001/*
002 * ModeShape (http://www.modeshape.org)
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *       http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package org.modeshape.common.collection;
017
018import java.util.Arrays;
019import java.util.Iterator;
020import org.junit.Test;
021import static org.junit.Assert.assertThat;
022import static org.modeshape.common.collection.IsIteratorContaining.hasItems;
023
024
025/**
026 * Unit test for {@link Collections}
027 */
028public class CollectionsTest {
029
030    @Test
031    public void shouldConcatenateIterables() throws Exception {
032        Iterable<String> a = Arrays.asList("a", "b", "c");
033        Iterable<String> b = Arrays.asList("1", "2", "3");
034
035        final Iterable<String> concatIterable = Collections.concat(a, b);
036        final Iterator<String> iterator = concatIterable.iterator();
037        assertThat(iterator, hasItems("a", "b", "c", "1", "2", "3"));
038    }
039
040    @Test
041    public void shouldConcatenateIterators() throws Exception {
042        Iterable<String> a = Arrays.asList("a", "b", "c");
043        Iterable<String> b = Arrays.asList("1", "2", "3");
044
045        final Iterator<String> iterator = Collections.concat(a.iterator(), b.iterator());
046        assertThat(iterator, hasItems("a", "b", "c", "1", "2", "3"));
047    }
048}