log4j-core/src/test/java/org/apache/logging/log4j/core/pattern/StyleConverterTest.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,
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package org.apache.logging.log4j.core.pattern;

import java.util.List;

import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.core.LoggerContext;
import org.apache.logging.log4j.core.junit.LoggerContextSource;
import org.apache.logging.log4j.core.junit.Named;
import org.apache.logging.log4j.test.appender.ListAppender;
import org.apache.logging.log4j.util.Strings;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.*;

public class StyleConverterTest {

    private static final String EXPECTED =
        "\u001B[1;31mERROR\u001B[m \u001B[1;36mLoggerTest\u001B[m o.a.l.l.c.p.StyleConverterTest org.apache.logging.log4j.core.pattern.StyleConverterTest"
        + Strings.LINE_SEPARATOR;

    @BeforeAll
    public static void beforeClass() {
        System.setProperty("log4j.skipJansi", "false"); // LOG4J2-2087: explicitly enable
    }

    @Test
    @LoggerContextSource("log4j-style.xml")
    public void testReplacement(final LoggerContext context, @Named("List") final ListAppender app) {
        final Logger logger = context.getLogger("LoggerTest");
        logger.error(this.getClass().getName());

        final List<String> msgs = app.getMessages();
        assertNotNull(msgs);
        assertEquals(1, msgs.size(), "Incorrect number of messages. Should be 1 is " + msgs.size());
        assertTrue(msgs.get(0).endsWith(EXPECTED),
                "Replacement failed - expected ending " + EXPECTED + ", actual " + msgs.get(0));
    }

    @Test
    public void testNull() {
        assertNull(StyleConverter.newInstance(null, null));
    }
}