Make a start on running all the formula tests for xssf. Currently not enabled, as many fail, but provides a start

git-svn-id: https://svn.apache.org/repos/asf/poi/branches/ooxml@642741 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/poi/hssf/record/BoolErrRecord.java

@@ -45,9 +45,16 @@ public class BoolErrRecord
     private short             field_3_xf_index;
     private byte              field_4_bBoolErr;
     private byte              field_5_fError;
+    
+    public static final byte NULL = 0;
+    public static final byte DIV0 = 7;
+    public static final byte VALUE = 15;
+    public static final byte REF = 23;
+    public static final byte NAME = 29;
+    public static final byte NUM = 36;
+    public static final byte NA = 42;
 
     /** Creates new BoolErrRecord */
-
     public BoolErrRecord()
     {
     }

src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFCell.java

@@ -20,6 +20,7 @@ package org.apache.poi.xssf.usermodel;
 import java.util.Calendar;
 import java.util.Date;
 
+import org.apache.poi.hssf.record.BoolErrRecord;
 import org.apache.poi.hssf.usermodel.HSSFDateUtil;
 import org.apache.poi.ss.usermodel.Cell;
 import org.apache.poi.ss.usermodel.CellStyle;
@@ -139,12 +140,47 @@ public class XSSFCell implements Cell {
         throw new NumberFormatException("You cannot get a date value from a cell of type " + this.cell.getT());
     }
 
+    /**
+     * Returns the error message, such as #VALUE!
+     */
+    public String getErrorCellString() {
+        if (STCellType.E != cell.getT()) { 
+            throw new NumberFormatException("You cannot get a error value from a non-error cell");
+        }
+        if (this.cell.isSetV()) {
+        	return this.cell.getV();
+        }
+        return null;
+    }
+    /**
+     * Returns the error type, in the same way that
+     *  HSSFCell does. See {@link BoolErrRecord} for details
+     */
     public byte getErrorCellValue() {
         if (STCellType.E != cell.getT()) { 
             throw new NumberFormatException("You cannot get a error value from a non-error cell");
         }
         if (this.cell.isSetV()) {
-            return Byte.parseByte(this.cell.getV());
+        	String errS = this.cell.getV();
+        	if(errS.equals("#NULL!")) {
+        		return BoolErrRecord.NULL;
+        	}
+        	if(errS.equals("#DIV/0!")) {
+        		return BoolErrRecord.DIV0;
+        	}
+        	if(errS.equals("#VALUE!")) {
+        		return BoolErrRecord.VALUE;
+        	}
+        	if(errS.equals("#REF!")) {
+        		return BoolErrRecord.REF;
+        	}
+        	if(errS.equals("#NAME?")) {
+        		return BoolErrRecord.NAME;
+        	}
+        	if(errS.equals("#NUM!")) {
+        		return BoolErrRecord.NUM;
+        	}
+        	return BoolErrRecord.NA;
         }
         return 0;
     }

src/ooxml/testcases/org/apache/poi/xssf/usermodel/TestFormulaEvaluatorOnXSSF.java

