poi/src/testcases/org/apache/poi/ss/formula/eval/TestPercentEval.java

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   this work for additional information regarding copyright ownership.
   The ASF licenses this file to You under the Apache License, Version 2.0
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package org.apache.poi.ss.formula.eval;

import junit.framework.AssertionFailedError;
import junit.framework.TestCase;

import org.apache.poi.ss.formula.functions.EvalFactory;
import org.apache.poi.ss.formula.functions.NumericFunctionInvoker;
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.CellType;
import org.apache.poi.ss.usermodel.CellValue;

/**
 * Test for percent operator evaluator.
 *
 * @author Josh Micich
 */
public final class TestPercentEval extends TestCase {

	private static void confirm(ValueEval arg, double expectedResult) {
		ValueEval[] args = {
			arg,
		};

		double result = NumericFunctionInvoker.invoke(PercentEval.instance, args, 0, 0);

		assertEquals(expectedResult, result, 0);
	}

	public void testBasic() {
		confirm(new NumberEval(5), 0.05);
		confirm(new NumberEval(3000), 30.0);
		confirm(new NumberEval(-150), -1.5);
		confirm(new StringEval("0.2"), 0.002);
		confirm(BoolEval.TRUE, 0.01);
	}

	public void test1x1Area() {
		AreaEval ae = EvalFactory.createAreaEval("B2:B2", new ValueEval[] { new NumberEval(50), });
		confirm(ae, 0.5);
	}
	public void testInSpreadSheet() {
		HSSFWorkbook wb = new HSSFWorkbook();
		HSSFSheet sheet = wb.createSheet("Sheet1");
		HSSFRow row = sheet.createRow(0);
		HSSFCell cell = row.createCell(0);
		cell.setCellFormula("B1%");
		row.createCell(1).setCellValue(50.0);

		HSSFFormulaEvaluator fe = new HSSFFormulaEvaluator(wb);
		CellValue cv;
		try {
			cv = fe.evaluate(cell);
		} catch (RuntimeException e) {
			if(e.getCause() instanceof NullPointerException) {
				throw new AssertionFailedError("Identified bug 44608");
			}
			// else some other unexpected error
			throw e;
		}
		assertEquals(CellType.NUMERIC, cv.getCellTypeEnum());
		assertEquals(0.5, cv.getNumberValue(), 0.0);
	}
}