TestMissingArgEval.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 static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertTrue;

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.usermodel.CellValue;
import org.junit.jupiter.api.Test;

/**
 * Tests for {@link MissingArgEval}
 */
final class TestMissingArgEval {

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

            cell.setCellFormula("if(true,)");
            fe.clearAllCachedResultValues();
            // EmptyStackException -> Missing args evaluation not implemented (bug 43354)
            CellValue cv = fe.evaluate(cell);
            // MissingArg -> BlankEval -> zero (as formula result)
            assertEquals(0.0, cv.getNumberValue(), 0.0);

            // MissingArg -> BlankEval -> empty string (in concatenation)
            cell.setCellFormula("\"abc\"&if(true,)");
            fe.clearAllCachedResultValues();
            assertEquals("abc", fe.evaluate(cell).getStringValue());
        }
    }

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

            cell.setCellFormula("iferror(0/0,)<0");
            fe.clearAllCachedResultValues();
            CellValue cv = fe.evaluate(cell);
            assertFalse(cv.getBooleanValue());

            cell.setCellFormula("iferror(0/0,)<=0");
            fe.clearAllCachedResultValues();
            cv = fe.evaluate(cell);
            assertTrue(cv.getBooleanValue());

            cell.setCellFormula("iferror(0/0,)=0");
            fe.clearAllCachedResultValues();
            cv = fe.evaluate(cell);
            assertTrue(cv.getBooleanValue());

            cell.setCellFormula("iferror(0/0,)>=0");
            fe.clearAllCachedResultValues();
            cv = fe.evaluate(cell);
            assertTrue(cv.getBooleanValue());

            cell.setCellFormula("iferror(0/0,)>0");
            fe.clearAllCachedResultValues();
            cv = fe.evaluate(cell);
            assertFalse(cv.getBooleanValue());

            // invert above for code coverage
            cell.setCellFormula("0<iferror(0/0,)");
            fe.clearAllCachedResultValues();
            cv = fe.evaluate(cell);
            assertFalse(cv.getBooleanValue());

            cell.setCellFormula("0<=iferror(0/0,)");
            fe.clearAllCachedResultValues();
            cv = fe.evaluate(cell);
            assertTrue(cv.getBooleanValue());

            cell.setCellFormula("0=iferror(0/0,)");
            fe.clearAllCachedResultValues();
            cv = fe.evaluate(cell);
            assertTrue(cv.getBooleanValue());

            cell.setCellFormula("0>=iferror(0/0,)");
            fe.clearAllCachedResultValues();
            cv = fe.evaluate(cell);
            assertTrue(cv.getBooleanValue());

            cell.setCellFormula("0>iferror(0/0,)");
            fe.clearAllCachedResultValues();
            cv = fe.evaluate(cell);
            assertFalse(cv.getBooleanValue());
        }
    }

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

            cell.setCellFormula("COUNT(C5,,,,)"); // 4 missing args, C5 is blank
            assertEquals(4.0, fe.evaluate(cell).getNumberValue(), 0.0);

            cell.setCellFormula("COUNTA(C5,,)"); // 2 missing args, C5 is blank
            fe.clearAllCachedResultValues();
            assertEquals(2.0, fe.evaluate(cell).getNumberValue(), 0.0);
        }
    }
}