@@ -0,0 +1,341 @@
+/*
+* Licensed to the Apache Software Foundation (ASF) under one or more
+* contributor license agreements.  See the NOTICE file distributed with
+* 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
+* the License.  You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+package org.apache.poi.xssf.usermodel;
+
+import java.io.PrintStream;
+
+import junit.framework.Assert;
+import junit.framework.AssertionFailedError;
+import junit.framework.TestCase;
+
+import org.apache.poi.hssf.record.formula.eval.TestFormulasFromSpreadsheet;
+import org.apache.poi.hssf.record.formula.functions.TestMathX;
+import org.apache.poi.ss.usermodel.Cell;
+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.openxml4j.opc.Package;
+
+/**
+ * Performs much the same role as {@link TestFormulasFromSpreadsheet},
+ *  except for a XSSF spreadsheet, not a HSSF one.
+ * This allows us to check that all our Formula Evaluation code
+ *  is able to work for XSSF, as well as for HSSF.
+ * 
+ * Periodically, you should open FormulaEvalTestData.xls in
+ *  Excel 2007, and re-save it as FormulaEvalTestData_Copy.xlsx
+ *  
+ * Currently disabled, as doesn't work
+ */
+public final class TestFormulaEvaluatorOnXSSF extends TestCase {
+	
+	private static final class Result {
+		public static final int SOME_EVALUATIONS_FAILED = -1;
+		public static final int ALL_EVALUATIONS_SUCCEEDED = +1;
+		public static final int NO_EVALUATIONS_FOUND = 0;
+	}
+
+	/** 
+	 * This class defines constants for navigating around the test data spreadsheet used for these tests.
+	 */
+	private static final class SS {
+		
+		/**
+		 * Name of the test spreadsheet (found in the standard test data folder)
+		 */
+		public final static String FILENAME = "FormulaEvalTestData_Copy.xlsx";
+		/**
+		 * Row (zero-based) in the test spreadsheet where the operator examples start.
+		 */
+		public static final int START_OPERATORS_ROW_INDEX = 22; // Row '23'
+		/**
+		 * Row (zero-based) in the test spreadsheet where the function examples start.
+		 */
+		public static final int START_FUNCTIONS_ROW_INDEX = 87; // Row '88' 
+		/** 
+		 * Index of the column that contains the function names
+		 */
+		public static final short COLUMN_INDEX_FUNCTION_NAME = 1; // Column 'B'
+	
+		/**
+		 * Used to indicate when there are no more functions left
+		 */
+		public static final String FUNCTION_NAMES_END_SENTINEL = "<END-OF-FUNCTIONS>";
+	
+		/**
+		 * Index of the column where the test values start (for each function)
+		 */
+		public static final short COLUMN_INDEX_FIRST_TEST_VALUE = 3; // Column 'D'
+		
+		/**
+		 * Each function takes 4 rows in the test spreadsheet 
+		 */
+		public static final int NUMBER_OF_ROWS_PER_FUNCTION = 4;
+	}
+
+	private Workbook workbook;
+	private Sheet sheet;
+	// Note - multiple failures are aggregated before ending.  
+	// If one or more functions fail, a single AssertionFailedError is thrown at the end
+	private int _functionFailureCount;
+	private int _functionSuccessCount;
+	private int _evaluationFailureCount;
+	private int _evaluationSuccessCount;
+
+	private static final Cell getExpectedValueCell(Row row, short columnIndex) {
+		if (row == null) {
+			return null;
+		}
+		return row.getCell(columnIndex);
+	}
+
+
+	private static void confirmExpectedResult(String msg, Cell expected, FormulaEvaluator.CellValue actual) {
+		if (expected == null) {
+			throw new AssertionFailedError(msg + " - Bad setup data expected value is null");
+		}
+		if(actual == null) {
+			throw new AssertionFailedError(msg + " - actual value was null");
+		}
+		
+		if (expected.getCellType() == Cell.CELL_TYPE_STRING) {
+			String value = expected.getRichStringCellValue().getString();
