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this work for additional information regarding copyright ownership.
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package org.apache.poi.hssf.record.formula.functions;
import junit.framework.TestCase;
import org.apache.poi.hssf.record.formula.eval.NumberEval;
import org.apache.poi.hssf.record.formula.eval.ValueEval;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFErrorConstants;
import org.apache.poi.hssf.usermodel.HSSFFormulaEvaluator;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
/**
* Tests for {@link FinanceFunction#NPER}
*
* @author Josh Micich
*/
public final class TestNper extends TestCase {
public void testSimpleEvaluate() {
ValueEval[] args = {
new NumberEval(0.05),
new NumberEval(250),
new NumberEval(-1000),
};
ValueEval result = FinanceFunction.NPER.evaluate(args, 0, (short)0);
assertEquals(NumberEval.class, result.getClass());
assertEquals(4.57353557, ((NumberEval)result).getNumberValue(), 0.00000001);
}
public void testEvaluate_bug_45732() {
HSSFWorkbook wb = new HSSFWorkbook();
HSSFSheet sheet = wb.createSheet("Sheet1");
HSSFCell cell = sheet.createRow(0).createCell(0);
cell.setCellFormula("NPER(12,4500,100000,100000)");
cell.setCellValue(15.0);
assertEquals("NPER(12,4500,100000,100000)", cell.getCellFormula());
assertEquals(HSSFCell.CELL_TYPE_NUMERIC, cell.getCachedFormulaResultType());
assertEquals(15.0, cell.getNumericCellValue(), 0.0);
HSSFFormulaEvaluator fe = new HSSFFormulaEvaluator(wb);
fe.evaluateFormulaCell(cell);
assertEquals(HSSFCell.CELL_TYPE_ERROR, cell.getCachedFormulaResultType());
assertEquals(HSSFErrorConstants.ERROR_NUM, cell.getErrorCellValue());
}
}