        writeOutAndReadBack(wb);

        wb = openSample("37684-2.xls");
        writeOutAndReadBack(wb);
    }

    /**
     * Bug 41139: Constructing HSSFWorkbook is failed,threw threw ArrayIndexOutOfBoundsException for creating UnknownRecord
     */
    @Test
    public void bug41139() {
        HSSFWorkbook wb = openSample("41139.xls");
        writeOutAndReadBack(wb);
    }

    /**
     * Bug 41546: Constructing HSSFWorkbook is failed,
     *  Unknown Ptg in Formula: 0x1a (26)
     */
    @Test
    public void bug41546() {
        HSSFWorkbook wb = openSample("41546.xls");
        assertEquals(1, wb.getNumberOfSheets());
        wb = writeOutAndReadBack(wb);
        assertEquals(1, wb.getNumberOfSheets());
    }

    /**
     * Bug 42564: Some files from Access were giving a RecordFormatException
     *  when reading the BOFRecord
     */
    @Test
    public void bug42564() {
        HSSFWorkbook wb = openSample("ex42564-21435.xls");
        writeOutAndReadBack(wb);
    }

    /**
     * Bug 42564: Some files from Access also have issues
     *  with the NameRecord, once you get past the BOFRecord
     *  issue.
     */
    @Test
    public void bug42564Alt() {
        HSSFWorkbook wb = openSample("ex42564-21503.xls");
        writeOutAndReadBack(wb);
    }

    /**
     * Bug 42618: RecordFormatException reading a file containing
     *     =CHOOSE(2,A2,A3,A4)
     */
    @Test
    public void bug42618() {
        HSSFWorkbook wb = openSample("SimpleWithChoose.xls");
        wb = writeOutAndReadBack(wb);
        // Check we detect the string properly too
        HSSFSheet s = wb.getSheetAt(0);

        // Textual value
        HSSFRow r1 = s.getRow(0);
        HSSFCell c1 = r1.getCell(1);
        assertEquals("=CHOOSE(2,A2,A3,A4)", c1.getRichStringCellValue().toString());

        // Formula Value
        HSSFRow r2 = s.getRow(1);
        HSSFCell c2 = r2.getCell(1);
        assertEquals(25, (int)c2.getNumericCellValue());

        try {
            assertEquals("CHOOSE(2,A2,A3,A4)", c2.getCellFormula());
        } catch (IllegalStateException e) {
            if (e.getMessage().startsWith("Too few arguments")
                && e.getMessage().indexOf("ConcatPtg") > 0) {
                fail("identified bug 44306");
            }
        }
    }

    /**
     * Something up with the FileSharingRecord
     */
    @Test
    public void bug43251() {

        // Used to blow up with an IllegalArgumentException
        //  when creating a FileSharingRecord
        try {
            HSSFWorkbook wb = openSample("43251.xls");
            assertEquals(1, wb.getNumberOfSheets());
        } catch (IllegalArgumentException e) {
            fail("identified bug 43251");
        }
    }

    /**
     * Crystal reports generates files with short
     *  StyleRecords, which is against the spec
     */
    @Test
    public void bug44471() {

        // Used to blow up with an ArrayIndexOutOfBounds
        //  when creating a StyleRecord
        HSSFWorkbook wb;
        //try {
        wb = openSample("OddStyleRecord.xls");
        //} catch (ArrayIndexOutOfBoundsException e) {
        //    throw new AssertionFailedError("Identified bug 44471");
        //}

        assertEquals(1, wb.getNumberOfSheets());
    }

    /**
     * Files with "read only recommended" were giving
     *  grief on the FileSharingRecord
     */
    @Test
    public void bug44536() {

        // Used to blow up with an IllegalArgumentException
        //  when creating a FileSharingRecord
        HSSFWorkbook wb = openSample("ReadOnlyRecommended.xls");

        // Check read only advised
        assertEquals(3, wb.getNumberOfSheets());
        assertTrue(wb.isWriteProtected());

        // But also check that another wb isn't
        wb = openSample("SimpleWithChoose.xls");
        assertFalse(wb.isWriteProtected());
    }

    /**
     * Some files were having problems with the DVRecord,
     *  probably due to dropdowns
     */
    @Test
    public void bug44593() {

        // Used to blow up with an IllegalArgumentException
        //  when creating a DVRecord
        // Now won't, but no idea if this means we have
        //  rubbish in the DVRecord or not...
        HSSFWorkbook wb;
        //try {
        wb = openSample("44593.xls");
        //} catch (IllegalArgumentException e) {
        //    throw new AssertionFailedError("Identified bug 44593");
        //}

        assertEquals(2, wb.getNumberOfSheets());
    }

    /**
     * Used to give problems due to trying to read a zero
     *  length string, but that's now properly handled
     */
    @Test
    public void bug44643() {

        // Used to blow up with an IllegalArgumentException
        HSSFWorkbook wb;
        //try {
        wb = openSample("44643.xls");
        //} catch (IllegalArgumentException e) {
        //    throw new AssertionFailedError("identified bug 44643");
        //}

        assertEquals(1, wb.getNumberOfSheets());
    }

    /**
     * User reported the wrong number of rows from the
     *  iterator, but we can't replicate that
     */
    @Test
    public void bug44693() {

        HSSFWorkbook wb = openSample("44693.xls");
        HSSFSheet s = wb.getSheetAt(0);

        // Rows are 1 to 713
        assertEquals(0, s.getFirstRowNum());
        assertEquals(712, s.getLastRowNum());
        assertEquals(713, s.getPhysicalNumberOfRows());

        // Now check the iterator
        int rowsSeen = 0;
        for(Iterator<Row> i = s.rowIterator(); i.hasNext(); ) {
            Row r = i.next();
            assertNotNull(r);
            rowsSeen++;
        }
        assertEquals(713, rowsSeen);
    }

    /**
     * Bug 28774: Excel will crash when opening xls-files with images.
     */
    @Test
    public void bug28774() {
        HSSFWorkbook wb = openSample("28774.xls");
        assertTrue("no errors reading sample xls", true);
        writeOutAndReadBack(wb);
        assertTrue("no errors writing sample xls", true);
    }

    /**
     * Had a problem apparently, not sure what as it
     *  works just fine...
     */
    @Test
    public void bug44891() {
        HSSFWorkbook wb = openSample("44891.xls");
        assertTrue("no errors reading sample xls", true);
        writeOutAndReadBack(wb);
        assertTrue("no errors writing sample xls", true);
    }

    /**
     * Bug 44235: Ms Excel can't open save as excel file
     *
     * Works fine with poi-3.1-beta1.
     */
    @Test
    public void bug44235() {
        HSSFWorkbook wb = openSample("44235.xls");
        assertTrue("no errors reading sample xls", true);
        writeOutAndReadBack(wb);
        assertTrue("no errors writing sample xls", true);
    }

    @Test
    public void bug36947() {
        HSSFWorkbook wb = openSample("36947.xls");
        assertTrue("no errors reading sample xls", true);
        writeOutAndReadBack(wb);
        assertTrue("no errors writing sample xls", true);
    }

    @Test
    public void bug39634() {
        HSSFWorkbook wb = openSample("39634.xls");
        assertTrue("no errors reading sample xls", true);
        writeOutAndReadBack(wb);
        assertTrue("no errors writing sample xls", true);
    }

    /**
     * Problems with extracting check boxes from
     *  HSSFObjectData
     * @throws Exception
     */
    @Test
    public void bug44840() {
        HSSFWorkbook wb = openSample("WithCheckBoxes.xls");

        // Take a look at the embedded objects
        List<HSSFObjectData> objects = wb.getAllEmbeddedObjects();
        assertEquals(1, objects.size());

        HSSFObjectData obj = (HSSFObjectData)objects.get(0);
        assertNotNull(obj);

        // Peek inside the underlying record
        EmbeddedObjectRefSubRecord rec = obj.findObjectRecord();
        assertNotNull(rec);

//        assertEquals(32, rec.field_1_stream_id_offset);
        assertEquals(0, rec.getStreamId().intValue()); // WRONG!
        assertEquals("Forms.CheckBox.1", rec.getOLEClassName());
        assertEquals(12, rec.getObjectData().length);

        // Doesn't have a directory
        assertFalse(obj.hasDirectoryEntry());
        assertNotNull(obj.getObjectData());
        assertEquals(12, obj.getObjectData().length);
        assertEquals("Forms.CheckBox.1", obj.getOLE2ClassName());

        try {
            obj.getDirectory();
            fail();
        } catch(FileNotFoundException e) {
            // expected during successful test
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * Test that we can delete sheets without
     *  breaking the build in named ranges
     *  used for printing stuff.
     */
    @Test
    public void bug30978() {
        HSSFWorkbook wb = openSample("30978-alt.xls");
        assertEquals(1, wb.getNumberOfNames());
        assertEquals(3, wb.getNumberOfSheets());

        // Check all names fit within range, and use
        //  DeletedArea3DPtg
        InternalWorkbook w = wb.getWorkbook();
        for(int i=0; i<w.getNumNames(); i++) {
            NameRecord r = w.getNameRecord(i);
            assertTrue(r.getSheetNumber() <= wb.getNumberOfSheets());

            Ptg[] nd = r.getNameDefinition();
            assertEquals(1, nd.length);
            assertTrue(nd[0] instanceof DeletedArea3DPtg);
        }


        // Delete the 2nd sheet
        wb.removeSheetAt(1);


        // Re-check
        assertEquals(1, wb.getNumberOfNames());
        assertEquals(2, wb.getNumberOfSheets());

        for(int i=0; i<w.getNumNames(); i++) {
            NameRecord r = w.getNameRecord(i);
            assertTrue(r.getSheetNumber() <= wb.getNumberOfSheets());

