Lib/test/test_email.py

# Copyright (C) 2001,2002 Python Software Foundation
# email package unit tests

import sys
import os
import time
import unittest
import base64
import difflib
from cStringIO import StringIO
from types import StringType, ListType
import warnings

import email

from email.Charset import Charset
from email.Header import Header, decode_header
from email.Parser import Parser, HeaderParser
from email.Generator import Generator, DecodedGenerator
from email.Message import Message
from email.MIMEAudio import MIMEAudio
from email.MIMEText import MIMEText
from email.MIMEImage import MIMEImage
from email.MIMEBase import MIMEBase
from email.MIMEMessage import MIMEMessage
from email import Utils
from email import Errors
from email import Encoders
from email import Iterators
from email import base64MIME
from email import quopriMIME

import test_support
from test_support import findfile, __file__ as test_support_file


NL = '\n'
EMPTYSTRING = ''
SPACE = ' '

# We don't care about DeprecationWarnings
warnings.filterwarnings('ignore', '', DeprecationWarning, __name__)



def openfile(filename):
    path = os.path.join(os.path.dirname(test_support_file), 'data', filename)
    return open(path)



# Base test class
class TestEmailBase(unittest.TestCase):
    def ndiffAssertEqual(self, first, second):
        """Like failUnlessEqual except use ndiff to produce readable output."""
        if first <> second:
            diff = difflib.ndiff(first.splitlines(), second.splitlines())
            fp = StringIO()
            print >> fp, NL, NL.join(diff)
            raise self.failureException, fp.getvalue()

    def _msgobj(self, filename):
        fp = openfile(findfile(filename))
        try:
            msg = email.message_from_file(fp)
        finally:
            fp.close()
        return msg



# Test various aspects of the Message class's API
class TestMessageAPI(TestEmailBase):
    def test_get_all(self):
        eq = self.assertEqual
        msg = self._msgobj('msg_20.txt')
        eq(msg.get_all('cc'), ['ccc@zzz.org', 'ddd@zzz.org', 'eee@zzz.org'])
        eq(msg.get_all('xx', 'n/a'), 'n/a')

    def test_getset_charset(self):
        eq = self.assertEqual
        msg = Message()
        eq(msg.get_charset(), None)
        charset = Charset('iso-8859-1')
        msg.set_charset(charset)
        eq(msg['mime-version'], '1.0')
        eq(msg.get_type(), 'text/plain')
        eq(msg['content-type'], 'text/plain; charset="iso-8859-1"')
        eq(msg.get_param('charset'), 'iso-8859-1')
        eq(msg['content-transfer-encoding'], 'quoted-printable')
        eq(msg.get_charset().input_charset, 'iso-8859-1')
        # Remove the charset
        msg.set_charset(None)
        eq(msg.get_charset(), None)
        eq(msg['content-type'], 'text/plain')
        # Try adding a charset when there's already MIME headers present
        msg = Message()
        msg['MIME-Version'] = '2.0'
        msg['Content-Type'] = 'text/x-weird'
        msg['Content-Transfer-Encoding'] = 'quinted-puntable'
        msg.set_charset(charset)
        eq(msg['mime-version'], '2.0')
        eq(msg['content-type'], 'text/x-weird; charset="iso-8859-1"')
        eq(msg['content-transfer-encoding'], 'quinted-puntable')

    def test_set_charset_from_string(self):
        eq = self.assertEqual
        msg = Message()
        msg.set_charset('us-ascii')
        eq(msg.get_charset().input_charset, 'us-ascii')
        eq(msg['content-type'], 'text/plain; charset="us-ascii"')

    def test_set_payload_with_charset(self):
        msg = Message()
        charset = Charset('iso-8859-1')
        msg.set_payload('This is a string payload', charset)
        self.assertEqual(msg.get_charset().input_charset, 'iso-8859-1')

    def test_get_charsets(self):
        eq = self.assertEqual

        msg = self._msgobj('msg_08.txt')
        charsets = msg.get_charsets()
        eq(charsets, [None, 'us-ascii', 'iso-8859-1', 'iso-8859-2', 'koi8-r'])

        msg = self._msgobj('msg_09.txt')
        charsets = msg.get_charsets('dingbat')
        eq(charsets, ['dingbat', 'us-ascii', 'iso-8859-1', 'dingbat',
                      'koi8-r'])

