package com.bericotech.clavin.index;
import static org.junit.Assert.*;
import org.apache.lucene.search.similarities.DefaultSimilarity;
import org.junit.Test;
/*#####################################################################
*
* CLAVIN (Cartographic Location And Vicinity INdexer)
* ---------------------------------------------------
*
* Copyright (C) 2012-2013 Berico Technologies
* http://clavin.bericotechnologies.com
*
* ====================================================================
*
* Licensed 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.
*
* ====================================================================
*
* BinarySimilarityTest.java
*
*###################################################################*/
/**
* Checks output from class used to overwrite default Lucene scoring.
*
*/
public class BinarySimilarityTest {
/**
* Ensures output is either 1 (for all inputs > 0), or 0.
*/
@Test
public void testTF() {
DefaultSimilarity sim = new BinarySimilarity();
assertEquals("big positive number", 1, (int)Math.round(sim.tf(999)));
assertEquals("slightly more than 1", 1, (int)Math.round(sim.tf(2)));
assertEquals("just 1", 1, (int)Math.round(sim.tf(1)));
assertEquals("slightly less than 1", 0, (int)Math.round(sim.tf(0)));
assertEquals("big negative number", 0, (int)Math.round(sim.tf(-999)));
}
}