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this work for additional information regarding copyright ownership.
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package org.apache.poi.ss.formula.eval;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.fail;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Locale;
import org.apache.poi.hssf.HSSFTestDataSamples;
import org.apache.poi.hssf.usermodel.HSSFFormulaEvaluator;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.formula.functions.TestMathX;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellType;
import org.apache.poi.ss.usermodel.CellValue;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.util.LocaleUtil;
import org.junit.AfterClass;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameter;
import org.junit.runners.Parameterized.Parameters;
import junit.framework.AssertionFailedError;
/**
* Tests formulas and operators as loaded from a test data spreadsheet.<p/>
* This class does not test implementors of <tt>Function</tt> and <tt>OperationEval</tt> in
* isolation. Much of the evaluation engine (i.e. <tt>HSSFFormulaEvaluator</tt>, ...) gets
* exercised as well. Tests for bug fixes and specific/tricky behaviour can be found in the
* corresponding test class (<tt>TestXxxx</tt>) of the target (<tt>Xxxx</tt>) implementor,
* where execution can be observed more easily.
*/
@RunWith(Parameterized.class)
public final class TestFormulasFromSpreadsheet {
private static HSSFWorkbook workbook;
private static Sheet sheet;
private static HSSFFormulaEvaluator evaluator;
private static Locale userLocale;
/**
* This class defines constants for navigating around the test data spreadsheet used for these tests.
*/
private static interface SS {
/**
* Name of the test spreadsheet (found in the standard test data folder)
*/
String FILENAME = "FormulaEvalTestData.xls";
/**
* Row (zero-based) in the test spreadsheet where the operator examples start.
*/
int START_OPERATORS_ROW_INDEX = 22; // Row '23'
/**
* Row (zero-based) in the test spreadsheet where the function examples start.
*/
int START_FUNCTIONS_ROW_INDEX = 95; // Row '96'
/**
* Index of the column that contains the function names
*/
int COLUMN_INDEX_FUNCTION_NAME = 1; // Column 'B'
/**
* Used to indicate when there are no more functions left
*/
String FUNCTION_NAMES_END_SENTINEL = "<END-OF-FUNCTIONS>";
/**
* Index of the column where the test values start (for each function)
*/
short COLUMN_INDEX_FIRST_TEST_VALUE = 3; // Column 'D'
/**
* Each function takes 4 rows in the test spreadsheet
*/
int NUMBER_OF_ROWS_PER_FUNCTION = 4;
}
@Parameter(value = 0)
public String targetFunctionName;
@Parameter(value = 1)
public int formulasRowIdx;
@Parameter(value = 2)
public int expectedValuesRowIdx;
@AfterClass
public static void closeResource() throws Exception {
LocaleUtil.setUserLocale(userLocale);
workbook.close();
}
@Parameters(name="{0}")
public static Collection<Object[]> data() throws Exception {
// Function "Text" uses custom-formats which are locale specific
// can't set the locale on a per-testrun execution, as some settings have been
// already set, when we would try to change the locale by then
userLocale = LocaleUtil.getUserLocale();
LocaleUtil.setUserLocale(Locale.ROOT);
workbook = HSSFTestDataSamples.openSampleWorkbook(SS.FILENAME);
sheet = workbook.getSheetAt( 0 );
evaluator = new HSSFFormulaEvaluator(workbook);
List<Object[]> data = new ArrayList<Object[]>();
processFunctionGroup(data, SS.START_OPERATORS_ROW_INDEX, null);
processFunctionGroup(data, SS.START_FUNCTIONS_ROW_INDEX, null);
// example for debugging individual functions/operators:
// processFunctionGroup(data, SS.START_OPERATORS_ROW_INDEX, "ConcatEval");
// processFunctionGroup(data, SS.START_FUNCTIONS_ROW_INDEX, "Text");
return data;
}
/**
* @param startRowIndex row index in the spreadsheet where the first function/operator is found
* @param testFocusFunctionName name of a single function/operator to test alone.
