solr/contrib/ltr/src/test/org/apache/solr/ltr/feature/TestFeature.java

/*
 * 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.feature;

import java.lang.reflect.Method;

import org.apache.lucene.search.Scorer;
import org.apache.solr.SolrTestCase;
import org.junit.Test;

public class TestFeature extends SolrTestCase {

  @Test
  public void testFilterFeatureScorerOverridesScorerMethods() {
    final Class<?> ffsClass = Feature.FeatureWeight.FilterFeatureScorer.class;
    for (final Method scorerClassMethod : Scorer.class.getDeclaredMethods()) {
      try {

        // the FilterFeatureScorer may simply inherit Scorer's default implementation
        if (scorerClassMethod.getName().equals("twoPhaseIterator")) continue;

        // the FilterFeatureScorer may simply inherit Scorer's default implementation
        if (scorerClassMethod.getName().equals("smoothingScore")) continue;
        
        // the FilterFeatureScorer's implementation does not influence its parent Weight
        if (scorerClassMethod.getName().equals("getWeight")) continue;

        final Method ffsClassMethod = ffsClass.getDeclaredMethod(
            scorerClassMethod.getName(),
            scorerClassMethod.getParameterTypes());
        assertEquals("getReturnType() difference",
            scorerClassMethod.getReturnType(),
            ffsClassMethod.getReturnType());
      } catch (NoSuchMethodException e) {
        fail(ffsClass + " needs to override '" + scorerClassMethod + "'");
      }
    }
  }

}