1   /*
2    * Copyright 2004-2008 the Seasar Foundation and the Others.
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,
13   * either express or implied. See the License for the specific language
14   * governing permissions and limitations under the License.
15   */
16  package org.seasar.cubby;
17  
18  import java.lang.reflect.Field;
19  
20  public class TestUtils {
21  
22  	@SuppressWarnings("unchecked")
23  	public static <T> T getPrivateField(Object obj, String fieldName)
24  			throws NoSuchFieldException {
25  
26  		Class<?> class1 = obj.getClass();
27  		final Field field = findField(class1, fieldName);
28  		field.setAccessible(true);
29  
30  		try {
31  			return (T) field.get(obj);
32  		} catch (IllegalAccessException e) {
33  			throw new RuntimeException(e);
34  		}
35  	}
36  
37  	private static Field findField(Class<?> clazz, String fieldName)
38  			throws NoSuchFieldException {
39  		for (; clazz != null; clazz = clazz.getSuperclass()) {
40  			for (Field afield : clazz.getDeclaredFields()) {
41  				if (afield.getName().equals(fieldName)) {
42  					return afield;
43  				}
44  			}
45  		}
46  
47  		throw new NoSuchFieldException(fieldName);
48  	}
49  
50  }