        msg = self._msgobj('msg_12.txt')
        charsets = msg.get_charsets()
        eq(charsets, [None, 'us-ascii', 'iso-8859-1', None, 'iso-8859-2',
                      'iso-8859-3', 'us-ascii', 'koi8-r'])

    def test_get_filename(self):
        eq = self.assertEqual

        msg = self._msgobj('msg_04.txt')
        filenames = [p.get_filename() for p in msg.get_payload()]
        eq(filenames, ['msg.txt', 'msg.txt'])

        msg = self._msgobj('msg_07.txt')
        subpart = msg.get_payload(1)
        eq(subpart.get_filename(), 'dingusfish.gif')

    def test_get_boundary(self):
        eq = self.assertEqual
        msg = self._msgobj('msg_07.txt')
        # No quotes!
        eq(msg.get_boundary(), 'BOUNDARY')

    def test_set_boundary(self):
        eq = self.assertEqual
        # This one has no existing boundary parameter, but the Content-Type:
        # header appears fifth.
        msg = self._msgobj('msg_01.txt')
        msg.set_boundary('BOUNDARY')
        header, value = msg.items()[4]
        eq(header.lower(), 'content-type')
        eq(value, 'text/plain; charset=us-ascii; boundary="BOUNDARY"')
        # This one has a Content-Type: header, with a boundary, stuck in the
        # middle of its headers.  Make sure the order is preserved; it should
        # be fifth.
        msg = self._msgobj('msg_04.txt')
        msg.set_boundary('BOUNDARY')
        header, value = msg.items()[4]
        eq(header.lower(), 'content-type')
        eq(value, 'multipart/mixed; boundary="BOUNDARY"')
        # And this one has no Content-Type: header at all.
        msg = self._msgobj('msg_03.txt')
        self.assertRaises(Errors.HeaderParseError,
                          msg.set_boundary, 'BOUNDARY')

    def test_get_decoded_payload(self):
        eq = self.assertEqual
        msg = self._msgobj('msg_10.txt')
        # The outer message is a multipart
        eq(msg.get_payload(decode=1), None)
        # Subpart 1 is 7bit encoded
        eq(msg.get_payload(0).get_payload(decode=1),
           'This is a 7bit encoded message.\n')
        # Subpart 2 is quopri
        eq(msg.get_payload(1).get_payload(decode=1),
           '\xa1This is a Quoted Printable encoded message!\n')
        # Subpart 3 is base64
        eq(msg.get_payload(2).get_payload(decode=1),
           'This is a Base64 encoded message.')
        # Subpart 4 has no Content-Transfer-Encoding: header.
        eq(msg.get_payload(3).get_payload(decode=1),
           'This has no Content-Transfer-Encoding: header.\n')

    def test_decoded_generator(self):
        eq = self.assertEqual
        msg = self._msgobj('msg_07.txt')
        fp = openfile('msg_17.txt')
        try:
            text = fp.read()
        finally:
            fp.close()
        s = StringIO()
        g = DecodedGenerator(s)
        g.flatten(msg)
        eq(s.getvalue(), text)

    def test__contains__(self):
        msg = Message()
        msg['From'] = 'Me'
        msg['to'] = 'You'
        # Check for case insensitivity
        self.failUnless('from' in msg)
        self.failUnless('From' in msg)
        self.failUnless('FROM' in msg)
        self.failUnless('to' in msg)
        self.failUnless('To' in msg)
        self.failUnless('TO' in msg)

    def test_as_string(self):
        eq = self.assertEqual
        msg = self._msgobj('msg_01.txt')
        fp = openfile('msg_01.txt')
        try:
            text = fp.read()
        finally:
            fp.close()
        eq(text, msg.as_string())
        fullrepr = str(msg)
        lines = fullrepr.split('\n')
        self.failUnless(lines[0].startswith('From '))
        eq(text, NL.join(lines[1:]))

    def test_bad_param(self):
        msg = email.message_from_string("Content-Type: blarg; baz; boo\n")
        self.assertEqual(msg.get_param('baz'), '')

    def test_missing_filename(self):
        msg = email.message_from_string("From: foo\n")
        self.assertEqual(msg.get_filename(), None)

    def test_bogus_filename(self):
        msg = email.message_from_string(
        "Content-Disposition: blarg; filename\n")
        self.assertEqual(msg.get_filename(), '')

    def test_missing_boundary(self):
        msg = email.message_from_string("From: foo\n")
        self.assertEqual(msg.get_boundary(), None)

