trunk/src/ooxml/testcases/org/apache/poi/xssf/usermodel/TestXSSFDataFormat.java

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   this work for additional information regarding copyright ownership.
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package org.apache.poi.xssf.usermodel;

import static org.junit.Assert.*;

import java.io.IOException;

import org.apache.poi.ss.usermodel.BaseTestDataFormat;
import org.apache.poi.ss.usermodel.BuiltinFormats;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.DataFormat;
import org.apache.poi.xssf.XSSFITestDataProvider;
import org.apache.poi.xssf.XSSFTestDataSamples;
import org.junit.Test;

/**
 * Tests for {@link XSSFDataFormat}
 */
public final class TestXSSFDataFormat extends BaseTestDataFormat {

	public TestXSSFDataFormat() {
		super(XSSFITestDataProvider.instance);
	}

    /**
     * [Bug 49928] formatCellValue returns incorrect value for \u00a3 formatted cells
     */
	@Override
    @Test
    public void test49928() throws IOException {
        XSSFWorkbook wb = XSSFTestDataSamples.openSampleWorkbook("49928.xlsx");
        doTest49928Core(wb);
        
        DataFormat dataFormat = wb.createDataFormat();

        // As of 2015-12-27, there is no way to override a built-in number format with POI XSSFWorkbook
        // 49928.xlsx has been saved with a poundFmt that overrides the default value (dollar)
        short poundFmtIdx = wb.getSheetAt(0).getRow(0).getCell(0).getCellStyle().getDataFormat();
        assertEquals(poundFmtIdx, dataFormat.getFormat(poundFmt));

        // now create a custom format with Pound (\u00a3)
        
        String customFmt = "\u00a3##.00[Yellow]";
        assertNotBuiltInFormat(customFmt);
        short customFmtIdx = dataFormat.getFormat(customFmt);
        assertTrue(customFmtIdx >= BuiltinFormats.FIRST_USER_DEFINED_FORMAT_INDEX);
        assertEquals(customFmt, dataFormat.getFormat(customFmtIdx));
        
        wb.close();
    }
    
    /**
     * [Bug 58532] Handle formats that go numnum, numK, numM etc 
     */
	@Override
    @Test
    public void test58532() throws IOException {
        XSSFWorkbook wb = XSSFTestDataSamples.openSampleWorkbook("FormatKM.xlsx");
        doTest58532Core(wb);
        wb.close();
    }
    
    /**
     * [Bug 58778] Built-in number formats can be overridden with XSSFDataFormat.putFormat(int id, String fmt)
     */
	@Test
    public void test58778() throws IOException {
        XSSFWorkbook wb1 = new XSSFWorkbook();
        Cell cell = wb1.createSheet("bug58778").createRow(0).createCell(0);
        cell.setCellValue(5.25);
        CellStyle style = wb1.createCellStyle();
        
        XSSFDataFormat dataFormat = wb1.createDataFormat();
        
        short poundFmtIdx = 6;
        dataFormat.putFormat(poundFmtIdx, poundFmt);
        style.setDataFormat(poundFmtIdx);
        cell.setCellStyle(style);
        // Cell should appear as "<poundsymbol>5"
        
        XSSFWorkbook wb2 = XSSFTestDataSamples.writeOutCloseAndReadBack(wb1);
        cell = wb2.getSheet("bug58778").getRow(0).getCell(0);
        assertEquals(5.25, cell.getNumericCellValue(), 0);
        
        style = cell.getCellStyle();
        assertEquals(poundFmt, style.getDataFormatString());
        assertEquals(poundFmtIdx, style.getDataFormat());
        
        // manually check the file to make sure the cell is rendered as "<poundsymbol>5"
        // Verified with LibreOffice 4.2.8.2 on 2015-12-28
        wb2.close();
        wb1.close();
    }
}