| /* |
| * 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.ltr.norm; |
| |
| import java.nio.file.Paths; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.apache.solr.SolrTestCaseJ4; |
| import org.apache.solr.core.SolrResourceLoader; |
| import org.junit.Test; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| public class TestMinMaxNormalizer { |
| |
| private final SolrResourceLoader solrResourceLoader = new SolrResourceLoader(Paths.get("").toAbsolutePath()); |
| |
| private Normalizer implTestMinMax(Map<String,Object> params, |
| float expectedMin, float expectedMax) { |
| final Normalizer n = Normalizer.getInstance( |
| solrResourceLoader, |
| MinMaxNormalizer.class.getName(), |
| params); |
| assertTrue(n instanceof MinMaxNormalizer); |
| final MinMaxNormalizer mmn = (MinMaxNormalizer)n; |
| assertEquals(mmn.getMin(), expectedMin, 0.0); |
| assertEquals(mmn.getMax(), expectedMax, 0.0); |
| assertEquals("{min="+expectedMin+", max="+expectedMax+"}", mmn.paramsToMap().toString()); |
| return n; |
| } |
| |
| @Test |
| public void testInvalidMinMaxNoParams() { |
| implTestMinMax(new HashMap<String,Object>(), |
| Float.NEGATIVE_INFINITY, |
| Float.POSITIVE_INFINITY); |
| } |
| |
| @Test |
| public void testInvalidMinMaxMissingMax() { |
| final Map<String,Object> params = new HashMap<String,Object>(); |
| params.put("min", "0.0f"); |
| implTestMinMax(params, |
| 0.0f, |
| Float.POSITIVE_INFINITY); |
| } |
| |
| @Test |
| public void testInvalidMinMaxMissingMin() { |
| final Map<String,Object> params = new HashMap<String,Object>(); |
| params.put("max", "0.0f"); |
| implTestMinMax(params, |
| Float.NEGATIVE_INFINITY, |
| 0.0f); |
| } |
| |
| @Test |
| public void testMinMaxNormalizerMinLargerThanMax() { |
| final Map<String,Object> params = new HashMap<String,Object>(); |
| params.put("min", "10.0f"); |
| params.put("max", "0.0f"); |
| implTestMinMax(params, |
| 10.0f, |
| 0.0f); |
| } |
| |
| @Test |
| public void testMinMaxNormalizerMinEqualToMax() { |
| final Map<String,Object> params = new HashMap<String,Object>(); |
| params.put("min", "10.0f"); |
| params.put("max", "10.0f"); |
| final NormalizerException expectedException = |
| new NormalizerException("MinMax Normalizer delta must not be zero " |
| + "| min = 10.0,max = 10.0,delta = 0.0"); |
| NormalizerException ex = SolrTestCaseJ4.expectThrows(NormalizerException.class, |
| () -> implTestMinMax(params, 10.0f, 10.0f) |
| ); |
| assertEquals(expectedException.toString(), ex.toString()); |
| } |
| |
| @Test |
| public void testNormalizer() { |
| final Map<String,Object> params = new HashMap<String,Object>(); |
| params.put("min", "5.0f"); |
| params.put("max", "10.0f"); |
| final Normalizer n = |
| implTestMinMax(params, |
| 5.0f, |
| 10.0f); |
| |
| float value = 8; |
| assertEquals((value - 5f) / (10f - 5f), n.normalize(value), 0.0001); |
| value = 100; |
| assertEquals((value - 5f) / (10f - 5f), n.normalize(value), 0.0001); |
| value = 150; |
| assertEquals((value - 5f) / (10f - 5f), n.normalize(value), 0.0001); |
| value = -1; |
| assertEquals((value - 5f) / (10f - 5f), n.normalize(value), 0.0001); |
| value = 5; |
| assertEquals((value - 5f) / (10f - 5f), n.normalize(value), 0.0001); |
| } |
| |
| @Test |
| public void testParamsToMap() { |
| final MinMaxNormalizer n1 = new MinMaxNormalizer(); |
| n1.setMin(5.0f); |
| n1.setMax(10.0f); |
| |
| final Map<String,Object> params = n1.paramsToMap(); |
| final MinMaxNormalizer n2 = (MinMaxNormalizer) Normalizer.getInstance( |
| new SolrResourceLoader(Paths.get("").toAbsolutePath()), |
| MinMaxNormalizer.class.getName(), |
| params); |
| assertEquals(n1.getMin(), n2.getMin(), 1e-6); |
| assertEquals(n1.getMax(), n2.getMax(), 1e-6); |
| } |
| } |