src/scratchpad/testcases/org/apache/poi/hssf/usermodel/TestBug44297.java

package org.apache.poi.hssf.usermodel;
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import junit.framework.TestCase;

import java.io.IOException;
import java.io.FileInputStream;
import java.io.File;

/**
 * Bug 44297: 32767+32768 is evaluated to -1
 * Fix: IntPtg must operate with unsigned short. Reading signed short results in incorrect formula calculation
 * if a formula has values in the interval [Short.MAX_VALUE, (Short.MAX_VALUE+1)*2]
 *
 * @author Yegor Kozlov
 */

public class TestBug44297 extends TestCase {
    protected String cwd = System.getProperty("HSSF.testdata.path");

    public void test44297() throws IOException {
        FileInputStream in = new FileInputStream(new File(cwd, "44297.xls"));
        HSSFWorkbook wb = new HSSFWorkbook(in);
        in.close();

        HSSFRow row;
        HSSFCell  cell;

        HSSFSheet sheet   = wb.getSheetAt(0);

        HSSFFormulaEvaluator eva = new HSSFFormulaEvaluator(sheet, wb);

        row = (HSSFRow)sheet.getRow(0);
        cell = row.getCell((short)0);
        assertEquals("31+46", cell.getCellFormula());
        eva.setCurrentRow(row);
        assertEquals(77, eva.evaluate(cell).getNumberValue(), 0);

        row = (HSSFRow)sheet.getRow(1);
        cell = row.getCell((short)0);
        assertEquals("30+53", cell.getCellFormula());
        eva.setCurrentRow(row);
        assertEquals(83, eva.evaluate(cell).getNumberValue(), 0);

        row = (HSSFRow)sheet.getRow(2);
        cell = row.getCell((short)0);
        assertEquals("SUM(A1:A2)", cell.getCellFormula());
        eva.setCurrentRow(row);
        assertEquals(160, eva.evaluate(cell).getNumberValue(), 0);

        row = (HSSFRow)sheet.getRow(4);
        cell = row.getCell((short)0);
        assertEquals("32767+32768", cell.getCellFormula());
        eva.setCurrentRow(row);
        assertEquals(65535, eva.evaluate(cell).getNumberValue(), 0);

        row = (HSSFRow)sheet.getRow(7);
        cell = row.getCell((short)0);
        assertEquals("32744+42333", cell.getCellFormula());
        eva.setCurrentRow(row);
        assertEquals(75077, eva.evaluate(cell).getNumberValue(), 0);

        row = (HSSFRow)sheet.getRow(8);
        cell = row.getCell((short)0);
        assertEquals("327680.0/32768", cell.getCellFormula());
        eva.setCurrentRow(row);
        assertEquals(10, eva.evaluate(cell).getNumberValue(), 0);

        row = (HSSFRow)sheet.getRow(9);
        cell = row.getCell((short)0);
        assertEquals("32767+32769", cell.getCellFormula());
        eva.setCurrentRow(row);
        assertEquals(65536, eva.evaluate(cell).getNumberValue(), 0);

        row = (HSSFRow)sheet.getRow(10);
        cell = row.getCell((short)0);
        assertEquals("35000+36000", cell.getCellFormula());
        eva.setCurrentRow(row);
        assertEquals(71000, eva.evaluate(cell).getNumberValue(), 0);

        row = (HSSFRow)sheet.getRow(11);
        cell = row.getCell((short)0);
        assertEquals("-1000000.0-3000000.0", cell.getCellFormula());
        eva.setCurrentRow(row);
        assertEquals(-4000000, eva.evaluate(cell).getNumberValue(), 0);
    }

}