| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| package org.apache.commons.rdf.impl.utils.graphmatching; |
| |
| import org.apache.commons.rdf.impl.utils.graphmatching.PermutationIterator; |
| import java.util.ArrayList; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| /** |
| * |
| * @author reto |
| */ |
| public class PermutationIteratorTest { |
| |
| @Test |
| public void simple() { |
| List<String> list = new ArrayList<String>(); |
| PermutationIterator<String> pi = new PermutationIterator<String>(list); |
| Assert.assertFalse(pi.hasNext()); |
| } |
| |
| @Test |
| public void lessSimple() { |
| List<String> list = new ArrayList<String>(); |
| list.add("Hasan"); |
| PermutationIterator<String> pi = new PermutationIterator<String>(list); |
| Assert.assertTrue(pi.hasNext()); |
| } |
| |
| @Test |
| public void regular() { |
| List<String> list = new ArrayList<String>(); |
| list.add("Hasan"); |
| list.add("Tsuy"); |
| PermutationIterator<String> pi = new PermutationIterator<String>(list); |
| Set<List<String>> permutations = new HashSet<List<String>>(); |
| while (pi.hasNext()) { |
| permutations.add(pi.next()); |
| } |
| Assert.assertEquals(2, permutations.size()); |
| } |
| |
| @Test |
| public void extended() { |
| List<String> list = new ArrayList<String>(); |
| list.add("Hasan"); |
| list.add("Tsuy"); |
| list.add("Llena"); |
| PermutationIterator<String> pi = new PermutationIterator<String>(list); |
| Set<List<String>> permutations = new HashSet<List<String>>(); |
| while (pi.hasNext()) { |
| permutations.add(pi.next()); |
| } |
| Assert.assertEquals(6, permutations.size()); |
| } |
| |
| } |