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Java > Open Source Codes > org > apache > hivemind > test > AggregateArgumentsMatcher


1 // Copyright 2004, 2005 The Apache Software Foundation
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 package org.apache.hivemind.test;
16
17 import org.easymock.AbstractMatcher;
18
19 /**
20  * @author Howard M. Lewis Ship
21  * @since 1.1
22  */
23 public class AggregateArgumentsMatcher extends AbstractMatcher
24 {
25     private ArgumentMatcher[] _matchers;
26
27     private ArgumentMatcher _defaultMatcher = new EqualsMatcher();
28
29     /**
30      * Aggregates the individual matchers. Each matcher is matched against the argument in the same
31      * position. Null matchers, or arguments outside the array range, are handled by a default
32      * instance (of {@link EqualsMatcher}). This makes it easy to provide special argument matchers
33      * for particular arguments.
34      */
35     public AggregateArgumentsMatcher(ArgumentMatcher[] matchers)
36     {
37         _matchers = matchers;
38     }
39
40     /**
41      * Convienice for just a single matcher.
42      */
43     public AggregateArgumentsMatcher(ArgumentMatcher matcher)
44     {
45         this(new ArgumentMatcher[]
46         { matcher });
47     }
48
49     public boolean matches(Object JavaDoc[] expected, Object JavaDoc[] actual)
50     {
51         for (int i = 0; i < expected.length; i++)
52         {
53             if (!matches(i, expected[i], actual[i]))
54                 return false;
55         }
56
57         return true;
58     }
59
60     private boolean matches(int argumentIndex, Object JavaDoc expected, Object JavaDoc actual)
61     {
62         if (expected == actual)
63             return true;
64
65         // If one is null, but both aren't null (previous check) then a non-match.
66
67         if (expected == null || actual == null)
68             return false;
69
70         ArgumentMatcher am = getArgumentMatcher(argumentIndex);
71
72         return am.compareArguments(expected, actual);
73     }
74
75     private ArgumentMatcher getArgumentMatcher(int argumentIndex)
76     {
77         if (argumentIndex >= _matchers.length)
78             return _defaultMatcher;
79
80         ArgumentMatcher result = _matchers[argumentIndex];
81
82         if (result == null)
83             result = _defaultMatcher;
84
85         return result;
86     }
87 }
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