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TestSSTRecordSizeCalculator.java API Doc Apache Poi 3.0.1 5473 Mon Jan 01 12:39:46 GMT 2007 org.apache.poi.hssf.record

TestSSTRecordSizeCalculator

java.lang.Object
- junit.framework.Assert
  - junit.framework.TestCase

public class TestSSTRecordSizeCalculator extends TestCase

Tests that records size calculates correctly.

author: Glen Stampoultzis (glens at apache.org)

Fields Summary
private static final String
SMALL_STRING
private static final int
COMPRESSED_PLAIN_STRING_OVERHEAD
private IntMapper
strings
private static final int
OPTION_FIELD_SIZE
Constructors Summary
public TestSSTRecordSizeCalculator(String s)
super( s );
Methods Summary
private org.apache.poi.hssf.record.UnicodeString makeUnicodeString(java.lang.String s)
UnicodeString st = new UnicodeString(s); st.setOptionFlags((byte)0); return st;
public void setUp()
strings = new IntMapper();
public void testBasic()
strings.add(makeUnicodeString(SMALL_STRING)); SSTRecordSizeCalculator calculator = new SSTRecordSizeCalculator(strings); assertEquals(SSTRecord.SST_RECORD_OVERHEAD + COMPRESSED_PLAIN_STRING_OVERHEAD + SMALL_STRING.length(), calculator.getRecordSize());
public void testBigStringAcrossUnicode()
String bigString = new String(new char[SSTRecord.MAX_DATA_SPACE + 100]); strings.add(makeUnicodeString(bigString)); SSTRecordSizeCalculator calculator = new SSTRecordSizeCalculator(strings); assertEquals(SSTRecord.SST_RECORD_OVERHEAD + COMPRESSED_PLAIN_STRING_OVERHEAD + SSTRecord.MAX_DATA_SPACE + SSTRecord.STD_RECORD_OVERHEAD + OPTION_FIELD_SIZE + 100, calculator.getRecordSize());
public void testHeaderCrossesNormalContinuePoint()
String almostPerfectFit = new String(new char[SSTRecord.MAX_DATA_SPACE - COMPRESSED_PLAIN_STRING_OVERHEAD - 2]); strings.add(makeUnicodeString(almostPerfectFit)); String oneCharString = new String(new char[1]); strings.add(makeUnicodeString(oneCharString)); SSTRecordSizeCalculator calculator = new SSTRecordSizeCalculator(strings); assertEquals(SSTRecord.SST_RECORD_OVERHEAD + COMPRESSED_PLAIN_STRING_OVERHEAD + almostPerfectFit.length() // second string + SSTRecord.STD_RECORD_OVERHEAD + COMPRESSED_PLAIN_STRING_OVERHEAD + oneCharString.length(), calculator.getRecordSize());
public void testJustOversized()
String tooBig = new String(new char[SSTRecord.MAX_DATA_SPACE - COMPRESSED_PLAIN_STRING_OVERHEAD + 1]); strings.add(makeUnicodeString(tooBig)); SSTRecordSizeCalculator calculator = new SSTRecordSizeCalculator(strings); assertEquals(SSTRecord.SST_RECORD_OVERHEAD + COMPRESSED_PLAIN_STRING_OVERHEAD + tooBig.length() - 1 // continue record + SSTRecord.STD_RECORD_OVERHEAD + OPTION_FIELD_SIZE + 1, calculator.getRecordSize());
public void testPerfectFit()
String perfectFit = new String(new char[SSTRecord.MAX_DATA_SPACE - COMPRESSED_PLAIN_STRING_OVERHEAD]); strings.add(makeUnicodeString(perfectFit)); SSTRecordSizeCalculator calculator = new SSTRecordSizeCalculator(strings); assertEquals(SSTRecord.SST_RECORD_OVERHEAD + COMPRESSED_PLAIN_STRING_OVERHEAD + perfectFit.length(), calculator.getRecordSize());
public void testSecondStringStartsOnNewContinuation()
String perfectFit = new String(new char[SSTRecord.MAX_DATA_SPACE - COMPRESSED_PLAIN_STRING_OVERHEAD]); strings.add(makeUnicodeString(perfectFit)); strings.add(makeUnicodeString(SMALL_STRING)); SSTRecordSizeCalculator calculator = new SSTRecordSizeCalculator(strings); assertEquals(SSTRecord.SST_RECORD_OVERHEAD + SSTRecord.MAX_DATA_SPACE // second string + SSTRecord.STD_RECORD_OVERHEAD + COMPRESSED_PLAIN_STRING_OVERHEAD + SMALL_STRING.length(), calculator.getRecordSize());