TestUnknownEscherRecord.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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   distributed under the License is distributed on an "AS IS" BASIS,
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   See the License for the specific language governing permissions and
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package org.apache.poi.ddf;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;

import org.apache.poi.util.HexDump;
import org.apache.poi.util.HexRead;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.parallel.Isolated;

import java.util.Arrays;

@Isolated   // this test changes global static MAX_NUMBER_OF_CHILDREN
final class TestUnknownEscherRecord {
    @Test
    void testFillFields() {
        String testData =
                "0F 02 " + // options
                "11 F1 " + // record id
                "00 00 00 00";      // remaining bytes

        UnknownEscherRecord r = new UnknownEscherRecord();
        EscherRecordFactory factory = new DefaultEscherRecordFactory();
        r.fillFields( HexRead.readFromString( testData ), factory );

        assertEquals( 0x020F, r.getOptions() );
        assertEquals( (short) 0xF111, r.getRecordId() );
        assertTrue( r.isContainerRecord() );
        assertEquals( 8, r.getRecordSize() );
        assertEquals( 0, r.getChildRecords().size() );
        assertEquals( 0, r.getData().length );

        testData =
                "00 02 " + // options
                "11 F1 " + // record id
                "04 00 00 00 " + // remaining bytes
                "01 02 03 04";

        r = new UnknownEscherRecord();
        r.fillFields( HexRead.readFromString( testData ), factory );

        assertEquals( 0x0200, r.getOptions() );
        assertEquals( (short) 0xF111, r.getRecordId() );
        assertEquals( 12, r.getRecordSize() );
        assertFalse( r.isContainerRecord() );
        assertEquals( 0, r.getChildRecords().size() );
        assertEquals( 4, r.getData().length );
        assertEquals( 1, r.getData()[0] );
        assertEquals( 2, r.getData()[1] );
        assertEquals( 3, r.getData()[2] );
        assertEquals( 4, r.getData()[3] );

        testData =
                "0F 02 " + // options
                "11 F1 " + // record id
                "08 00 00 00 " + // remaining bytes
                "00 02 " + // options
                "FF FF " + // record id
                "00 00 00 00";      // remaining bytes

        r = new UnknownEscherRecord();
        r.fillFields( HexRead.readFromString( testData ), factory );

        assertEquals( 0x020F, r.getOptions() );
        assertEquals( (short) 0xF111, r.getRecordId() );
        assertEquals( 8, r.getRecordSize() );
        assertTrue( r.isContainerRecord() );
        assertEquals( 1, r.getChildRecords().size() );
        assertEquals( (short) 0xFFFF, r.getChild( 0 ).getRecordId() );

        //Add by Zhang Zhang test error situation when remaining bytes > avalible bytes
        testData =
            "00 02 " + // options
            "11 F1 " + // record id
            "05 00 00 00 " + // remaining bytes
            "01 02 03 04";

        r = new UnknownEscherRecord();
        r.fillFields( HexRead.readFromString( testData ), factory );

        assertEquals( 0x0200, r.getOptions() );
        assertEquals( (short) 0xF111, r.getRecordId() );
        assertEquals( 12, r.getRecordSize() );
        assertFalse( r.isContainerRecord() );
        assertEquals( 0, r.getChildRecords().size() );
        assertEquals( 4, r.getData().length );
        assertEquals( 1, r.getData()[0] );
        assertEquals( 2, r.getData()[1] );
        assertEquals( 3, r.getData()[2] );
        assertEquals( 4, r.getData()[3] );

        testData =
            "0F 02 " + // options
            "11 F1 " + // record id
            "09 00 00 00 " + // remaining bytes
            "00 02 " + // options
            "FF FF " + // record id
            "00 00 00 00";      // remaining bytes

        r = new UnknownEscherRecord();
        r.fillFields( HexRead.readFromString( testData ), factory );

        assertEquals( 0x020F, r.getOptions() );
        assertEquals( (short) 0xF111, r.getRecordId() );
        assertEquals( 8, r.getRecordSize() );
        assertTrue( r.isContainerRecord() );
        assertEquals( 1, r.getChildRecords().size() );
        assertEquals( (short) 0xFFFF, r.getChild( 0 ).getRecordId() );
    }

    @Test
    void testSerialize() {
        UnknownEscherRecord r = new UnknownEscherRecord();
        r.setOptions( (short) 0x1234 );
        r.setRecordId( (short) 0xF112 );
        byte[] data = new byte[8];
        r.serialize( 0, data, new NullEscherSerializationListener() );

        assertEquals( "[34, 12, 12, F1, 00, 00, 00, 00]", HexDump.toHex( data ) );

        EscherRecord childRecord = new UnknownEscherRecord();
        childRecord.setOptions( (short) 0x9999 );
        childRecord.setRecordId( (short) 0xFF01 );
        r.addChildRecord( childRecord );
        r.setOptions( (short) 0x123F );
        data = new byte[16];
        r.serialize( 0, data, new NullEscherSerializationListener() );

        assertEquals( "[3F, 12, 12, F1, 08, 00, 00, 00, 99, 99, 01, FF, 00, 00, 00, 00]", HexDump.toHex( data ) );
    }

    @Test
    void testToString() {
        UnknownEscherRecord r = new UnknownEscherRecord();
        r.setOptions( (short) 0x1234 );
        r.setRecordId( (short) 0xF112 );
        byte[] data = new byte[8];
        r.serialize( 0, data, new NullEscherSerializationListener() );
        String expected =
            "{   /* UNKNOWN */\n" +
            "\t  \"recordId\": -3822 /* 0xf112 */\n" +
            "\t, \"version\": 4\n" +
            "\t, \"instance\": 291 /* 0x0123 */\n" +
            "\t, \"options\": 4660 /* 0x1234 */\n" +
            "\t, \"recordSize\": 8\n" +
            "\t, \"data\": \"\"\n" +
            "}";
        expected = expected.replace("\n", System.lineSeparator());
        assertEquals(expected, r.toString() );
    }

    @Test
    void testTooManyChildren() {
        UnknownEscherRecord ecr = new UnknownEscherRecord();

        int before = EscherRecord.getMaxNumberOfChildren();
        try {
            EscherRecord.setMaxNumberOfChildren(2);

            ecr.addChildRecord(new EscherDgRecord());
            ecr.addChildRecord(new EscherDgRecord());
            assertThrows(IllegalStateException.class,
                    () -> ecr.addChildRecord(new EscherDgRecord()));

            ecr.setChildRecords(Arrays.asList(new EscherDgRecord(), new EscherDgRecord()));
            assertThrows(IllegalStateException.class,
                    () -> ecr.setChildRecords(Arrays.asList(new EscherDgRecord(), new EscherDgRecord(), new EscherDgRecord())));
        } finally {
            EscherRecord.setMaxNumberOfChildren(before);
        }
    }
}