            Ptg[] nd = r.getNameDefinition();
            assertEquals(1, nd.length);
            assertTrue(nd[0] instanceof DeletedArea3DPtg);
        }


        // Save and re-load
        wb = writeOutAndReadBack(wb);
        w = wb.getWorkbook();

        assertEquals(1, wb.getNumberOfNames());
        assertEquals(2, wb.getNumberOfSheets());

        for(int i=0; i<w.getNumNames(); i++) {
            NameRecord r = w.getNameRecord(i);
            assertTrue(r.getSheetNumber() <= wb.getNumberOfSheets());

            Ptg[] nd = r.getNameDefinition();
            assertEquals(1, nd.length);
            assertTrue(nd[0] instanceof DeletedArea3DPtg);
        }
    }

    /**
     * Test that fonts get added properly
     */
    @Test
    public void bug45338() {
        HSSFWorkbook wb = new HSSFWorkbook();
        assertEquals(4, wb.getNumberOfFonts());

        HSSFSheet s = wb.createSheet();
        s.createRow(0);
        s.createRow(1);
        s.getRow(0).createCell(0);
        s.getRow(1).createCell(0);

        assertEquals(4, wb.getNumberOfFonts());

        HSSFFont f1 = wb.getFontAt((short)0);
        assertEquals(400, f1.getBoldweight());

        // Check that asking for the same font
        //  multiple times gives you the same thing.
        // Otherwise, our tests wouldn't work!
        assertEquals(
                wb.getFontAt((short)0),
                wb.getFontAt((short)0)
        );
        assertEquals(
                wb.getFontAt((short)2),
                wb.getFontAt((short)2)
        );
        assertTrue(
                wb.getFontAt((short)0)
                !=
                wb.getFontAt((short)2)
        );

        // Look for a new font we have
        //  yet to add
        assertNull(
            wb.findFont(
                (short)11, (short)123, (short)22,
                "Thingy", false, true, (short)2, (byte)2
            )
        );

        HSSFFont nf = wb.createFont();
        assertEquals(5, wb.getNumberOfFonts());

        assertEquals(5, nf.getIndex());
        assertEquals(nf, wb.getFontAt((short)5));

        nf.setBoldweight((short)11);
        nf.setColor((short)123);
        nf.setFontHeight((short)22);
        nf.setFontName("Thingy");
        nf.setItalic(false);
        nf.setStrikeout(true);
        nf.setTypeOffset((short)2);
        nf.setUnderline((byte)2);

        assertEquals(5, wb.getNumberOfFonts());
        assertEquals(nf, wb.getFontAt((short)5));

        // Find it now
        assertNotNull(
            wb.findFont(
                (short)11, (short)123, (short)22,
                "Thingy", false, true, (short)2, (byte)2
            )
        );
        assertEquals(
            5,
            wb.findFont(
                   (short)11, (short)123, (short)22,
                   "Thingy", false, true, (short)2, (byte)2
               ).getIndex()
        );
        assertEquals(nf,
               wb.findFont(
                   (short)11, (short)123, (short)22,
                   "Thingy", false, true, (short)2, (byte)2
               )
        );
    }

    /**
     * From the mailing list - ensure we can handle a formula
     *  containing a zip code, eg ="70164"
     */
    @Test
    public void bugZipCodeFormulas() {
        HSSFWorkbook wb = new HSSFWorkbook();
        HSSFSheet s = wb.createSheet();
        s.createRow(0);
        HSSFCell c1 = s.getRow(0).createCell(0);
        HSSFCell c2 = s.getRow(0).createCell(1);
        HSSFCell c3 = s.getRow(0).createCell(2);

        // As number and string
        c1.setCellFormula("70164");
        c2.setCellFormula("\"70164\"");
        c3.setCellFormula("\"90210\"");

        // Check the formulas
        assertEquals("70164", c1.getCellFormula());
        assertEquals("\"70164\"", c2.getCellFormula());

        // And check the values - blank
        confirmCachedValue(0.0, c1);
        confirmCachedValue(0.0, c2);
        confirmCachedValue(0.0, c3);

        // Try changing the cached value on one of the string
        //  formula cells, so we can see it updates properly
        c3.setCellValue(new HSSFRichTextString("test"));
        confirmCachedValue("test", c3);
        try {
            c3.getNumericCellValue();
            fail("exception should have been thrown");
        } catch (IllegalStateException e) {
            assertEquals("Cannot get a numeric value from a text formula cell", e.getMessage());
        }


        // Now evaluate, they should all be changed
        HSSFFormulaEvaluator eval = new HSSFFormulaEvaluator(wb);
        eval.evaluateFormulaCell(c1);
        eval.evaluateFormulaCell(c2);
        eval.evaluateFormulaCell(c3);

        // Check that the cells now contain
        //  the correct values
        confirmCachedValue(70164.0, c1);
        confirmCachedValue("70164", c2);
        confirmCachedValue("90210", c3);


        // Write and read
        HSSFWorkbook nwb = writeOutAndReadBack(wb);
        HSSFSheet ns = nwb.getSheetAt(0);
        HSSFCell nc1 = ns.getRow(0).getCell(0);
        HSSFCell nc2 = ns.getRow(0).getCell(1);
        HSSFCell nc3 = ns.getRow(0).getCell(2);

        // Re-check
        confirmCachedValue(70164.0, nc1);
        confirmCachedValue("70164", nc2);
        confirmCachedValue("90210", nc3);

        @SuppressWarnings("deprecation")
        CellValueRecordInterface[] cvrs = ns.getSheet().getValueRecords();
        for (int i = 0; i < cvrs.length; i++) {
            CellValueRecordInterface cvr = cvrs[i];
            if(cvr instanceof FormulaRecordAggregate) {
                FormulaRecordAggregate fr = (FormulaRecordAggregate)cvr;

                if(i == 0) {
                    assertEquals(70164.0, fr.getFormulaRecord().getValue(), 0.0001);
                    assertNull(fr.getStringRecord());
                } else if (i == 1) {
                    assertEquals(0.0, fr.getFormulaRecord().getValue(), 0.0001);
                    assertNotNull(fr.getStringRecord());
                    assertEquals("70164", fr.getStringRecord().getString());
                } else {
                    assertEquals(0.0, fr.getFormulaRecord().getValue(), 0.0001);
                    assertNotNull(fr.getStringRecord());
                    assertEquals("90210", fr.getStringRecord().getString());
                }
            }
        }
        assertEquals(3, cvrs.length);
    }

    private static void confirmCachedValue(double expectedValue, HSSFCell cell) {
        assertEquals(HSSFCell.CELL_TYPE_FORMULA, cell.getCellType());
        assertEquals(HSSFCell.CELL_TYPE_NUMERIC, cell.getCachedFormulaResultType());
        assertEquals(expectedValue, cell.getNumericCellValue(), 0.0);
    }
    private static void confirmCachedValue(String expectedValue, HSSFCell cell) {
        assertEquals(HSSFCell.CELL_TYPE_FORMULA, cell.getCellType());
        assertEquals(HSSFCell.CELL_TYPE_STRING, cell.getCachedFormulaResultType());
        assertEquals(expectedValue, cell.getRichStringCellValue().getString());
    }

    /**
     * Problem with "Vector Rows", eg a whole
     *  column which is set to the result of
     *  {=sin(B1:B9)}(9,1), so that each cell is
     *  shown to have the contents
     *  {=sin(B1:B9){9,1)[rownum][0]
     * In this sample file, the vector column
     *  is C, and the data column is B.
     *
     * For now, blows up with an exception from ExtPtg
     *  Expected ExpPtg to be converted from Shared to Non-Shared...
     */
    @Ignore
    public void test43623() {
        HSSFWorkbook wb = openSample("43623.xls");
        assertEquals(1, wb.getNumberOfSheets());

        HSSFSheet s1 = wb.getSheetAt(0);

        HSSFCell c1 = s1.getRow(0).getCell(2);
        HSSFCell c2 = s1.getRow(1).getCell(2);
        HSSFCell c3 = s1.getRow(2).getCell(2);

        // These formula contents are a guess...
        assertEquals("{=sin(B1:B9){9,1)[0][0]", c1.getCellFormula());
        assertEquals("{=sin(B1:B9){9,1)[1][0]", c2.getCellFormula());
        assertEquals("{=sin(B1:B9){9,1)[2][0]", c3.getCellFormula());

        // Save and re-open, ensure it still works
        HSSFWorkbook nwb = writeOutAndReadBack(wb);
        HSSFSheet ns1 = nwb.getSheetAt(0);
        HSSFCell nc1 = ns1.getRow(0).getCell(2);
        HSSFCell nc2 = ns1.getRow(1).getCell(2);
        HSSFCell nc3 = ns1.getRow(2).getCell(2);

        assertEquals("{=sin(B1:B9){9,1)[0][0]", nc1.getCellFormula());
        assertEquals("{=sin(B1:B9){9,1)[1][0]", nc2.getCellFormula());
        assertEquals("{=sin(B1:B9){9,1)[2][0]", nc3.getCellFormula());
    }

    /**
     * People are all getting confused about the last
     *  row and cell number
     */
    @Test
    public void bug30635() {
        HSSFWorkbook wb = new HSSFWorkbook();
        HSSFSheet s = wb.createSheet();

        // No rows, everything is 0
        assertEquals(0, s.getFirstRowNum());
        assertEquals(0, s.getLastRowNum());
        assertEquals(0, s.getPhysicalNumberOfRows());

        // One row, most things are 0, physical is 1
        s.createRow(0);
        assertEquals(0, s.getFirstRowNum());
        assertEquals(0, s.getLastRowNum());
        assertEquals(1, s.getPhysicalNumberOfRows());

        // And another, things change
        s.createRow(4);
        assertEquals(0, s.getFirstRowNum());
        assertEquals(4, s.getLastRowNum());
        assertEquals(2, s.getPhysicalNumberOfRows());


