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    
018    package org.apache.commons.codec.net;
019    
020    import static org.junit.Assert.assertNull;
021    import static org.junit.Assert.fail;
022    
023    import org.apache.commons.codec.CharEncoding;
024    import org.apache.commons.codec.DecoderException;
025    import org.junit.Test;
026    
027    /**
028     * RFC 1522 compliant codec test cases
029     *
030     * @version $Id: RFC1522CodecTest.html 889935 2013-12-11 05:05:13Z ggregory $
031     */
032    public 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    }