/* ====================================================================
   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.ss.usermodel;

import static org.junit.Assert.assertEquals;
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.awt.font.FontRenderContext;
import java.awt.font.TextAttribute;
import java.awt.font.TextLayout;
import java.io.IOException;
import java.text.AttributedString;
import java.util.HashMap;
import java.util.Map;

import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.util.PaneInformation;
import org.apache.poi.ss.ITestDataProvider;
import org.apache.poi.ss.SpreadsheetVersion;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.ss.util.SheetUtil;
import org.apache.poi.util.StringUtil;
import org.junit.Assume;
import org.junit.Ignore;
import org.junit.Test;

/**
 * A base class for bugzilla issues that can be described in terms of common ss interfaces.
 *
 * @author Yegor Kozlov
 */
public abstract class BaseTestBugzillaIssues {

    private final ITestDataProvider _testDataProvider;

    protected BaseTestBugzillaIssues(ITestDataProvider testDataProvider) {
        _testDataProvider = testDataProvider;
    }
    
    public static void assertAlmostEquals(double expected, double actual, float factor) {
        double diff = Math.abs(expected - actual);
        double fuzz = expected * factor;
        if (diff > fuzz)
            fail(actual + " not within " + fuzz + " of " + expected);
    }

    /**
     * Test writing a hyperlink
     * Open resulting sheet in Excel and check that A1 contains a hyperlink
     *
     * Also tests bug 15353 (problems with hyperlinks to Google)
     */
    @Test
    public final void bug23094() {
        Workbook wb = _testDataProvider.createWorkbook();
        Sheet s = wb.createSheet();
        Row r = s.createRow(0);
        r.createCell(0).setCellFormula("HYPERLINK(\"http://jakarta.apache.org\",\"Jakarta\")");
        r.createCell(1).setCellFormula("HYPERLINK(\"http://google.com\",\"Google\")");

        wb = _testDataProvider.writeOutAndReadBack(wb);
        r = wb.getSheetAt(0).getRow(0);

        Cell cell_0 = r.getCell(0);
        assertEquals("HYPERLINK(\"http://jakarta.apache.org\",\"Jakarta\")", cell_0.getCellFormula());
        Cell cell_1 = r.getCell(1);
        assertEquals("HYPERLINK(\"http://google.com\",\"Google\")", cell_1.getCellFormula());
    }

    /**
     * test writing a file with large number of unique strings,
     * open resulting file in Excel to check results!
     * @param  num the number of strings to generate
     */
    public final void bug15375(int num) {
        Workbook wb = _testDataProvider.createWorkbook();
        Sheet sheet = wb.createSheet();
        CreationHelper factory = wb.getCreationHelper();

        String tmp1 = null;
        String tmp2 = null;
        String tmp3 = null;

        for (int i = 0; i < num; i++) {
            tmp1 = "Test1" + i;
            tmp2 = "Test2" + i;
            tmp3 = "Test3" + i;

            Row row = sheet.createRow(i);

            Cell cell = row.createCell(0);
            cell.setCellValue(factory.createRichTextString(tmp1));
            cell = row.createCell(1);
            cell.setCellValue(factory.createRichTextString(tmp2));
            cell = row.createCell(2);
            cell.setCellValue(factory.createRichTextString(tmp3));
        }
        wb = _testDataProvider.writeOutAndReadBack(wb);
        for (int i = 0; i < num; i++) {
            tmp1 = "Test1" + i;
            tmp2 = "Test2" + i;
            tmp3 = "Test3" + i;

            Row row = sheet.getRow(i);

            assertEquals(tmp1, row.getCell(0).getStringCellValue());
            assertEquals(tmp2, row.getCell(1).getStringCellValue());
            assertEquals(tmp3, row.getCell(2).getStringCellValue());
        }
    }

    /**
     * Merged regions were being removed from the parent in cloned sheets
     */
    @Test
    public void bug22720() {
       Workbook workBook = _testDataProvider.createWorkbook();
       workBook.createSheet("TEST");
       Sheet template = workBook.getSheetAt(0);

       template.addMergedRegion(new CellRangeAddress(0, 1, 0, 2));
       template.addMergedRegion(new CellRangeAddress(1, 2, 0, 2));

       Sheet clone = workBook.cloneSheet(0);
       int originalMerged = template.getNumMergedRegions();
       assertEquals("2 merged regions", 2, originalMerged);

       //remove merged regions from clone
       for (int i=template.getNumMergedRegions()-1; i>=0; i--) {
           clone.removeMergedRegion(i);
       }

       assertEquals("Original Sheet's Merged Regions were removed", originalMerged, template.getNumMergedRegions());
       //check if template's merged regions are OK
       if (template.getNumMergedRegions()>0) {
            // fetch the first merged region...EXCEPTION OCCURS HERE
            template.getMergedRegion(0);
       }
       //make sure we dont exception

    }

    @Test
    public final void bug28031() {
        Workbook wb = _testDataProvider.createWorkbook();
        Sheet sheet = wb.createSheet();
        wb.setSheetName(0, "Sheet1");

        Row row = sheet.createRow(0);
        Cell cell = row.createCell(0);
        String formulaText =
            "IF(ROUND(A2*B2*C2,2)>ROUND(B2*D2,2),ROUND(A2*B2*C2,2),ROUND(B2*D2,2))";
        cell.setCellFormula(formulaText);

        assertEquals(formulaText, cell.getCellFormula());
        wb = _testDataProvider.writeOutAndReadBack(wb);
        cell = wb.getSheetAt(0).getRow(0).getCell(0);
        assertEquals("IF(ROUND(A2*B2*C2,2)>ROUND(B2*D2,2),ROUND(A2*B2*C2,2),ROUND(B2*D2,2))", cell.getCellFormula());
    }

