NoOpLogTestCase xref

    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 }