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.simplifiers;
  
  import org.hamcrest.Description;
  import org.hamcrest.TypeSafeMatcher;
  import org.simmetrics.simplifiers.Simplifiers.ChainSimplifier;
  
  import com.google.common.collect.ImmutableList;
  import com.google.monitoring.runtime.instrumentation.common.com.google.common.collect.Lists;
  
  @SuppressWarnings("javadoc")
  public abstract class SimplifiersMatcher extends TypeSafeMatcher<Simplifier> {
  	
  	public static SimplifiersMatcher chain(final Simplifier simplifier,
  			final Simplifier... simplifiers){
  		return new SimplifiersMatcher() {
  			
  			@Override
  			public void describeTo(Description arg0) {
  				arg0.appendValue(Simplifiers.chain(simplifier, simplifiers));
  			}
  
  			@Override
  			protected boolean matchesSafely(Simplifier item) {
  				if(item.getClass() != ChainSimplifier.class){
  					return false;
  				}
  				
  				ChainSimplifier s = (ChainSimplifier) item;
  				
  				return ImmutableList.copyOf(Lists.asList(simplifier, simplifiers)).equals(s.getSimplifiers());
  			}
  		};
  		
  	}
  
  }
  