    /**
     * Bug 21334: "File error: data may have been lost" with a file
     * that contains macros and this formula:
     * {=SUM(IF(FREQUENCY(IF(LEN(V4:V220)>0,MATCH(V4:V220,V4:V220,0),""),IF(LEN(V4:V220)>0,MATCH(V4:V220,V4:V220,0),""))>0,1))}
     */
    @Test
    public final void bug21334() {
        Workbook wb = _testDataProvider.createWorkbook();
        Sheet sh = wb.createSheet();
        Cell cell = sh.createRow(0).createCell(0);
        String formula = "SUM(IF(FREQUENCY(IF(LEN(V4:V220)>0,MATCH(V4:V220,V4:V220,0),\"\"),IF(LEN(V4:V220)>0,MATCH(V4:V220,V4:V220,0),\"\"))>0,1))";
        cell.setCellFormula(formula);

        Workbook wb_sv = _testDataProvider.writeOutAndReadBack(wb);
        Cell cell_sv = wb_sv.getSheetAt(0).getRow(0).getCell(0);
        assertEquals(formula, cell_sv.getCellFormula());
    }

    /** another test for the number of unique strings issue
     *test opening the resulting file in Excel*/
    @Test
    public final void bug22568() {
        int r=2000;int c=3;

        Workbook wb = _testDataProvider.createWorkbook();
        Sheet sheet = wb.createSheet("ExcelTest") ;

        int col_cnt=0, rw_cnt=0 ;

        col_cnt = c;
        rw_cnt = r;

        Row rw ;
        rw = sheet.createRow(0) ;
        //Header row
        for(int j=0; j<col_cnt; j++){
            Cell cell = rw.createCell(j) ;
            cell.setCellValue("Col " + (j+1));
        }

        for(int i=1; i<rw_cnt; i++){
            rw = sheet.createRow(i) ;
            for(int j=0; j<col_cnt; j++){
                Cell cell = rw.createCell(j) ;
                cell.setCellValue("Row:" + (i+1) + ",Column:" + (j+1));
            }
        }

        sheet.setDefaultColumnWidth(18) ;

        wb = _testDataProvider.writeOutAndReadBack(wb);
        sheet = wb.getSheetAt(0);
        rw = sheet.getRow(0);
        //Header row
        for(int j=0; j<col_cnt; j++){
            Cell cell = rw.getCell(j) ;
            assertEquals("Col " + (j+1), cell.getStringCellValue());
        }
        for(int i=1; i<rw_cnt; i++){
            rw = sheet.getRow(i) ;
            for(int j=0; j<col_cnt; j++){
                Cell cell = rw.getCell(j) ;
                assertEquals("Row:" + (i+1) + ",Column:" + (j+1), cell.getStringCellValue());
            }
        }
    }

    /**
     * Bug 42448: Can't parse SUMPRODUCT(A!C7:A!C67, B8:B68) / B69
     */
    @Test
    public final void bug42448(){
        Workbook wb = _testDataProvider.createWorkbook();
        Cell cell = wb.createSheet().createRow(0).createCell(0);
        cell.setCellFormula("SUMPRODUCT(A!C7:A!C67, B8:B68) / B69");
        assertTrue("no errors parsing formula", true);
    }

    @Test
    public void bug18800() {
       Workbook book = _testDataProvider.createWorkbook();
       book.createSheet("TEST");
       Sheet sheet = book.cloneSheet(0);
       book.setSheetName(1,"CLONE");
       sheet.createRow(0).createCell(0).setCellValue("Test");

       book = _testDataProvider.writeOutAndReadBack(book);
       sheet = book.getSheet("CLONE");
       Row row = sheet.getRow(0);
       Cell cell = row.getCell(0);
       assertEquals("Test", cell.getRichStringCellValue().getString());
   }

    private static void addNewSheetWithCellsA1toD4(Workbook book, int sheet) {

        Sheet sht = book .createSheet("s" + sheet);
        for (int r=0; r < 4; r++) {

            Row   row = sht.createRow (r);
            for (int c=0; c < 4; c++) {

                Cell cel = row.createCell(c);
                cel.setCellValue(sheet*100 + r*10 + c);
            }
        }
    }

    @Test
    public void bug43093() {
        Workbook xlw = _testDataProvider.createWorkbook();

        addNewSheetWithCellsA1toD4(xlw, 1);
        addNewSheetWithCellsA1toD4(xlw, 2);
        addNewSheetWithCellsA1toD4(xlw, 3);
        addNewSheetWithCellsA1toD4(xlw, 4);

        Sheet s2   = xlw.getSheet("s2");
        Row   s2r3 = s2.getRow(3);
        Cell  s2E4 = s2r3.createCell(4);
        s2E4.setCellFormula("SUM(s3!B2:C3)");

        FormulaEvaluator eva = xlw.getCreationHelper().createFormulaEvaluator();
        double d = eva.evaluate(s2E4).getNumberValue();

        assertEquals(d, (311+312+321+322), 0.0000001);
    }

    @Test
    public void bug46729_testMaxFunctionArguments(){
        String[] func = {"COUNT", "AVERAGE", "MAX", "MIN", "OR", "SUBTOTAL", "SKEW"};

        SpreadsheetVersion ssVersion = _testDataProvider.getSpreadsheetVersion();
        Workbook wb = _testDataProvider.createWorkbook();
        Cell cell = wb.createSheet().createRow(0).createCell(0);