        // Now start on cells
        HSSFRow r = s.getRow(0);
        assertEquals(-1, r.getFirstCellNum());
        assertEquals(-1, r.getLastCellNum());
        assertEquals(0, r.getPhysicalNumberOfCells());

        // Add a cell, things move off -1
        r.createCell(0);
        assertEquals(0, r.getFirstCellNum());
        assertEquals(1, r.getLastCellNum()); // last cell # + 1
        assertEquals(1, r.getPhysicalNumberOfCells());

        r.createCell(1);
        assertEquals(0, r.getFirstCellNum());
        assertEquals(2, r.getLastCellNum()); // last cell # + 1
        assertEquals(2, r.getPhysicalNumberOfCells());

        r.createCell(4);
        assertEquals(0, r.getFirstCellNum());
        assertEquals(5, r.getLastCellNum()); // last cell # + 1
        assertEquals(3, r.getPhysicalNumberOfCells());
    }

    /**
     * Data Tables - ptg 0x2
     */
    @Test
    public void bug44958() {
        HSSFWorkbook wb = openSample("44958.xls");
        HSSFSheet s;
        HSSFRow r;
        HSSFCell c;

        // Check the contents of the formulas

        // E4 to G9 of sheet 4 make up the table
        s = wb.getSheet("OneVariable Table Completed");
        r = s.getRow(3);
        c = r.getCell(4);
        assertEquals(HSSFCell.CELL_TYPE_FORMULA, c.getCellType());

        // TODO - check the formula once tables and
        //  arrays are properly supported


        // E4 to H9 of sheet 5 make up the table
        s = wb.getSheet("TwoVariable Table Example");
        r = s.getRow(3);
        c = r.getCell(4);
        assertEquals(HSSFCell.CELL_TYPE_FORMULA, c.getCellType());

        // TODO - check the formula once tables and
        //  arrays are properly supported
    }

    /**
     * 45322: HSSFSheet.autoSizeColumn fails when style.getDataFormat() returns -1
     */
    @Test
    public void bug45322() {
        HSSFWorkbook wb = openSample("44958.xls");
        HSSFSheet sh = wb.getSheetAt(0);
        for(short i=0; i < 30; i++) sh.autoSizeColumn(i);
     }

    /**
     * We used to add too many UncalcRecords to sheets
     *  with diagrams on. Don't any more
     */
    @Test
    public void bug45414() {
        HSSFWorkbook wb = openSample("WithThreeCharts.xls");
        wb.getSheetAt(0).setForceFormulaRecalculation(true);
        wb.getSheetAt(1).setForceFormulaRecalculation(false);
        wb.getSheetAt(2).setForceFormulaRecalculation(true);

        // Write out and back in again
        // This used to break
        HSSFWorkbook nwb = writeOutAndReadBack(wb);

        // Check now set as it should be
        assertTrue(nwb.getSheetAt(0).getForceFormulaRecalculation());
        assertFalse(nwb.getSheetAt(1).getForceFormulaRecalculation());
        assertTrue(nwb.getSheetAt(2).getForceFormulaRecalculation());
    }

    /**
     * Very hidden sheets not displaying as such
     */
    @Test
    public void bug45761() {
        HSSFWorkbook wb = openSample("45761.xls");
        assertEquals(3, wb.getNumberOfSheets());

        assertFalse(wb.isSheetHidden(0));
        assertFalse(wb.isSheetVeryHidden(0));
        assertTrue(wb.isSheetHidden(1));
        assertFalse(wb.isSheetVeryHidden(1));
        assertFalse(wb.isSheetHidden(2));
        assertTrue(wb.isSheetVeryHidden(2));

        // Change 0 to be very hidden, and re-load
        wb.setSheetHidden(0, HSSFWorkbook.SHEET_STATE_VERY_HIDDEN);

        HSSFWorkbook nwb = writeOutAndReadBack(wb);

        assertFalse(nwb.isSheetHidden(0));
        assertTrue(nwb.isSheetVeryHidden(0));
        assertTrue(nwb.isSheetHidden(1));
        assertFalse(nwb.isSheetVeryHidden(1));
        assertFalse(nwb.isSheetHidden(2));
        assertTrue(nwb.isSheetVeryHidden(2));
    }

    /**
     * The resolution for bug 45777 assumed that the maximum text length in a header / footer
     * record was 256 bytes.  This assumption appears to be wrong.  Since the fix for bug 47244,
     * POI now supports header / footer text lengths beyond 256 bytes.
     */
    @Test
    public void bug45777() {
        HSSFWorkbook wb = new HSSFWorkbook();
        HSSFSheet s = wb.createSheet();

        char[] cc248 = new char[248];
        Arrays.fill(cc248, 'x');
        String s248 = new String(cc248);

        String s249 = s248 + "1";
        String s250 = s248 + "12";
        String s251 = s248 + "123";
        assertEquals(248, s248.length());
        assertEquals(249, s249.length());
        assertEquals(250, s250.length());
        assertEquals(251, s251.length());


        // Try on headers
        s.getHeader().setCenter(s248);
        assertEquals(254, s.getHeader().getRawText().length());
        writeOutAndReadBack(wb);

        s.getHeader().setCenter(s251);
        assertEquals(257, s.getHeader().getRawText().length());
        writeOutAndReadBack(wb);

        try {
            s.getHeader().setCenter(s250); // 256 bytes required
            s.getHeader().setCenter(s251); // 257 bytes required
        } catch(IllegalArgumentException e) {
            fail("Identified bug 47244b - header can be more than 256 bytes");
        }

        // Now try on footers
        s.getFooter().setCenter(s248);
        assertEquals(254, s.getFooter().getRawText().length());
        writeOutAndReadBack(wb);

        s.getFooter().setCenter(s251);
        assertEquals(257, s.getFooter().getRawText().length());
        writeOutAndReadBack(wb);

        try {
            s.getFooter().setCenter(s250); // 256 bytes required
            s.getFooter().setCenter(s251); // 257 bytes required
        } catch(IllegalArgumentException e) {
            fail("Identified bug 47244b - footer can be more than 256 bytes");
        }
    }

    /**
     * Charts with long titles
     */
    @Test
    public void bug45784() {
        // This used to break
        HSSFWorkbook wb = openSample("45784.xls");
        assertEquals(1, wb.getNumberOfSheets());
        wb = HSSFTestDataSamples.writeOutAndReadBack(wb);
    }

   /**
     * Cell background colours
     */
    @Test
    public void bug45492() {
        HSSFWorkbook wb = openSample("45492.xls");
        HSSFSheet s = wb.getSheetAt(0);
        HSSFRow r = s.getRow(0);
        HSSFPalette p = wb.getCustomPalette();

        HSSFCell auto = r.getCell(0);
        HSSFCell grey = r.getCell(1);
        HSSFCell red = r.getCell(2);
        HSSFCell blue = r.getCell(3);
        HSSFCell green = r.getCell(4);

        assertEquals(64, auto.getCellStyle().getFillForegroundColor());
        assertEquals(64, auto.getCellStyle().getFillBackgroundColor());
        assertEquals("0:0:0", p.getColor(64).getHexString());

        assertEquals(22, grey.getCellStyle().getFillForegroundColor());
        assertEquals(64, grey.getCellStyle().getFillBackgroundColor());
        assertEquals("C0C0:C0C0:C0C0", p.getColor(22).getHexString());

        assertEquals(10, red.getCellStyle().getFillForegroundColor());
        assertEquals(64, red.getCellStyle().getFillBackgroundColor());
        assertEquals("FFFF:0:0", p.getColor(10).getHexString());

        assertEquals(12, blue.getCellStyle().getFillForegroundColor());
        assertEquals(64, blue.getCellStyle().getFillBackgroundColor());
        assertEquals("0:0:FFFF", p.getColor(12).getHexString());

        assertEquals(11, green.getCellStyle().getFillForegroundColor());
        assertEquals(64, green.getCellStyle().getFillBackgroundColor());
        assertEquals("0:FFFF:0", p.getColor(11).getHexString());
    }

    /**
     * ContinueRecord after EOF
     */
    @Test
    public void bug46137() {
        // This used to break
        HSSFWorkbook wb = openSample("46137.xls");
        assertEquals(7, wb.getNumberOfSheets());
        wb = HSSFTestDataSamples.writeOutAndReadBack(wb);
    }

    /**
     * Odd POIFS blocks issue:
     * block[ 44 ] already removed from org.apache.poi.poifs.storage.BlockListImpl.remove
     */
    @Test
    public void bug45290() {
        HSSFWorkbook wb = openSample("45290.xls");
        assertEquals(1, wb.getNumberOfSheets());
    }

    /**
     * In POI-2.5 user reported exception when parsing a name with a custom VBA function:
     *  =MY_VBA_FUNCTION("lskdjflsk")
     */
    @Test
    public void bug30070() {
        HSSFWorkbook wb = openSample("30070.xls"); //contains custom VBA function 'Commission'
        HSSFSheet sh = wb.getSheetAt(0);
        HSSFCell cell = sh.getRow(0).getCell(1);

        //B1 uses VBA in the formula
        assertEquals("Commission(A1)", cell.getCellFormula());

        //name sales_1 refers to Commission(Sheet0!$A$1)
        int idx = wb.getNameIndex("sales_1");
        assertTrue(idx != -1);

        HSSFName name = wb.getNameAt(idx);
        assertEquals("Commission(Sheet0!$A$1)", name.getRefersToFormula());