    def test_get_params(self):
        eq = self.assertEqual
        msg = email.message_from_string(
            'X-Header: foo=one; bar=two; baz=three\n')
        eq(msg.get_params(header='x-header'),
           [('foo', 'one'), ('bar', 'two'), ('baz', 'three')])
        msg = email.message_from_string(
            'X-Header: foo; bar=one; baz=two\n')
        eq(msg.get_params(header='x-header'),
           [('foo', ''), ('bar', 'one'), ('baz', 'two')])
        eq(msg.get_params(), None)
        msg = email.message_from_string(
            'X-Header: foo; bar="one"; baz=two\n')
        eq(msg.get_params(header='x-header'),
           [('foo', ''), ('bar', 'one'), ('baz', 'two')])

    def test_get_param_liberal(self):
        msg = Message()
        msg['Content-Type'] = 'Content-Type: Multipart/mixed; boundary = "CPIMSSMTPC06p5f3tG"'
        self.assertEqual(msg.get_param('boundary'), 'CPIMSSMTPC06p5f3tG')

    def test_get_param(self):
        eq = self.assertEqual
        msg = email.message_from_string(
            "X-Header: foo=one; bar=two; baz=three\n")
        eq(msg.get_param('bar', header='x-header'), 'two')
        eq(msg.get_param('quuz', header='x-header'), None)
        eq(msg.get_param('quuz'), None)
        msg = email.message_from_string(
            'X-Header: foo; bar="one"; baz=two\n')
        eq(msg.get_param('foo', header='x-header'), '')
        eq(msg.get_param('bar', header='x-header'), 'one')
        eq(msg.get_param('baz', header='x-header'), 'two')
        # XXX: We are not RFC-2045 compliant!  We cannot parse:
        # msg["Content-Type"] = 'text/plain; weird="hey; dolly? [you] @ <\\"home\\">?"'
        # msg.get_param("weird")
        # yet.

    def test_get_param_funky_continuation_lines(self):
        msg = self._msgobj('msg_22.txt')
        self.assertEqual(msg.get_payload(1).get_param('name'), 'wibble.JPG')

    def test_has_key(self):
        msg = email.message_from_string('Header: exists')
        self.failUnless(msg.has_key('header'))
        self.failUnless(msg.has_key('Header'))
        self.failUnless(msg.has_key('HEADER'))
        self.failIf(msg.has_key('headeri'))

    def test_set_param(self):
        eq = self.assertEqual
        msg = Message()
        msg.set_param('charset', 'iso-2022-jp')
        eq(msg.get_param('charset'), 'iso-2022-jp')
        msg.set_param('importance', 'high value')
        eq(msg.get_param('importance'), 'high value')
        eq(msg.get_param('importance', unquote=0), '"high value"')
        eq(msg.get_params(), [('text/plain', ''),
                              ('charset', 'iso-2022-jp'),
                              ('importance', 'high value')])
        eq(msg.get_params(unquote=0), [('text/plain', ''),
                                       ('charset', '"iso-2022-jp"'),
                                       ('importance', '"high value"')])
        msg.set_param('charset', 'iso-9999-xx', header='X-Jimmy')
        eq(msg.get_param('charset', header='X-Jimmy'), 'iso-9999-xx')

    def test_del_param(self):
        eq = self.assertEqual
        msg = self._msgobj('msg_05.txt')
        eq(msg.get_params(),
           [('multipart/report', ''), ('report-type', 'delivery-status'),
            ('boundary', 'D1690A7AC1.996856090/mail.example.com')])
        old_val = msg.get_param("report-type")
        msg.del_param("report-type")
        eq(msg.get_params(),
           [('multipart/report', ''),
            ('boundary', 'D1690A7AC1.996856090/mail.example.com')])
        msg.set_param("report-type", old_val)
        eq(msg.get_params(),
           [('multipart/report', ''),
            ('boundary', 'D1690A7AC1.996856090/mail.example.com'),
            ('report-type', old_val)])

    def test_set_type(self):
        eq = self.assertEqual
        msg = Message()
        self.assertRaises(ValueError, msg.set_type, 'text')
        msg.set_type('text/plain')
        eq(msg['content-type'], 'text/plain')
        msg.set_param('charset', 'us-ascii')
        eq(msg['content-type'], 'text/plain; charset="us-ascii"')
        msg.set_type('text/html')
        eq(msg['content-type'], 'text/html; charset="us-ascii"')