        String fmla;
        for (String name : func) {

            fmla = createFunction(name, 5);
            cell.setCellFormula(fmla);

            fmla = createFunction(name, ssVersion.getMaxFunctionArgs());
            cell.setCellFormula(fmla);

            try {
                fmla = createFunction(name, ssVersion.getMaxFunctionArgs() + 1);
                cell.setCellFormula(fmla);
                fail("Expected FormulaParseException");
            } catch (RuntimeException e){
                 assertTrue(e.getMessage().startsWith("Too many arguments to function '"+name+"'"));
            }
        }
    }

    private static String createFunction(String name, int maxArgs){
        StringBuffer fmla = new StringBuffer();
        fmla.append(name);
        fmla.append("(");
        for(int i=0; i < maxArgs; i++){
            if(i > 0) fmla.append(',');
            fmla.append("A1");
        }
        fmla.append(")");
        return fmla.toString();
    }

    @Test
    public final void bug50681_testAutoSize() {
        Workbook wb = _testDataProvider.createWorkbook();
        BaseTestSheetAutosizeColumn.fixFonts(wb);
        Sheet sheet = wb.createSheet("Sheet1");
        Row row = sheet.createRow(0);
        Cell cell0 = row.createCell(0);

        String longValue = "www.hostname.com, www.hostname.com, " +
                "www.hostname.com, www.hostname.com, www.hostname.com, " +
                "www.hostname.com, www.hostname.com, www.hostname.com, " +
                "www.hostname.com, www.hostname.com, www.hostname.com, " +
                "www.hostname.com, www.hostname.com, www.hostname.com, " +
                "www.hostname.com, www.hostname.com, www.hostname.com, www.hostname.com";

        cell0.setCellValue(longValue);

        // autoSize will fail if required fonts are not installed, skip this test then
        Font font = wb.getFontAt(cell0.getCellStyle().getFontIndex());
        Assume.assumeTrue("Cannot verify auoSizeColumn() because the necessary Fonts are not installed on this machine: " + font, 
                SheetUtil.canComputeColumnWidht(font));
        
        assertEquals("Expecting no indentation in this test",
                0, cell0.getCellStyle().getIndention());
        assertEquals("Expecting no rotation in this test", 
                0, cell0.getCellStyle().getRotation());

        // check computing size up to a large size
        StringBuilder b = new StringBuilder();
        for(int i = 0;i < longValue.length()*5;i++) {
            b.append("w");
            assertTrue("Had zero length starting at length " + i, computeCellWidthFixed(font, b.toString()) > 0);
        }
        double widthManual = computeCellWidthManually(cell0, font);
        double widthBeforeCell = SheetUtil.getCellWidth(cell0, 8, null, false);
        double widthBeforeCol = SheetUtil.getColumnWidth(sheet, 0, false);

        assertTrue("Expected to have cell width > 0 when computing manually, but had " + widthManual + "/" + widthBeforeCell + "/" + widthBeforeCol + "/" + 
                SheetUtil.canComputeColumnWidht(font) + "/" + computeCellWidthFixed(font, "1") + "/" + computeCellWidthFixed(font, "0000") + "/" + computeCellWidthFixed(font, longValue), 
                widthManual > 0);
        assertTrue("Expected to have cell width > 0 BEFORE auto-size, but had " + widthManual + "/" + widthBeforeCell + "/" + widthBeforeCol + "/"  + 
                SheetUtil.canComputeColumnWidht(font) + "/" + computeCellWidthFixed(font, "1") + "/" + computeCellWidthFixed(font, "0000") + "/" + computeCellWidthFixed(font, longValue), 
                widthBeforeCell > 0);
        assertTrue("Expected to have column width > 0 BEFORE auto-size, but had " + widthManual + "/" + widthBeforeCell + "/" + widthBeforeCol + "/"  + 
                SheetUtil.canComputeColumnWidht(font) + "/" + computeCellWidthFixed(font, "1") + "/" + computeCellWidthFixed(font, "0000") + "/" + computeCellWidthFixed(font, longValue), 
                widthBeforeCol > 0);

        sheet.autoSizeColumn(0);
        
        double width = SheetUtil.getColumnWidth(sheet, 0, false);
        assertTrue("Expected to have column width > 0 AFTER auto-size, but had " + width, width > 0);
        width = SheetUtil.getCellWidth(cell0, 8, null, false);
        assertTrue("Expected to have cell width > 0 AFTER auto-size, but had " + width, width > 0);
        
        assertEquals(255*256, sheet.getColumnWidth(0)); // maximum column width is 255 characters
        sheet.setColumnWidth(0, sheet.getColumnWidth(0)); // Bug 506819 reports exception at this point
    }

    private double computeCellWidthManually(Cell cell0, Font font) {
        final FontRenderContext fontRenderContext = new FontRenderContext(null, true, true);        
        RichTextString rt = cell0.getRichStringCellValue();
        String[] lines = rt.getString().split("\\n");
        assertEquals(1, lines.length);
        String txt = lines[0] + "0";

        AttributedString str = new AttributedString(txt);
        copyAttributes(font, str, 0, txt.length());

        if (rt.numFormattingRuns() > 0) {
            // TODO: support rich text fragments
        }

        TextLayout layout = new TextLayout(str.getIterator(), fontRenderContext);
        return ((layout.getBounds().getWidth() / 1) / 8);
    }

    private double computeCellWidthFixed(Font font, String txt) {
        final FontRenderContext fontRenderContext = new FontRenderContext(null, true, true);        
        AttributedString str = new AttributedString(txt);
        copyAttributes(font, str, 0, txt.length());

