main/src/test/java/org/apache/poi/ss/formula/functions/TestNper.java

/* ====================================================================
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   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
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       http://www.apache.org/licenses/LICENSE-2.0

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   distributed under the License is distributed on an "AS IS" BASIS,
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   See the License for the specific language governing permissions and
   limitations under the License.
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package org.apache.poi.ss.formula.functions;

import static org.junit.jupiter.api.Assertions.assertEquals;

import java.io.IOException;

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.formula.eval.NumberEval;
import org.apache.poi.ss.formula.eval.ValueEval;
import org.apache.poi.ss.usermodel.CellType;
import org.apache.poi.ss.usermodel.FormulaError;
import org.junit.jupiter.api.Test;

/**
 * Tests for {@link FinanceFunction#NPER}
 */
final class TestNper {

    @Test
	void testSimpleEvaluate() {
		ValueEval[] args = {
			new NumberEval(0.05),
			new NumberEval(250),
			new NumberEval(-1000),
		};
		ValueEval result = FinanceFunction.NPER.evaluate(args, 0, (short)0);

		assertEquals(NumberEval.class, result.getClass());
		assertEquals(4.57353557, ((NumberEval)result).getNumberValue(), 0.00000001);
	}

    @Test
	void testEvaluate_bug_45732() throws IOException {
		HSSFWorkbook wb = new HSSFWorkbook();
		HSSFSheet sheet = wb.createSheet("Sheet1");
		HSSFCell cell = sheet.createRow(0).createCell(0);

		cell.setCellFormula("NPER(12,4500,100000,100000)");
		cell.setCellValue(15.0);
		assertEquals("NPER(12,4500,100000,100000)", cell.getCellFormula());
		assertEquals(CellType.NUMERIC, cell.getCachedFormulaResultType());
		assertEquals(15.0, cell.getNumericCellValue(), 0.0);

		HSSFFormulaEvaluator fe = new HSSFFormulaEvaluator(wb);
		fe.evaluateFormulaCell(cell);
		assertEquals(CellType.ERROR, cell.getCachedFormulaResultType());
		assertEquals(FormulaError.NUM.getCode(), cell.getErrorCellValue());
		wb.close();
	}
}