# Test the email.Encoders module
class TestEncoders(unittest.TestCase):
    def test_encode_noop(self):
        eq = self.assertEqual
        msg = MIMEText('hello world', _encoder=Encoders.encode_noop)
        eq(msg.get_payload(), 'hello world\n')

    def test_encode_7bit(self):
        eq = self.assertEqual
        msg = MIMEText('hello world', _encoder=Encoders.encode_7or8bit)
        eq(msg.get_payload(), 'hello world\n')
        eq(msg['content-transfer-encoding'], '7bit')
        msg = MIMEText('hello \x7f world', _encoder=Encoders.encode_7or8bit)
        eq(msg.get_payload(), 'hello \x7f world\n')
        eq(msg['content-transfer-encoding'], '7bit')

    def test_encode_8bit(self):
        eq = self.assertEqual
        msg = MIMEText('hello \x80 world', _encoder=Encoders.encode_7or8bit)
        eq(msg.get_payload(), 'hello \x80 world\n')
        eq(msg['content-transfer-encoding'], '8bit')

    def test_encode_empty_payload(self):
        eq = self.assertEqual
        msg = Message()
        msg.set_charset('us-ascii')
        eq(msg['content-transfer-encoding'], '7bit')

    def test_encode_base64(self):
        eq = self.assertEqual
        msg = MIMEText('hello world', _encoder=Encoders.encode_base64)
        eq(msg.get_payload(), 'aGVsbG8gd29ybGQK\n')
        eq(msg['content-transfer-encoding'], 'base64')

    def test_encode_quoted_printable(self):
        eq = self.assertEqual
        msg = MIMEText('hello world', _encoder=Encoders.encode_quopri)
        eq(msg.get_payload(), 'hello=20world\n')
        eq(msg['content-transfer-encoding'], 'quoted-printable')

    def test_default_cte(self):
        eq = self.assertEqual
        msg = MIMEText('hello world')
        eq(msg['content-transfer-encoding'], '7bit')

    def test_default_cte(self):
        eq = self.assertEqual
        # With no explicit _charset its us-ascii, and all are 7-bit
        msg = MIMEText('hello world')
        eq(msg['content-transfer-encoding'], '7bit')
        # Similar, but with 8-bit data
        msg = MIMEText('hello \xf8 world')
        eq(msg['content-transfer-encoding'], '8bit')
        # And now with a different charset
        msg = MIMEText('hello \xf8 world', _charset='iso-8859-1')
        eq(msg['content-transfer-encoding'], 'quoted-printable')



# Test long header wrapping
class TestLongHeaders(TestEmailBase):
    def test_split_long_continuation(self):
        eq = self.ndiffAssertEqual
        msg = email.message_from_string("""\
Subject: bug demonstration
\t12345678911234567892123456789312345678941234567895123456789612345678971234567898112345678911234567892123456789112345678911234567892123456789
\tmore text

test
""")
        sfp = StringIO()
        g = Generator(sfp)
        g.flatten(msg)
        eq(sfp.getvalue(), """\
Subject: bug demonstration
\t12345678911234567892123456789312345678941234567895123456789612345678971234567898112345678911234567892123456789112345678911234567892123456789
\tmore text

test
""")

    def test_another_long_almost_unsplittable_header(self):
        eq = self.ndiffAssertEqual
        hstr = """\
bug demonstration
\t12345678911234567892123456789312345678941234567895123456789612345678971234567898112345678911234567892123456789112345678911234567892123456789
\tmore text"""
        h = Header(hstr, continuation_ws='\t')
        eq(h.encode(), """\
bug demonstration
\t12345678911234567892123456789312345678941234567895123456789612345678971234567898112345678911234567892123456789112345678911234567892123456789
\tmore text""")
        h = Header(hstr)
        eq(h.encode(), """\
bug demonstration
 12345678911234567892123456789312345678941234567895123456789612345678971234567898112345678911234567892123456789112345678911234567892123456789
 more text""")