    }

    /**
     * The link formulas which is referring to other books cannot be taken (the bug existed prior to POI-3.2)
     * Expected:
     *
     * [link_sub.xls]Sheet1!$A$1
     * [link_sub.xls]Sheet1!$A$2
     * [link_sub.xls]Sheet1!$A$3
     *
     * POI-3.1 output:
     *
     * Sheet1!$A$1
     * Sheet1!$A$2
     * Sheet1!$A$3
     *
     */
    @Test
    public void bug27364() {
        HSSFWorkbook wb = openSample("27364.xls");
        HSSFSheet sheet = wb.getSheetAt(0);

        assertEquals("[link_sub.xls]Sheet1!$A$1", sheet.getRow(0).getCell(0).getCellFormula());
        assertEquals("[link_sub.xls]Sheet1!$A$2", sheet.getRow(1).getCell(0).getCellFormula());
        assertEquals("[link_sub.xls]Sheet1!$A$3", sheet.getRow(2).getCell(0).getCellFormula());
    }

    /**
     * Similar to bug#27364:
     * HSSFCell.getCellFormula() fails with references to external workbooks
     */
    @Test
    public void bug31661() {
        HSSFWorkbook wb = openSample("31661.xls");
        HSSFSheet sheet = wb.getSheetAt(0);
        HSSFCell cell = sheet.getRow(11).getCell(10); //K11
        assertEquals("+'[GM Budget.xls]8085.4450'!$B$2", cell.getCellFormula());
    }

    /**
     * Incorrect handling of non-ISO 8859-1 characters in Windows ANSII Code Page 1252
     */
    @Test
    public void bug27394() {
        HSSFWorkbook wb = openSample("27394.xls");
        assertEquals("\u0161\u017E", wb.getSheetName(0));
        assertEquals("\u0161\u017E\u010D\u0148\u0159", wb.getSheetName(1));
        HSSFSheet sheet = wb.getSheetAt(0);

        assertEquals("\u0161\u017E", sheet.getRow(0).getCell(0).getStringCellValue());
        assertEquals("\u0161\u017E\u010D\u0148\u0159", sheet.getRow(1).getCell(0).getStringCellValue());
    }

    /**
     * Multiple calls of HSSFWorkbook.write result in corrupted xls
     */
    @Test
    public void bug32191() throws IOException {
        HSSFWorkbook wb = openSample("27394.xls");

        ByteArrayOutputStream out = new ByteArrayOutputStream();
        wb.write(out);
        out.close();
        int size1 = out.size();

        out = new ByteArrayOutputStream();
        wb.write(out);
        out.close();
        int size2 = out.size();

        assertEquals(size1, size2);
        out = new ByteArrayOutputStream();
        wb.write(out);
        out.close();
        int size3 = out.size();
        assertEquals(size2, size3);

    }

    /**
     * java.io.IOException: block[ 0 ] already removed
     * (is an excel 95 file though)
     */
    @Test
    public void bug46904() {
        try {
            openSample("46904.xls");
            fail();
        } catch(OldExcelFormatException e) {
            assertTrue(e.getMessage().startsWith(
                    "The supplied spreadsheet seems to be Excel"
            ));
        }
    }

    /**
     * java.lang.NegativeArraySizeException reading long
     *  non-unicode data for a name record
     */
    @Test
    public void bug47034() {
        HSSFWorkbook wb = openSample("47034.xls");
        assertEquals(893, wb.getNumberOfNames());
        assertEquals("Matthew\\Matthew11_1\\Matthew2331_1\\Matthew2351_1\\Matthew2361_1___lab", wb.getNameName(300));
    }

    /**
     * HSSFRichTextString.length() returns negative for really long strings.
     * The test file was created in OpenOffice 3.0 as Excel does not allow cell text longer than 32,767 characters
     */
    @Test
    public void bug46368() {
        HSSFWorkbook wb = openSample("46368.xls");
    	HSSFSheet s = wb.getSheetAt(0);
        HSSFCell cell1 = s.getRow(0).getCell(0);
        assertEquals(32770, cell1.getStringCellValue().length());

        HSSFCell cell2 = s.getRow(2).getCell(0);
        assertEquals(32766, cell2.getStringCellValue().length());
    }

    /**
     * Short records on certain sheets with charts in them
     */
    @Test
    public void bug48180() {
        HSSFWorkbook wb = openSample("48180.xls");

    	HSSFSheet s = wb.getSheetAt(0);
        HSSFCell cell1 = s.getRow(0).getCell(0);
        assertEquals("test ", cell1.getStringCellValue());

        HSSFCell cell2 = s.getRow(0).getCell(1);
        assertEquals(1.0, cell2.getNumericCellValue(), 0.0);
    }

    /**
     * POI 3.5 beta 7 can not read excel file contain list box (Form Control)
     */
    @Test
    public void bug47701() {
        openSample("47701.xls");
    }

    @Test
    public void bug48026() {
        openSample("48026.xls");
    }

    @Test
    public void bug47251() {
        // Firstly, try with one that triggers on InterfaceHdrRecord
        openSample("47251.xls");
        
        // Now with one that triggers on NoteRecord
        openSample("47251_1.xls");
    }
    
    /**
     * Round trip a file with an unusual UnicodeString/ExtRst record parts
     */
    @Test
    public void bug47847() throws Exception {
       HSSFWorkbook wb = openSample("47847.xls");
       assertEquals(3, wb.getNumberOfSheets());
       
       // Find the SST record
       UnicodeString withExt = wb.getWorkbook().getSSTString(0);
       UnicodeString withoutExt = wb.getWorkbook().getSSTString(31);
       
       assertEquals("O:Alloc:Qty", withExt.getString());
       assertTrue((withExt.getOptionFlags() & 0x0004) == 0x0004);
       
       assertEquals("RT", withoutExt.getString());
       assertTrue((withoutExt.getOptionFlags() & 0x0004) == 0x0000);
       
       // Something about continues...

       
       // Write out and re-read
       wb = writeOutAndReadBack(wb);
       assertEquals(3, wb.getNumberOfSheets());
       
       // Check it's the same now
       withExt = wb.getWorkbook().getSSTString(0);
       withoutExt = wb.getWorkbook().getSSTString(31);
       
       assertEquals("O:Alloc:Qty", withExt.getString());
       assertTrue((withExt.getOptionFlags() & 0x0004) == 0x0004);
       
       assertEquals("RT", withoutExt.getString());
       assertTrue((withoutExt.getOptionFlags() & 0x0004) == 0x0000);
    }
    
    /**
     * Problem with cloning a sheet with a chart
     *  contained in it.
     */
    @Test
    public void bug49096() throws Exception {
       HSSFWorkbook wb = openSample("49096.xls");
       assertEquals(1, wb.getNumberOfSheets());
       
       assertNotNull(wb.getSheetAt(0));
       wb.cloneSheet(0);
       assertEquals(2, wb.getNumberOfSheets());
       
       wb = writeOutAndReadBack(wb);
       assertEquals(2, wb.getNumberOfSheets());
    }
    
    /**
     * Newly created sheets need to get a 
     *  proper TabID, otherwise print setup
     *  gets confused on them.
     * Also ensure that print setup refs are
     *  by reference not value 
     */
    @Test
    public void bug46664() throws Exception {
       HSSFWorkbook wb = new HSSFWorkbook();
       HSSFSheet sheet = wb.createSheet("new_sheet");
       HSSFRow row = sheet.createRow((short)0);
       row.createCell(0).setCellValue(new HSSFRichTextString("Column A"));
       row.createCell(1).setCellValue(new HSSFRichTextString("Column B"));
       row.createCell(2).setCellValue(new HSSFRichTextString("Column C"));
       row.createCell(3).setCellValue(new HSSFRichTextString("Column D"));
       row.createCell(4).setCellValue(new HSSFRichTextString("Column E"));
       row.createCell(5).setCellValue(new HSSFRichTextString("Column F"));

       //set print area from column a to column c (on first row)
       wb.setPrintArea(
               0, //sheet index
               0, //start column
               2, //end column
               0, //start row
               0  //end row
       );
       
       wb = writeOutAndReadBack(wb);
       
       // Ensure the tab index
       TabIdRecord tr = null;
       for(Record r : wb.getWorkbook().getRecords()) {
          if(r instanceof TabIdRecord) {
             tr = (TabIdRecord)r;
          }
       }
       assertNotNull(tr);
       assertEquals(1, tr._tabids.length);
       assertEquals(0, tr._tabids[0]);
       
       // Ensure the print setup
       assertEquals("new_sheet!$A$1:$C$1", wb.getPrintArea(0));
       assertEquals("new_sheet!$A$1:$C$1", wb.getName("Print_Area").getRefersToFormula());
       
       // Needs reference not value
       NameRecord nr = wb.getWorkbook().getNameRecord(
             wb.getNameIndex("Print_Area")
       ); 
       assertEquals("Print_Area", nr.getNameText());
       assertEquals(1, nr.getNameDefinition().length);
       assertEquals(
             "new_sheet!$A$1:$C$1", 
             ((Area3DPtg)nr.getNameDefinition()[0]).toFormulaString(HSSFEvaluationWorkbook.create(wb))
       );
       assertEquals('R', nr.getNameDefinition()[0].getRVAType());
    }
    
    /**
     * Problems with formula references to 
     *  sheets via URLs
     */
    @Test
    public void bug45970() throws Exception {
       HSSFWorkbook wb = openSample("FormulaRefs.xls");
       assertEquals(3, wb.getNumberOfSheets());
       