        TextLayout layout = new TextLayout(str.getIterator(), fontRenderContext);
        return layout.getBounds().getWidth();
    }

    private static void copyAttributes(Font font, AttributedString str, int startIdx, int endIdx) {
        str.addAttribute(TextAttribute.FAMILY, font.getFontName(), startIdx, endIdx);
        str.addAttribute(TextAttribute.SIZE, (float)font.getFontHeightInPoints());
        if (font.getBoldweight() == Font.BOLDWEIGHT_BOLD) str.addAttribute(TextAttribute.WEIGHT, TextAttribute.WEIGHT_BOLD, startIdx, endIdx);
        if (font.getItalic() ) str.addAttribute(TextAttribute.POSTURE, TextAttribute.POSTURE_OBLIQUE, startIdx, endIdx);
        if (font.getUnderline() == Font.U_SINGLE ) str.addAttribute(TextAttribute.UNDERLINE, TextAttribute.UNDERLINE_ON, startIdx, endIdx);
    }
    
    /**
     * CreateFreezePane column/row order check
     */
    @Test
    public void bug49381() throws Exception {
       Workbook wb = _testDataProvider.createWorkbook();
       int colSplit = 1;
       int rowSplit = 2;
       int leftmostColumn = 3;
       int topRow = 4;

        Sheet s = wb.createSheet();

        // Populate
        for(int rn=0; rn<= topRow; rn++) {
           Row r = s.createRow(rn);
           for(int cn=0; cn<leftmostColumn; cn++) {
              Cell c = r.createCell(cn, Cell.CELL_TYPE_NUMERIC);
              c.setCellValue(100*rn + cn);
           }
        }

        // Create the Freeze Pane
        s.createFreezePane(colSplit, rowSplit, leftmostColumn, topRow);
        PaneInformation paneInfo = s.getPaneInformation();

        // Check it
        assertEquals(colSplit,       paneInfo.getVerticalSplitPosition());
        assertEquals(rowSplit,       paneInfo.getHorizontalSplitPosition());
        assertEquals(leftmostColumn, paneInfo.getVerticalSplitLeftColumn());
        assertEquals(topRow,         paneInfo.getHorizontalSplitTopRow());


        // Now a row only freezepane
        s.createFreezePane(0, 3);
        paneInfo = s.getPaneInformation();

        assertEquals(0,  paneInfo.getVerticalSplitPosition());
        assertEquals(3,  paneInfo.getHorizontalSplitPosition());
        assertEquals(0,  paneInfo.getVerticalSplitLeftColumn());
        assertEquals(3,  paneInfo.getHorizontalSplitTopRow());

        // Now a column only freezepane
        s.createFreezePane(4, 0);
        paneInfo = s.getPaneInformation();

        assertEquals(4,  paneInfo.getVerticalSplitPosition());
        assertEquals(0,  paneInfo.getHorizontalSplitPosition());
        assertEquals(4 , paneInfo.getVerticalSplitLeftColumn());
        assertEquals(0,  paneInfo.getHorizontalSplitTopRow());
    }

    /** 
     * Test hyperlinks
     * open resulting file in excel, and check that there is a link to Google
     */
    @Test
    public void bug15353() {
        String hyperlinkF = "HYPERLINK(\"http://google.com\",\"Google\")";
        
        Workbook wb = _testDataProvider.createWorkbook();
        Sheet sheet = wb.createSheet("My sheet");

        Row row = sheet.createRow(0);
        Cell cell = row.createCell(0);
        cell.setCellFormula(hyperlinkF);
        
        assertEquals(hyperlinkF, cell.getCellFormula());

        wb = _testDataProvider.writeOutAndReadBack(wb);
        sheet = wb.getSheet("My Sheet");
        row = sheet.getRow(0);
        cell = row.getCell(0);
        
        assertEquals(hyperlinkF, cell.getCellFormula());
    }

    /**
     * HLookup and VLookup with optional arguments 
     */
    @Test
    public void bug51024() throws Exception {
        Workbook wb = _testDataProvider.createWorkbook();
        Sheet s = wb.createSheet();
        Row r1 = s.createRow(0);
        Row r2 = s.createRow(1);

        r1.createCell(0).setCellValue("v A1");
        r2.createCell(0).setCellValue("v A2");
        r1.createCell(1).setCellValue("v B1");

        Cell c = r1.createCell(4);

        FormulaEvaluator eval = wb.getCreationHelper().createFormulaEvaluator();

        c.setCellFormula("VLOOKUP(\"v A1\", A1:B2, 1)");
        assertEquals("v A1", eval.evaluate(c).getStringValue());

        c.setCellFormula("VLOOKUP(\"v A1\", A1:B2, 1, 1)");
        assertEquals("v A1", eval.evaluate(c).getStringValue());

        c.setCellFormula("VLOOKUP(\"v A1\", A1:B2, 1, )");
        assertEquals("v A1", eval.evaluate(c).getStringValue());


        c.setCellFormula("HLOOKUP(\"v A1\", A1:B2, 1)");
        assertEquals("v A1", eval.evaluate(c).getStringValue());

        c.setCellFormula("HLOOKUP(\"v A1\", A1:B2, 1, 1)");
        assertEquals("v A1", eval.evaluate(c).getStringValue());

        c.setCellFormula("HLOOKUP(\"v A1\", A1:B2, 1, )");
        assertEquals("v A1", eval.evaluate(c).getStringValue());
    }
    
    @Test
    public void stackoverflow23114397() throws Exception {
        Workbook wb = _testDataProvider.createWorkbook();
        DataFormat format = wb.getCreationHelper().createDataFormat();
        
        // How close the sizing should be, given that not all
        //  systems will have quite the same fonts on them
        float fontAccuracy = 0.22f;
        