    def test_long_nonstring(self):
        eq = self.ndiffAssertEqual
        g = Charset("iso-8859-1")
        cz = Charset("iso-8859-2")
        utf8 = Charset("utf-8")
        g_head = "Die Mieter treten hier ein werden mit einem Foerderband komfortabel den Korridor entlang, an s\xfcdl\xfcndischen Wandgem\xe4lden vorbei, gegen die rotierenden Klingen bef\xf6rdert. "
        cz_head = "Finan\xe8ni metropole se hroutily pod tlakem jejich d\xf9vtipu.. "
        utf8_head = u"\u6b63\u78ba\u306b\u8a00\u3046\u3068\u7ffb\u8a33\u306f\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002\u4e00\u90e8\u306f\u30c9\u30a4\u30c4\u8a9e\u3067\u3059\u304c\u3001\u3042\u3068\u306f\u3067\u305f\u3089\u3081\u3067\u3059\u3002\u5b9f\u969b\u306b\u306f\u300cWenn ist das Nunstuck git und Slotermeyer? Ja! Beiherhund das Oder die Flipperwaldt gersput.\u300d\u3068\u8a00\u3063\u3066\u3044\u307e\u3059\u3002".encode("utf-8")
        h = Header(g_head, g)
        h.append(cz_head, cz)
        h.append(utf8_head, utf8)
        msg = Message()
        msg['Subject'] = h
        sfp = StringIO()
        g = Generator(sfp)
        g.flatten(msg)
        eq(sfp.getvalue(), '''\
Subject: =?iso-8859-1?q?Die_Mieter_treten_hier_ein_werden_mit_eine?=
 =?iso-8859-1?q?m_Foerderband_komfortabel_den_Korridor_ent?=
 =?iso-8859-1?q?lang=2C_an_s=FCdl=FCndischen_Wandgem=E4lden_vorbei?=
 =?iso-8859-1?q?=2C_gegen_die_rotierenden_Klingen_bef=F6rdert=2E_?=
 =?iso-8859-2?q?Finan=E8ni_metropole_se_hroutil?=
 =?iso-8859-2?q?y_pod_tlakem_jejich_d=F9vtipu=2E=2E_?=
 =?utf-8?b?5q2j56K644Gr6KiA44GG44Go57+76Kiz44Gv?=
 =?utf-8?b?44GV44KM44Gm44GE44G+44Gb44KT44CC5LiA?=
 =?utf-8?b?6YOo44Gv44OJ44Kk44OE6Kqe44Gn44GZ44GM?=
 =?utf-8?b?44CB44GC44Go44Gv44Gn44Gf44KJ44KB44Gn?=
 =?utf-8?b?44GZ44CC5a6f6Zqb44Gr44Gv44CMV2VubiBpc3QgZGE=?=
 =?utf-8?b?cyBOdW5zdHVjayBnaXQgdW5k?=
 =?utf-8?b?IFNsb3Rlcm1leWVyPyBKYSEgQmVpaGVyaHVuZCBkYXMgT2Rl?=
 =?utf-8?b?ciBkaWUgRmxpcHBlcndhbGR0?=
 =?utf-8?b?IGdlcnNwdXQu44CN44Go6KiA44Gj44Gm44GE44G+44GZ44CC?=

''')
        eq(h.encode(), '''\
=?iso-8859-1?q?Die_Mieter_treten_hier_ein_werden_mit_eine?=
 =?iso-8859-1?q?m_Foerderband_komfortabel_den_Korridor_ent?=
 =?iso-8859-1?q?lang=2C_an_s=FCdl=FCndischen_Wandgem=E4lden_vorbei?=
 =?iso-8859-1?q?=2C_gegen_die_rotierenden_Klingen_bef=F6rdert=2E_?=
 =?iso-8859-2?q?Finan=E8ni_metropole_se_hroutil?=
 =?iso-8859-2?q?y_pod_tlakem_jejich_d=F9vtipu=2E=2E_?=
 =?utf-8?b?5q2j56K644Gr6KiA44GG44Go57+76Kiz44Gv?=
 =?utf-8?b?44GV44KM44Gm44GE44G+44Gb44KT44CC5LiA?=
 =?utf-8?b?6YOo44Gv44OJ44Kk44OE6Kqe44Gn44GZ44GM?=
 =?utf-8?b?44CB44GC44Go44Gv44Gn44Gf44KJ44KB44Gn?=
 =?utf-8?b?44GZ44CC5a6f6Zqb44Gr44Gv44CMV2VubiBpc3QgZGE=?=
 =?utf-8?b?cyBOdW5zdHVjayBnaXQgdW5k?=
 =?utf-8?b?IFNsb3Rlcm1leWVyPyBKYSEgQmVpaGVyaHVuZCBkYXMgT2Rl?=
 =?utf-8?b?ciBkaWUgRmxpcHBlcndhbGR0?=
 =?utf-8?b?IGdlcnNwdXQu44CN44Go6KiA44Gj44Gm44GE44G+44GZ44CC?=''')

