001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017
018package org.apache.commons.codec.net;
019
020import static org.junit.Assert.assertNull;
021import static org.junit.Assert.fail;
022
023import org.apache.commons.codec.CharEncoding;
024import org.apache.commons.codec.DecoderException;
025import org.junit.Test;
026
027/**
028 * RFC 1522 compliant codec test cases
029 *
030 * @version $Id: RFC1522CodecTest.html 891688 2013-12-24 20:49:46Z ggregory $
031 */
032public class RFC1522CodecTest {
033
034    static class RFC1522TestCodec extends RFC1522Codec {
035
036        @Override
037        protected byte[] doDecoding(final byte[] bytes) {
038            return bytes;
039        }
040
041        @Override
042        protected byte[] doEncoding(final byte[] bytes) {
043            return bytes;
044        }
045
046        @Override
047        protected String getEncoding() {
048            return "T";
049        }
050
051    }
052
053    @Test
054    public void testNullInput() throws Exception {
055        final RFC1522TestCodec testcodec = new RFC1522TestCodec();
056        assertNull(testcodec.decodeText(null));
057        assertNull(testcodec.encodeText(null, CharEncoding.UTF_8));
058    }
059
060    private void assertExpectedDecoderException(final String s) throws Exception {
061        final RFC1522TestCodec testcodec = new RFC1522TestCodec();
062        try {
063            testcodec.decodeText(s);
064            fail("DecoderException should have been thrown");
065        } catch (final DecoderException e) {
066            // Expected.
067        }
068    }
069
070    @Test
071    public void testDecodeInvalid() throws Exception {
072        assertExpectedDecoderException("whatever");
073        assertExpectedDecoderException("=?");
074        assertExpectedDecoderException("?=");
075        assertExpectedDecoderException("==");
076        assertExpectedDecoderException("=??=");
077        assertExpectedDecoderException("=?stuff?=");
078        assertExpectedDecoderException("=?UTF-8??=");
079        assertExpectedDecoderException("=?UTF-8?stuff?=");
080        assertExpectedDecoderException("=?UTF-8?T?stuff");
081        assertExpectedDecoderException("=??T?stuff?=");
082        assertExpectedDecoderException("=?UTF-8??stuff?=");
083        assertExpectedDecoderException("=?UTF-8?W?stuff?=");
084    }
085
086}