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MimeMultipartParseTest.java
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MimeMultipartParseTest.java
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/*
* Copyright (c) 1997, 2021 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package com.sun.mail.util;
import java.util.*;
import jakarta.mail.util.ByteArrayDataSource;
import jakarta.mail.util.SharedByteArrayInputStream;
import java.io.*;
import jakarta.mail.*;
import jakarta.mail.event.*;
import jakarta.mail.internet.*;
import jakarta.mail.util.*;
import jakarta.activation.*;
import org.junit.*;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
/*
* Test multipart parsing.
*
* @author Bill Shannon
*/
public class MimeMultipartParseTest {
private static Session session =
Session.getInstance(new Properties(), null);
private static final int maxsize = 10000;
private static final String data =
"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
@Test
public void testParse() throws Exception {
test(false);
}
@Test
public void testParseShared() throws Exception {
test(true);
}
/*
* Test a few potential boundary cases, then test a range.
* This is a compromise to make the run time of this test reasonable,
* although it still takes about 30 seconds, which is on the long side
* for a unit test.
*/
public void test(boolean shared) throws Exception {
testMessage(1, shared);
testMessage(2, shared);
testMessage(62, shared);
testMessage(63, shared);
testMessage(64, shared);
testMessage(65, shared);
testMessage(1023, shared);
testMessage(1024, shared);
testMessage(1025, shared);
for (int size = 8100; size <= maxsize; size++)
testMessage(size, shared);
}
public void testMessage(int size, boolean shared) throws Exception {
//System.out.println("SIZE: " + size);
/*
* Construct a multipart message with a part of the
* given size.
*/
MimeMessage msg = new MimeMessage(session);
msg.setFrom(new InternetAddress("me@example.com"));
msg.setSubject("test multipart parsing");
msg.setSentDate(new Date(0));
MimeBodyPart mbp1 = new MimeBodyPart();
mbp1.setText("main text\n");
MimeBodyPart mbp3 = new MimeBodyPart();
mbp3.setText("end text\n");
MimeBodyPart mbp2 = new MimeBodyPart();
byte[] part = new byte[size];
for (int i = 0; i < size; i++) {
int j = i % 64;
if (j == 62)
part[i] = (byte)'\r';
else if (j == 63)
part[i] = (byte)'\n';
else
part[i] = (byte)data.charAt((j + i / 64) % 62);
}
mbp2.setDataHandler(new DataHandler(
new ByteArrayDataSource(part, "text/plain")));
MimeMultipart mp = new MimeMultipart();
mp.addBodyPart(mbp1);
mp.addBodyPart(mbp2);
mp.addBodyPart(mbp3);
msg.setContent(mp);
msg.saveChanges();
/*
* Write the message out to a byte array.
*/
ByteArrayOutputStream bos = new ByteArrayOutputStream();
msg.writeTo(bos);
bos.close();
byte[] buf = bos.toByteArray();
/*
* Construct a new message to parse the bytes.
*/
msg = new MimeMessage(session, shared ?
new SharedByteArrayInputStream(buf) :
new ByteArrayInputStream(buf));
// verify that the part content is correct
mp = (MimeMultipart)msg.getContent();
mbp2 = (MimeBodyPart)mp.getBodyPart(1);
InputStream is = mbp2.getInputStream();
int k = 0;
int c;
while ((c = is.read()) >= 0) {
int j = k % 64;
byte e;
if (j == 62)
e = (byte)'\r';
else if (j == 63)
e = (byte)'\n';
else
e = (byte)data.charAt((j + k / 64) % 62);
Assert.assertEquals("Size " + size + " at byte " + k, e, c);
k++;
}
Assert.assertEquals("Expected size", size, k);
}
}