code: /*
   * #%L
   * Simmetrics Core
   * %%
   * Copyright (C) 2014 - 2016 Simmetrics Authors
   * %%
   * 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.
   * #L%
   */
  
  package org.simmetrics.metrics;
  
  import static java.util.Arrays.asList;
  
  import java.util.List;
  
  import org.junit.Test;
  import org.junit.experimental.runners.Enclosed;
  import org.junit.runner.RunWith;
  import org.simmetrics.Distance;
  import org.simmetrics.ListDistanceTest;
  import org.simmetrics.StringDistanceTest;
  
  @SuppressWarnings("javadoc")
  @RunWith(Enclosed.class)
  public final class HammingDistanceTest {
  
  	public final static class DistanceList extends ListDistanceTest {
  
  		@Override
  		protected Distance<List<String>> getMetric() {
  			return HammingDistance.forList();
  		}
  		@Override
  		protected T[] getTests() {
  			return new T[] {
  					new T(1.0000f, 
  							asList("a", "b", "c", "d"),
  							asList("a", "b", "c", "e")),
  					new T(2.0000f, 
  							asList("a", "b", "c", "d"),
  							asList("a", "b", "e", "f")),
  					new T(2.0000f, 
  							asList("a", "b", "c", null),
  							asList("a", "b", "e", "f"))
  				};
  		}
  
  		@Test(expected = IllegalArgumentException.class)
  		public void shouldThrowForDifferentLength() {
  			getMetric().distance(asList("test", "string1"), asList("test"));
  		}
  
  	}
  
  	public final static class DistanceString extends StringDistanceTest {
  
  		@Override
  		protected Distance<String> getMetric() {
  			return HammingDistance.forString();
  		}
  
  
  		@Override
  		protected T[] getTests() {
  			return new T[] { new T(0.0000f, "test 1", "test 1"),
  					new T(1.0000f, "test 1", "test 2"),
  					new T(3.0000f, "aaabbb", "aaaaaa"),
  					new T(1.0000f, "abcdxy", "abcexy"),
  					new T(2.0000f, "abcdxy", "abefxy") };
  		}
  
  		@Test(expected = IllegalArgumentException.class)
  		public void shouldThrowForDifferentLength() {
  			getMetric().distance("test", "test string2");
  		}
  
  	}
  
  }
  