001package org.apache.maven.scm;
002
003/*
004 * Licensed to the Apache Software Foundation (ASF) under one
005 * or more contributor license agreements.  See the NOTICE file
006 * distributed with this work for additional information
007 * regarding copyright ownership.  The ASF licenses this file
008 * to you under the Apache License, Version 2.0 (the
009 * "License"); you may not use this file except in compliance
010 * with the License.  You may obtain a copy of the License at
011 *
012 *   http://www.apache.org/licenses/LICENSE-2.0
013 *
014 * Unless required by applicable law or agreed to in writing,
015 * software distributed under the License is distributed on an
016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
017 * KIND, either express or implied.  See the License for the
018 * specific language governing permissions and limitations
019 * under the License.
020 */
021
022import java.util.Collection;
023
024import org.hamcrest.Description;
025import org.hamcrest.Matcher;
026import org.hamcrest.TypeSafeMatcher;
027
028public class CollectionSizeMatcher<T>
029    extends TypeSafeMatcher<Iterable<T>>
030{
031
032    private int size;
033
034    public CollectionSizeMatcher( int size )
035    {
036        this.size = size;
037    }
038
039    @Override
040    public boolean matchesSafely( Iterable<T> iterable )
041    {
042        Collection collection = (Collection) iterable;
043        return collection.size() == this.size;
044
045    }
046
047    public void describeTo( Description desc )
048    {
049        desc.appendText( "with size " );
050        desc.appendValue( size );
051
052    }
053
054
055    public static <T> Matcher<Iterable<T>> size( int length, Class<T> clazz )
056    {
057        return new CollectionSizeMatcher<T>( length);
058    }
059}