log4j-api/src/test/java/org/apache/logging/log4j/util/Log4jCharsetsPropertiesTest.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.util;

import org.junit.jupiter.api.Test;

import java.nio.charset.Charset;
import java.util.Enumeration;
import java.util.ResourceBundle;

import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertTrue;

public class Log4jCharsetsPropertiesTest {

    /**
     * Tests that we can load all mappings.
     */
    @Test
    public void testLoadAll() {
        ResourceBundle resourceBundle = PropertiesUtil.getCharsetsResourceBundle();
        Enumeration<String> keys = resourceBundle.getKeys();
        while (keys.hasMoreElements()) {
            String key = keys.nextElement();
            assertFalse(
                    Charset.isSupported(key), String.format("The Charset %s is available and should not be mapped", key));
            String value = resourceBundle.getString(key);
            assertTrue(
                    Charset.isSupported(value),
                    String.format("The Charset %s is is not available and is mapped from %s", value, key));
        }
    }
}