/* ====================================================================
   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.
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package org.apache.poi.ss.formula.atp;

import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellType;
import org.apache.poi.ss.usermodel.FormulaEvaluator;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.util.CellReference;
import org.junit.jupiter.api.Test;

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

/**
 * Testcase for 'Analysis Toolpak' function IFS()
 *
 * @author Pieter Degraeuwe
 */
public class TestIfs  {

    /**
     * =IFS(A1="A", "Value for A" , A1="B", "Value for B")
     */
    @Test
    public void testEvaluate() {
        Workbook wb = new HSSFWorkbook();
        Sheet sh = wb.createSheet();
        Row row1 = sh.createRow(0);

        // Create cells
        row1.createCell(0, CellType.STRING);

        // Create references
        CellReference a1Ref = new CellReference("A1");

        // Set values
        final Cell cellA1 = sh.getRow(a1Ref.getRow()).getCell(a1Ref.getCol());


        Cell cell1 = row1.createCell(1);
        cell1.setCellFormula("IFS(A1=\"A\", \"Value for A\", A1=\"B\",\"Value for B\")");

        FormulaEvaluator evaluator = wb.getCreationHelper().createFormulaEvaluator();

        cellA1.setCellValue("A");
        assertEquals(CellType.STRING, evaluator.evaluate(cell1).getCellType());
        assertEquals("Value for A", evaluator.evaluate(cell1).getStringValue(),
                "IFS should return 'Value for B'");

        cellA1.setCellValue("B");
        evaluator.clearAllCachedResultValues();
        assertEquals(CellType.STRING, evaluator.evaluate(cell1).getCellType());
        assertEquals("Value for B", evaluator.evaluate(cell1).getStringValue(),
                "IFS should return 'Value for B'");
    }

    /**
     * where D1 contains a string "A"
     * =IFS(A1=D1, "Value for A" , A1="B", "Value for B")
     */
    @Test
    public  void testEvaluateForReferenced() {
        Workbook wb = new HSSFWorkbook();
        Sheet sh = wb.createSheet();
        Row row1 = sh.createRow(0);

        // Create cells
//        row1.createCell(0, CellType.STRING);

        // Create references
        CellReference a1Ref = new CellReference("A1");
        CellReference d1Ref = new CellReference("D1");

        // Set values
        final Cell cellA1 = sh.getRow(a1Ref.getRow()).createCell(a1Ref.getCol());
        cellA1.setCellFormula("D1");

        final Cell cellD1 = sh.getRow(d1Ref.getRow()).createCell(d1Ref.getCol());
        cellD1.setCellValue("A");


        Cell cell1 = row1.createCell(1);
        cell1.setCellFormula("IFS(A1=\"A\", \"Value for A\", A1=\"B\",\"Value for B\")");

        FormulaEvaluator evaluator = wb.getCreationHelper().createFormulaEvaluator();

        cellD1.setCellValue("A");
        assertEquals(CellType.STRING, evaluator.evaluate(cell1).getCellType());
        assertEquals( "Value for A", evaluator.evaluate(cell1).getStringValue(),
                "IFS should return 'Value for B'");

        cellD1.setCellValue("B");
        evaluator.clearAllCachedResultValues();
        assertEquals(CellType.STRING, evaluator.evaluate(cell1).getCellType());
        assertEquals("Value for B", evaluator.evaluate(cell1).getStringValue(),
                "IFS should return 'Value for B'");

    }

}