* Typically pass <code>null</code> to test all functions
*/
private static void processFunctionGroup(List<Object[]> data, int startRowIndex, String testFocusFunctionName) {
for (int rowIndex = startRowIndex; true; rowIndex += SS.NUMBER_OF_ROWS_PER_FUNCTION) {
Row r = sheet.getRow(rowIndex);
String targetFunctionName = getTargetFunctionName(r);
assertNotNull("Test spreadsheet cell empty on row ("
+ (rowIndex+1) + "). Expected function name or '"
+ SS.FUNCTION_NAMES_END_SENTINEL + "'", targetFunctionName);
if(targetFunctionName.equals(SS.FUNCTION_NAMES_END_SENTINEL)) {
// found end of functions list
break;
}
if(testFocusFunctionName == null || targetFunctionName.equalsIgnoreCase(testFocusFunctionName)) {
// expected results are on the row below
Row expectedValuesRow = sheet.getRow(rowIndex + 1);
int missingRowNum = rowIndex + 2; //+1 for 1-based, +1 for next row
assertNotNull("Missing expected values row for function '"
+ targetFunctionName + " (row " + missingRowNum + ")", expectedValuesRow);
data.add(new Object[]{targetFunctionName, rowIndex, rowIndex + 1});
}
}
}
@Test
public void processFunctionRow() {
Row formulasRow = sheet.getRow(formulasRowIdx);
Row expectedValuesRow = sheet.getRow(expectedValuesRowIdx);
short endcolnum = formulasRow.getLastCellNum();
// iterate across the row for all the evaluation cases
for (int colnum=SS.COLUMN_INDEX_FIRST_TEST_VALUE; colnum < endcolnum; colnum++) {
Cell c = formulasRow.getCell(colnum);
if (c == null || c.getCellTypeEnum() != CellType.FORMULA) {
continue;
}
CellValue actValue = evaluator.evaluate(c);
Cell expValue = (expectedValuesRow == null) ? null : expectedValuesRow.getCell(colnum);
String msg = String.format(Locale.ROOT, "Function '%s': Formula: %s @ %d:%d"
, targetFunctionName, c.getCellFormula(), formulasRow.getRowNum(), colnum);
assertNotNull(msg + " - Bad setup data expected value is null", expValue);
assertNotNull(msg + " - actual value was null", actValue);
final CellType cellType = expValue.getCellTypeEnum();
switch (cellType) {
case BLANK:
assertEquals(msg, CellType.BLANK, actValue.getCellTypeEnum());
break;
case BOOLEAN:
assertEquals(msg, CellType.BOOLEAN, actValue.getCellTypeEnum());
assertEquals(msg, expValue.getBooleanCellValue(), actValue.getBooleanValue());
break;
case ERROR:
assertEquals(msg, CellType.ERROR, actValue.getCellTypeEnum());
assertEquals(msg, ErrorEval.getText(expValue.getErrorCellValue()), ErrorEval.getText(actValue.getErrorValue()));
break;
case FORMULA: // will never be used, since we will call method after formula evaluation
fail("Cannot expect formula as result of formula evaluation: " + msg);
case NUMERIC:
assertEquals(msg, CellType.NUMERIC, actValue.getCellTypeEnum());
TestMathX.assertEquals(msg, expValue.getNumericCellValue(), actValue.getNumberValue(), TestMathX.POS_ZERO, TestMathX.DIFF_TOLERANCE_FACTOR);
break;
case STRING:
assertEquals(msg, CellType.STRING, actValue.getCellTypeEnum());
assertEquals(msg, expValue.getRichStringCellValue().getString(), actValue.getStringValue());
break;
default:
fail("Unexpected cell type: " + cellType);
}
}
}
/**
* @return <code>null</code> if cell is missing, empty or blank
*/
private static String getTargetFunctionName(Row r) {
if(r == null) {
System.err.println("Warning - given null row, can't figure out function name");
return null;
}
Cell cell = r.getCell(SS.COLUMN_INDEX_FUNCTION_NAME);
if(cell == null) {
System.err.println("Warning - Row " + r.getRowNum() + " has no cell " + SS.COLUMN_INDEX_FUNCTION_NAME + ", can't figure out function name");
return null;
}
if(cell.getCellTypeEnum() == CellType.BLANK) {
return null;
}
if(cell.getCellTypeEnum() == CellType.STRING) {
return cell.getRichStringCellValue().getString();
}
throw new AssertionFailedError("Bad cell type for 'function name' column: ("
+ cell.getCellTypeEnum() + ") row (" + (r.getRowNum() +1) + ")");
}
}