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Coverage timestamp: Fri May 9 2008 10:54:27 EST

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Statistics for file TestSegmentTermEnum.java:
Stmts:	31	LOC:	94	Total cmp:	4	Stmts/Method:	10.33
Branches:	2	NCLOC:	58	Cmp density:	0.13	Methods/Class:	3
Methods:	3			Avg method cmp:	1.33
Classes:	1

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TestSegmentTermEnum

Line # 20

Total Statements 31

Complexity 4

TOTAL Coverage 100%

1.0

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Highlight	Test Contribution	Test	Result
	1.0	org.apache.lucene.index.TestSegmentTermEnum.testTermEnum org.apache.lucene.index.TestSegmentTermEnum.testTermEnum	1 PASS

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package org.apache.lucene.index;

import java.io.IOException;

import junit.framework.TestCase;

import org.apache.lucene.analysis.WhitespaceAnalyzer;

import org.apache.lucene.document.Document;

import org.apache.lucene.document.Field;

import org.apache.lucene.index.IndexReader;

import org.apache.lucene.index.IndexWriter;

import org.apache.lucene.index.Term;

import org.apache.lucene.index.TermEnum;

import org.apache.lucene.store.Directory;

import org.apache.lucene.store.RAMDirectory;

/**

* @author goller

public class TestSegmentTermEnum extends TestCase

{

Directory dir = new RAMDirectory();

public void testTermEnum() throws IOException

{

IndexWriter writer = null;

writer = new IndexWriter(dir, new WhitespaceAnalyzer(), true);

// add 100 documents with term : aaa

// add 100 documents with terms: aaa bbb

// Therefore, term 'aaa' has document frequency of 200 and term 'bbb' 100

101

for (int i = 0; i < 100; i++) {

100

addDoc(writer, "aaa");

100

addDoc(writer, "aaa bbb");

}

writer.close();

// verify document frequency of terms in an unoptimized index

verifyDocFreq();

// merge segments by optimizing the index

writer = new IndexWriter(dir, new WhitespaceAnalyzer(), false);

writer.optimize();

writer.close();

// verify document frequency of terms in an optimized index

verifyDocFreq();

}

private void verifyDocFreq()

throws IOException

{

IndexReader reader = IndexReader.open(dir);

TermEnum termEnum = null;

// create enumeration of all terms

termEnum = reader.terms();

// go to the first term (aaa)

termEnum.next();

// assert that term is 'aaa'

assertEquals("aaa", termEnum.term().text());

assertEquals(200, termEnum.docFreq());

// go to the second term (bbb)

termEnum.next();

// assert that term is 'bbb'

assertEquals("bbb", termEnum.term().text());

assertEquals(100, termEnum.docFreq());

termEnum.close();

// create enumeration of terms after term 'aaa', including 'aaa'

termEnum = reader.terms(new Term("content", "aaa"));

// assert that term is 'aaa'

assertEquals("aaa", termEnum.term().text());

assertEquals(200, termEnum.docFreq());

// go to term 'bbb'

termEnum.next();

// assert that term is 'bbb'

assertEquals("bbb", termEnum.term().text());

assertEquals(100, termEnum.docFreq());

termEnum.close();

}

200

private void addDoc(IndexWriter writer, String value) throws IOException

{

200

Document doc = new Document();

200

doc.add(new Field("content", value, Field.Store.NO, Field.Index.TOKENIZED));

200

writer.addDocument(doc);

}