        // x%
        CellStyle iPercent = wb.createCellStyle();
        iPercent.setDataFormat(format.getFormat("0%"));
        // x.x%
        CellStyle d1Percent = wb.createCellStyle();
        d1Percent.setDataFormat(format.getFormat("0.0%"));
        // x.xx%
        CellStyle d2Percent = wb.createCellStyle();
        d2Percent.setDataFormat(format.getFormat("0.00%"));
        
        Sheet s = wb.createSheet();
        Row r1 = s.createRow(0);
        
        for (int i=0; i<3; i++) {
            r1.createCell(i, Cell.CELL_TYPE_NUMERIC).setCellValue(0);
        }
        for (int i=3; i<6; i++) {
            r1.createCell(i, Cell.CELL_TYPE_NUMERIC).setCellValue(1);
        }
        for (int i=6; i<9; i++) {
            r1.createCell(i, Cell.CELL_TYPE_NUMERIC).setCellValue(0.12345);
        }
        for (int i=9; i<12; i++) {
            r1.createCell(i, Cell.CELL_TYPE_NUMERIC).setCellValue(1.2345);
        }
        for (int i=0; i<12; i+=3) {
            r1.getCell(i+0).setCellStyle(iPercent);
            r1.getCell(i+1).setCellStyle(d1Percent);
            r1.getCell(i+2).setCellStyle(d2Percent);
        }
        for (int i=0; i<12; i++) {
            s.autoSizeColumn(i);
        }
        
        // Check the 0(.00)% ones
        assertAlmostEquals(980, s.getColumnWidth(0), fontAccuracy);
        assertAlmostEquals(1400, s.getColumnWidth(1), fontAccuracy);
        assertAlmostEquals(1700, s.getColumnWidth(2), fontAccuracy);
        
        // Check the 100(.00)% ones
        assertAlmostEquals(1500, s.getColumnWidth(3), fontAccuracy);
        assertAlmostEquals(1950, s.getColumnWidth(4), fontAccuracy);
        assertAlmostEquals(2225, s.getColumnWidth(5), fontAccuracy);
        
        // Check the 12(.34)% ones
        assertAlmostEquals(1225, s.getColumnWidth(6), fontAccuracy);
        assertAlmostEquals(1650, s.getColumnWidth(7), fontAccuracy);
        assertAlmostEquals(1950, s.getColumnWidth(8), fontAccuracy);
        
        // Check the 123(.45)% ones
        assertAlmostEquals(1500, s.getColumnWidth(9), fontAccuracy);
        assertAlmostEquals(1950, s.getColumnWidth(10), fontAccuracy);
        assertAlmostEquals(2225, s.getColumnWidth(11), fontAccuracy);
    }

    /**
     * =ISNUMBER(SEARCH("AM",A1)) evaluation 
     */
    @Test
    public void stackoverflow26437323() throws Exception {
        Workbook wb = _testDataProvider.createWorkbook();
        Sheet s = wb.createSheet();
        Row r1 = s.createRow(0);
        Row r2 = s.createRow(1);
        
        // A1 is a number
        r1.createCell(0).setCellValue(1.1);
        // B1 is a string, with the wanted text in it
        r1.createCell(1).setCellValue("This is text with AM in it");
        // C1 is a string, with different text
        r1.createCell(2).setCellValue("This some other text");
        // D1 is a blank cell
        r1.createCell(3, Cell.CELL_TYPE_BLANK);
        // E1 is null
        
        // A2 will hold our test formulas
        Cell cf = r2.createCell(0, Cell.CELL_TYPE_FORMULA);
        
        
        // First up, check that TRUE and ISLOGICAL both behave
        cf.setCellFormula("TRUE()");
        cf = evaluateCell(wb, cf);
        assertEquals(true, cf.getBooleanCellValue());
        
        cf.setCellFormula("ISLOGICAL(TRUE())");
        cf = evaluateCell(wb, cf);
        assertEquals(true, cf.getBooleanCellValue());
        
        cf.setCellFormula("ISLOGICAL(4)");
        cf = evaluateCell(wb, cf);
        assertEquals(false, cf.getBooleanCellValue());
        
        
        // Now, check ISNUMBER / ISTEXT / ISNONTEXT
        cf.setCellFormula("ISNUMBER(A1)");
        cf = evaluateCell(wb, cf);
        assertEquals(true, cf.getBooleanCellValue());
        
        cf.setCellFormula("ISNUMBER(B1)");
        cf = evaluateCell(wb, cf);
        assertEquals(false, cf.getBooleanCellValue());
        
        cf.setCellFormula("ISNUMBER(C1)");
        cf = evaluateCell(wb, cf);
        assertEquals(false, cf.getBooleanCellValue());
        
        cf.setCellFormula("ISNUMBER(D1)");
        cf = evaluateCell(wb, cf);
        assertEquals(false, cf.getBooleanCellValue());
        
        cf.setCellFormula("ISNUMBER(E1)");
        cf = evaluateCell(wb, cf);
        assertEquals(false, cf.getBooleanCellValue());

        
        cf.setCellFormula("ISTEXT(A1)");
        cf = evaluateCell(wb, cf);
        assertEquals(false, cf.getBooleanCellValue());
        
        cf.setCellFormula("ISTEXT(B1)");
        cf = evaluateCell(wb, cf);
        assertEquals(true, cf.getBooleanCellValue());
        
        cf.setCellFormula("ISTEXT(C1)");
        cf = evaluateCell(wb, cf);
        assertEquals(true, cf.getBooleanCellValue());
        
        cf.setCellFormula("ISTEXT(D1)");
        cf = evaluateCell(wb, cf);
        assertEquals(false, cf.getBooleanCellValue());
        