    def test_long_header_encode(self):
        eq = self.ndiffAssertEqual
        h = Header('wasnipoop; giraffes="very-long-necked-animals"; '
                   'spooge="yummy"; hippos="gargantuan"; marshmallows="gooey"',
                   header_name='X-Foobar-Spoink-Defrobnit')
        eq(h.encode(), '''\
wasnipoop; giraffes="very-long-necked-animals";
 spooge="yummy"; hippos="gargantuan"; marshmallows="gooey"''')

    def test_long_header_encode_with_tab_continuation(self):
        eq = self.ndiffAssertEqual
        h = Header('wasnipoop; giraffes="very-long-necked-animals"; '
                   'spooge="yummy"; hippos="gargantuan"; marshmallows="gooey"',
                   header_name='X-Foobar-Spoink-Defrobnit',
                   continuation_ws='\t')
        eq(h.encode(), '''\
wasnipoop; giraffes="very-long-necked-animals";
\tspooge="yummy"; hippos="gargantuan"; marshmallows="gooey"''')

    def test_header_splitter(self):
        eq = self.ndiffAssertEqual
        msg = MIMEText('')
        # It'd be great if we could use add_header() here, but that doesn't
        # guarantee an order of the parameters.
        msg['X-Foobar-Spoink-Defrobnit'] = (
            'wasnipoop; giraffes="very-long-necked-animals"; '
            'spooge="yummy"; hippos="gargantuan"; marshmallows="gooey"')
        sfp = StringIO()
        g = Generator(sfp)
        g.flatten(msg)
        eq(sfp.getvalue(), '''\
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
X-Foobar-Spoink-Defrobnit: wasnipoop; giraffes="very-long-necked-animals";
\tspooge="yummy"; hippos="gargantuan"; marshmallows="gooey"

''')

    def test_no_semis_header_splitter(self):
        eq = self.ndiffAssertEqual
        msg = Message()
        msg['From'] = 'test@dom.ain'
        msg['References'] = SPACE.join(['<%d@dom.ain>' % i for i in range(10)])
        msg.set_payload('Test')
        sfp = StringIO()
        g = Generator(sfp)
        g.flatten(msg)
        eq(sfp.getvalue(), """\
From: test@dom.ain
References: <0@dom.ain> <1@dom.ain> <2@dom.ain> <3@dom.ain> <4@dom.ain>
\t<5@dom.ain> <6@dom.ain> <7@dom.ain> <8@dom.ain> <9@dom.ain>

Test""")

    def test_no_split_long_header(self):
        eq = self.ndiffAssertEqual
        hstr = 'References: ' + 'x' * 80
        h = Header(hstr, continuation_ws='\t')
        eq(h.encode(), """\
References: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx""")

    def test_splitting_multiple_long_lines(self):
        eq = self.ndiffAssertEqual
        hstr = """\
from babylon.socal-raves.org (localhost [127.0.0.1]); by babylon.socal-raves.org (Postfix) with ESMTP id B570E51B81; for <mailman-admin@babylon.socal-raves.org>; Sat, 2 Feb 2002 17:00:06 -0800 (PST)
\tfrom babylon.socal-raves.org (localhost [127.0.0.1]); by babylon.socal-raves.org (Postfix) with ESMTP id B570E51B81; for <mailman-admin@babylon.socal-raves.org>; Sat, 2 Feb 2002 17:00:06 -0800 (PST)
\tfrom babylon.socal-raves.org (localhost [127.0.0.1]); by babylon.socal-raves.org (Postfix) with ESMTP id B570E51B81; for <mailman-admin@babylon.socal-raves.org>; Sat, 2 Feb 2002 17:00:06 -0800 (PST)
"""
        h = Header(hstr, continuation_ws='\t')
        eq(h.encode(), """\
from babylon.socal-raves.org (localhost [127.0.0.1]);
\tby babylon.socal-raves.org (Postfix) with ESMTP id B570E51B81;
\tfor <mailman-admin@babylon.socal-raves.org>;
\tSat, 2 Feb 2002 17:00:06 -0800 (PST)
\tfrom babylon.socal-raves.org (localhost [127.0.0.1]);
\tby babylon.socal-raves.org (Postfix) with ESMTP id B570E51B81;
\tfor <mailman-admin@babylon.socal-raves.org>;
\tSat, 2 Feb 2002 17:00:06 -0800 (PST)
\tfrom babylon.socal-raves.org (localhost [127.0.0.1]);
\tby babylon.socal-raves.org (Postfix) with ESMTP id B570E51B81;
\tfor <mailman-admin@babylon.socal-raves.org>;
\tSat, 2 Feb 2002 17:00:06 -0800 (PST)""")



