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Java > Open Source Codes > org > apache > commons > logging > log4j > DefaultConfigTestCase


1 /*
2  * Copyright 2001-2004 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
17 package org.apache.commons.logging.log4j;
18
19
20 import java.io.ByteArrayInputStream JavaDoc;
21 import java.io.ByteArrayOutputStream JavaDoc;
22 import java.io.ObjectInputStream JavaDoc;
23 import java.io.ObjectOutputStream JavaDoc;
24
25 import junit.framework.Test;
26 import junit.framework.TestCase;
27 import junit.framework.TestSuite;
28
29 import org.apache.commons.logging.Log;
30 import org.apache.commons.logging.LogFactory;
31
32
33 /**
34  * <p>TestCase for Log4J logging when running on a system with
35  * zero configuration, and with Log4J present (so Log4J logging
36  * should be automatically configured).</p>
37  *
38  * @author Craig R. McClanahan
39  * @version $Revision: 1.7 $ $Date: 2004/02/28 21:46:46 $
40  */
41
42 public class DefaultConfigTestCase extends TestCase {
43
44
45     // ----------------------------------------------------------- Constructors
46
47
48     /**
49      * <p>Construct a new instance of this test case.</p>
50      *
51      * @param name Name of the test case
52      */
53     public DefaultConfigTestCase(String JavaDoc name) {
54         super(name);
55     }
56
57
58     // ----------------------------------------------------- Instance Variables
59
60
61     /**
62      * <p>The {@link LogFactory} implementation we have selected.</p>
63      */
64     protected LogFactory factory = null;
65
66
67     /**
68      * <p>The {@link Log} implementation we have selected.</p>
69      */
70     protected Log log = null;
71
72
73     // ------------------------------------------- JUnit Infrastructure Methods
74
75
76     /**
77      * Set up instance variables required by this test case.
78      */
79     public void setUp() throws Exception JavaDoc {
80         setUpFactory();
81         setUpLog("TestLogger");
82     }
83
84
85     /**
86      * Return the tests included in this test suite.
87      */
88     public static Test suite() {
89         return (new TestSuite(DefaultConfigTestCase.class));
90     }
91
92     /**
93      * Tear down instance variables required by this test case.
94      */
95     public void tearDown() {
96         log = null;
97         factory = null;
98         LogFactory.releaseAll();
99     }
100
101
102     // ----------------------------------------------------------- Test Methods
103
104
105     // Test pristine Log instance
106 public void testPristineLog() {
107
108         checkLog();
109
110     }
111
112
113     // Test pristine LogFactory instance
114 public void testPristineFactory() {
115
116         assertNotNull("LogFactory exists", factory);
117         assertEquals("LogFactory class",
118                      "org.apache.commons.logging.impl.LogFactoryImpl",
119                      factory.getClass().getName());
120
121         String JavaDoc names[] = factory.getAttributeNames();
122         assertNotNull("Names exists", names);
123         assertEquals("Names empty", 0, names.length);
124
125     }
126
127
128     // Test Serializability of Log instance
129 public void testSerializable() throws Exception JavaDoc {
130
131         // Serialize and deserialize the instance
132 ByteArrayOutputStream JavaDoc baos = new ByteArrayOutputStream JavaDoc();
133         ObjectOutputStream JavaDoc oos = new ObjectOutputStream JavaDoc(baos);
134         oos.writeObject(log);
135         oos.close();
136         ByteArrayInputStream JavaDoc bais =
137             new ByteArrayInputStream JavaDoc(baos.toByteArray());
138         ObjectInputStream JavaDoc ois = new ObjectInputStream JavaDoc(bais);
139         log = (Log) ois.readObject();
140         ois.close();
141
142         // Check the characteristics of the resulting object
143 checkLog();
144
145     }
146
147
148     // -------------------------------------------------------- Support Methods
149
150
151
152     // Check the log instance
153 protected void checkLog() {
154
155         assertNotNull("Log exists", log);
156         assertEquals("Log class",
157                      "org.apache.commons.logging.impl.Log4JLogger",
158                      log.getClass().getName());
159
160         // Can we call level checkers with no exceptions?
161 log.isDebugEnabled();
162         log.isErrorEnabled();
163         log.isFatalEnabled();
164         log.isInfoEnabled();
165         log.isTraceEnabled();
166         log.isWarnEnabled();
167
168     }
169
170
171     // Set up factory instance
172 protected void setUpFactory() throws Exception JavaDoc {
173         factory = LogFactory.getFactory();
174     }
175
176
177     // Set up log instance
178 protected void setUpLog(String JavaDoc name) throws Exception JavaDoc {
179         log = LogFactory.getLog(name);
180     }
181
182
183 }
184
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