poi/src/test/java/org/apache/poi/hssf/usermodel/TestUnicodeWorkbook.java

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package org.apache.poi.hssf.usermodel;

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

import java.io.IOException;

import org.apache.poi.hssf.HSSFTestDataSamples;
import org.junit.jupiter.api.Test;

final class TestUnicodeWorkbook {

    /**
     *  Tests Bug38230
     *  That a Umlat is written  and then read back.
     *  It should have been written as a compressed unicode.
     */
    @Test
    void testUmlatReadWrite() throws IOException {
        try (HSSFWorkbook wb1 = new HSSFWorkbook()) {

            //Create a unicode sheet name (euro symbol)
            HSSFSheet s = wb1.createSheet("test");

            HSSFRow r = s.createRow(0);
            HSSFCell c = r.createCell(1);
            c.setCellValue(new HSSFRichTextString("\u00e4"));

            //Confirm that the sring will be compressed
            assertEquals(c.getRichStringCellValue().getUnicodeString().getOptionFlags(), 0);

            try (HSSFWorkbook wb = HSSFTestDataSamples.writeOutAndReadBack(wb1)) {

                //Test the sheetname
                s = wb.getSheet("test");
                assertNotNull(s);

                c = r.getCell(1);
                assertEquals(c.getRichStringCellValue().getString(), "\u00e4");
            }
        }
    }
}