       HSSFSheet s = wb.getSheetAt(0);
       HSSFRow row;
       
       row = s.getRow(0);
       assertEquals(Cell.CELL_TYPE_NUMERIC, row.getCell(1).getCellType());
       assertEquals(112.0, row.getCell(1).getNumericCellValue(), 0);
       
       row = s.getRow(1);
       assertEquals(Cell.CELL_TYPE_FORMULA, row.getCell(1).getCellType());
       assertEquals("B1", row.getCell(1).getCellFormula());
       assertEquals(112.0, row.getCell(1).getNumericCellValue(), 0);
       
       row = s.getRow(2);
       assertEquals(Cell.CELL_TYPE_FORMULA, row.getCell(1).getCellType());
       assertEquals("Sheet1!B1", row.getCell(1).getCellFormula());
       assertEquals(112.0, row.getCell(1).getNumericCellValue(), 0);
       
       row = s.getRow(3);
       assertEquals(Cell.CELL_TYPE_FORMULA, row.getCell(1).getCellType());
       assertEquals("[Formulas2.xls]Sheet1!B2", row.getCell(1).getCellFormula());
       assertEquals(112.0, row.getCell(1).getNumericCellValue(), 0);
       
       row = s.getRow(4);
       assertEquals(Cell.CELL_TYPE_FORMULA, row.getCell(1).getCellType());
       assertEquals("'[$http://gagravarr.org/FormulaRefs.xls]Sheet1'!B1", row.getCell(1).getCellFormula());
       assertEquals(112.0, row.getCell(1).getNumericCellValue(), 0);
       
       // Change 4
       row.getCell(1).setCellFormula("'[$http://gagravarr.org/FormulaRefs2.xls]Sheet1'!B2");
       row.getCell(1).setCellValue(123.0);
       
       // Add 5
       row = s.createRow(5);
       row.createCell(1, Cell.CELL_TYPE_FORMULA);
       row.getCell(1).setCellFormula("'[$http://example.com/FormulaRefs.xls]Sheet1'!B1");
       row.getCell(1).setCellValue(234.0);
       
       
       // Re-test
       wb = writeOutAndReadBack(wb);
       s = wb.getSheetAt(0);
       
       row = s.getRow(0);
       assertEquals(Cell.CELL_TYPE_NUMERIC, row.getCell(1).getCellType());
       assertEquals(112.0, row.getCell(1).getNumericCellValue(),0);
       
       row = s.getRow(1);
       assertEquals(Cell.CELL_TYPE_FORMULA, row.getCell(1).getCellType());
       assertEquals("B1", row.getCell(1).getCellFormula());
       assertEquals(112.0, row.getCell(1).getNumericCellValue(), 0);
       
       row = s.getRow(2);
       assertEquals(Cell.CELL_TYPE_FORMULA, row.getCell(1).getCellType());
       assertEquals("Sheet1!B1", row.getCell(1).getCellFormula());
       assertEquals(112.0, row.getCell(1).getNumericCellValue(), 0);
       
       row = s.getRow(3);
       assertEquals(Cell.CELL_TYPE_FORMULA, row.getCell(1).getCellType());
       assertEquals("[Formulas2.xls]Sheet1!B2", row.getCell(1).getCellFormula());
       assertEquals(112.0, row.getCell(1).getNumericCellValue(), 0);
       
       // TODO - Fix these so they work...
       if(1==2) {
           row = s.getRow(4);
           assertEquals(Cell.CELL_TYPE_FORMULA, row.getCell(1).getCellType());
           assertEquals("'[$http://gagravarr.org/FormulaRefs2.xls]Sheet1'!B2", row.getCell(1).getCellFormula());
           assertEquals(123.0, row.getCell(1).getNumericCellValue(), 0);
           
           row = s.getRow(5);
           assertEquals(Cell.CELL_TYPE_FORMULA, row.getCell(1).getCellType());
           assertEquals("'[$http://example.com/FormulaRefs.xls]Sheet1'!B1", row.getCell(1).getCellFormula());
           assertEquals(234.0, row.getCell(1).getNumericCellValue(), 0);
       }
    }
    
    /**
     * Test for a file with NameRecord with NameCommentRecord comments
     */
    @Test
    public void bug49185() throws Exception {
      HSSFWorkbook wb = openSample("49185.xls");
      Name name = wb.getName("foobarName");
      assertEquals("This is a comment", name.getComment());
      
      // Rename the name, comment comes with it
      name.setNameName("ChangedName");
      assertEquals("This is a comment", name.getComment());
      
      // Save and re-check
      wb = writeOutAndReadBack(wb);
      name = wb.getName("ChangedName");
      assertEquals("This is a comment", name.getComment());
      
      // Now try to change it
      name.setComment("Changed Comment");
      assertEquals("Changed Comment", name.getComment());
      
      // Save and re-check
      wb = writeOutAndReadBack(wb);
      name = wb.getName("ChangedName");
      assertEquals("Changed Comment", name.getComment());
    }
    
    /**
     * Vertically aligned text
     */
    @Test
    public void bug49524() throws Exception {
       HSSFWorkbook wb = openSample("49524.xls");
       Sheet s = wb.getSheetAt(0);
       Row r = s.getRow(0);
       Cell rotated = r.getCell(0);
       Cell normal = r.getCell(1);
       
       // Check the current ones
       assertEquals(0, normal.getCellStyle().getRotation());
       assertEquals(0xff, rotated.getCellStyle().getRotation());
       
       // Add a new style, also rotated
       CellStyle cs = wb.createCellStyle();
       cs.setRotation((short)0xff);
       Cell nc = r.createCell(2);
       nc.setCellValue("New Rotated Text");
       nc.setCellStyle(cs);
       assertEquals(0xff, nc.getCellStyle().getRotation());
       
       // Write out and read back
       wb = writeOutAndReadBack(wb);
       
       // Re-check
       s = wb.getSheetAt(0);
       r = s.getRow(0);
       rotated = r.getCell(0);
       normal = r.getCell(1);
       nc = r.getCell(2);
       
       assertEquals(0, normal.getCellStyle().getRotation());
       assertEquals(0xff, rotated.getCellStyle().getRotation());
       assertEquals(0xff, nc.getCellStyle().getRotation());
    }
    
    /**
     * Setting the user style name on custom styles
     */
    @Test
    public void bug49689() throws Exception {
       HSSFWorkbook wb = new HSSFWorkbook();
       HSSFSheet s = wb.createSheet("Test");
       HSSFRow r = s.createRow(0);
       HSSFCell c = r.createCell(0);
       
       HSSFCellStyle cs1 = wb.createCellStyle();
       HSSFCellStyle cs2 = wb.createCellStyle();
       HSSFCellStyle cs3 = wb.createCellStyle();
       
       assertEquals(21, cs1.getIndex());
       cs1.setUserStyleName("Testing");
       
       assertEquals(22, cs2.getIndex());
       cs2.setUserStyleName("Testing 2");
       
       assertEquals(23, cs3.getIndex());
       cs3.setUserStyleName("Testing 3");
       
       // Set one
       c.setCellStyle(cs1);
       
       // Write out and read back
       wb = writeOutAndReadBack(wb);
       
       // Re-check
       assertEquals("Testing", wb.getCellStyleAt((short)21).getUserStyleName());
       assertEquals("Testing 2", wb.getCellStyleAt((short)22).getUserStyleName());
       assertEquals("Testing 3", wb.getCellStyleAt((short)23).getUserStyleName());
    }

    @Test
    public void bug49751() {
        HSSFWorkbook wb = openSample("49751.xls");
        short numCellStyles = wb.getNumCellStyles();
        List<String> namedStyles = Arrays.asList(
                "20% - Accent1", "20% - Accent2", "20% - Accent3", "20% - Accent4", "20% - Accent5",
                "20% - Accent6", "40% - Accent1", "40% - Accent2", "40% - Accent3", "40% - Accent4", 
                "40% - Accent5", "40% - Accent6", "60% - Accent1", "60% - Accent2", "60% - Accent3",
                "60% - Accent4", "60% - Accent5", "60% - Accent6", "Accent1", "Accent2", "Accent3",
                "Accent4", "Accent5", "Accent6", "Bad", "Calculation", "Check Cell", "Explanatory Text",
                "Good", "Heading 1", "Heading 2", "Heading 3", "Heading 4", "Input", "Linked Cell",
                "Neutral", "Note", "Output", "Title", "Total", "Warning Text");

        List<String> collecteddStyles = new ArrayList<String>();
        for (short i = 0; i < numCellStyles; i++) {
            HSSFCellStyle cellStyle = wb.getCellStyleAt(i);
            String styleName = cellStyle.getUserStyleName();
            if (styleName != null) {
                collecteddStyles.add(styleName);
            }
        }
        assertTrue(namedStyles.containsAll(collecteddStyles));
    }    
    
    /**
     * Regression with the PageSettingsBlock
     */
    @Test
    public void bug49931() throws Exception {
       HSSFWorkbook wb = openSample("49931.xls");
       
       assertEquals(1, wb.getNumberOfSheets());
       assertEquals("Foo", wb.getSheetAt(0).getRow(0).getCell(0).getRichStringCellValue().toString());
    }
    
    /**
     * Missing left/right/centre options on a footer
     */
    @Test
    public void bug48325() throws Exception {
       HSSFWorkbook wb = openSample("48325.xls");
       HSSFSheet sh = wb.getSheetAt(0);
       HSSFFooter f = sh.getFooter();

       // Will show as the centre, as that is what excel does
       //  with an invalid footer lacking left/right/centre details
       assertEquals("Left text should be empty", "", f.getLeft());
       assertEquals("Right text should be empty", "", f.getRight());
       assertEquals(
             "Center text should contain the illegal value", 
             "BlahBlah blah blah  ", f.getCenter()
       );
    }

    /**
     * IllegalStateException received when creating Data validation in sheet with macro
     */
    @Test
    public void bug50020() throws Exception {
       HSSFWorkbook wb = openSample("50020.xls");
       writeOutAndReadBack(wb);
    }

    @Test
    public void bug50426() throws Exception {
       HSSFWorkbook wb = openSample("50426.xls");
       writeOutAndReadBack(wb);
    }
    
