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    1   /*
    2    * Licensed to the Apache Software Foundation (ASF) under one or more
    3    * contributor license agreements.  See the NOTICE file distributed with
    4    * this work for additional information regarding copyright ownership.
    5    * The ASF licenses this file to You under the Apache License, Version 2.0
    6    * (the "License"); you may not use this file except in compliance with
    7    * the License.  You may obtain a copy of the License at
    8    *
    9    *      http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the License for the specific language governing permissions and
    15   * limitations under the License.
    16   */
    17  package org.apache.commons.fileupload2.core;
    18
    19  import static org.junit.jupiter.api.Assertions.assertEquals;
    20  import static org.junit.jupiter.api.Assertions.assertThrows;
    21
    22  import java.io.UnsupportedEncodingException;
    23
    24  import org.junit.jupiter.api.Test;
    25
    26  /**
    27   * Use the online <a href="http://dogmamix.com/MimeHeadersDecoder/">MimeHeadersDecoder</a> to validate expected values.
    28   */
    29  public final class MimeUtilityTestCase {
    30
    31      private static void assertEncoded(final String expected, final String encoded) throws Exception {
    32          assertEquals(expected, MimeUtils.decodeText(encoded));
    33      }
    34
    35      @Test
    36      public void testDecodeInvalidEncoding() {
    37          assertThrows(UnsupportedEncodingException.class, () -> MimeUtils.decodeText("=?invalid?B?xyz-?="));
    38      }
    39
    40      @Test
    41      public void testDecodeIso88591Base64Encoded() throws Exception {
    42          assertEncoded("If you can read this you understand the example.",
    43                  "=?ISO-8859-1?B?SWYgeW91IGNhbiByZWFkIHRoaXMgeW8=?= " + "=?ISO-8859-2?B?dSB1bmRlcnN0YW5kIHRoZSBleGFtcGxlLg==?=\"\r\n");
    44      }
    45
    46      @Test
    47      public void testDecodeIso88591Base64EncodedWithWhiteSpace() throws Exception {
    48          assertEncoded("If you can read this you understand the example.",
    49                  "=?ISO-8859-1?B?SWYgeW91IGNhbiByZWFkIHRoaXMgeW8=?=\t  \r\n   =?ISO-8859-" + "2?B?dSB1bmRlcnN0YW5kIHRoZSBleGFtcGxlLg==?=\"\r\n");
    50      }
    51
    52      @Test
    53      public void testDecodeUtf8Base64Encoded() throws Exception {
    54          assertEncoded(" h\u00e9! \u00e0\u00e8\u00f4u !!!", "=?UTF-8?B?IGjDqSEgw6DDqMO0dSAhISE=?=");
    55      }
    56
    57      @Test
    58      public void testDecodeUtf8QuotedPrintableEncoded() throws Exception {
    59          assertEncoded(" h\u00e9! \u00e0\u00e8\u00f4u !!!", "=?UTF-8?Q?_h=C3=A9!_=C3=A0=C3=A8=C3=B4u_!!!?=");
    60      }
    61
    62      @Test
    63      public void testNoNeedToDecode() throws Exception {
    64          assertEncoded("abc", "abc");
    65      }
    66  }