trunk/src/testcases/org/apache/poi/ss/usermodel/TestFractionFormat.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.ss.usermodel;

import static org.junit.Assert.assertEquals;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStreamReader;

import org.apache.poi.hssf.HSSFTestDataSamples;
import org.apache.poi.ss.usermodel.Row.MissingCellPolicy;
import org.apache.poi.util.LocaleUtil;
import org.junit.Test;

/**
 * Tests for the Fraction Formatting part of DataFormatter.
 * Largely taken from bug #54686
 */
public final class TestFractionFormat {
    @Test
    public void testSingle() throws Exception {
        FractionFormat f = new FractionFormat("", "##");
        double val = 321.321;
        String ret = f.format(val);
        assertEquals("26027/81", ret);
    }
     
    @Test
    public void testTruthFile() throws Exception {
        File truthFile = HSSFTestDataSamples.getSampleFile("54686_fraction_formats.txt");
        BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(truthFile), LocaleUtil.CHARSET_1252));
        Workbook wb = HSSFTestDataSamples.openSampleWorkbook("54686_fraction_formats.xls");
        Sheet sheet = wb.getSheetAt(0);
        DataFormatter formatter = new DataFormatter();
        FormulaEvaluator evaluator = wb.getCreationHelper().createFormulaEvaluator();

        // Skip over the header row
        String truthLine = reader.readLine();
        String[] headers = truthLine.split("\t");
        truthLine = reader.readLine();

        for (int i = 1; i < sheet.getLastRowNum() && truthLine != null; i++){
            Row r = sheet.getRow(i);
            String[] truths = truthLine.split("\t");
            // Intentionally ignore the last column (tika-1132), for now
            for (short j = 3; j < 12; j++){
                Cell cell = r.getCell(j, MissingCellPolicy.CREATE_NULL_AS_BLANK);
                String formatted = clean(formatter.formatCellValue(cell, evaluator));
                if (truths.length <= j){
                    continue;
                }

                String truth = clean(truths[j]);
                String testKey = truths[0]+":"+truths[1]+":"+headers[j];
                assertEquals(testKey, truth, formatted);
            }
            truthLine = reader.readLine();
        }
        wb.close();
        reader.close();
    }

    private String clean(String s){
        s = s.trim().replaceAll(" +",  " ").replaceAll("- +", "-");
        return s;
    }
}