    /**
     * Last row number when shifting rows
     */
    @Test
    public void bug50416LastRowNumber() {
       // Create the workbook with 1 sheet which contains 3 rows
       HSSFWorkbook workbook = new HSSFWorkbook();
       Sheet sheet = workbook.createSheet("Bug50416");
       Row row1 = sheet.createRow(0);
       Cell cellA_1 = row1.createCell(0,Cell.CELL_TYPE_STRING);
       cellA_1.setCellValue("Cell A,1");
       Row row2 = sheet.createRow(1);
       Cell cellA_2 = row2.createCell(0,Cell.CELL_TYPE_STRING);
       cellA_2.setCellValue("Cell A,2");
       Row row3 = sheet.createRow(2);
       Cell cellA_3 = row3.createCell(0,Cell.CELL_TYPE_STRING);
       cellA_3.setCellValue("Cell A,3");
       
       // Test the last Row number it currently correct
       assertEquals(2, sheet.getLastRowNum());
       
       // Shift the first row to the end
       sheet.shiftRows(0, 0, 3);
       assertEquals(3, sheet.getLastRowNum());
       assertEquals(-1,         sheet.getRow(0).getLastCellNum());
       assertEquals("Cell A,2", sheet.getRow(1).getCell(0).getStringCellValue());
       assertEquals("Cell A,3", sheet.getRow(2).getCell(0).getStringCellValue());
       assertEquals("Cell A,1", sheet.getRow(3).getCell(0).getStringCellValue());
       
       // Shift the 2nd row up to the first one
       sheet.shiftRows(1, 1, -1);
       assertEquals(3, sheet.getLastRowNum());
       assertEquals("Cell A,2", sheet.getRow(0).getCell(0).getStringCellValue());
       assertEquals(-1,         sheet.getRow(1).getLastCellNum());
       assertEquals("Cell A,3", sheet.getRow(2).getCell(0).getStringCellValue());
       assertEquals("Cell A,1", sheet.getRow(3).getCell(0).getStringCellValue());

       // Shift the 4th row up into the gap in the 3rd row
       sheet.shiftRows(3, 3, -2);
       assertEquals(2, sheet.getLastRowNum());
       assertEquals("Cell A,2", sheet.getRow(0).getCell(0).getStringCellValue());
       assertEquals("Cell A,1", sheet.getRow(1).getCell(0).getStringCellValue());
       assertEquals("Cell A,3", sheet.getRow(2).getCell(0).getStringCellValue());
       assertEquals(-1,         sheet.getRow(3).getLastCellNum());
       
       // Now zap the empty 4th row - won't do anything
       sheet.removeRow(sheet.getRow(3));
       
       // Test again the last row number which should be 2
       assertEquals(2, sheet.getLastRowNum());
       assertEquals("Cell A,2", sheet.getRow(0).getCell(0).getStringCellValue());
       assertEquals("Cell A,1", sheet.getRow(1).getCell(0).getStringCellValue());
       assertEquals("Cell A,3", sheet.getRow(2).getCell(0).getStringCellValue());
    }
    
    /**
     * If you send a file between Excel and OpenOffice enough, something
     *  will turn the "General" format into "GENERAL"
     */
    @Test
    public void bug50756() throws Exception {
       HSSFWorkbook wb = openSample("50756.xls");
       HSSFSheet s = wb.getSheetAt(0);
       HSSFRow r17 = s.getRow(16);
       HSSFRow r18 = s.getRow(17);
       HSSFDataFormatter df = new HSSFDataFormatter();
       
       assertEquals(10.0, r17.getCell(1).getNumericCellValue(), 0);
       assertEquals(20.0, r17.getCell(2).getNumericCellValue(), 0);
       assertEquals(20.0, r17.getCell(3).getNumericCellValue(), 0);
       assertEquals("GENERAL", r17.getCell(1).getCellStyle().getDataFormatString());
       assertEquals("GENERAL", r17.getCell(2).getCellStyle().getDataFormatString());
       assertEquals("GENERAL", r17.getCell(3).getCellStyle().getDataFormatString());
       assertEquals("10", df.formatCellValue(r17.getCell(1)));
       assertEquals("20", df.formatCellValue(r17.getCell(2)));
       assertEquals("20", df.formatCellValue(r17.getCell(3)));
       
       assertEquals(16.0, r18.getCell(1).getNumericCellValue(), 0);
       assertEquals(35.0, r18.getCell(2).getNumericCellValue(), 0);
       assertEquals(123.0, r18.getCell(3).getNumericCellValue(), 0);
       assertEquals("GENERAL", r18.getCell(1).getCellStyle().getDataFormatString());
       assertEquals("GENERAL", r18.getCell(2).getCellStyle().getDataFormatString());
       assertEquals("GENERAL", r18.getCell(3).getCellStyle().getDataFormatString());
       assertEquals("16", df.formatCellValue(r18.getCell(1)));
       assertEquals("35", df.formatCellValue(r18.getCell(2)));
       assertEquals("123", df.formatCellValue(r18.getCell(3)));
    }
    
    /**
     * A protected sheet with comments, when written out by
     *  POI, ends up upsetting excel.
     * TODO Identify the cause and add extra asserts for
     *  the bit excel cares about
     */
    @Test
    public void bug50833() throws Exception {
       Biff8EncryptionKey.setCurrentUserPassword(null); 
        
       HSSFWorkbook wb = openSample("50833.xls");
       HSSFSheet s = wb.getSheetAt(0);
       assertEquals("Sheet1", s.getSheetName());
       assertEquals(false, s.getProtect());
       
       HSSFCell c = s.getRow(0).getCell(0);
       assertEquals("test cell value", c.getRichStringCellValue().getString());
       
       HSSFComment cmt = c.getCellComment();
       assertNotNull(cmt);
       assertEquals("Robert Lawrence", cmt.getAuthor());
       assertEquals("Robert Lawrence:\ntest comment", cmt.getString().getString());
       
       // Reload
       wb = writeOutAndReadBack(wb);
       s = wb.getSheetAt(0);
       c = s.getRow(0).getCell(0);
       
       // Re-check the comment
       cmt = c.getCellComment();
       assertNotNull(cmt);
       assertEquals("Robert Lawrence", cmt.getAuthor());
       assertEquals("Robert Lawrence:\ntest comment", cmt.getString().getString());
       
       // TODO Identify what excel doesn't like, and check for that
    }

    @Test
    public void bug50779() throws Exception {
       HSSFWorkbook wb1 = openSample("50779_1.xls");
       writeOutAndReadBack(wb1);

        HSSFWorkbook wb2 = openSample("50779_2.xls");
        writeOutAndReadBack(wb2);
    }

    /**
     * The spec says that ChartEndObjectRecord has 6 reserved
     *  bytes on the end, but we sometimes find files without... 
     */
    @Test
    public void bug50939() throws Exception {
       HSSFWorkbook wb = openSample("50939.xls");
       assertEquals(2, wb.getNumberOfSheets());
    }
    
    @Test
    public void bug49219() throws Exception {
       HSSFWorkbook wb = openSample("49219.xls");
       assertEquals(1, wb.getNumberOfSheets());
       assertEquals("DGATE", wb.getSheetAt(0).getRow(1).getCell(0).getStringCellValue());
    }
    
    @Test
    public void bug48968() throws Exception {
       HSSFWorkbook wb = openSample("48968.xls");
       assertEquals(1, wb.getNumberOfSheets());
       
       DataFormatter fmt = new DataFormatter();

       // Check the dates
       HSSFSheet s = wb.getSheetAt(0);
       Cell cell_d20110325 = s.getRow(0).getCell(0);
       Cell cell_d19000102 = s.getRow(11).getCell(0);
       Cell cell_d19000100 = s.getRow(21).getCell(0);
       assertEquals(s.getRow(0).getCell(3).getStringCellValue(), fmt.formatCellValue(cell_d20110325));
       assertEquals(s.getRow(11).getCell(3).getStringCellValue(), fmt.formatCellValue(cell_d19000102));
       // There is no such thing as 00/01/1900...
       assertEquals("00/01/1900 06:14:24", s.getRow(21).getCell(3).getStringCellValue());
       assertEquals("31/12/1899 06:14:24", fmt.formatCellValue(cell_d19000100));
       
       // Check the cached values
       assertEquals("HOUR(A1)",   s.getRow(5).getCell(0).getCellFormula());
       assertEquals(11.0,         s.getRow(5).getCell(0).getNumericCellValue(), 0);
       assertEquals("MINUTE(A1)", s.getRow(6).getCell(0).getCellFormula());
       assertEquals(39.0,         s.getRow(6).getCell(0).getNumericCellValue(), 0);
       assertEquals("SECOND(A1)", s.getRow(7).getCell(0).getCellFormula());
       assertEquals(54.0,         s.getRow(7).getCell(0).getNumericCellValue(), 0);
       
       // Re-evaulate and check
       HSSFFormulaEvaluator.evaluateAllFormulaCells(wb);
       assertEquals("HOUR(A1)",   s.getRow(5).getCell(0).getCellFormula());
       assertEquals(11.0,         s.getRow(5).getCell(0).getNumericCellValue(), 0);
       assertEquals("MINUTE(A1)", s.getRow(6).getCell(0).getCellFormula());
       assertEquals(39.0,         s.getRow(6).getCell(0).getNumericCellValue(), 0);
       assertEquals("SECOND(A1)", s.getRow(7).getCell(0).getCellFormula());
       assertEquals(54.0,         s.getRow(7).getCell(0).getNumericCellValue(), 0);
       
       // Push the time forward a bit and check
       double date = s.getRow(0).getCell(0).getNumericCellValue();
       s.getRow(0).getCell(0).setCellValue(date + 1.26);
       