# Test mangling of "From " lines in the body of a message
class TestFromMangling(unittest.TestCase):
    def setUp(self):
        self.msg = Message()
        self.msg['From'] = 'aaa@bbb.org'
        self.msg.set_payload("""\
From the desk of A.A.A.:
Blah blah blah
""")

    def test_mangled_from(self):
        s = StringIO()
        g = Generator(s, mangle_from_=1)
        g.flatten(self.msg)
        self.assertEqual(s.getvalue(), """\
From: aaa@bbb.org

>From the desk of A.A.A.:
Blah blah blah
""")

    def test_dont_mangle_from(self):
        s = StringIO()
        g = Generator(s, mangle_from_=0)
        g.flatten(self.msg)
        self.assertEqual(s.getvalue(), """\
From: aaa@bbb.org

From the desk of A.A.A.:
Blah blah blah
""")



# Test the basic MIMEAudio class
class TestMIMEAudio(unittest.TestCase):
    def setUp(self):
        # In Python, audiotest.au lives in Lib/test not Lib/test/data
        fp = open(findfile('audiotest.au'))
        try:
            self._audiodata = fp.read()
        finally:
            fp.close()
        self._au = MIMEAudio(self._audiodata)

    def test_guess_minor_type(self):
        self.assertEqual(self._au.get_type(), 'audio/basic')

    def test_encoding(self):
        payload = self._au.get_payload()
        self.assertEqual(base64.decodestring(payload), self._audiodata)

    def checkSetMinor(self):
        au = MIMEAudio(self._audiodata, 'fish')
        self.assertEqual(im.get_type(), 'audio/fish')

    def test_custom_encoder(self):
        eq = self.assertEqual
        def encoder(msg):
            orig = msg.get_payload()
            msg.set_payload(0)
            msg['Content-Transfer-Encoding'] = 'broken64'
        au = MIMEAudio(self._audiodata, _encoder=encoder)
        eq(au.get_payload(), 0)
        eq(au['content-transfer-encoding'], 'broken64')

    def test_add_header(self):
        eq = self.assertEqual
        unless = self.failUnless
        self._au.add_header('Content-Disposition', 'attachment',
                            filename='audiotest.au')
        eq(self._au['content-disposition'],
           'attachment; filename="audiotest.au"')
        eq(self._au.get_params(header='content-disposition'),
           [('attachment', ''), ('filename', 'audiotest.au')])
        eq(self._au.get_param('filename', header='content-disposition'),
           'audiotest.au')
        missing = []
        eq(self._au.get_param('attachment', header='content-disposition'), '')
        unless(self._au.get_param('foo', failobj=missing,
                                  header='content-disposition') is missing)
        # Try some missing stuff
        unless(self._au.get_param('foobar', missing) is missing)
        unless(self._au.get_param('attachment', missing,
                                  header='foobar') is missing)



# Test the basic MIMEImage class
class TestMIMEImage(unittest.TestCase):
    def setUp(self):
        fp = openfile('PyBanner048.gif')
        try:
            self._imgdata = fp.read()
        finally:
            fp.close()
        self._im = MIMEImage(self._imgdata)

    def test_guess_minor_type(self):
        self.assertEqual(self._im.get_type(), 'image/gif')

    def test_encoding(self):
        payload = self._im.get_payload()
        self.assertEqual(base64.decodestring(payload), self._imgdata)

    def checkSetMinor(self):
        im = MIMEImage(self._imgdata, 'fish')
        self.assertEqual(im.get_type(), 'image/fish')

    def test_custom_encoder(self):
        eq = self.assertEqual
        def encoder(msg):
            orig = msg.get_payload()
            msg.set_payload(0)
            msg['Content-Transfer-Encoding'] = 'broken64'
        im = MIMEImage(self._imgdata, _encoder=encoder)
        eq(im.get_payload(), 0)
        eq(im['content-transfer-encoding'], 'broken64')

    def test_add_header(self):
        eq = self.assertEqual
        unless = self.failUnless
        self._im.add_header('Content-Disposition', 'attachment',
                            filename='dingusfish.gif')
        eq(self._im['content-disposition'],
           'attachment; filename="dingusfish.gif"')
        eq(self._im.get_params(header='content-disposition'),
           [('attachment', ''), ('filename', 'dingusfish.gif')])
        eq(self._im.get_param('filename', header='content-disposition'),
           'dingusfish.gif')
        missing = []
        eq(self._im.get_param('attachment', header='content-disposition'), '')
        unless(self._im.get_param('foo', failobj=missing,
                                  header='content-disposition') is missing)
        # Try some missing stuff
        unless(self._im.get_param('foobar', missing) is missing)
        unless(self._im.get_param('attachment', missing,
                                  header='foobar') is missing)



