| /* ==================================================================== |
| 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.ss.formula.functions; |
| |
| import junit.framework.TestCase; |
| import junit.framework.AssertionFailedError; |
| import org.apache.poi.hssf.usermodel.*; |
| import org.apache.poi.hssf.HSSFTestDataSamples; |
| import org.apache.poi.ss.usermodel.CellValue; |
| |
| /** |
| * Tests for {@link Npv} |
| * |
| * @author Marcel May |
| * @see <a href="http://office.microsoft.com/en-us/excel-help/npv-HP005209199.aspx">Excel Help</a> |
| */ |
| public final class TestNpv extends TestCase { |
| |
| public void testEvaluateInSheetExample2() { |
| HSSFWorkbook wb = new HSSFWorkbook(); |
| HSSFSheet sheet = wb.createSheet("Sheet1"); |
| HSSFRow row = sheet.createRow(0); |
| |
| sheet.createRow(1).createCell(0).setCellValue(0.08d); |
| sheet.createRow(2).createCell(0).setCellValue(-40000d); |
| sheet.createRow(3).createCell(0).setCellValue(8000d); |
| sheet.createRow(4).createCell(0).setCellValue(9200d); |
| sheet.createRow(5).createCell(0).setCellValue(10000d); |
| sheet.createRow(6).createCell(0).setCellValue(12000d); |
| sheet.createRow(7).createCell(0).setCellValue(14500d); |
| |
| HSSFCell cell = row.createCell(8); |
| HSSFFormulaEvaluator fe = new HSSFFormulaEvaluator(wb); |
| |
| // Enumeration |
| cell.setCellFormula("NPV(A2, A4,A5,A6,A7,A8)+A3"); |
| fe.clearAllCachedResultValues(); |
| fe.evaluateFormulaCellEnum(cell); |
| double res = cell.getNumericCellValue(); |
| assertEquals(1922.06d, Math.round(res * 100d) / 100d); |
| |
| // Range |
| cell.setCellFormula("NPV(A2, A4:A8)+A3"); |
| |
| fe.clearAllCachedResultValues(); |
| fe.evaluateFormulaCellEnum(cell); |
| res = cell.getNumericCellValue(); |
| assertEquals(1922.06d, Math.round(res * 100d) / 100d); |
| } |
| |
| /** |
| * evaluate formulas with NPV and compare the result with |
| * the cached formula result pre-calculated by Excel |
| */ |
| public void testNpvFromSpreadsheet(){ |
| HSSFWorkbook wb = HSSFTestDataSamples.openSampleWorkbook("IrrNpvTestCaseData.xls"); |
| HSSFSheet sheet = wb.getSheet("IRR-NPV"); |
| HSSFFormulaEvaluator fe = new HSSFFormulaEvaluator(wb); |
| StringBuffer failures = new StringBuffer(); |
| int failureCount = 0; |
| // TODO YK: Formulas in rows 16 and 17 operate with ArrayPtg which isn't yet supported |
| // FormulaEvaluator as of r1041407 throws "Unexpected ptg class (org.apache.poi.ss.formula.ptg.ArrayPtg)" |
| for(int rownum = 9; rownum <= 15; rownum++){ |
| HSSFRow row = sheet.getRow(rownum); |
| HSSFCell cellB = row.getCell(1); |
| try { |
| CellValue cv = fe.evaluate(cellB); |
| assertFormulaResult(cv, cellB); |
| } catch (Throwable e){ |
| if(failures.length() > 0) failures.append('\n'); |
| failures.append("Row[" + (cellB.getRowIndex() + 1)+ "]: " + cellB.getCellFormula() + " "); |
| failures.append(e.getMessage()); |
| failureCount++; |
| } |
| } |
| |
| if(failures.length() > 0) { |
| throw new AssertionFailedError(failureCount + " IRR evaluations failed:\n" + failures.toString()); |
| } |
| } |
| |
| private static void assertFormulaResult(CellValue cv, HSSFCell cell){ |
| double actualValue = cv.getNumberValue(); |
| double expectedValue = cell.getNumericCellValue(); // cached formula result calculated by Excel |
| assertEquals(expectedValue, actualValue, 1E-4); // should agree within 0.01% |
| } |
| } |