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package javax.mail.internet;
import java.io.OutputStream;
import java.io.StringBufferInputStream;
import java.util.Properties;
import javax.mail.Session;
import javax.mail.MessagingException;
import javax.mail.BodyPart;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import org.junit.*;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
/**
* Test some of the ways you might modify a message that has been
* read from an input stream.
*/
public class ModifyMessageTest {
private static Session s = Session.getInstance(new Properties());
@Test
public void testAddHeader() throws Exception {
MimeMessage m = createMessage();
MimeMultipart mp = (MimeMultipart)m.getContent();
m.setHeader("a", "b");
m.saveChanges();
MimeMessage m2 = new MimeMessage(m);
assertEquals("b", m2.getHeader("a", null));
}
@Test
public void testChangeHeader() throws Exception {
MimeMessage m = createMessage();
MimeMultipart mp = (MimeMultipart)m.getContent();
m.setHeader("Subject", "test");
m.saveChanges();
MimeMessage m2 = new MimeMessage(m);
assertEquals("test", m2.getHeader("Subject", null));
}
@Test
public void testAddContent() throws Exception {
MimeMessage m = createMessage();
MimeMultipart mp = (MimeMultipart)m.getContent();
MimeBodyPart mbp = new MimeBodyPart();
mbp.setText("test");
mp.addBodyPart(mbp);
m.saveChanges();
MimeMessage m2 = new MimeMessage(m);
mp = (MimeMultipart)m2.getContent();
BodyPart bp = mp.getBodyPart(2);
assertEquals("test", bp.getContent());
// make sure nothing else changed
bp = mp.getBodyPart(0);
assertEquals("first part\n", bp.getContent());
bp = mp.getBodyPart(1);
assertEquals("second part\n", bp.getContent());
}
@Test
public void testChangeContent() throws Exception {
MimeMessage m = createMessage();
MimeMultipart mp = (MimeMultipart)m.getContent();
BodyPart bp = mp.getBodyPart(0);
bp.setText("test");
m.saveChanges();
MimeMessage m2 = new MimeMessage(m);
mp = (MimeMultipart)m2.getContent();
bp = mp.getBodyPart(0);
assertEquals("test", bp.getContent());
}
@Test
public void testChangeNestedContent() throws Exception {
MimeMessage m = createNestedMessage();
MimeMultipart mp = (MimeMultipart)m.getContent();
mp = (MimeMultipart)mp.getBodyPart(0).getContent();
BodyPart bp = mp.getBodyPart(0);
bp.setText("test");
m.saveChanges();
MimeMessage m2 = new MimeMessage(m);
mp = (MimeMultipart)m2.getContent();
mp = (MimeMultipart)mp.getBodyPart(0).getContent();
bp = mp.getBodyPart(0);
assertEquals("test", bp.getContent());
// make sure other content is not changed or re-encoded
MimeBodyPart mbp = (MimeBodyPart)mp.getBodyPart(1);
assertEquals("second part\n", mbp.getContent());
assertEquals("quoted-printable", mbp.getEncoding());
mbp = (MimeBodyPart)mp.getBodyPart(2);
assertEquals("third part\n", mbp.getContent());
assertEquals("base64", mbp.getEncoding());
}
private static MimeMessage createMessage() throws MessagingException {
String content =
"Mime-Version: 1.0\n" +
"Subject: Example\n" +
"Content-Type: multipart/mixed; boundary=\"-\"\n" +
"\n" +
"preamble\n" +
"---\n" +
"\n" +
"first part\n" +
"\n" +
"---\n" +
"\n" +
"second part\n" +
"\n" +
"-----\n";
return new MimeMessage(s, new StringBufferInputStream(content));
}
private static MimeMessage createNestedMessage() throws MessagingException {
String content =
"Mime-Version: 1.0\n" +
"Subject: Example\n" +
"Content-Type: multipart/mixed; boundary=\"-\"\n" +
"\n" +
"preamble\n" +
"---\n" +
"Content-Type: multipart/mixed; boundary=\"x\"\n" +
"\n" +
"--x\n" +
"\n" +
"first part\n" +
"\n" +
"--x\n" +
"Content-Transfer-Encoding: quoted-printable\n" +
"\n" +
"second part\n" +
"\n" +
"--x\n" +
"Content-Transfer-Encoding: base64\n" +
"\n" +
"dGhpcmQgcGFydAo=\n" + // "third part\n", base64 encoded
"\n" +
"--x--\n" +
"-----\n";
return new MimeMessage(s, new StringBufferInputStream(content));
}
}