+			if (value.startsWith("#")) {
+				// TODO - this code never called
+				expected.setCellType(Cell.CELL_TYPE_ERROR);
+				// expected.setCellErrorValue(...?);
+			}
+		}
+		
+		switch (expected.getCellType()) {
+			case Cell.CELL_TYPE_BLANK:
+				assertEquals(msg, Cell.CELL_TYPE_BLANK, actual.getCellType());
+				break;
+			case Cell.CELL_TYPE_BOOLEAN:
+				assertEquals(msg, Cell.CELL_TYPE_BOOLEAN, actual.getCellType());
+				assertEquals(msg, expected.getBooleanCellValue(), actual.getBooleanValue());
+				break;
+			case Cell.CELL_TYPE_ERROR:
+				assertEquals(msg, Cell.CELL_TYPE_ERROR, actual.getCellType());
+				if(false) { // TODO: fix ~45 functions which are currently returning incorrect error values
+					assertEquals(msg, expected.getErrorCellValue(), actual.getErrorValue());
+				}
+				break;
+			case Cell.CELL_TYPE_FORMULA: // will never be used, since we will call method after formula evaluation
+				throw new AssertionFailedError("Cannot expect formula as result of formula evaluation: " + msg);
+			case Cell.CELL_TYPE_NUMERIC:
+				assertEquals(msg, Cell.CELL_TYPE_NUMERIC, actual.getCellType());
+				TestMathX.assertEquals(msg, expected.getNumericCellValue(), actual.getNumberValue(), TestMathX.POS_ZERO, TestMathX.DIFF_TOLERANCE_FACTOR);
+//				double delta = Math.abs(expected.getNumericCellValue()-actual.getNumberValue());
+//				double pctExpected = Math.abs(0.00001*expected.getNumericCellValue());
+//				assertTrue(msg, delta <= pctExpected);
+				break;
+			case Cell.CELL_TYPE_STRING:
+				assertEquals(msg, Cell.CELL_TYPE_STRING, actual.getCellType());
+				assertEquals(msg, expected.getRichStringCellValue().getString(), actual.getRichTextStringValue().getString());
+				break;
+		}
+	}
+
+
+	protected void setUp() throws Exception {
+		if (workbook == null) {
+			String filePath = System.getProperty("HSSF.testdata.path")+ "/" + SS.FILENAME;
+			Package pkg = Package.open(filePath);
+			workbook = new XSSFWorkbook( pkg );
+			sheet = workbook.getSheetAt( 0 );
+		  }
+		_functionFailureCount = 0;
+		_functionSuccessCount = 0;
+		_evaluationFailureCount = 0;
+		_evaluationSuccessCount = 0;
+	}
+	
+	/**
+	 * Checks that we can actually open the file
+	 */
+	public void testOpen() {
+		assertNotNull(workbook);
+	}
+	
+	/**
+	 * Disabled for now, as many things seem to break
+	 *  for XSSF, which is a shame
+	 */
+	public void DISABLEDtestFunctionsFromTestSpreadsheet() {
+		
+		processFunctionGroup(SS.START_OPERATORS_ROW_INDEX, null);
+		processFunctionGroup(SS.START_FUNCTIONS_ROW_INDEX, null);
+		// example for debugging individual functions/operators:
+//		processFunctionGroup(SS.START_OPERATORS_ROW_INDEX, "ConcatEval");
+//		processFunctionGroup(SS.START_FUNCTIONS_ROW_INDEX, "AVERAGE");
+		
+		// confirm results
+		String successMsg = "There were " 
+				+ _evaluationSuccessCount + " successful evaluation(s) and "
+				+ _functionSuccessCount + " function(s) without error";
+ 		if(_functionFailureCount > 0) {
+			String msg = _functionFailureCount + " function(s) failed in "
+			+ _evaluationFailureCount + " evaluation(s).  " + successMsg;
+			throw new AssertionFailedError(msg);
+		}
+ 		if(false) { // normally no output for successful tests
+ 			System.out.println(getClass().getName() + ": " + successMsg);
+ 		}
+	}
+
+	/**
+	 * @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 void processFunctionGroup(int startRowIndex, String testFocusFunctionName) {
+ 
+		FormulaEvaluator evaluator = new FormulaEvaluator(sheet, workbook);
+
+		int rowIndex = startRowIndex;
+		while (true) {
+			Row r = sheet.getRow(rowIndex);
+			String targetFunctionName = getTargetFunctionName(r);
+			if(targetFunctionName == null) {