       HSSFFormulaEvaluator.evaluateAllFormulaCells(wb);
       assertEquals("HOUR(A1)",   s.getRow(5).getCell(0).getCellFormula());
       assertEquals(11.0+6.0,     s.getRow(5).getCell(0).getNumericCellValue(), 0);
       assertEquals("MINUTE(A1)", s.getRow(6).getCell(0).getCellFormula());
       assertEquals(39.0+14.0+1,  s.getRow(6).getCell(0).getNumericCellValue(), 0);
       assertEquals("SECOND(A1)", s.getRow(7).getCell(0).getCellFormula());
       assertEquals(54.0+24.0-60, s.getRow(7).getCell(0).getNumericCellValue(), 0);
    }
    
    /**
     * Mixture of Ascii and Unicode strings in a 
     *  NameComment record
     */
    @Test
    public void bug51143() throws Exception {
       HSSFWorkbook wb = openSample("51143.xls");
       assertEquals(1, wb.getNumberOfSheets());
       wb = writeOutAndReadBack(wb);
       assertEquals(1, wb.getNumberOfSheets());
    }
    
    /**
     * File with exactly 256 data blocks (+header block)
     *  shouldn't break on POIFS loading 
     */
    @SuppressWarnings("resource")
    @Test
    public void bug51461() throws Exception {
       byte[] data = HSSFITestDataProvider.instance.getTestDataFileContent("51461.xls");
       
       HSSFWorkbook wbPOIFS = new HSSFWorkbook(new POIFSFileSystem(
             new ByteArrayInputStream(data)).getRoot(), false);
       HSSFWorkbook wbNPOIFS = new HSSFWorkbook(new NPOIFSFileSystem(
             new ByteArrayInputStream(data)).getRoot(), false);
       
       assertEquals(2, wbPOIFS.getNumberOfSheets());
       assertEquals(2, wbNPOIFS.getNumberOfSheets());
    }
    
    /**
     * Large row numbers and NPOIFS vs POIFS
     */
    @SuppressWarnings("resource")
    @Test
    public void bug51535() throws Exception {
       byte[] data = HSSFITestDataProvider.instance.getTestDataFileContent("51535.xls");
       
       HSSFWorkbook wbPOIFS = new HSSFWorkbook(new POIFSFileSystem(
             new ByteArrayInputStream(data)).getRoot(), false);
       HSSFWorkbook wbNPOIFS = new HSSFWorkbook(new NPOIFSFileSystem(
             new ByteArrayInputStream(data)).getRoot(), false);
       
       for(HSSFWorkbook wb : new HSSFWorkbook[] {wbPOIFS, wbNPOIFS}) {
          assertEquals(3, wb.getNumberOfSheets());
          
          // Check directly
          HSSFSheet s = wb.getSheetAt(0);
          assertEquals("Top Left Cell", s.getRow(0).getCell(0).getStringCellValue());
          assertEquals("Top Right Cell", s.getRow(0).getCell(255).getStringCellValue());
          assertEquals("Bottom Left Cell", s.getRow(65535).getCell(0).getStringCellValue());
          assertEquals("Bottom Right Cell", s.getRow(65535).getCell(255).getStringCellValue());
          
          // Extract and check
          ExcelExtractor ex = new ExcelExtractor(wb);
          String text = ex.getText();
          assertTrue(text.contains("Top Left Cell"));
          assertTrue(text.contains("Top Right Cell"));
          assertTrue(text.contains("Bottom Left Cell"));
          assertTrue(text.contains("Bottom Right Cell"));
          ex.close();
       }
    }

    @Test
    public void bug51670() {
        HSSFWorkbook wb = openSample("51670.xls");
        writeOutAndReadBack(wb);
    }
    
    /**
     * Sum across multiple workbooks
     *  eg =SUM($Sheet2.A1:$Sheet3.A1)
     * DISABLED - We currently get the formula wrong, and mis-evaluate
     */
    @Ignore
    public void test48703() {
        HSSFWorkbook wb = openSample("48703.xls");
        assertEquals(3, wb.getNumberOfSheets());
        
        // Check reading the formula
        Sheet sheet = wb.getSheetAt(0);
        Row r = sheet.getRow(0);
        Cell c = r.getCell(0);
        
        assertEquals("SUM(Sheet2!A1:Sheet3!A1)", c.getCellFormula());
        assertEquals(4.0, c.getNumericCellValue(), 0);
        
        // Check the evaluated result
        HSSFFormulaEvaluator eval = new HSSFFormulaEvaluator(wb);
        eval.evaluateFormulaCell(c);
        assertEquals(4.0, c.getNumericCellValue(), 0);
    }

    /**
     * Normally encrypted files have BOF then FILEPASS, but
     *  some may squeeze a WRITEPROTECT in the middle
     */
    @Test(expected=EncryptedDocumentException.class)
    public void bug51832() {
        openSample("51832.xls");
    }

    @Test
    public void bug49896() {
        HSSFWorkbook wb = openSample("49896.xls");
        HSSFCell  cell = wb.getSheetAt(0).getRow(1).getCell(1);
        String PATH_SEPARATOR = System.getProperty("file.separator");
        assertEquals("VLOOKUP(A2,'[C:Documents and Settings" + PATH_SEPARATOR+"Yegor"+PATH_SEPARATOR
                +"My Documents"+PATH_SEPARATOR+"csco.xls]Sheet1'!$A$2:$B$3,2,FALSE)",
                cell.getCellFormula());
     }

    @Test
    public void bug49529() throws Exception {
        // user code reported in Bugzilla #49529
        HSSFWorkbook workbook = openSample("49529.xls");
        workbook.getSheetAt(0).createDrawingPatriarch();
        // prior to the fix the line below failed with
        // java.lang.IllegalStateException: EOF - next record not available
        workbook.cloneSheet(0);

        // make sure we are still readable
        writeOutAndReadBack(workbook);
    }
    
    /**
     * Note - part of this test is still failing, see
     * {@link TestUnfixedBugs#test49612()}
     */
    @Test
    public void bug49612_part() throws IOException {
        HSSFWorkbook wb = HSSFTestDataSamples.openSampleWorkbook("49612.xls");
        HSSFSheet sh = wb.getSheetAt(0);
        HSSFRow row = sh.getRow(0);
        HSSFCell c1 = row.getCell(2);
        HSSFCell d1 = row.getCell(3);
        HSSFCell e1 = row.getCell(2);

        assertEquals("SUM(BOB+JIM)", c1.getCellFormula());

        // Problem 1: See TestUnfixedBugs#test49612()
        // Problem 2: TestUnfixedBugs#test49612()

        // Problem 3: These used to fail, now pass
        HSSFFormulaEvaluator eval = new HSSFFormulaEvaluator(wb);
        assertEquals("evaluating c1", 30.0, eval.evaluate(c1).getNumberValue(), 0.001);
        assertEquals("evaluating d1", 30.0, eval.evaluate(d1).getNumberValue(), 0.001);
        assertEquals("evaluating e1", 30.0, eval.evaluate(e1).getNumberValue(), 0.001);
    }
    
    @Test
    public void bug51675(){
        final List<Short> list = new ArrayList<Short>();
        HSSFWorkbook workbook = openSample("51675.xls");
        HSSFSheet sh = workbook.getSheetAt(0);
        InternalSheet ish = HSSFTestHelper.getSheetForTest(sh);
        PageSettingsBlock psb = (PageSettingsBlock) ish.getRecords().get(13);
        psb.visitContainedRecords(new RecordAggregate.RecordVisitor() {
            public void visitRecord(Record r) {
                list.add(r.getSid());
            }
        });
        assertTrue(list.get(list.size()-1).intValue() == UnknownRecord.BITMAP_00E9);
        assertTrue(list.get(list.size()-2).intValue() == UnknownRecord.HEADER_FOOTER_089C);
    }
    
    @Test
    public void bug52272(){
        HSSFWorkbook wb = new HSSFWorkbook();
        HSSFSheet sh = wb.createSheet();
        HSSFPatriarch p = sh.createDrawingPatriarch();
        
        HSSFSimpleShape s = p.createSimpleShape(new HSSFClientAnchor());
        s.setShapeType(HSSFSimpleShape.OBJECT_TYPE_LINE);

        HSSFSheet sh2 = wb.cloneSheet(0);
        assertNotNull(sh2.getDrawingPatriarch());
    }

    @Test
    public void bug53432(){
        Workbook wb = new HSSFWorkbook(); //or new HSSFWorkbook();
        wb.addPicture(new byte[]{123,22}, Workbook.PICTURE_TYPE_JPEG);
        assertEquals(wb.getAllPictures().size(), 1);

        wb = new HSSFWorkbook();
        wb = writeOutAndReadBack((HSSFWorkbook) wb);
        assertEquals(wb.getAllPictures().size(), 0);
        wb.addPicture(new byte[]{123,22}, Workbook.PICTURE_TYPE_JPEG);
        assertEquals(wb.getAllPictures().size(), 1);

        wb = writeOutAndReadBack((HSSFWorkbook) wb);
        assertEquals(wb.getAllPictures().size(), 1);
    }

    @Test
    public void bug46250(){
        Workbook wb = openSample("46250.xls");
        Sheet sh = wb.getSheet("Template");
        Sheet cSh = wb.cloneSheet(wb.getSheetIndex(sh));

