src/testcases/org/apache/poi/hssf/HSSFITestDataProvider.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
   (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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package org.apache.poi.hssf;

import org.apache.poi.POIDataSamples;
import org.apache.poi.hssf.usermodel.HSSFFormulaEvaluator;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.ITestDataProvider;
import org.apache.poi.ss.SpreadsheetVersion;
import org.apache.poi.ss.usermodel.FormulaEvaluator;
import org.apache.poi.ss.usermodel.Workbook;

/**
 * @author Yegor Kozlov
 */
public final class HSSFITestDataProvider implements ITestDataProvider {
    public static final HSSFITestDataProvider instance = new HSSFITestDataProvider();

    private HSSFITestDataProvider(){
        // enforce singleton
    }
    
    public HSSFWorkbook openSampleWorkbook(String sampleFileName) {
        return HSSFTestDataSamples.openSampleWorkbook(sampleFileName);
    }
    
    public HSSFWorkbook writeOutAndReadBack(Workbook original) {
        if(!(original instanceof HSSFWorkbook)) {
            throw new IllegalArgumentException("Expected an instance of HSSFWorkbook");
        }
        return HSSFTestDataSamples.writeOutAndReadBack((HSSFWorkbook)original);
    }
    
    public HSSFWorkbook createWorkbook(){
        return new HSSFWorkbook();
    }
    
    public FormulaEvaluator createFormulaEvaluator(Workbook wb) {
        return new HSSFFormulaEvaluator((HSSFWorkbook) wb);
    }

    public byte[] getTestDataFileContent(String fileName) {
        return POIDataSamples.getSpreadSheetInstance().readFile(fileName);
    }
    
    public SpreadsheetVersion getSpreadsheetVersion(){
        return SpreadsheetVersion.EXCEL97;
    }
    
    public String getStandardFileNameExtension() {
        return "xls";
    }
}