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
18 package org.apache.commons.logging.noop;
19
20 import java.io.ByteArrayInputStream;
21 import java.io.ByteArrayOutputStream;
22 import java.io.ObjectInputStream;
23 import java.io.ObjectOutputStream;
24
25 import org.apache.commons.logging.Log;
26 import org.apache.commons.logging.LogFactory;
27 import org.apache.commons.logging.impl.NoOpLog;
28 import org.apache.commons.logging.AbstractLogTest;
29
30 /**
31 * Tests for NoOpLog logging adapter.
32 * <p>
33 * This simply applies the tests defined in AbstractLogTest to this class.
34 */
35 public class NoOpLogTestCase extends AbstractLogTest
36 {
37 /**
38 * Set up instance variables required by this test case.
39 */
40 public void setUp() throws Exception {
41 LogFactory.releaseAll();
42
43 System.setProperty(
44 "org.apache.commons.logging.Log",
45 "org.apache.commons.logging.impl.NoOpLog");
46 }
47
48 /**
49 * Tear down instance variables required by this test case.
50 */
51 public void tearDown() {
52 LogFactory.releaseAll();
53 System.getProperties().remove("org.apache.commons.logging.Log");
54 }
55
56 /**
57 * Override the abstract method from the parent class so that the
58 * inherited tests can access the right Log object type.
59 */
60 public Log getLogObject()
61 {
62 return (Log) new NoOpLog(this.getClass().getName());
63 }
64
65 // Test Serializability of standard instance
66 public void testSerializable() throws Exception {
67 Log log = LogFactory.getLog(this.getClass().getName());
68 checkLog(log);
69
70 // Serialize and deserialize the instance
71 ByteArrayOutputStream baos = new ByteArrayOutputStream();
72 ObjectOutputStream oos = new ObjectOutputStream(baos);
73 oos.writeObject(log);
74 oos.close();
75 ByteArrayInputStream bais =
76 new ByteArrayInputStream(baos.toByteArray());
77 ObjectInputStream ois = new ObjectInputStream(bais);
78 log = (Log) ois.readObject();
79 ois.close();
80
81 checkLog(log);
82 }
83
84
85 // -------------------------------------------------------- Support Methods
86
87 private void checkLog(Log log) {
88
89 assertNotNull("Log exists", log);
90 assertEquals("Log class",
91 "org.apache.commons.logging.impl.NoOpLog",
92 log.getClass().getName());
93
94 // Can we call level checkers with no exceptions?
95 // Note that *everything* is permanently disabled for NoOpLog
96 assertFalse(log.isTraceEnabled());
97 assertFalse(log.isDebugEnabled());
98 assertFalse(log.isInfoEnabled());
99 assertFalse(log.isWarnEnabled());
100 assertFalse(log.isErrorEnabled());
101 assertFalse(log.isFatalEnabled());
102 }
103 }