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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *     http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.apache.commons.jxpath.ri.axes;
18  
19  import org.apache.commons.jxpath.JXPathContext;
20  import org.apache.commons.jxpath.JXPathTestCase;
21  
22  /**
23   * Test for the protection mechanism that stops infinite recursion
24   * in descent down a recursive graph. 
25   */
26  public class RecursiveAxesTest extends JXPathTestCase {
27  
28      private RecursiveBean bean;
29      private JXPathContext context;
30  
31      protected void setUp() throws Exception {
32          bean = new RecursiveBean("zero");
33          RecursiveBean bean1 = new RecursiveBean("one");
34          RecursiveBean bean2 = new RecursiveBean("two");
35          RecursiveBean bean3 = new RecursiveBean("three");
36          bean.setFirst(bean1);
37          bean1.setFirst(bean2);
38          bean2.setFirst(bean1);
39          bean2.setSecond(bean3);
40  
41          context = JXPathContext.newContext(null, bean);
42      }
43  
44      public void testInfiniteDescent() {
45          // Existing scalar property
46          assertXPathPointer(
47              context,
48              "//.[name = 'three']",
49              "/first/first/second");
50      }
51  }