/* * 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.solr.spelling; import java.io.IOException; import org.apache.lucene.search.spell.JaroWinklerDistance; import org.apache.lucene.search.spell.LevenshteinDistance; import org.apache.lucene.search.spell.LuceneLevenshteinDistance; import org.apache.lucene.search.spell.NGramDistance; import org.apache.lucene.search.spell.StringDistance; import org.apache.solr.SolrTestCase; import org.apache.solr.core.SolrCore; import org.apache.solr.search.SolrIndexSearcher; import org.junit.Assert; import org.junit.Test; public class ConjunctionSolrSpellCheckerTest extends SolrTestCase { public static final Class<?>[] AVAILABLE_DISTANCES = {LevenshteinDistance.class, LuceneLevenshteinDistance.class, JaroWinklerDistance.class, NGramDistance.class}; @Test public void test() throws Exception { ConjunctionSolrSpellChecker cssc = new ConjunctionSolrSpellChecker(); @SuppressWarnings("unchecked") Class<StringDistance> sameDistance = (Class<StringDistance>) AVAILABLE_DISTANCES[random().nextInt(AVAILABLE_DISTANCES.length)]; StringDistance sameDistance1 = sameDistance.getConstructor().newInstance(); StringDistance sameDistance2 = sameDistance.getConstructor().newInstance(); //NGramDistance defaults to 2, so we'll try 3 or 4 to ensure we have one that is not-equal. StringDistance differentDistance = new NGramDistance(3); if(sameDistance1.equals(differentDistance)) { differentDistance = new NGramDistance(4); if(sameDistance1.equals(differentDistance)) { fail("Cannot set up test. 2 NGramDistances with different gram sizes should not be equal."); } } Assert.assertEquals("The distance " + sameDistance + " does not properly implement equals.", sameDistance1, sameDistance2); MockSolrSpellChecker checker1 = new MockSolrSpellChecker(sameDistance1); MockSolrSpellChecker checker2 = new MockSolrSpellChecker(sameDistance2); MockSolrSpellChecker checker3 = new MockSolrSpellChecker(differentDistance); cssc.addChecker(checker1); cssc.addChecker(checker2); expectThrows(IllegalArgumentException.class, () -> cssc.addChecker(checker3)); } static class MockSolrSpellChecker extends SolrSpellChecker { final StringDistance sd; MockSolrSpellChecker(StringDistance sd) { this.sd = sd; } @Override protected StringDistance getStringDistance() { return sd; } @Override public void reload(SolrCore core, SolrIndexSearcher searcher) throws IOException {} @Override public void build(SolrCore core, SolrIndexSearcher searcher) throws IOException {} @Override public SpellingResult getSuggestions(SpellingOptions options) throws IOException { return null; } } }