        HSSFPatriarch patriarch = (HSSFPatriarch) cSh.createDrawingPatriarch();
        HSSFTextbox tb = (HSSFTextbox) patriarch.getChildren().get(2);

        tb.setString(new HSSFRichTextString("POI test"));
        tb.setAnchor(new HSSFClientAnchor(0,0,0,0,(short)0,0,(short)10,10));

        wb = writeOutAndReadBack((HSSFWorkbook) wb);
    }

    @Test
    public void bug53404(){
        Workbook wb = openSample("53404.xls");
        Sheet sheet = wb.getSheet("test-sheet");
        int rowCount = sheet.getLastRowNum() + 1;
        int newRows = 5;
        for (int r = rowCount; r < rowCount + newRows; r++) {
            Row row = sheet.createRow((short) r);
            row.createCell(0).setCellValue(1.03 * (r + 7));
            row.createCell(1).setCellValue(new Date());
            row.createCell(2).setCellValue(Calendar.getInstance());
            row.createCell(3).setCellValue(String.format("row:%d/col:%d", r, 3));
            row.createCell(4).setCellValue(true);
            row.createCell(5).setCellType(Cell.CELL_TYPE_ERROR);
            row.createCell(6).setCellValue("added cells.");
        }

        wb = writeOutAndReadBack((HSSFWorkbook) wb);
    }

    @Test
    public void bug54016() {
        // This used to break
        HSSFWorkbook wb = openSample("54016.xls");
        wb = HSSFTestDataSamples.writeOutAndReadBack(wb);
    }

    /** Row style information is 12 not 16 bits */
    @Test
    public void bug49237() {
        HSSFWorkbook wb = openSample("49237.xls");
        HSSFSheet sheet = wb.getSheetAt(0);
        HSSFRow row = sheet.getRow(0);
        HSSFCellStyle rstyle = row.getRowStyle();
        assertEquals(rstyle.getBorderBottom(), HSSFCellStyle.BORDER_DOUBLE);
    }

    @Test
    public void bug35897() throws Exception {
        // password is abc
        try {
            Biff8EncryptionKey.setCurrentUserPassword("abc");
            openSample("xor-encryption-abc.xls");
        } finally {
            Biff8EncryptionKey.setCurrentUserPassword(null);
        }
        
        // One using the only-recently-documented encryption header type 4,
        //  and the RC4 CryptoAPI encryption header structure
        try {
            openSample("35897-type4.xls");
            fail("POI doesn't currently support the RC4 CryptoAPI encryption header structure");
        } catch (EncryptedDocumentException e) {}
    }

    @Test
    public void bug56450() {
        HSSFWorkbook wb = openSample("56450.xls");
        HSSFSheet sheet = wb.getSheetAt(0);
        int comments = 0;
        for (Row r : sheet) {
            for (Cell c : r) {
                if (c.getCellComment() != null) {
                    assertNotNull(c.getCellComment().getString().getString());
                    comments++;
                }
            }
        }
        assertEquals(0, comments);
    }
    
    /**
     * Files initially created with Excel 2010 can have >3 CF rules
     */
    @Test
    public void bug56482() {
        HSSFWorkbook wb = openSample("56482.xls");
        assertEquals(1, wb.getNumberOfSheets());
        
        HSSFSheet sheet = wb.getSheetAt(0);
        HSSFSheetConditionalFormatting cf = sheet.getSheetConditionalFormatting();
        
        assertEquals(5, cf.getNumConditionalFormattings());
    }

    @Test
    public void bug56325() throws IOException {
        HSSFWorkbook wb;

        File file = HSSFTestDataSamples.getSampleFile("56325.xls");
        InputStream stream = new FileInputStream(file);
        try {
            POIFSFileSystem fs = new POIFSFileSystem(stream);
            wb = new HSSFWorkbook(fs);            
        } finally {
            stream.close();
        }
        
        assertEquals(3, wb.getNumberOfSheets());
        wb.removeSheetAt(0);
        assertEquals(2, wb.getNumberOfSheets());

        wb = HSSFTestDataSamples.writeOutAndReadBack(wb);
        assertEquals(2, wb.getNumberOfSheets());
        wb.removeSheetAt(0);
        assertEquals(1, wb.getNumberOfSheets());
        wb.removeSheetAt(0);
        assertEquals(0, wb.getNumberOfSheets());
        
        wb = HSSFTestDataSamples.writeOutAndReadBack(wb);
        assertEquals(0, wb.getNumberOfSheets());
    }
    
    /**
     * Formulas which reference named ranges, either in other
     *  sheets, or workbook scoped but in other workbooks.
     * Used to fail with 
     * java.lang.RuntimeException: Unexpected eval class (org.apache.poi.ss.formula.eval.NameXEval)
     */
    @Test
    public void bug56737() throws IOException {
        Workbook wb = openSample("56737.xls");
        
        // Check the named range definitions
        Name nSheetScope = wb.getName("NR_To_A1");
        Name nWBScope = wb.getName("NR_Global_B2");

        assertNotNull(nSheetScope);
        assertNotNull(nWBScope);
        
        assertEquals("Defines!$A$1", nSheetScope.getRefersToFormula());
        assertEquals("Defines!$B$2", nWBScope.getRefersToFormula());
        
        // Check the different kinds of formulas
        Sheet s = wb.getSheetAt(0);
        Cell cRefSName = s.getRow(1).getCell(3);
        Cell cRefWName = s.getRow(2).getCell(3);
        
        assertEquals("Defines!NR_To_A1", cRefSName.getCellFormula());
        
        // TODO Correct this, so that the filename is shown too, see bug #56742
        // This is what Excel itself shows
        //assertEquals("'56737.xls'!NR_Global_B2", cRefWName.getCellFormula());
        // TODO This isn't right, but it's what we currently generate....
        assertEquals("NR_Global_B2", cRefWName.getCellFormula());
        
        // Try to evaluate them
        FormulaEvaluator eval = wb.getCreationHelper().createFormulaEvaluator();
        assertEquals("Test A1", eval.evaluate(cRefSName).getStringValue());
        assertEquals(142, (int)eval.evaluate(cRefWName).getNumberValue());
        
        // Try to evaluate everything
        eval.evaluateAll();
    }
    
    /**
     * ClassCastException in HSSFOptimiser - StyleRecord cannot be cast to 
     * ExtendedFormatRecord when removing un-used styles
     */
    @Test
    public void bug54443() throws Exception {
        HSSFWorkbook workbook = new HSSFWorkbook( );
        HSSFCellStyle style = workbook.createCellStyle();
        HSSFCellStyle newStyle = workbook.createCellStyle();
                    
        HSSFSheet mySheet = workbook.createSheet();
        HSSFRow row = mySheet.createRow(0);
        HSSFCell cell = row.createCell(0);
        
        // Use style
        cell.setCellStyle(style);
        // Switch to newStyle, style is now un-used
        cell.setCellStyle(newStyle);
        
        // Optimise
        HSSFOptimiser.optimiseCellStyles(workbook);
    }
    
    /**
     * Intersection formula ranges, eg =(C2:D3 D3:E4)
     */
    @Test
    public void bug52111() throws Exception {
        Workbook wb = openSample("Intersection-52111.xls");
        Sheet s = wb.getSheetAt(0);

        // Check we can read it correctly
        Cell intF = s.getRow(2).getCell(0);
        assertEquals(Cell.CELL_TYPE_FORMULA, intF.getCellType());
        assertEquals(Cell.CELL_TYPE_NUMERIC, intF.getCachedFormulaResultType());
        
        assertEquals("(C2:D3 D3:E4)", intF.getCellFormula());
        
        // Check we can evaluate it correctly
        FormulaEvaluator eval = wb.getCreationHelper().createFormulaEvaluator();
        assertEquals("4.0", eval.evaluate(intF).formatAsString());
    }

    @Test
    public void bug42016() {
        Workbook wb = openSample("42016.xls");
        Sheet s = wb.getSheetAt(0);
        for(int row = 0;row < 7;row++) {
            assertEquals("A$1+B$1", s.getRow(row).getCell(2).getCellFormula());
        }        
    }

    /**
     * Unexpected record type (org.apache.poi.hssf.record.ColumnInfoRecord)
     */
    @Test
    public void bug53984() {
        Workbook wb = openSample("53984.xls");
        Sheet s = wb.getSheetAt(0);
        assertEquals("International Communication Services SA", s.getRow(2).getCell(0).getStringCellValue());
        assertEquals("Saudi Arabia-Riyadh", s.getRow(210).getCell(0).getStringCellValue());
    }
    
    /**
     * Read, write, read for formulas point to cells in other files.
     * See {@link #bug46670()} for the main test, this just
     *  covers reading an existing file and checking it.
     * TODO Fix this so that it works - formulas are ending up as
     *  #REF when being changed
     */
//    @Test
    public void bug46670_existing() {
        HSSFWorkbook wb;
        Sheet s;
        Cell c;
        
        // Expected values
        String refLocal = "'[refs/airport.xls]Sheet1'!$A$2";
        String refHttp  = "'[9http://www.principlesofeconometrics.com/excel/airline.xls]Sheet1'!$A$2";
        
        // Check we can read them correctly
        wb = openSample("46670_local.xls");
        s = wb.getSheetAt(0);
        assertEquals(refLocal, s.getRow(0).getCell(0).getCellFormula());
        
        wb = openSample("46670_http.xls");
        s = wb.getSheetAt(0);
        assertEquals(refHttp, s.getRow(0).getCell(0).getCellFormula());
        
        // Now try to set them to the same values, and ensure that
        //  they end up as they did before, even with a save and re-load
        wb = openSample("46670_local.xls");
        s = wb.getSheetAt(0);
        c = s.getRow(0).getCell(0);
        c.setCellFormula(refLocal);
        assertEquals(refLocal, c.getCellFormula());
        
        wb = HSSFTestDataSamples.writeOutAndReadBack(wb);
        s = wb.getSheetAt(0);
        assertEquals(refLocal, s.getRow(0).getCell(0).getCellFormula());

        
        wb = openSample("46670_http.xls");
        s = wb.getSheetAt(0);
        c = s.getRow(0).getCell(0);
        c.setCellFormula(refHttp);
        assertEquals(refHttp, c.getCellFormula());
        
        wb = HSSFTestDataSamples.writeOutAndReadBack(wb);
        s = wb.getSheetAt(0);
        assertEquals(refHttp, s.getRow(0).getCell(0).getCellFormula());
    }
}