testsearchresults.java

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/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.hadoop.contrib.dlucene.writable;

import java.io.DataInput;
import java.io.IOException;

import junit.framework.TestCase;

import org.apache.hadoop.contrib.dlucene.ConstantsForTest;
import org.apache.hadoop.contrib.dlucene.UtilsForTest;
import org.apache.hadoop.contrib.dlucene.LuceneIndex;
import org.apache.hadoop.io.DataInputBuffer;
import org.apache.hadoop.io.DataOutputBuffer;
import org.apache.lucene.document.Document;
import org.apache.lucene.search.Hits;

public class TestSearchResults extends TestCase {

  private static SearchResults sr = new SearchResults();

  protected void setUp() throws Exception {
    super.setUp();
  }

  public void testSearchResults() {
    SearchResults q = new SearchResults();
    assertEquals(0, q.size());
  }

  private LuceneIndex makeLuceneIndex() throws Exception {
    LuceneIndex li = new LuceneIndex();
    li.indexArticle(ConstantsForTest.NAME[0], "Life in bedrock", "Anthropology");
    li.indexArticle(ConstantsForTest.NAME[1], "Dino's habits", "Anthropology");
    li.indexArticle(ConstantsForTest.NAME[0], "Living with Wilma", "Bibliography");
    return li;
  }

  public void testSearchResultsHits() throws Exception {
    LuceneIndex li = makeLuceneIndex();
    Hits hits = li.search("author:Fred");
    sr = new SearchResults(hits);
    assertEquals(hits.length(), sr.size());
    for (int i = 0; i < hits.length(); i++) {
      assertEquals(hits.doc(i), sr.get(i));
    }
  }

  public void testReadNull() throws Exception {
    try {
      SearchResults.read((DataInput) null);
      fail("read() should have thrown an exception!");
    } catch (IllegalArgumentException expected) {
      // expected
    }
  }
  
  public void testWriteNull() throws Exception {
    try {
      sr.write(null);
      fail("write() should have thrown an exception!");
    } catch (IllegalArgumentException expected) {
      // expected
    }
  }

  public void testReadWrite() throws IOException {
    DataOutputBuffer out = new DataOutputBuffer();
    sr.write(out);
    DataInputBuffer in = new DataInputBuffer();
    in.reset(out.getData(), out.getLength());
    SearchResults qr = SearchResults.read(in);
    assertEquals(sr, qr);
  }

  public void testAddDocument() {
    int s = sr.size();
    Document doc = UtilsForTest.makeDocument("author", "William Shakespeare");
    sr.add(doc);
    assertEquals(s + 1, sr.size());
  }

  public void testAddSearchResults() {
    SearchResults orb = new SearchResults();
    orb.add(sr);
    assertEquals(sr.size(), orb.size());
  }

  public void testEquals() throws Exception {
    LuceneIndex li = makeLuceneIndex();
    SearchResults s1 = new SearchResults(li.search("author:Fred"));
    SearchResults s2 = new SearchResults(li.search("author:Fred"));
    SearchResults s3 = new SearchResults(li.search("author:Barney"));
    assertEquals(2, s1.size());
    assertEquals(2, s2.size());
    assertEquals(1, s3.size());
    assertEquals(s1, s2);
    assertTrue(!s1.equals(s3));
    assertTrue(!s2.equals(s3));
    assertNotNull(s1.toString());
    assertTrue(s1.hashCode() != 0);
  }

}