TestObjRecord.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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package org.apache.poi.hssf.record;

import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

import java.util.List;

import org.apache.poi.util.HexRead;
import org.junit.Test;

/**
 * Tests the serialization and deserialization of the ObjRecord class works correctly.
 * Test data taken directly from a real Excel file.
 */
public final class TestObjRecord {
    /**
     * OBJ record data containing two sub-records.
     * The data taken directly from a real Excel file.
     *
     * [OBJ]
     *     [ftCmo]
     *     [ftEnd]
     */
    private static final byte[] recdata = HexRead.readFromString(""
            + "15 00 12 00 06 00 01 00 11 60 "
            + "F4 02 41 01 14 10 1F 02 00 00 "
            +"00 00 00 00 00 00"
            // TODO - this data seems to require two extra bytes padding. not sure where original file is.
            // it's not bug 38607 attachment 17639
    );

    /**
     * Hex dump from
     * offset 0x2072 in att 22076 of bug 45133
     */
    private static final byte[] recdataNeedingPadding = HexRead.readFromString(""
            + "5D 00 20 00"
            + "15 00 12 00 00 00 01 00 11 60 00 00 00 00 38 6F CC 03 00 00 00 00 06 00 02 00 00 00 00 00 00 00"
    );

    @Test
    public void testLoad() {
        ObjRecord record = new ObjRecord(TestcaseRecordInputStream.create(ObjRecord.sid, recdata));

        assertEquals(26, record.getRecordSize() - 4);

        List<SubRecord> subrecords = record.getSubRecords();
        assertEquals(2, subrecords.size() );
        assertTrue(subrecords.get(0) instanceof CommonObjectDataSubRecord);
        assertTrue(subrecords.get(1) instanceof EndSubRecord );

    }

    @Test
    public void testStore() {
        ObjRecord record = new ObjRecord(TestcaseRecordInputStream.create(ObjRecord.sid, recdata));

        byte [] recordBytes = record.serialize();
        assertEquals(26, recordBytes.length - 4);
        byte[] subData = new byte[recdata.length];
        System.arraycopy(recordBytes, 4, subData, 0, subData.length);
        assertArrayEquals(recdata, subData);
    }

    @Test
    public void testConstruct() {
        ObjRecord record = new ObjRecord();
        CommonObjectDataSubRecord ftCmo = new CommonObjectDataSubRecord();
        ftCmo.setObjectType( CommonObjectDataSubRecord.OBJECT_TYPE_COMMENT);
        ftCmo.setObjectId( 1024 );
        ftCmo.setLocked( true );
        ftCmo.setPrintable( true );
        ftCmo.setAutofill( true );
        ftCmo.setAutoline( true );
        record.addSubRecord(ftCmo);
        EndSubRecord ftEnd = new EndSubRecord();
        record.addSubRecord(ftEnd);

        //serialize and read again
        byte [] recordBytes = record.serialize();
        //cut off the record header
        byte [] bytes = new byte[recordBytes.length-4];
        System.arraycopy(recordBytes, 4, bytes, 0, bytes.length);

        record = new ObjRecord(TestcaseRecordInputStream.create(ObjRecord.sid, bytes));
        List<SubRecord> subrecords = record.getSubRecords();
        assertEquals( 2, subrecords.size() );
        assertTrue( subrecords.get(0) instanceof CommonObjectDataSubRecord);
        assertTrue( subrecords.get(1) instanceof EndSubRecord );
    }
    
    @Test
    public void testReadWriteWithPadding_bug45133() {
        ObjRecord record = new ObjRecord(TestcaseRecordInputStream.create(recdataNeedingPadding));
        
        if (record.getRecordSize() == 34) {
            fail("Identified bug 45133");
        }

        assertEquals(36, record.getRecordSize());

        List<SubRecord> subrecords = record.getSubRecords();
        assertEquals(3, subrecords.size() );
        assertEquals(CommonObjectDataSubRecord.class, subrecords.get(0).getClass());
        assertEquals(GroupMarkerSubRecord.class, subrecords.get(1).getClass());
        assertEquals(EndSubRecord.class, subrecords.get(2).getClass());
    }
    
    /**
     * Check that ObjRecord tolerates and preserves padding to a 4-byte boundary
     * (normally padding is to a 2-byte boundary).
     */
    @Test
    public void test4BytePadding() {
        // actual data from file saved by Excel 2007
        byte[] data = HexRead.readFromString(""
                + "15 00 12 00  1E 00 01 00  11 60 B4 6D  3C 01 C4 06 "
                + "49 06 00 00  00 00 00 00  00 00 00 00");
        // this data seems to have 2 extra bytes of padding more than usual
        // the total may have been padded to the nearest quad-byte length
        RecordInputStream in = TestcaseRecordInputStream.create(ObjRecord.sid, data);
        // check read OK
        ObjRecord record = new ObjRecord(in);
        // check that it re-serializes to the same data
        byte[] ser = record.serialize();
        TestcaseRecordInputStream.confirmRecordEncoding(ObjRecord.sid, data, ser);
    }
}