        cf.setCellFormula("ISTEXT(E1)");
        cf = evaluateCell(wb, cf);
        assertEquals(false, cf.getBooleanCellValue());

        
        cf.setCellFormula("ISNONTEXT(A1)");
        cf = evaluateCell(wb, cf);
        assertEquals(true, cf.getBooleanCellValue());
        
        cf.setCellFormula("ISNONTEXT(B1)");
        cf = evaluateCell(wb, cf);
        assertEquals(false, cf.getBooleanCellValue());
        
        cf.setCellFormula("ISNONTEXT(C1)");
        cf = evaluateCell(wb, cf);
        assertEquals(false, cf.getBooleanCellValue());
        
        cf.setCellFormula("ISNONTEXT(D1)");
        cf = evaluateCell(wb, cf);
        assertEquals(true, cf.getBooleanCellValue());
        
        cf.setCellFormula("ISNONTEXT(E1)");
        cf = evaluateCell(wb, cf);
        assertEquals(true, cf.getBooleanCellValue()); // Blank and Null the same

        
        // Next up, SEARCH on its own
        cf.setCellFormula("SEARCH(\"am\", A1)");
        cf = evaluateCell(wb, cf);
        assertEquals(FormulaError.VALUE.getCode(), cf.getErrorCellValue());
        
        cf.setCellFormula("SEARCH(\"am\", B1)");
        cf = evaluateCell(wb, cf);
        assertEquals(19, (int)cf.getNumericCellValue());
        
        cf.setCellFormula("SEARCH(\"am\", C1)");
        cf = evaluateCell(wb, cf);
        assertEquals(FormulaError.VALUE.getCode(), cf.getErrorCellValue());
        
        cf.setCellFormula("SEARCH(\"am\", D1)");
        cf = evaluateCell(wb, cf);
        assertEquals(FormulaError.VALUE.getCode(), cf.getErrorCellValue());
        
        
        // Finally, bring it all together
        cf.setCellFormula("ISNUMBER(SEARCH(\"am\", A1))");
        cf = evaluateCell(wb, cf);
        assertEquals(false, cf.getBooleanCellValue());
        
        cf.setCellFormula("ISNUMBER(SEARCH(\"am\", B1))");
        cf = evaluateCell(wb, cf);
        assertEquals(true, cf.getBooleanCellValue());
        
        cf.setCellFormula("ISNUMBER(SEARCH(\"am\", C1))");
        cf = evaluateCell(wb, cf);
        assertEquals(false, cf.getBooleanCellValue());
        
        cf.setCellFormula("ISNUMBER(SEARCH(\"am\", D1))");
        cf = evaluateCell(wb, cf);
        assertEquals(false, cf.getBooleanCellValue());
        
        cf.setCellFormula("ISNUMBER(SEARCH(\"am\", E1))");
        cf = evaluateCell(wb, cf);
        assertEquals(false, cf.getBooleanCellValue());        
    }
    private Cell evaluateCell(Workbook wb, Cell c) {
        Sheet s = c.getSheet();
        wb.getCreationHelper().createFormulaEvaluator().evaluateFormulaCell(c);
        return s.getRow(c.getRowIndex()).getCell(c.getColumnIndex());
    }
    
    /**
     * Should be able to write then read formulas with references
     *  to cells in other files, eg '[refs/airport.xls]Sheet1'!$A$2
     *  or 'http://192.168.1.2/[blank.xls]Sheet1'!$A$1 .
     * Additionally, if a reference to that file is provided, it should
     *  be possible to evaluate them too
     * TODO Fix this to evaluate for XSSF
     * TODO Fix this to work at all for HSSF
     */
    @Ignore("Fix this to evaluate for XSSF, Fix this to work at all for HSSF")
    @Test
    public void bug46670() throws Exception {
        Workbook wb = _testDataProvider.createWorkbook();
        Sheet s = wb.createSheet();
        Row r1 = s.createRow(0);
        
        
        // References to try
        String ext = "xls";
        if (! (wb instanceof HSSFWorkbook)) ext += "x";
        String refLocal = "'[test."+ext+"]Sheet1'!$A$2";
        String refHttp  = "'[http://example.com/test."+ext+"]Sheet1'!$A$2";
        String otherCellText = "In Another Workbook";

        
        // Create the references
        Cell c1 = r1.createCell(0, Cell.CELL_TYPE_FORMULA);
        c1.setCellFormula(refLocal);
        
        Cell c2 = r1.createCell(1, Cell.CELL_TYPE_FORMULA);
        c2.setCellFormula(refHttp);
        
        
        // Check they were set correctly
        assertEquals(refLocal, c1.getCellFormula());
        assertEquals(refHttp,  c2.getCellFormula());
        
        
        // Reload, and ensure they were serialised and read correctly
        wb = _testDataProvider.writeOutAndReadBack(wb);
        s = wb.getSheetAt(0);
        r1 = s.getRow(0);
        
        c1 = r1.getCell(0);
        c2 = r1.getCell(1);
        assertEquals(refLocal, c1.getCellFormula());
        assertEquals(refHttp,  c2.getCellFormula());

        
        // Try to evaluate, without giving a way to get at the other file
        try {
            evaluateCell(wb, c1);
            fail("Shouldn't be able to evaluate without the other file");
        } catch (Exception e) {}
        try {
            evaluateCell(wb, c2);
            fail("Shouldn't be able to evaluate without the other file");
        } catch (Exception e) {}
        
        
        // Set up references to the other file
        Workbook wb2 = _testDataProvider.createWorkbook();
        wb2.createSheet().createRow(1).createCell(0).setCellValue(otherCellText);
        