+				throw new AssertionFailedError("Test spreadsheet cell empty on row (" 
+						+ (rowIndex+1) + "). Expected function name or '"
+						+ SS.FUNCTION_NAMES_END_SENTINEL + "'");
+			}
+			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);
+				if(expectedValuesRow == null) {
+					int missingRowNum = rowIndex + 2; //+1 for 1-based, +1 for next row
+					throw new AssertionFailedError("Missing expected values row for function '" 
+							+ targetFunctionName + " (row " + missingRowNum + ")"); 
+				}
+				switch(processFunctionRow(evaluator, targetFunctionName, r, expectedValuesRow)) {
+					case Result.ALL_EVALUATIONS_SUCCEEDED: _functionSuccessCount++; break;
+					case Result.SOME_EVALUATIONS_FAILED: _functionFailureCount++; break;
+					default:
+						throw new RuntimeException("unexpected result");
+					case Result.NO_EVALUATIONS_FOUND: // do nothing
+				}
+			}
+			rowIndex += SS.NUMBER_OF_ROWS_PER_FUNCTION;
+		}
+	}
+
+	/**
+	 * 
+	 * @return a constant from the local Result class denoting whether there were any evaluation
+	 * cases, and whether they all succeeded.
+	 */
+	private int processFunctionRow(FormulaEvaluator evaluator, String targetFunctionName, 
+			Row formulasRow, Row expectedValuesRow) {
+		
+		int result = Result.NO_EVALUATIONS_FOUND; // so far
+		short endcolnum = formulasRow.getLastCellNum();
+		evaluator.setCurrentRow(formulasRow);
+
+		// iterate across the row for all the evaluation cases
+		for (short colnum=SS.COLUMN_INDEX_FIRST_TEST_VALUE; colnum < endcolnum; colnum++) {
+			Cell c = formulasRow.getCell(colnum);
+			if (c == null || c.getCellType() != Cell.CELL_TYPE_FORMULA) {
+				continue;
+			}
+
+			FormulaEvaluator.CellValue actualValue = evaluator.evaluate(c);
+
+			Cell expectedValueCell = getExpectedValueCell(expectedValuesRow, colnum);
+			try {
+				confirmExpectedResult("Function '" + targetFunctionName + "': Formula: " + c.getCellFormula() + " @ " + formulasRow.getRowNum() + ":" + colnum,
+						expectedValueCell, actualValue);
+				_evaluationSuccessCount ++;
+				if(result != Result.SOME_EVALUATIONS_FAILED) {
+					result = Result.ALL_EVALUATIONS_SUCCEEDED;
+				}
+			} catch (AssertionFailedError e) {
+				_evaluationFailureCount ++;
+				printShortStackTrace(System.err, e);
+				result = Result.SOME_EVALUATIONS_FAILED;
+			}
+		}
+ 		return result;
+	}
+
+	/**
+	 * Useful to keep output concise when expecting many failures to be reported by this test case
+	 */
+	private static void printShortStackTrace(PrintStream ps, AssertionFailedError e) {
+		StackTraceElement[] stes = e.getStackTrace();
+		
+		int startIx = 0;
+		// skip any top frames inside junit.framework.Assert
+		while(startIx<stes.length) {
+			if(!stes[startIx].getClassName().equals(Assert.class.getName())) {
+				break;
+			}
+			startIx++;
+		}
+		// skip bottom frames (part of junit framework)
+		int endIx = startIx+1;
+		while(endIx < stes.length) {
+			if(stes[endIx].getClassName().equals(TestCase.class.getName())) {
+				break;
+			}
+			endIx++;
+		}
+		if(startIx >= endIx) {
+			// something went wrong. just print the whole stack trace
+			e.printStackTrace(ps);
+		}
+		endIx -= 4; // skip 4 frames of reflection invocation
+		ps.println(e.toString());
+		for(int i=startIx; i<endIx; i++) {
+			ps.println("\tat " + stes[i].toString());
+		}
+		
+	}
+
+	/**
+	 * @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.getCellType() == Cell.CELL_TYPE_BLANK) {
+			return null;
+		}
+		if(cell.getCellType() == Cell.CELL_TYPE_STRING) {
+			return cell.getRichStringCellValue().getString();
+		}
+		
+		throw new AssertionFailedError("Bad cell type for 'function name' column: ("
+				+ cell.getCellType() + ") row (" + (r.getRowNum() +1) + ")");
+	}
+}

