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;
  
  import static org.simmetrics.tokenizers.Tokenizers.whitespace;
  
  import java.util.List;
  
  import org.simmetrics.tokenizers.Tokenizer;
  
  import com.google.common.collect.HashMultiset;
  import com.google.common.collect.Multiset;
  
  @SuppressWarnings("javadoc")
  public abstract class MultisetDistanceTest extends
  		CollectionDistanceTest<String, Multiset<String>> {
  
  	protected static final class T extends C<String, Multiset<String>> {
  
  		public T(float similarity, Multiset<String> a, Multiset<String> b) {
  			super(similarity, a, b);
  		}
  
  		public T(float similarity, List<String> a, List<String> b) {
  			this(similarity, HashMultiset.create(a), b);
  		}
  
  		public T(float similarity, Multiset<String> a, List<String> b) {
  			this(similarity, a, HashMultiset.create(b));
  		}
  
  		public T(float similarity, String a, String b) {
  			this(whitespace(), similarity, a, b);
  		}
  
  		public T(Tokenizer t, float similarity, String a, String b) {
  			this(similarity, t.tokenizeToList(a), t.tokenizeToList(b));
  		}
  
  	}
  
  	@Override
  	protected abstract T[] getTests();
  
  	@Override
  	protected final Multiset<String> getEmpty() {
  		return HashMultiset.create();
  	}
  	
  	@Override
  	public Multiset<String> getCollectionContainNull() {
  		HashMultiset<String> create = HashMultiset.create();
  		create.add(null);
  		return create;
  	}
  
  
  }
  