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Patch from Conor from bug #57747 - Add ISERR() function 

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1675741 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Nick Burch 2015-04-24 01:47:20 +00:00
parent 7393e160ba
commit 691338a8d1
3 changed files with 110 additions and 0 deletions
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1
src/java/org/apache/poi/ss/formula/eval/FunctionEval.java
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@ -154,6 +154,7 @@ public final class FunctionEval {
retval[124] = TextFunction.FIND;
retval[126] = LogicalFunction.ISERR;
retval[127] = LogicalFunction.ISTEXT;
retval[128] = LogicalFunction.ISNUMBER;
retval[129] = LogicalFunction.ISBLANK;

21
src/java/org/apache/poi/ss/formula/functions/LogicalFunction.java
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@ -90,6 +90,27 @@ public abstract class LogicalFunction extends Fixed1ArgFunction {
}
};
/**
* Implementation of Excel <tt>ISERR()</tt> function.<p/>
*
* <b>Syntax</b>:<br/>
* <b>ISERR</b>(<b>value</b>)<p/>
*
* <b>value</b> The value to be tested<p/>
*
* Returns the logical value <tt>TRUE</tt> if value refers to any error value except
* <tt>'#N/A'</tt>; otherwise, it returns <tt>FALSE</tt>.
*/
public static final Function ISERR = new LogicalFunction() {
@Override
protected boolean evaluate(ValueEval arg) {
if (arg instanceof ErrorEval) {
return arg != ErrorEval.NA;
}
return false;
}
};
/**
* Implementation for Excel ISNA() function.<p/>
*

88
src/testcases/org/apache/poi/ss/formula/functions/TestLogicalFunction.java Normal file
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@ -0,0 +1,88 @@
package org.apache.poi.ss.formula.functions;
import java.io.IOException;
import junit.framework.TestCase;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellValue;
import org.apache.poi.ss.usermodel.FormulaEvaluator;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.util.CellReference;
/**
* LogicalFunction unit tests.
*/
public class TestLogicalFunction extends TestCase {
private FormulaEvaluator evaluator;
private Row row3;
private Cell cell1;
private Cell cell2;
@Override
public void setUp() throws IOException {
Workbook wb = new HSSFWorkbook();
try {
buildWorkbook(wb);
} finally {
wb.close();
}
}
private void buildWorkbook(Workbook wb) {
Sheet sh = wb.createSheet();
Row row1 = sh.createRow(0);
Row row2 = sh.createRow(1);
row3 = sh.createRow(2);
row1.createCell(0, Cell.CELL_TYPE_NUMERIC);
row1.createCell(1, Cell.CELL_TYPE_NUMERIC);
row2.createCell(0, Cell.CELL_TYPE_NUMERIC);
row2.createCell(1, Cell.CELL_TYPE_NUMERIC);
row3.createCell(0);
row3.createCell(1);
CellReference a1 = new CellReference("A1");
CellReference a2 = new CellReference("A2");
CellReference b1 = new CellReference("B1");
CellReference b2 = new CellReference("B2");
sh.getRow(a1.getRow()).getCell(a1.getCol()).setCellValue(35);
sh.getRow(a2.getRow()).getCell(a2.getCol()).setCellValue(0);
sh.getRow(b1.getRow()).getCell(b1.getCol()).setCellFormula("A1/A2");
sh.getRow(b2.getRow()).getCell(b2.getCol()).setCellFormula("NA()");
evaluator = wb.getCreationHelper().createFormulaEvaluator();
}
public void testIsErr() {
cell1 = row3.createCell(0);
cell1.setCellFormula("ISERR(B1)"); // produces #DIV/0!
cell2 = row3.createCell(1);
cell2.setCellFormula("ISERR(B2)"); // produces #N/A
CellValue cell1Value = evaluator.evaluate(cell1);
CellValue cell2Value = evaluator.evaluate(cell2);
assertEquals(true, cell1Value.getBooleanValue());
assertEquals(false, cell2Value.getBooleanValue());
}
public void testIsError() {
cell1 = row3.createCell(0);
cell1.setCellFormula("ISERROR(B1)"); // produces #DIV/0!
cell2 = row3.createCell(1);
cell2.setCellFormula("ISERROR(B2)"); // produces #N/A
CellValue cell1Value = evaluator.evaluate(cell1);
CellValue cell2Value = evaluator.evaluate(cell2);
assertEquals(true, cell1Value.getBooleanValue());
assertEquals(true, cell2Value.getBooleanValue());
}
}