src/testcases/org/apache/poi/hssf/record/formula/eval/TestFormulasFromSpreadsheet.java

@@ -25,13 +25,12 @@ import junit.framework.AssertionFailedError;
 import junit.framework.TestCase;
 
 import org.apache.poi.hssf.record.formula.functions.TestMathX;
-import org.apache.poi.hssf.usermodel.HSSFCell;
-import org.apache.poi.hssf.usermodel.HSSFFormulaEvaluator;
-import org.apache.poi.hssf.usermodel.HSSFRow;
-import org.apache.poi.hssf.usermodel.HSSFSheet;
 import org.apache.poi.hssf.usermodel.HSSFWorkbook;
 import org.apache.poi.ss.usermodel.Cell;
 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;;
 
 /**
  * Tests formulas and operators as loaded from a test data spreadsheet.<p/>
@@ -89,8 +88,8 @@ public final class TestFormulasFromSpreadsheet extends TestCase {
 		public static final int NUMBER_OF_ROWS_PER_FUNCTION = 4;
 	}
 
-	private HSSFWorkbook workbook;
+	private Workbook workbook;
-	private HSSFSheet sheet;
+	private Sheet sheet;
 	// Note - multiple failures are aggregated before ending.  
 	// If one or more functions fail, a single AssertionFailedError is thrown at the end
 	private int _functionFailureCount;
@@ -98,7 +97,7 @@ public final class TestFormulasFromSpreadsheet extends TestCase {
 	private int _evaluationFailureCount;
 	private int _evaluationSuccessCount;
 
-	private static final HSSFCell getExpectedValueCell(HSSFRow row, short columnIndex) {
+	private static final Cell getExpectedValueCell(Row row, short columnIndex) {
 		if (row == null) {
 			return null;
 		}
@@ -114,40 +113,40 @@ public final class TestFormulasFromSpreadsheet extends TestCase {
 			throw new AssertionFailedError(msg + " - actual value was null");
 		}
 		
-		if (expected.getCellType() == HSSFCell.CELL_TYPE_STRING) {
+		if (expected.getCellType() == Cell.CELL_TYPE_STRING) {
 			String value = expected.getRichStringCellValue().getString();
 			if (value.startsWith("#")) {
 				// TODO - this code never called
-				expected.setCellType(HSSFCell.CELL_TYPE_ERROR);
+				expected.setCellType(Cell.CELL_TYPE_ERROR);
 				// expected.setCellErrorValue(...?);
 			}
 		}
 		
 		switch (expected.getCellType()) {
-			case HSSFCell.CELL_TYPE_BLANK:
+			case Cell.CELL_TYPE_BLANK:
-				assertEquals(msg, HSSFCell.CELL_TYPE_BLANK, actual.getCellType());
+				assertEquals(msg, Cell.CELL_TYPE_BLANK, actual.getCellType());
 				break;
-			case HSSFCell.CELL_TYPE_BOOLEAN:
+			case Cell.CELL_TYPE_BOOLEAN:
-				assertEquals(msg, HSSFCell.CELL_TYPE_BOOLEAN, actual.getCellType());
+				assertEquals(msg, Cell.CELL_TYPE_BOOLEAN, actual.getCellType());
 				assertEquals(msg, expected.getBooleanCellValue(), actual.getBooleanValue());
 				break;
-			case HSSFCell.CELL_TYPE_ERROR:
+			case Cell.CELL_TYPE_ERROR:
-				assertEquals(msg, HSSFCell.CELL_TYPE_ERROR, actual.getCellType());
+				assertEquals(msg, Cell.CELL_TYPE_ERROR, actual.getCellType());
 				if(false) { // TODO: fix ~45 functions which are currently returning incorrect error values
 					assertEquals(msg, expected.getErrorCellValue(), actual.getErrorValue());
 				}
 				break;
-			case HSSFCell.CELL_TYPE_FORMULA: // will never be used, since we will call method after formula evaluation
+			case Cell.CELL_TYPE_FORMULA: // will never be used, since we will call method after formula evaluation
 				throw new AssertionFailedError("Cannot expect formula as result of formula evaluation: " + msg);
-			case HSSFCell.CELL_TYPE_NUMERIC:
+			case Cell.CELL_TYPE_NUMERIC:
-				assertEquals(msg, HSSFCell.CELL_TYPE_NUMERIC, actual.getCellType());
+				assertEquals(msg, Cell.CELL_TYPE_NUMERIC, actual.getCellType());
 				TestMathX.assertEquals(msg, expected.getNumericCellValue(), actual.getNumberValue(), TestMathX.POS_ZERO, TestMathX.DIFF_TOLERANCE_FACTOR);
 //				double delta = Math.abs(expected.getNumericCellValue()-actual.getNumberValue());
 //				double pctExpected = Math.abs(0.00001*expected.getNumericCellValue());
 //				assertTrue(msg, delta <= pctExpected);
 				break;
-			case HSSFCell.CELL_TYPE_STRING:
+			case Cell.CELL_TYPE_STRING:
-				assertEquals(msg, HSSFCell.CELL_TYPE_STRING, actual.getCellType());
+				assertEquals(msg, Cell.CELL_TYPE_STRING, actual.getCellType());
 				assertEquals(msg, expected.getRichStringCellValue().getString(), actual.getRichTextStringValue().getString());
 				break;
 		}
@@ -196,11 +195,11 @@ public final class TestFormulasFromSpreadsheet extends TestCase {
 	 */
 	private void processFunctionGroup(int startRowIndex, String testFocusFunctionName) {
  
