TestHSSFFormulaEvaluator.java
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package org.apache.poi.hssf.usermodel;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotEquals;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.fail;
import java.io.IOException;
import org.apache.poi.hssf.HSSFITestDataProvider;
import org.apache.poi.hssf.HSSFTestDataSamples;
import org.apache.poi.hssf.record.NameRecord;
import org.apache.poi.ss.formula.EvaluationCell;
import org.apache.poi.ss.formula.EvaluationListener;
import org.apache.poi.ss.formula.WorkbookEvaluator;
import org.apache.poi.ss.formula.WorkbookEvaluatorTestHelper;
import org.apache.poi.ss.formula.eval.NumberEval;
import org.apache.poi.ss.formula.eval.ValueEval;
import org.apache.poi.ss.usermodel.BaseTestFormulaEvaluator;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellType;
import org.apache.poi.ss.usermodel.CellValue;
import org.junit.jupiter.api.Test;
final class TestHSSFFormulaEvaluator extends BaseTestFormulaEvaluator {
public TestHSSFFormulaEvaluator() {
super(HSSFITestDataProvider.instance);
}
/**
* Test that the HSSFFormulaEvaluator can evaluate simple named ranges
* (single cells and rectangular areas)
*/
@Test
void testEvaluateSimple() throws IOException {
HSSFWorkbook wb = HSSFTestDataSamples.openSampleWorkbook("testNames.xls");
HSSFSheet sheet = wb.getSheetAt(0);
HSSFCell cell = sheet.getRow(8).getCell(0);
HSSFFormulaEvaluator fe = new HSSFFormulaEvaluator(wb);
CellValue cv = fe.evaluate(cell);
assertEquals(CellType.NUMERIC, cv.getCellType());
assertEquals(3.72, cv.getNumberValue(), 0.0);
wb.close();
}
/**
* When evaluating defined names, POI has to decide whether it is capable. Currently
* (May2009) POI only supports simple cell and area refs.<br>
* The sample spreadsheet (bugzilla attachment 23508) had a name flagged as 'complex'
* which contained a simple area ref. It is not clear what the 'complex' flag is used
* for but POI should look elsewhere to decide whether it can evaluate the name.
*/
@Test
void testDefinedNameWithComplexFlag_bug47048() throws IOException {
// Mock up a spreadsheet to match the critical details of the sample
try (HSSFWorkbook wb = new HSSFWorkbook()) {
HSSFSheet sheet = wb.createSheet("Input");
HSSFName definedName = wb.createName();
definedName.setNameName("Is_Multicar_Vehicle");
definedName.setRefersToFormula("Input!$B$17:$G$17");
// Set up some data and the formula
HSSFRow row17 = sheet.createRow(16);
row17.createCell(0).setCellValue(25.0);
row17.createCell(1).setCellValue(1.33);
row17.createCell(2).setCellValue(4.0);
HSSFRow row = sheet.createRow(0);
HSSFCell cellA1 = row.createCell(0);
cellA1.setCellFormula("SUM(Is_Multicar_Vehicle)");
// Set the complex flag - POI doesn't usually manipulate this flag
NameRecord nameRec = TestHSSFName.getNameRecord(definedName);
nameRec.setOptionFlag((short) 0x10); // 0x10 -> complex
HSSFFormulaEvaluator hsf = new HSSFFormulaEvaluator(wb);
CellValue value = hsf.evaluate(cellA1);
assertEquals(CellType.NUMERIC, value.getCellType());
assertEquals(5.33, value.getNumberValue(), 0.0);
} catch (RuntimeException e) {
if (e.getMessage().equals("Don't know how to evaluate name 'Is_Multicar_Vehicle'")) {
fail("Identified bug 47048a");
}
throw e;
}
}
private static final class EvalCountListener extends EvaluationListener {
private int _evalCount;
public EvalCountListener() {
_evalCount = 0;
}
@Override
public void onStartEvaluate(EvaluationCell cell, ICacheEntry entry) {
_evalCount++;
}
public int getEvalCount() {
return _evalCount;
}
}
/**
* The HSSFFormula evaluator performance benefits greatly from caching of intermediate cell values
*/
@Test
void testShortCircuitIfEvaluation() throws IOException {
// Set up a simple IF() formula that has measurable evaluation cost for its operands.
try (HSSFWorkbook wb = new HSSFWorkbook()) {
HSSFSheet sheet = wb.createSheet("Sheet1");
HSSFRow row = sheet.createRow(0);
HSSFCell cellA1 = row.createCell(0);
cellA1.setCellFormula("if(B1,C1,D1+E1+F1)");
// populate cells B1..F1 with simple formulas instead of plain values so we can use
// EvaluationListener to check which parts of the first formula get evaluated
for (int i = 1; i < 6; i++) {
// formulas are just literal constants "1".."5"
row.createCell(i).setCellFormula(String.valueOf(i));
}
EvalCountListener evalListener = new EvalCountListener();
WorkbookEvaluator evaluator = WorkbookEvaluatorTestHelper.createEvaluator(wb, evalListener);
ValueEval ve = evaluator.evaluate(HSSFEvaluationTestHelper.wrapCell(cellA1));
int evalCount = evalListener.getEvalCount();
// Without short-circuit-if evaluation, evaluating cell 'A1' takes 3 extra evaluations (for D1,E1,F1)
assertNotEquals(6, evalCount, "Identifed bug 48195 - Formula evaluator should short-circuit IF() calculations.");
assertEquals(3, evalCount);
assertEquals(2.0, ((NumberEval) ve).getNumberValue(), 0D);
}
}
/**
* Ensures that we can handle NameXPtgs in the formulas
* we parse.