        Map<String,FormulaEvaluator> evaluators = new HashMap<String, FormulaEvaluator>();
        evaluators.put(refLocal, wb2.getCreationHelper().createFormulaEvaluator());
        evaluators.put(refHttp,  wb2.getCreationHelper().createFormulaEvaluator());
        
        FormulaEvaluator evaluator = wb.getCreationHelper().createFormulaEvaluator();
        evaluator.setupReferencedWorkbooks(evaluators);
        
        
        // Try to evaluate, with the other file
        evaluator.evaluateFormulaCell(c1);
        evaluator.evaluateFormulaCell(c2);
        
        assertEquals(otherCellText, c1.getStringCellValue());
        assertEquals(otherCellText, c2.getStringCellValue());
    }

    @Test
    public void test56574OverwriteExistingRow() throws IOException {
        Workbook wb = _testDataProvider.createWorkbook();
        Sheet sheet = wb.createSheet();
        
        { // create the Formula-Cell
            Row row = sheet.createRow(0);
            Cell cell = row.createCell(0);
            cell.setCellFormula("A2");
        }
        
        { // check that it is there now
            Row row = sheet.getRow(0);
            
           /* CTCell[] cArray = ((XSSFRow)row).getCTRow().getCArray();
            assertEquals(1, cArray.length);*/

            Cell cell = row.getCell(0);
            assertEquals(Cell.CELL_TYPE_FORMULA, cell.getCellType());
        }
        
        { // overwrite the row
            Row row = sheet.createRow(0);
            assertNotNull(row);
        }
        
        { // creating a row in place of another should remove the existing data,
            // check that the cell is gone now
            Row row = sheet.getRow(0);
            
            /*CTCell[] cArray = ((XSSFRow)row).getCTRow().getCArray();
            assertEquals(0, cArray.length);*/

            Cell cell = row.getCell(0);
            assertNull(cell);
        }
        
        // the calculation chain in XSSF is empty in a newly created workbook, so we cannot check if it is correctly updated
        /*assertNull(((XSSFWorkbook)wb).getCalculationChain());
        assertNotNull(((XSSFWorkbook)wb).getCalculationChain().getCTCalcChain());
        assertNotNull(((XSSFWorkbook)wb).getCalculationChain().getCTCalcChain().getCArray());
        assertEquals(0, ((XSSFWorkbook)wb).getCalculationChain().getCTCalcChain().getCArray().length);*/

        wb.close();
    }

    /**
     * With HSSF, if you create a font, don't change it, and
     *  create a 2nd, you really do get two fonts that you 
     *  can alter as and when you want.
     * With XSSF, that wasn't the case, but this verfies
     *  that it now is again
     */
    @Test
    public void bug48718() throws Exception {
        Workbook wb = _testDataProvider.createWorkbook();
        int startingFonts = wb instanceof HSSFWorkbook ? 4 : 1;

        assertEquals(startingFonts, wb.getNumberOfFonts());

        // Get a font, and slightly change it
        Font a = wb.createFont();
        assertEquals(startingFonts+1, wb.getNumberOfFonts());
        a.setFontHeightInPoints((short)23);
        assertEquals(startingFonts+1, wb.getNumberOfFonts());

        // Get two more, unchanged
        /*Font b =*/ wb.createFont();
        assertEquals(startingFonts+2, wb.getNumberOfFonts());
        /*Font c =*/ wb.createFont();
        assertEquals(startingFonts+3, wb.getNumberOfFonts());
    }

    @Test
    public void bug57430() throws Exception {
        Workbook wb = _testDataProvider.createWorkbook();
        try {
            wb.createSheet("Sheet1");

            Name name1 = wb.createName();
            name1.setNameName("FMLA");
            name1.setRefersToFormula("Sheet1!$B$3");
        } finally {
            wb.close();
        }
    }

    @Test
    public void bug56981() throws IOException {
        Workbook wb = _testDataProvider.createWorkbook();
        CellStyle vertTop = wb.createCellStyle();
        vertTop.setVerticalAlignment(CellStyle.VERTICAL_TOP);
        CellStyle vertBottom = wb.createCellStyle();
        vertBottom.setVerticalAlignment(CellStyle.VERTICAL_BOTTOM);
        Sheet sheet = wb.createSheet("Sheet 1");
        Row row = sheet.createRow(0);
        Cell top = row.createCell(0);
        Cell bottom = row.createCell(1);
        top.setCellValue("Top");
        top.setCellStyle(vertTop); // comment this out to get all bottom-aligned
                                   // cells
        bottom.setCellValue("Bottom");
        bottom.setCellStyle(vertBottom);
        row.setHeightInPoints(85.75f); // make it obvious

        /*FileOutputStream out = new FileOutputStream("c:\\temp\\56981.xlsx");
        try {
            wb.write(out);
        } finally {
            out.close();
        }*/
        
        wb.close();
    }

    @Test
    public void test57973() throws IOException {
        Workbook wb = _testDataProvider.createWorkbook();

        CreationHelper factory = wb.getCreationHelper();

        Sheet sheet = wb.createSheet();
        Drawing drawing = sheet.createDrawingPatriarch();
        ClientAnchor anchor = factory.createClientAnchor();
        
        Cell cell0 = sheet.createRow(0).createCell(0);
        cell0.setCellValue("Cell0");

