package org.apache.poi.ss.formula.functions;
+import org.apache.poi.hssf.usermodel.HSSFCell;
+import org.apache.poi.hssf.usermodel.HSSFFormulaEvaluator;
+import org.apache.poi.hssf.usermodel.HSSFSheet;
+import org.apache.poi.hssf.usermodel.HSSFWorkbook;
+import org.apache.poi.ss.util.Utils;
import org.junit.jupiter.api.Test;
+import java.io.IOException;
+
+import static org.apache.poi.ss.util.Utils.addRow;
+
class TestFinanceLib extends BaseTestNumeric {
@Test
npv = FinanceLib.npv(r, v);
x = 11342283.4233124;
assertDouble("npv ", x, npv);
+
+ r = 0.08; v = new double[]{-1000, 500, 300, 800};
+ npv = FinanceLib.npv(r, v);
+ x = 328.9170387681793;
+ assertDouble("npv ", x, npv);
+
+ //https://support.microsoft.com/en-us/office/npv-function-8672cb67-2576-4d07-b67b-ac28acf2a568
+ r = 0.1; v = new double[]{-10000, 3000, 4200, 6800};
+ npv = FinanceLib.npv(r, v);
+ x = 1188.4434123352207;
+ assertDouble("npv ", x, npv);
+
+ r = 0.08; v = new double[]{-40000, 8000, 9200, 10000, 12000, 14500};
+ npv = FinanceLib.npv(r, v);
+ x = 1779.6866249373716;
+ assertDouble("npv ", x, npv);
+ }
+
+ @Test
+ void testMicrosoftNpvExample2() throws IOException {
+ //https://support.microsoft.com/en-us/office/npv-function-8672cb67-2576-4d07-b67b-ac28acf2a568
+ try (HSSFWorkbook wb = new HSSFWorkbook()) {
+ HSSFSheet sheet = wb.createSheet();
+ addRow(sheet, 0, "Data");
+ addRow(sheet, 1, 0.08);
+ addRow(sheet, 2, -40000);
+ addRow(sheet, 3, 8000);
+ addRow(sheet, 4, 9200);
+ addRow(sheet, 5, 10000);
+ addRow(sheet, 6, 12000);
+ addRow(sheet, 7, 14500);
+ HSSFFormulaEvaluator fe = new HSSFFormulaEvaluator(wb);
+ HSSFCell cell = wb.getSheetAt(0).getRow(0).createCell(100);
+ Utils.assertDouble(fe, cell, "NPV(A2, A4:A8)+A3", 1992.061554932363);
+ //TODO this scenario does not work
+ //Utils.assertDouble(fe, cell, "NPV(A2, A4:A8, -9000)+A3", -3749.47);
+ }
}
@Test