TestFormulaRecord.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.assertFalse;
import static org.junit.jupiter.api.Assertions.assertSame;
import static org.junit.jupiter.api.Assertions.assertTrue;

import org.apache.poi.ss.formula.ptg.AttrPtg;
import org.apache.poi.ss.formula.ptg.FuncVarPtg;
import org.apache.poi.ss.formula.ptg.IntPtg;
import org.apache.poi.ss.formula.ptg.Ptg;
import org.apache.poi.ss.formula.ptg.RefPtg;
import org.apache.poi.ss.usermodel.CellType;
import org.apache.poi.ss.usermodel.FormulaError;
import org.junit.jupiter.api.Test;

/**
 * Tests for {@link FormulaRecord}
 */
final class TestFormulaRecord {

    @Test
    void testCreateFormulaRecord () {
        FormulaRecord record = new FormulaRecord();
        record.setColumn((short)0);
        record.setRow(1);
        record.setXFIndex((short)4);

        assertEquals(0,record.getColumn());
        assertEquals(1, record.getRow());
        assertEquals(4,record.getXFIndex());
    }

    /**
     * Make sure a NAN value is preserved
     * This formula record is a representation of =1/0 at row 0, column 0
     */
    @Test
    void testCheckNanPreserve() {
        byte[] formulaByte = {
            0, 0, 0, 0,
            0x0F, 0x00,

            // 8 bytes cached number is a 'special value' in this case
            0x02, // special cached value type 'error'
            0x00,
            FormulaError.DIV0.getCode(),
            0x00,
            0x00,
            0x00,
            (byte)0xFF,
            (byte)0xFF,

            0x00,
            0x00,
            0x00,
            0x00,

            (byte)0xE0, //18
            (byte)0xFC,
            // Ptgs
            0x07, 0x00, // encoded length
            0x1E, 0x01, 0x00, // IntPtg(1)
            0x1E, 0x00, 0x00, // IntPtg(0)
            0x06, // DividePtg

        };

        FormulaRecord record = new FormulaRecord(TestcaseRecordInputStream.create(FormulaRecord.sid, formulaByte));
        assertEquals(0, record.getRow(), "Row");
        assertEquals(0, record.getColumn(), "Column");
        //noinspection deprecation
        assertEquals(CellType.ERROR, record.getCachedResultType());

        byte[] output = record.serialize();
        // includes sid+recordlength
        assertEquals(33, output.length, "Output size");

        for (int i = 5; i < 13;i++) {
            assertEquals(formulaByte[i], output[i+4], "FormulaByte NaN doesn't match");
        }
    }

    /**
     * Tests to see if the shared formula cells properly reserialize the expPtg
     */
    @Test
    void testExpFormula() {
        byte[] formulaByte = new byte[27];

        formulaByte[4] =(byte)0x0F;
        formulaByte[14]=(byte)0x08;
        formulaByte[18]=(byte)0xE0;
        formulaByte[19]=(byte)0xFD;
        formulaByte[20]=(byte)0x05;
        formulaByte[22]=(byte)0x01;
        FormulaRecord record = new FormulaRecord(TestcaseRecordInputStream.create(FormulaRecord.sid, formulaByte));
        assertEquals(0, record.getRow(), "Row");
        assertEquals(0, record.getColumn(), "Column");
        byte[] output = record.serialize();
        // includes sid+recordlength
        assertEquals(31, output.length, "Output size");
        assertEquals(1, output[26], "Offset 22");
    }

    @Test
    void testWithConcat() {
        // =CHOOSE(2,A2,A3,A4)
        byte[] data = {
                1, 0, 1, 0, 15, 0, 0, 0, 0, 0, 0, 0, 57,
                64, 0, 0, 12, 0, 12, -4, 46, 0,
                30, 2, 0,   // Int - 2
                25, 4, 3, 0, // Attr
                    8, 0, 17, 0, 26, 0, // jumpTable
                    35, 0, // chooseOffset
                36, 1, 0, 0, -64, // Ref - A2
                25, 8, 21, 0, // Attr
                36, 2, 0, 0, -64, // Ref - A3
                25, 8, 12, 0, // Attr
                36, 3, 0, 0, -64, // Ref - A4
                25, 8, 3, 0,  // Attr
                66, 4, 100, 0 // CHOOSE
        };
        RecordInputStream inp = TestcaseRecordInputStream.create(FormatRecord.sid, data);

        FormulaRecord fr = new FormulaRecord(inp);

        Ptg[] ptgs = fr.getParsedExpression();
        assertEquals(9, ptgs.length);
        assertSame(IntPtg.class,     ptgs[0].getClass());
        assertSame(AttrPtg.class,   ptgs[1].getClass());
        assertSame(RefPtg.class, ptgs[2].getClass());
        assertSame(AttrPtg.class,   ptgs[3].getClass());
        assertSame(RefPtg.class, ptgs[4].getClass());
        assertSame(AttrPtg.class,   ptgs[5].getClass());
        assertSame(RefPtg.class, ptgs[6].getClass());
        assertSame(AttrPtg.class,   ptgs[7].getClass());
        assertSame(FuncVarPtg.class,   ptgs[8].getClass());

        FuncVarPtg choose = (FuncVarPtg)ptgs[8];
        assertEquals("CHOOSE", choose.getName());
    }

    @Test
    void testReserialize() {
        FormulaRecord formulaRecord = new FormulaRecord();
        formulaRecord.setRow(1);
        formulaRecord.setColumn((short) 1);
        formulaRecord.setParsedExpression(new Ptg[] { new RefPtg("B$5"), });
        formulaRecord.setValue(3.3);
        byte[] ser = formulaRecord.serialize();
        assertEquals(31, ser.length);

        RecordInputStream in = TestcaseRecordInputStream.create(ser);
        FormulaRecord fr2 = new FormulaRecord(in);
        assertEquals(3.3, fr2.getValue(), 0.0);
        Ptg[] ptgs = fr2.getParsedExpression();
        assertEquals(1, ptgs.length);
        RefPtg rp = (RefPtg) ptgs[0];
        assertEquals("B$5", rp.toFormulaString());
    }

    /**
     * Bug noticed while fixing 46479.  Operands of conditional operator ( ? : ) were swapped
     * inside {@link FormulaRecord}
     */
    @Test
    void testCachedValue_bug46479() {
        FormulaRecord fr0 = new FormulaRecord();
        FormulaRecord fr1 = new FormulaRecord();
        // test some other cached value types
        fr0.setValue(3.5);
        assertEquals(3.5, fr0.getValue(), 0.0);
        fr0.setCachedResultErrorCode(FormulaError.REF.getCode());
        assertEquals(FormulaError.REF.getCode(), fr0.getCachedErrorValue());

        fr0.setCachedResultBoolean(false);
        fr1.setCachedResultBoolean(true);
        assertFalse(fr0.getCachedBooleanValue() && !fr1.getCachedBooleanValue(), "Identified bug 46479c");
        assertFalse(fr0.getCachedBooleanValue());
        assertTrue(fr1.getCachedBooleanValue());
    }
}