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1   package org.apache.maven.scm;
2   
3   /*
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *   http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  import java.util.Collection;
23  
24  import org.hamcrest.Description;
25  import org.hamcrest.Matcher;
26  import org.hamcrest.TypeSafeMatcher;
27  
28  public class CollectionSizeMatcher<T>
29      extends TypeSafeMatcher<Iterable<T>>
30  {
31  
32      private int size;
33  
34      public CollectionSizeMatcher( int size )
35      {
36          this.size = size;
37      }
38  
39      @Override
40      public boolean matchesSafely( Iterable<T> iterable )
41      {
42          Collection<?> collection = (Collection<?>) iterable;
43          return collection.size() == this.size;
44  
45      }
46  
47      public void describeTo( Description desc )
48      {
49          desc.appendText( "with size " );
50          desc.appendValue( size );
51  
52      }
53  
54  
55      public static <T> Matcher<Iterable<T>> size( int length, Class<T> clazz )
56      {
57          return new CollectionSizeMatcher<T>( length);
58      }
59  }