testobjrecord.java

来自「EXCEL read and write」· Java 代码 · 共 117 行

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package org.apache.poi.hssf.record;

import java.util.Arrays;
import java.util.List;

import junit.framework.AssertionFailedError;
import junit.framework.TestCase;

/**
 * Tests the serialization and deserialization of the ObjRecord class works correctly.
 * Test data taken directly from a real Excel file.
 *
 * @author Yegor Kozlov
 */
public final class TestObjRecord extends TestCase {
    /**
     * OBJ record data containing two sub-records.
     * The data taken directly from a real Excel file.
     *
     * [OBJ]
     *     [ftCmo]
     *     [ftEnd]
     */
    private static final byte[] recdata = {
        0x15, 0x00, 0x12, 0x00, 0x06, 0x00, 0x01, 0x00, 0x11, 0x60,
        (byte)0xF4, 0x02, 0x41, 0x01, 0x14, 0x10, 0x1F, 0x02, 0x00, 0x00,
        0x00, 0x00, 0x00, 0x00, 0x00, 0x00
        // TODO - this data seems to require two extra bytes padding. not sure where original file is.
        // it's not bug 38607 attachment 17639
    };

    private static final byte[] recdataNeedingPadding = {
    	21, 0, 18, 0, 0, 0, 1, 0, 17, 96, 0, 0, 0, 0, 56, 111, -52, 3, 0, 0, 0, 0, 6, 0, 2, 0, 0, 0, 0, 0, 0, 0
    };

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

        assertEquals(28, record.getRecordSize() - 4);

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

    }

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

        byte [] recordBytes = record.serialize();
        assertEquals(28, recordBytes.length - 4);
        byte[] subData = new byte[recdata.length];
        System.arraycopy(recordBytes, 4, subData, 0, subData.length);
        assertTrue(Arrays.equals(recdata, subData));
    }

    public void testConstruct() {
        ObjRecord record = new ObjRecord();
        CommonObjectDataSubRecord ftCmo = new CommonObjectDataSubRecord();
        ftCmo.setObjectType( CommonObjectDataSubRecord.OBJECT_TYPE_COMMENT);
        ftCmo.setObjectId( (short) 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 subrecords = record.getSubRecords();
        assertEquals( 2, subrecords.size() );
        assertTrue( subrecords.get(0) instanceof CommonObjectDataSubRecord);
        assertTrue( subrecords.get(1) instanceof EndSubRecord );
    }
    
    public void testReadWriteWithPadding_bug45133() {
        ObjRecord record = new ObjRecord(TestcaseRecordInputStream.create(ObjRecord.sid, recdataNeedingPadding));
        
        if (record.getRecordSize() == 34) {
        	throw new AssertionFailedError("Identified bug 45133");
        }

        assertEquals(36, record.getRecordSize());

        List 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());
    }
}