log4j/src/testcases/org/apache/poi/hssf/record/TestArrayRecord.java

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   this work for additional information regarding copyright ownership.
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package org.apache.poi.hssf.record;

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

import org.apache.poi.hssf.HSSFTestDataSamples;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.util.CellRangeAddress8Bit;
import org.apache.poi.ss.formula.Formula;
import org.apache.poi.ss.formula.FormulaParser;
import org.apache.poi.ss.formula.FormulaRenderer;
import org.apache.poi.ss.formula.FormulaType;
import org.apache.poi.ss.formula.ptg.Ptg;
import org.apache.poi.util.HexDump;
import org.apache.poi.util.HexRead;
import org.junit.jupiter.api.Test;

final class TestArrayRecord {

    @Test
    void testRead() {
        String hex =
                "21 02 25 00 01 00 01 00 01 01 00 00 00 00 00 00 " +
                "17 00 65 00 00 01 00 02 C0 02 C0 65 00 00 01 00 " +
                "03 C0 03 C0 04 62 01 07 00";
        byte[] data = HexRead.readFromString(hex);
        RecordInputStream in = TestcaseRecordInputStream.create(data);
        ArrayRecord r1 = new ArrayRecord(in);
        CellRangeAddress8Bit range = r1.getRange();
        assertEquals(1, range.getFirstColumn());
        assertEquals(1, range.getLastColumn());
        assertEquals(1, range.getFirstRow());
        assertEquals(1, range.getLastRow());

        Ptg[] ptg = r1.getFormulaTokens();
        assertEquals("MAX(C1:C2-D1:D2)", FormulaRenderer.toFormulaString(null, ptg));

        //construct a new ArrayRecord with the same contents as r1
        Ptg[] fmlaPtg = FormulaParser.parse("MAX(C1:C2-D1:D2)", null, FormulaType.ARRAY, 0);
        ArrayRecord r2 = new ArrayRecord(Formula.create(fmlaPtg), new CellRangeAddress8Bit(1, 1, 1, 1));
        byte[] ser = r2.serialize();
        //serialize and check that the data is the same as in r1
        assertEquals(HexDump.toHex(data), HexDump.toHex(ser));
    }

    @Test
    void testBug57231() {
        HSSFWorkbook wb = HSSFTestDataSamples
                .openSampleWorkbook("57231_MixedGasReport.xls");
        HSSFSheet sheet = wb.getSheet("master");

        HSSFSheet newSheet = wb.cloneSheet(wb.getSheetIndex(sheet));
        int idx = wb.getSheetIndex(newSheet);
        wb.setSheetName(idx, "newName");

        // Write the output to a file
        HSSFWorkbook wbBack = HSSFTestDataSamples.writeOutAndReadBack(wb);
        assertNotNull(wbBack);

        assertNotNull(wbBack.getSheet("master"));
        assertNotNull(wbBack.getSheet("newName"));
    }
}