        Comment comment0 = drawing.createCellComment(anchor);
        RichTextString str0 = factory.createRichTextString("Hello, World1!");
        comment0.setString(str0);
        comment0.setAuthor("Apache POI");
        cell0.setCellComment(comment0);
        
        anchor = factory.createClientAnchor();
        anchor.setCol1(1);
        anchor.setCol2(1);
        anchor.setRow1(1);
        anchor.setRow2(1);
        Cell cell1 = sheet.createRow(3).createCell(5);
        cell1.setCellValue("F4");
        Comment comment1 = drawing.createCellComment(anchor);
        RichTextString str1 = factory.createRichTextString("Hello, World2!");
        comment1.setString(str1);
        comment1.setAuthor("Apache POI");
        cell1.setCellComment(comment1);

        Cell cell2 = sheet.createRow(2).createCell(2);
        cell2.setCellValue("C3");

        anchor = factory.createClientAnchor();
        anchor.setCol1(2);
        anchor.setCol2(2);
        anchor.setRow1(2);
        anchor.setRow2(2);

        Comment comment2 = drawing.createCellComment(anchor);
        RichTextString str2 = factory.createRichTextString("XSSF can set cell comments");
        //apply custom font to the text in the comment
        Font font = wb.createFont();
        font.setFontName("Arial");
        font.setFontHeightInPoints((short)14);
        font.setBoldweight(Font.BOLDWEIGHT_BOLD);
        font.setColor(IndexedColors.RED.getIndex());
        str2.applyFont(font);

        comment2.setString(str2);
        comment2.setAuthor("Apache POI");
        comment2.setColumn(2);
        comment2.setRow(2);

        /*OutputStream out = new FileOutputStream("C:\\temp\\57973.xlsx");
        try {
            wb.write(out);
        } finally {
            out.close();
        }*/
        
        wb.close();
    }

    /**
     * Ensures that XSSF and HSSF agree with each other,
     *  and with the docs on when fetching the wrong
     *  kind of value from a Formula cell
     */
    @Test
    public void bug47815() {
        Workbook wb = _testDataProvider.createWorkbook();
        Sheet s = wb.createSheet();
        Row r = s.createRow(0);

        // Setup
        Cell cn = r.createCell(0, Cell.CELL_TYPE_NUMERIC);
        cn.setCellValue(1.2);
        Cell cs = r.createCell(1, Cell.CELL_TYPE_STRING);
        cs.setCellValue("Testing");

        Cell cfn = r.createCell(2, Cell.CELL_TYPE_FORMULA);
        cfn.setCellFormula("A1");  
        Cell cfs = r.createCell(3, Cell.CELL_TYPE_FORMULA);
        cfs.setCellFormula("B1");

        FormulaEvaluator fe = wb.getCreationHelper().createFormulaEvaluator();
        assertEquals(Cell.CELL_TYPE_NUMERIC, fe.evaluate(cfn).getCellType());
        assertEquals(Cell.CELL_TYPE_STRING, fe.evaluate(cfs).getCellType());
        fe.evaluateFormulaCell(cfn);
        fe.evaluateFormulaCell(cfs);

        // Now test
        assertEquals(Cell.CELL_TYPE_NUMERIC, cn.getCellType());
        assertEquals(Cell.CELL_TYPE_STRING, cs.getCellType());
        assertEquals(Cell.CELL_TYPE_FORMULA, cfn.getCellType());
        assertEquals(Cell.CELL_TYPE_NUMERIC, cfn.getCachedFormulaResultType());
        assertEquals(Cell.CELL_TYPE_FORMULA, cfs.getCellType());
        assertEquals(Cell.CELL_TYPE_STRING, cfs.getCachedFormulaResultType());

        // Different ways of retrieving
        assertEquals(1.2, cn.getNumericCellValue(), 0);
        try {
            cn.getRichStringCellValue();
            fail();
        } catch(IllegalStateException e) {}

        assertEquals("Testing", cs.getStringCellValue());
        try {
            cs.getNumericCellValue();
            fail();
        } catch(IllegalStateException e) {}

        assertEquals(1.2, cfn.getNumericCellValue(), 0);
        try {
            cfn.getRichStringCellValue();
            fail();
        } catch(IllegalStateException e) {}

        assertEquals("Testing", cfs.getStringCellValue());
        try {
            cfs.getNumericCellValue();
            fail();
        } catch(IllegalStateException e) {}
    }
    
    @Test
    public void test58113() {
        Workbook wb = _testDataProvider.createWorkbook();
        Sheet sheet = wb.createSheet( "Test" );

        Row row = sheet.createRow(0);

        Cell cell = row.createCell(0);
        // verify that null-values can be set, this was possible up to 3.11, but broken in 3.12 
        cell.setCellValue((String)null);
        String value = cell.getStringCellValue();
        assertTrue("HSSF will currently return empty string, XSSF/SXSSF will return null, but had: " + value,
                value == null || value.length() == 0);
        
        cell = row.createCell(1);
        // also verify that setting formulas to null works  
        cell.setCellType(Cell.CELL_TYPE_FORMULA);
        cell.setCellValue((String)null);
        
        wb.getCreationHelper().createFormulaEvaluator().evaluateAll();

        value = cell.getStringCellValue();
        assertTrue("HSSF will currently return empty string, XSSF/SXSSF will return null, but had: " + value,
                value == null || value.length() == 0);
        
        // set some value
        cell.setCellType(Cell.CELL_TYPE_STRING);
        cell.setCellValue("somevalue");

        value = cell.getStringCellValue();
        assertTrue("can set value afterwards: " + value,
                value.equals("somevalue"));

        // verify that the null-value is actually set even if there was some value in the cell before  
        cell.setCellValue((String)null);
        value = cell.getStringCellValue();
        assertTrue("HSSF will currently return empty string, XSSF/SXSSF will return null, but had: " + value,
                value == null || value.length() == 0);
    }
}