log4j-core/src/test/java/org/apache/logging/log4j/core/HostNameTest.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.logging.log4j.core;

import java.util.List;

import org.apache.logging.log4j.core.appender.RollingFileAppender;
import org.apache.logging.log4j.core.util.NetUtils;
import org.apache.logging.log4j.junit.LoggerContextRule;
import org.apache.logging.log4j.test.appender.ListAppender;
import org.apache.logging.log4j.util.Strings;
import org.junit.Before;
import org.junit.ClassRule;
import org.junit.Test;

import static org.hamcrest.Matchers.endsWith;
import static org.hamcrest.Matchers.hasSize;
import static org.junit.Assert.*;

/**
 *
 */
public class HostNameTest {

    private static final String CONFIG = "log4j-test2.xml";
    private ListAppender host;
    private RollingFileAppender hostFile;

    @ClassRule
    public static LoggerContextRule context = new LoggerContextRule(CONFIG);

    @Before
    public void before() {
        host = context.getListAppender("HostTest").clear();
        hostFile = context.getRequiredAppender("HostFile", RollingFileAppender.class);
    }

    @Test
    public void testHostname() {
        final org.apache.logging.log4j.Logger testLogger = context.getLogger("org.apache.logging.log4j.hosttest");
        testLogger.debug("Hello, {}", "World");
        final List<String> msgs = host.getMessages();
        assertThat(msgs, hasSize(1));
        String expected = NetUtils.getLocalHostname() + Strings.LINE_SEPARATOR;
        assertThat(msgs.get(0), endsWith(expected));
        assertNotNull("No Host FileAppender file name", hostFile.getFileName());
        expected = "target/" + NetUtils.getLocalHostname() + ".log";
        String name = hostFile.getFileName();
        assertEquals("Incorrect HostFile FileAppender file name - expected " + expected + " actual - " + name, name,
            expected);
        name = hostFile.getFilePattern();
        assertNotNull("No file pattern", name);
        expected = "target/" + NetUtils.getLocalHostname() + "-%d{MM-dd-yyyy}-%i.log";
        assertEquals("Incorrect HostFile FileAppender file pattern - expected " + expected + " actual - " + name, name,
            expected);

    }
}