Somes tests for the record size calculation class... My initial attempt and trying to understand the record size calculation stuff. BTW, I still don't get it. :(
git-svn-id: https://svn.apache.org/repos/asf/jakarta/poi/trunk@352729 13f79535-47bb-0310-9956-ffa450edef68
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Glen Stampoultzis
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/* ====================================================================
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* The Apache Software License, Version 1.1
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*
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* Copyright (c) 2002 The Apache Software Foundation. All rights
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* reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. The end-user documentation included with the redistribution,
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* if any, must include the following acknowledgment:
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* "This product includes software developed by the
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* Apache Software Foundation (http://www.apache.org/)."
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* Alternately, this acknowledgment may appear in the software itself,
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* if and wherever such third-party acknowledgments normally appear.
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* 4. The names "Apache" and "Apache Software Foundation" and
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* derived from this software without prior written permission. For
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* written permission, please contact apache@apache.org.
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* 5. Products derived from this software may not be called "Apache",
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* "Apache POI", nor may "Apache" appear in their name, without
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* prior written permission of the Apache Software Foundation.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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* ====================================================================
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*
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* This software consists of voluntary contributions made by many
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* individuals on behalf of the Apache Software Foundation. For more
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* information on the Apache Software Foundation, please see
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* <http://www.apache.org/>.
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*/
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package org.apache.poi.hssf.record;
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import junit.framework.TestCase;
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import java.util.List;
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import java.util.ArrayList;
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import org.apache.poi.util.BinaryTree;
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import org.apache.poi.util.LittleEndian;
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import org.apache.poi.util.LittleEndianConsts;
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/**
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* Tests that records size calculates correctly.
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*
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* @author Glen Stampoultzis (glens at apache.org)
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*/
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public class TestSSTRecordSizeCalculator
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extends TestCase
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{
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private static final String SMALL_STRING = "Small string";
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private static final int COMPRESSED_PLAIN_STRING_OVERHEAD = 3;
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private List recordLengths;
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private BinaryTree strings;
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private static final int OPTION_FIELD_SIZE = 1;
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public TestSSTRecordSizeCalculator( String s )
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{
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super( s );
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}
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public void testBasic()
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throws Exception
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{
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strings.put(new Integer(0), makeUnicodeString(SMALL_STRING));
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SSTRecordSizeCalculator calculator = new SSTRecordSizeCalculator(new SSTSerializer(recordLengths, strings, 1, 1));
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assertEquals(SSTRecord.SST_RECORD_OVERHEAD + COMPRESSED_PLAIN_STRING_OVERHEAD + SMALL_STRING.length(), calculator.getRecordSize());
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}
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public void testBigStringAcrossUnicode()
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throws Exception
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{
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String bigString = new String(new char[SSTRecord.MAX_DATA_SPACE + 100]);
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strings.put(new Integer(0), makeUnicodeString(bigString));
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SSTRecordSizeCalculator calculator = new SSTRecordSizeCalculator(new SSTSerializer(recordLengths, strings, 1, 1));
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assertEquals(SSTRecord.SST_RECORD_OVERHEAD
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+ COMPRESSED_PLAIN_STRING_OVERHEAD
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+ SSTRecord.MAX_DATA_SPACE
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+ SSTRecord.STD_RECORD_OVERHEAD
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+ OPTION_FIELD_SIZE
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+ 100,
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calculator.getRecordSize());
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}
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public void testPerfectFit()
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throws Exception
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{
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String perfectFit = new String(new char[SSTRecord.MAX_DATA_SPACE - COMPRESSED_PLAIN_STRING_OVERHEAD]);
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strings.put(new Integer(0), makeUnicodeString(perfectFit));
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SSTRecordSizeCalculator calculator = new SSTRecordSizeCalculator(new SSTSerializer(recordLengths, strings, 1, 1));
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assertEquals(SSTRecord.SST_RECORD_OVERHEAD
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+ SSTRecord.MAX_DATA_SPACE,
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calculator.getRecordSize());
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}
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public void testSecondStringStartsOnNewContinuation()
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throws Exception
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{
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String perfectFit = new String(new char[SSTRecord.MAX_DATA_SPACE - COMPRESSED_PLAIN_STRING_OVERHEAD]);
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strings.put(new Integer(0), makeUnicodeString(perfectFit));
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strings.put(new Integer(1), makeUnicodeString(SMALL_STRING));
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SSTRecordSizeCalculator calculator = new SSTRecordSizeCalculator(new SSTSerializer(recordLengths, strings, 1, 1));
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assertEquals(SSTRecord.SST_RECORD_OVERHEAD
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+ SSTRecord.MAX_DATA_SPACE
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// second string
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+ SSTRecord.STD_RECORD_OVERHEAD
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+ COMPRESSED_PLAIN_STRING_OVERHEAD
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+ SMALL_STRING.length(),
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calculator.getRecordSize());
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}
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public void setUp()
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{
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recordLengths = new ArrayList();
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strings = new BinaryTree();
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}
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private UnicodeString makeUnicodeString( String s )
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{
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int length = SSTRecord.STRING_MINIMAL_OVERHEAD + s.length();
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byte[] unicodeStringBuffer = new byte[length];
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LittleEndian.putUShort( unicodeStringBuffer, 0, s.length() );
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int offset = LittleEndianConsts.SHORT_SIZE;
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unicodeStringBuffer[offset++] = 0;
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System.arraycopy( s.getBytes(), 0, unicodeStringBuffer, offset, s.length() );
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return new UnicodeString( UnicodeString.sid, (short) unicodeStringBuffer.length, unicodeStringBuffer );
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}
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}
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