poi/src/testcases/org/apache/poi/hssf/record/formula/TestReferencePtg.java

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   this work for additional information regarding copyright ownership.
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package org.apache.poi.hssf.record.formula;

import java.util.Arrays;

import junit.framework.AssertionFailedError;
import junit.framework.TestCase;

import org.apache.poi.hssf.HSSFTestDataSamples;
import org.apache.poi.hssf.record.TestcaseRecordInputStream;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.util.LittleEndianInput;

/**
 * Tests for {@link RefPtg}.
 */
public final class TestReferencePtg extends TestCase {
    /**
     * Tests reading a file containing this ptg.
     */
    public void testReading() {
        HSSFWorkbook workbook = HSSFTestDataSamples.openSampleWorkbook("ReferencePtg.xls");
        HSSFSheet sheet = workbook.getSheetAt(0);

        // First row
        assertEquals("Wrong numeric value for original number", 55.0,
                     sheet.getRow(0).getCell(0).getNumericCellValue(), 0.0);
        assertEquals("Wrong numeric value for referemce", 55.0,
                     sheet.getRow(0).getCell(1).getNumericCellValue(), 0.0);
        assertEquals("Wrong formula string for reference", "A1",
                     sheet.getRow(0).getCell(1).getCellFormula());
        
        // Now moving over the 2**15 boundary
        // (Remember that excel row (n) is poi row (n-1)
        assertEquals("Wrong numeric value for original number", 32767.0,
                sheet.getRow(32766).getCell(0).getNumericCellValue(), 0.0);
        assertEquals("Wrong numeric value for referemce", 32767.0,
                sheet.getRow(32766).getCell(1).getNumericCellValue(), 0.0);
        assertEquals("Wrong formula string for reference", "A32767",
                sheet.getRow(32766).getCell(1).getCellFormula());
        
        assertEquals("Wrong numeric value for original number", 32768.0,
                sheet.getRow(32767).getCell(0).getNumericCellValue(), 0.0);
        assertEquals("Wrong numeric value for referemce", 32768.0,
                sheet.getRow(32767).getCell(1).getNumericCellValue(), 0.0);
        assertEquals("Wrong formula string for reference", "A32768",
                sheet.getRow(32767).getCell(1).getCellFormula());
        
        assertEquals("Wrong numeric value for original number", 32769.0,
                sheet.getRow(32768).getCell(0).getNumericCellValue(), 0.0);
        assertEquals("Wrong numeric value for referemce", 32769.0,
                sheet.getRow(32768).getCell(1).getNumericCellValue(), 0.0);
        assertEquals("Wrong formula string for reference", "A32769",
                sheet.getRow(32768).getCell(1).getCellFormula());
        
        assertEquals("Wrong numeric value for original number", 32770.0,
                sheet.getRow(32769).getCell(0).getNumericCellValue(), 0.0);
        assertEquals("Wrong numeric value for referemce", 32770.0,
                sheet.getRow(32769).getCell(1).getNumericCellValue(), 0.0);
        assertEquals("Wrong formula string for reference", "A32770",
                sheet.getRow(32769).getCell(1).getCellFormula());
    }
    
    public void testBug44921() {
        HSSFWorkbook wb = HSSFTestDataSamples.openSampleWorkbook("ex44921-21902.xls");
        
        try {
            HSSFTestDataSamples.writeOutAndReadBack(wb);
        } catch (RuntimeException e) {
            if(e.getMessage().equals("Coding Error: This method should never be called. This ptg should be converted")) {
                throw new AssertionFailedError("Identified bug 44921");
            }
            throw e;
        }
    }
    private static final byte[] tRefN_data = {
    	0x2C, 33, 44, 55, 66,
    };
    public void testReadWrite_tRefN_bug45091() {
    	LittleEndianInput in = TestcaseRecordInputStream.createLittleEndian(tRefN_data);
        Ptg[] ptgs = Ptg.readTokens(tRefN_data.length, in);
        byte[] outData = new byte[5];
        Ptg.serializePtgs(ptgs, outData, 0);
        if (outData[0] == 0x24) {
            throw new AssertionFailedError("Identified bug 45091");
        }
        assertTrue(Arrays.equals(tRefN_data, outData));
    }

    /**
     * test that RefPtgBase can handle references with column index greater than 255,
     * see Bugzilla 50096
     */
    public void testColumnGreater255() {
        RefPtgBase ptg;
        ptg = new RefPtg("IW1");
        assertEquals(256, ptg.getColumn());
        assertEquals("IW1", ptg.formatReferenceAsString());

        ptg = new RefPtg("JA1");
        assertEquals(260, ptg.getColumn());
        assertEquals("JA1", ptg.formatReferenceAsString());
    }
}