-		HSSFFormulaEvaluator evaluator = new HSSFFormulaEvaluator(sheet, workbook);
+		FormulaEvaluator evaluator = new FormulaEvaluator(sheet, workbook);
 
 		int rowIndex = startRowIndex;
 		while (true) {
-			HSSFRow r = sheet.getRow(rowIndex);
+			Row r = sheet.getRow(rowIndex);
 			String targetFunctionName = getTargetFunctionName(r);
 			if(targetFunctionName == null) {
 				throw new AssertionFailedError("Test spreadsheet cell empty on row (" 
@@ -214,7 +213,7 @@ public final class TestFormulasFromSpreadsheet extends TestCase {
 			if(testFocusFunctionName == null || targetFunctionName.equalsIgnoreCase(testFocusFunctionName)) {
 				
 				// expected results are on the row below
-				HSSFRow expectedValuesRow = sheet.getRow(rowIndex + 1);
+				Row expectedValuesRow = sheet.getRow(rowIndex + 1);
 				if(expectedValuesRow == null) {
 					int missingRowNum = rowIndex + 2; //+1 for 1-based, +1 for next row
 					throw new AssertionFailedError("Missing expected values row for function '" 
@@ -237,8 +236,8 @@ public final class TestFormulasFromSpreadsheet extends TestCase {
 	 * @return a constant from the local Result class denoting whether there were any evaluation
 	 * cases, and whether they all succeeded.
 	 */
-	private int processFunctionRow(HSSFFormulaEvaluator evaluator, String targetFunctionName, 
+	private int processFunctionRow(FormulaEvaluator evaluator, String targetFunctionName, 
-			HSSFRow formulasRow, HSSFRow expectedValuesRow) {
+			Row formulasRow, Row expectedValuesRow) {
 		
 		int result = Result.NO_EVALUATIONS_FOUND; // so far
 		short endcolnum = formulasRow.getLastCellNum();
@@ -246,14 +245,14 @@ public final class TestFormulasFromSpreadsheet extends TestCase {
 
 		// iterate across the row for all the evaluation cases
 		for (short colnum=SS.COLUMN_INDEX_FIRST_TEST_VALUE; colnum < endcolnum; colnum++) {
-			HSSFCell c = formulasRow.getCell(colnum);
+			Cell c = formulasRow.getCell(colnum);
-			if (c == null || c.getCellType() != HSSFCell.CELL_TYPE_FORMULA) {
+			if (c == null || c.getCellType() != Cell.CELL_TYPE_FORMULA) {
 				continue;
 			}
 
 			FormulaEvaluator.CellValue actualValue = evaluator.evaluate(c);
 
-			HSSFCell expectedValueCell = getExpectedValueCell(expectedValuesRow, colnum);
+			Cell expectedValueCell = getExpectedValueCell(expectedValuesRow, colnum);
 			try {
 				confirmExpectedResult("Function '" + targetFunctionName + "': Formula: " + c.getCellFormula() + " @ " + formulasRow.getRowNum() + ":" + colnum,
 						expectedValueCell, actualValue);
@@ -307,20 +306,20 @@ public final class TestFormulasFromSpreadsheet extends TestCase {
 	/**
 	 * @return <code>null</code> if cell is missing, empty or blank
 	 */
-	private static String getTargetFunctionName(HSSFRow r) {
+	private static String getTargetFunctionName(Row r) {
 		if(r == null) {
 			System.err.println("Warning - given null row, can't figure out function name");
 			return null;
 		}
-		HSSFCell cell = r.getCell(SS.COLUMN_INDEX_FUNCTION_NAME);
+		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.getCellType() == HSSFCell.CELL_TYPE_BLANK) {
+		if(cell.getCellType() == Cell.CELL_TYPE_BLANK) {
 			return null;
 		}
-		if(cell.getCellType() == HSSFCell.CELL_TYPE_STRING) {
+		if(cell.getCellType() == Cell.CELL_TYPE_STRING) {
 			return cell.getRichStringCellValue().getString();
 		}