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1   /**
2    * Copyright (c) 2014-2017, jcabi.com
3    * All rights reserved.
4    *
5    * Redistribution and use in source and binary forms, with or without
6    * modification, are permitted provided that the following conditions
7    * are met: 1) Redistributions of source code must retain the above
8    * copyright notice, this list of conditions and the following
9    * disclaimer. 2) Redistributions in binary form must reproduce the above
10   * copyright notice, this list of conditions and the following
11   * disclaimer in the documentation and/or other materials provided
12   * with the distribution. 3) Neither the name of the jcabi.com nor
13   * the names of its contributors may be used to endorse or promote
14   * products derived from this software without specific prior written
15   * permission.
16   *
17   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT
19   * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
20   * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
21   * THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
22   * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
24   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
26   * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
28   * OF THE POSSIBILITY OF SUCH DAMAGE.
29   */
30  package com.jcabi.email.stamp;
31  
32  import java.io.UnsupportedEncodingException;
33  import java.util.Properties;
34  import javax.mail.Message;
35  import javax.mail.Session;
36  import javax.mail.internet.MimeMessage;
37  import javax.mail.internet.MimeUtility;
38  import org.hamcrest.MatcherAssert;
39  import org.hamcrest.Matchers;
40  import org.junit.Test;
41  
42  /**
43   * Test case for {@link com.jcabi.email.stamp.StSubject}.
44   *
45   * @author Yegor Bugayenko (yegor256@gmail.com)
46   * @version $Id: 5ad163e196c27fb3fb7042828ea99f735ac0e699 $
47   * @since 1.3.1
48   */
49  public final class StSubjectTest {
50  
51      /**
52       * StSubject can add a subject to the message.
53       * @throws Exception If fails
54       */
55      @Test
56      public void addsSubjectToMessage() throws Exception {
57          final Message msg = new MimeMessage(
58              Session.getDefaultInstance(new Properties())
59          );
60          new StSubject("how are you, друг?").attach(msg);
61          MatcherAssert.assertThat(
62              msg.getSubject(),
63              Matchers.containsString("друг")
64          );
65      }
66  
67      /**
68       * StSubject can add a subject to the message with custom encoding.
69       * @throws Exception If fails
70       */
71      @Test
72      public void addsSubjectToMessageWithCustomEncoding() throws Exception {
73          final String charset = "KOI8-R";
74          final Message msg = new MimeMessage(
75              Session.getDefaultInstance(new Properties())
76          );
77          new StSubject("how are you, приятель?", charset).attach(msg);
78          final String substring = "приятель";
79          MatcherAssert.assertThat(
80              msg.getSubject(),
81              Matchers.containsString(substring)
82          );
83          final String subject = "Subject";
84          MatcherAssert.assertThat(
85              msg.getHeader(subject)[0],
86              Matchers.not(Matchers.containsString("UTF"))
87          );
88          MatcherAssert.assertThat(
89              msg.getHeader(subject)[0],
90              Matchers.containsString(charset)
91          );
92          MatcherAssert.assertThat(
93              msg.getHeader(subject)[0],
94              Matchers.containsString(encodeText(substring, charset))
95          );
96      }
97  
98      /**
99       * Encode text into MIME with encoding.
100      * @param text Text
101      * @param charset Text charset
102      * @return Encoded text
103      * @throws UnsupportedEncodingException if fail
104      */
105     private static String encodeText(
106         final String text,
107         final String charset
108     ) throws UnsupportedEncodingException {
109         final String encoded = MimeUtility.encodeText(text, charset, "Q");
110         final int last = encoded.lastIndexOf('?');
111         final int prev = encoded.lastIndexOf('?', last - 1);
112         return encoded.substring(prev + 1, last);
113     }
114 
115 }