testtextobjectrecord.java

介绍java核心技术的pio编程方法以及基本概念

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

import junit.framework.*;

import java.util.Arrays;
import java.util.List;
import java.io.ByteArrayInputStream;

import org.apache.poi.hssf.usermodel.HSSFRichTextString;

/**
 * Tests that serialization and deserialization of the TextObjectRecord .
 * Test data taken directly from a real Excel file.
 *
 * @author Yegor Kozlov
 */
public class TestTextObjectRecord extends TestCase {

    byte[] data = {(byte)0xB6, 0x01, 0x12, 0x00, 0x12, 0x02, 0x00, 0x00, 0x00, 0x00,
                   0x00, 0x00, 0x00, 0x00, 0x0D, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00,
                   0x00, 0x3C, 0x00, 0x1B, 0x00, 0x01, 0x48, 0x00, 0x65, 0x00, 0x6C,
                   0x00, 0x6C, 0x00, 0x6F, 0x00, 0x2C, 0x00, 0x20, 0x00, 0x57, 0x00,
                   0x6F, 0x00, 0x72, 0x00, 0x6C, 0x00, 0x64, 0x00, 0x21, 0x00, 0x3C,
                   0x00, 0x08, 0x00, 0x0D, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };


    public void testRead()
            throws Exception
    {


        RecordInputStream is = new RecordInputStream(new ByteArrayInputStream(data));
        is.nextRecord();
        TextObjectRecord record = new TextObjectRecord(is);

        assertEquals(TextObjectRecord.sid, record.getSid());
        record.validateSid(TextObjectRecord.sid);
        assertEquals(TextObjectRecord.HORIZONTAL_TEXT_ALIGNMENT_LEFT_ALIGNED, record.getHorizontalTextAlignment());
        assertEquals(TextObjectRecord.VERTICAL_TEXT_ALIGNMENT_TOP, record.getVerticalTextAlignment());
        assertEquals(TextObjectRecord.TEXT_ORIENTATION_NONE, record.getTextOrientation());
        assertEquals(0, record.getReserved7());
        assertEquals("Hello, World!", record.getStr().getString());

    }

    public void testWrite()
    {
        HSSFRichTextString str = new HSSFRichTextString("Hello, World!");

        TextObjectRecord record = new TextObjectRecord();
        int frLength = ( str.numFormattingRuns() + 1 ) * 8;
        record.setFormattingRunLength( (short) frLength );
        record.setTextLength( (short) str.length() );
        record.setStr( str );
        record.setHorizontalTextAlignment( TextObjectRecord.HORIZONTAL_TEXT_ALIGNMENT_LEFT_ALIGNED );
        record.setVerticalTextAlignment( TextObjectRecord.VERTICAL_TEXT_ALIGNMENT_TOP );
        record.setTextLocked( true );
        record.setTextOrientation( TextObjectRecord.TEXT_ORIENTATION_NONE );
        record.setReserved7( 0 );

        byte [] ser = record.serialize();
        assertEquals(ser.length , data.length);

        assertTrue(Arrays.equals(data, ser));

        //read again
        RecordInputStream is = new RecordInputStream(new ByteArrayInputStream(data));
        is.nextRecord();
        record = new TextObjectRecord(is);

    }

    /**
     * Test that TextObjectRecord serializes logs records properly.
     */
    public void testLongRecords() {
        int[] length = {1024, 2048, 4096, 8192, 16384}; //test against strings of different length
        for (int i = 0; i < length.length; i++) {
            StringBuffer buff = new StringBuffer(length[i]);
            for (int j = 0; j < length[i]; j++) {
                buff.append("x");
            }
            HSSFRichTextString str = new HSSFRichTextString(buff.toString());

            TextObjectRecord obj = new TextObjectRecord();
            int frLength = ( str.numFormattingRuns() + 1 ) * 8;
            obj.setFormattingRunLength( (short) frLength );
            obj.setTextLength( (short) str.length() );
            obj.setStr( str );

            byte [] data = obj.serialize();
            RecordInputStream is = new RecordInputStream(new ByteArrayInputStream(data));
            is.nextRecord();
            TextObjectRecord record = new TextObjectRecord(is);
            str = record.getStr();

            assertEquals(buff.length(), str.length());
            assertEquals(buff.toString(), str.getString());
        }

    }

    /**
     * Test cloning
     */
    public void testClone() {
        String text = "Hello, World";
        HSSFRichTextString str = new HSSFRichTextString(text);

        TextObjectRecord obj = new TextObjectRecord();
        int frLength = ( str.numFormattingRuns() + 1 ) * 8;
        obj.setFormattingRunLength( (short) frLength );
        obj.setTextLength( (short) str.length() );
        obj.setReserved1(true);
        obj.setReserved2((short)2);
        obj.setReserved3((short)3);
        obj.setReserved4((short)4);
        obj.setReserved5((short)5);
        obj.setReserved6((short)6);
        obj.setReserved7((short)7);
        obj.setStr( str );


        TextObjectRecord cloned = (TextObjectRecord)obj.clone();
        assertEquals(obj.getReserved2(), cloned.getReserved2());
        assertEquals(obj.getReserved3(), cloned.getReserved3());
        assertEquals(obj.getReserved4(), cloned.getReserved4());
        assertEquals(obj.getReserved5(), cloned.getReserved5());
        assertEquals(obj.getReserved6(), cloned.getReserved6());
        assertEquals(obj.getReserved7(), cloned.getReserved7());
        assertEquals(obj.getRecordSize(), cloned.getRecordSize());
        assertEquals(obj.getOptions(), cloned.getOptions());
        assertEquals(obj.getHorizontalTextAlignment(), cloned.getHorizontalTextAlignment());
        assertEquals(obj.getFormattingRunLength(), cloned.getFormattingRunLength());
        assertEquals(obj.getStr().getString(), cloned.getStr().getString());

        //finally check that the serialized data is the same
        byte[] src = obj.serialize();
        byte[] cln = cloned.serialize();
        assertTrue(Arrays.equals(src, cln));
    }
}