src/test/java/org/apache/james/mime4j/util/MessageUtilsTest.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.james.mime4j.util;

import junit.framework.TestCase;

public class MessageUtilsTest extends TestCase {

    public void testAllASCII() {
        String s = "Like hello and stuff";
        assertTrue(MessageUtils.isASCII(s));
    }

    static final int RUSSIAN_HELLO [] = {
        0x412, 0x441, 0x435, 0x43C, 0x5F, 0x43F, 0x440, 0x438, 
        0x432, 0x435, 0x442 
    }; 
    
    static final int SWISS_GERMAN_HELLO [] = {
        0x47, 0x72, 0xFC, 0x65, 0x7A, 0x69, 0x5F, 0x7A, 0xE4, 0x6D, 0xE4
    };
        
    private static String constructString(int [] unicodeChars) {
        StringBuffer buffer = new StringBuffer();
        if (unicodeChars != null) {
            for (int i = 0; i < unicodeChars.length; i++) {
                buffer.append((char)unicodeChars[i]); 
            }
        }
        return buffer.toString();
    }

    public void testNonASCII() {
        String s = constructString(SWISS_GERMAN_HELLO);
        assertFalse(MessageUtils.isASCII(s));
        s = constructString(RUSSIAN_HELLO);
        assertFalse(MessageUtils.isASCII(s));
    }
    
}