org.atomserver.testutils.log.Log4jHelperTest.java Source code

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Here is the source code for org.atomserver.testutils.log.Log4jHelperTest.java

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/* Copyright (c) 2007 HomeAway, Inc.
 *  All rights reserved.  http://www.atomserver.org
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.atomserver.testutils.log;

import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public class Log4jHelperTest extends TestCase {

    static private Log log = LogFactory.getLog(Log4jHelperTest.class);

    // -------------------------------------------------------
    public static Test suite() {
        return new TestSuite(Log4jHelperTest.class);
    }

    // -------------------------------------------------------
    protected void setUp() throws Exception {
        super.setUp();
    }

    // -------------------------------------------------------
    protected void tearDown() throws Exception {
        super.tearDown();
    }

    //----------------------------
    //          Tests 
    //----------------------------

    // These tests are rather bogus.
    //  We really should verify it using a file...
    //  But we'd need to wire a new Appender into log4j -- or tee stdout...

    public void testSetAppLogLevel() {
        log.debug("AppLogLevel:: This line should get printed");

        Log4jHelper.setAppLogLevelToWarn();
        log.debug("AppLogLevel:: This line should NOT get printed");

        Log4jHelper.resetAppLogLevel();
        log.debug("AppLogLevel:: This line should get printed");
    }

    public void testSetRootLogLevel() {
        Log log2 = LogFactory.getLog("org.apache.foobar");
        log2.debug("RootLogLevel:: This line should get printed");

        Log4jHelper.setRootLogLevelToWarn();
        log2.debug("RootLogLevel:: This line should NOT get printed");

        Log4jHelper.resetRootLogLevel();
        log2.debug("RootLogLevel:: This line should get printed");
    }

    // This matches the common use case
    public void testSetArbitraryLogLevel() {
        Log log3 = LogFactory.getLog("org.atomserver.foobar");
        log3.debug(
                "ArbitraryLogLevel:: This line should get printed because the default level for AppLogLevel is TRACE");

        // First let's set AppLogLevel to WARN
        Log4jHelper.setAppLogLevelToWarn();
        log3.debug("ArbitraryLogLevel:: This line should NOT get printed");

        // Now let's set log3 to DEBUG 
        Log4jHelper.LogLevel originalLogLevel = Log4jHelper.setLogLevel(log3, Log4jHelper.LogLevel.INFO);
        log3.info("ArbitraryLogLevel:: This line should get printed (originalLogLevel = " + originalLogLevel + ")");
        log3.debug("ArbitraryLogLevel:: This line should NOT get printed");
        assertTrue(originalLogLevel.equals(Log4jHelper.LogLevel.WARN));

        // Now set it back -- Don't forget to do this!!!
        Log4jHelper.LogLevel lastLogLevel = Log4jHelper.setLogLevel(log3, originalLogLevel);
        log3.debug("ArbitraryLogLevel:: This line should get printed (lastLogLevel = " + lastLogLevel);
        assertTrue(lastLogLevel.equals(Log4jHelper.LogLevel.INFO));
    }

}