*/
@Test
void testXRefs() throws IOException {
try (HSSFWorkbook wb1 = HSSFTestDataSamples.openSampleWorkbook("XRefCalc.xls");
HSSFWorkbook wb2 = HSSFTestDataSamples.openSampleWorkbook("XRefCalcData.xls")) {
Cell cell;
// VLookup on a name in another file
cell = wb1.getSheetAt(0).getRow(1).getCell(2);
assertEquals(CellType.FORMULA, cell.getCellType());
assertEquals(CellType.NUMERIC, cell.getCachedFormulaResultType());
assertEquals(12.30, cell.getNumericCellValue(), 0.0001);
// WARNING - this is wrong!
// The file name should be showing, but bug #45970 is fixed
// we seem to loose it
assertEquals("VLOOKUP(PART,COSTS,2,FALSE)", cell.getCellFormula());
// Simple reference to a name in another file
cell = wb1.getSheetAt(0).getRow(1).getCell(4);
assertEquals(CellType.FORMULA, cell.getCellType());
assertEquals(CellType.NUMERIC, cell.getCachedFormulaResultType());
assertEquals(36.90, cell.getNumericCellValue(), 0.0001);
// TODO Correct this!
// The file name should be shown too, see bug #56742
assertEquals("Cost*Markup_Cost", cell.getCellFormula());
// Evaluate the cells
HSSFFormulaEvaluator eval = new HSSFFormulaEvaluator(wb1);
HSSFFormulaEvaluator.setupEnvironment(
new String[]{"XRefCalc.xls", "XRefCalcData.xls"},
new HSSFFormulaEvaluator[]{
eval,
new HSSFFormulaEvaluator(wb2)
}
);
eval.evaluateFormulaCell(
wb1.getSheetAt(0).getRow(1).getCell(2)
);
eval.evaluateFormulaCell(
wb1.getSheetAt(0).getRow(1).getCell(4)
);
// Re-check VLOOKUP one
cell = wb1.getSheetAt(0).getRow(1).getCell(2);
assertEquals(CellType.FORMULA, cell.getCellType());
assertEquals(CellType.NUMERIC, cell.getCachedFormulaResultType());
assertEquals(12.30, cell.getNumericCellValue(), 0.0001);
// Re-check ref one
cell = wb1.getSheetAt(0).getRow(1).getCell(4);
assertEquals(CellType.FORMULA, cell.getCellType());
assertEquals(CellType.NUMERIC, cell.getCachedFormulaResultType());
assertEquals(36.90, cell.getNumericCellValue(), 0.0001);
// Add a formula that refers to one of the existing external workbooks
cell = wb1.getSheetAt(0).getRow(1).createCell(40);
cell.setCellFormula("Cost*[XRefCalcData.xls]MarkupSheet!$B$1");
// Check is was stored correctly
assertEquals("Cost*[XRefCalcData.xls]MarkupSheet!$B$1", cell.getCellFormula());
// Check it evaluates correctly
eval.evaluateFormulaCell(cell);
assertEquals(24.60 * 1.8, cell.getNumericCellValue(), 0);
// Try to add a formula for a new external workbook, won't be allowed to start
cell = wb1.getSheetAt(0).getRow(1).createCell(42);
final Cell cell2 = cell;
assertThrows(Exception.class, () -> cell2.setCellFormula("[alt.xls]Sheet0!$A$1"),
"New workbook not linked, shouldn't be able to add");
// Link our new workbook
try (HSSFWorkbook wb3 = new HSSFWorkbook()) {
wb3.createSheet().createRow(0).createCell(0).setCellValue("In another workbook");
assertEquals(2, wb1.linkExternalWorkbook("alt.xls", wb3));
// Now add a formula that refers to our new workbook
cell.setCellFormula("[alt.xls]Sheet0!$A$1");
assertEquals("[alt.xls]Sheet0!$A$1", cell.getCellFormula());
HSSFFormulaEvaluator eval2 = eval;
assertThrows(Exception.class, () -> eval2.evaluate(cell2),
"No cached value and no link to workbook, shouldn't evaluate");
// Add a link, check it does
HSSFFormulaEvaluator.setupEnvironment(
new String[]{"XRefCalc.xls", "XRefCalcData.xls", "alt.xls"},
new HSSFFormulaEvaluator[]{
eval,
new HSSFFormulaEvaluator(wb2),
new HSSFFormulaEvaluator(wb3)
}
);
eval.evaluateFormulaCell(cell);
assertEquals("In another workbook", cell.getStringCellValue());
// Save and re-load
try (HSSFWorkbook wb4 = HSSFTestDataSamples.writeOutAndReadBack(wb1)) {
eval = new HSSFFormulaEvaluator(wb4);
HSSFFormulaEvaluator.setupEnvironment(
new String[]{"XRefCalc.xls", "XRefCalcData.xls", "alt.xls"},
new HSSFFormulaEvaluator[]{
eval,
new HSSFFormulaEvaluator(wb2),
new HSSFFormulaEvaluator(wb3)
}
);
// Check the one referring to the previously existing workbook behaves
cell = wb4.getSheetAt(0).getRow(1).getCell(40);
assertEquals("Cost*[XRefCalcData.xls]MarkupSheet!$B$1", cell.getCellFormula());
eval.evaluateFormulaCell(cell);
assertEquals(24.60 * 1.8, cell.getNumericCellValue(), 0);
// Now check the newly added reference
cell = wb4.getSheetAt(0).getRow(1).getCell(42);
assertEquals("[alt.xls]Sheet0!$A$1", cell.getCellFormula());
eval.evaluateFormulaCell(cell);
assertEquals("In another workbook", cell.getStringCellValue());
}
}
}
}
}