1   /*
2    * Copyright 1999-2004 The Apache Software Foundation
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *     http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package org.apache.commons.jxpath.ri.axes;
17  
18  import org.apache.commons.jxpath.JXPathContext;
19  import org.apache.commons.jxpath.JXPathTestCase;
20  
21  /***
22   * Test for the protection mechanism that stops infinite recursion
23   * in descent down a recursive graph. 
24   */
25  public class RecursiveAxesTest extends JXPathTestCase {
26  
27      private RecursiveBean bean;
28      private JXPathContext context;
29  
30      public RecursiveAxesTest(String name) {
31          super(name);
32      }
33  
34      public static void main(String[] args) {
35          junit.textui.TestRunner.run(RecursiveAxesTest.class);
36      }
37  
38      /***
39       * @see TestCase#setUp()
40       */
41      protected void setUp() throws Exception {
42          bean = new RecursiveBean("zero");
43          RecursiveBean bean1 = new RecursiveBean("one");
44          RecursiveBean bean2 = new RecursiveBean("two");
45          RecursiveBean bean3 = new RecursiveBean("three");
46          bean.setFirst(bean1);
47          bean1.setFirst(bean2);
48          bean2.setFirst(bean1);
49          bean2.setSecond(bean3);
50  
51          context = JXPathContext.newContext(null, bean);
52      }
53  
54      public void testInfiniteDescent() {
55          // Existing scalar property
56          assertXPathPointer(
57              context,
58              "//.[name = 'three']",
59              "/first/first/second");
60      }
61  }
62