/*
* Terrier - Terabyte Retriever
* Webpage: http://terrier.org/
* Contact: terrier{a.}dcs.gla.ac.uk
* University of Glasgow - School of Computing Science
* http://www.gla.ac.uk/
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* The Original Code is TestPostingStructures.java
*
* The Original Code is Copyright (C) 2004-2011 the University of Glasgow.
* All Rights Reserved.
*
* Contributor(s):
* Craig Macdonald <craigm{a.}dcs.gla.ac.uk> (original contributor)
*/
package org.terrier.structures;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.junit.Test;
import org.terrier.compression.BitInputStream;
import org.terrier.structures.postings.BasicIterablePosting;
import org.terrier.structures.postings.BasicPostingImpl;
import org.terrier.structures.postings.IterablePosting;
import org.terrier.structures.postings.Posting;
import org.terrier.tests.ApplicationSetupBasedTest;
/** Tests that the Posting structures behave as expected */
public class TestPostingStructures extends ApplicationSetupBasedTest {
@SuppressWarnings("unchecked")
@Test public void testSingleEntrySinglePosting() throws Exception
{
List<Posting> postings = new ArrayList<Posting>();
postings.add(new BasicPostingImpl(1,1));
List<BitIndexPointer> pointerList = new ArrayList<BitIndexPointer>();
String filename = PostingTestUtils.writePostingsToFile(new Iterator[]{postings.iterator()}, pointerList);
BitInputStream bitIn = new BitInputStream(filename);
IterablePosting ip = new BasicIterablePosting(bitIn, postings.size(), null);
PostingTestUtils.comparePostings(postings, ip);
}
@SuppressWarnings("unchecked")
@Test public void testSingleEntrySeveralPostings() throws Exception
{
List<Posting> postings = new ArrayList<Posting>();
postings.add(new BasicPostingImpl(1,1));
postings.add(new BasicPostingImpl(2,1));
postings.add(new BasicPostingImpl(10,1));
postings.add(new BasicPostingImpl(100,1));
List<BitIndexPointer> pointerList = new ArrayList<BitIndexPointer>();
String filename = PostingTestUtils.writePostingsToFile(new Iterator[]{postings.iterator()}, pointerList);
BitInputStream bitIn = new BitInputStream(filename);
IterablePosting ip = new BasicIterablePosting(bitIn, postings.size(), null);
PostingTestUtils.comparePostings(postings, ip);
}
}