poi/src/testcases/org/apache/poi/hssf/usermodel/TestBug42464.java

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   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
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       http://www.apache.org/licenses/LICENSE-2.0

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   distributed under the License is distributed on an "AS IS" BASIS,
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package org.apache.poi.hssf.usermodel;

import java.util.Iterator;

import junit.framework.TestCase;

import org.apache.poi.hssf.HSSFTestDataSamples;
import org.apache.poi.hssf.record.FormulaRecord;
import org.apache.poi.hssf.record.aggregates.FormulaRecordAggregate;
import org.apache.poi.hssf.record.formula.Ptg;
import org.apache.poi.hssf.util.CellReference;
import org.apache.poi.ss.usermodel.CellValue;

/**
 *
 */
public final class TestBug42464 extends TestCase {

	public void testOKFile() {
		HSSFWorkbook wb = HSSFTestDataSamples.openSampleWorkbook("42464-ExpPtg-ok.xls");
		process(wb);
	}
	public void testExpSharedBadFile() {
		HSSFWorkbook wb = HSSFTestDataSamples.openSampleWorkbook("42464-ExpPtg-bad.xls");
		process(wb);
	}

	private static void process(HSSFWorkbook wb) {
		HSSFFormulaEvaluator eval =	new HSSFFormulaEvaluator(wb);
		for(int i=0; i<wb.getNumberOfSheets(); i++) {
			HSSFSheet s = wb.getSheetAt(i);

			Iterator it = s.rowIterator();
			while(it.hasNext()) {
				HSSFRow r = (HSSFRow)it.next();
				process(r, eval);
			}
		}
	}

	private static void process(HSSFRow row, HSSFFormulaEvaluator eval) {
		Iterator it = row.cellIterator();
		while(it.hasNext()) {
			HSSFCell cell = (HSSFCell)it.next();
			if(cell.getCellType() != HSSFCell.CELL_TYPE_FORMULA) {
			    continue;
			}
			FormulaRecordAggregate record = (FormulaRecordAggregate) cell.getCellValueRecord();
			FormulaRecord r = record.getFormulaRecord();
			Ptg[] ptgs = r.getParsedExpression();

			String cellRef = new CellReference(row.getRowNum(), cell.getColumnIndex(), false, false).formatAsString();
			if(false && cellRef.equals("BP24")) { // TODO - replace System.out.println()s with asserts
				System.out.print(cellRef);
				System.out.println(" - has " + ptgs.length + " ptgs:");
				for(int i=0; i<ptgs.length; i++) {
					String c = ptgs[i].getClass().toString();
					System.out.println("\t" + c.substring(c.lastIndexOf('.')+1) );
				}
				System.out.println("-> " + cell.getCellFormula());
			}

			CellValue evalResult = eval.evaluate(cell);
			assertNotNull(evalResult);
		}
	}
}