# Test the basic MIMEText class
class TestMIMEText(unittest.TestCase):
    def setUp(self):
        self._msg = MIMEText('hello there')

    def test_types(self):
        eq = self.assertEqual
        unless = self.failUnless
        eq(self._msg.get_type(), 'text/plain')
        eq(self._msg.get_param('charset'), 'us-ascii')
        missing = []
        unless(self._msg.get_param('foobar', missing) is missing)
        unless(self._msg.get_param('charset', missing, header='foobar')
               is missing)

    def test_payload(self):
        self.assertEqual(self._msg.get_payload(), 'hello there\n')
        self.failUnless(not self._msg.is_multipart())

    def test_charset(self):
        eq = self.assertEqual
        msg = MIMEText('hello there', _charset='us-ascii')
        eq(msg.get_charset().input_charset, 'us-ascii')
        eq(msg['content-type'], 'text/plain; charset="us-ascii"')



# Test a more complicated multipart/mixed type message
class TestMultipartMixed(unittest.TestCase):
    def setUp(self):
        fp = openfile('PyBanner048.gif')
        try:
            data = fp.read()
        finally:
            fp.close()

        container = MIMEBase('multipart', 'mixed', boundary='BOUNDARY')
        image = MIMEImage(data, name='dingusfish.gif')
        image.add_header('content-disposition', 'attachment',
                         filename='dingusfish.gif')
        intro = MIMEText('''\
Hi there,

This is the dingus fish.
''')
        container.attach(intro)
        container.attach(image)
        container['From'] = 'Barry <barry@digicool.com>'
        container['To'] = 'Dingus Lovers <cravindogs@cravindogs.com>'
        container['Subject'] = 'Here is your dingus fish'

        now = 987809702.54848599
        timetuple = time.localtime(now)
        if timetuple[-1] == 0:
            tzsecs = time.timezone
        else:
            tzsecs = time.altzone
        if tzsecs > 0:
            sign = '-'
        else:
            sign = '+'
        tzoffset = ' %s%04d' % (sign, tzsecs / 36)
        container['Date'] = time.strftime(
            '%a, %d %b %Y %H:%M:%S',
            time.localtime(now)) + tzoffset
        self._msg = container
        self._im = image
        self._txt = intro

    def test_hierarchy(self):
        # convenience
        eq = self.assertEqual
        unless = self.failUnless
        raises = self.assertRaises
        # tests
        m = self._msg
        unless(m.is_multipart())
        eq(m.get_type(), 'multipart/mixed')
        eq(len(m.get_payload()), 2)
        raises(IndexError, m.get_payload, 2)
        m0 = m.get_payload(0)
        m1 = m.get_payload(1)
        unless(m0 is self._txt)
        unless(m1 is self._im)
        eq(m.get_payload(), [m0, m1])
        unless(not m0.is_multipart())
        unless(not m1.is_multipart())

    def test_no_parts_in_a_multipart(self):
        outer = MIMEBase('multipart', 'mixed')
        outer['Subject'] = 'A subject'
        outer['To'] = 'aperson@dom.ain'
        outer['From'] = 'bperson@dom.ain'
        outer.preamble = ''
        outer.epilogue = ''
        outer.set_boundary('BOUNDARY')
        msg = MIMEText('hello world')
        self.assertEqual(outer.as_string(), '''\
Content-Type: multipart/mixed; boundary="BOUNDARY"
MIME-Version: 1.0
Subject: A subject
To: aperson@dom.ain
From: bperson@dom.ain

--BOUNDARY


--BOUNDARY--
''')

    def test_one_part_in_a_multipart(self):
        outer = MIMEBase('multipart', 'mixed')
        outer['Subject'] = 'A subject'
        outer['To'] = 'aperson@dom.ain'
        outer['From'] = 'bperson@dom.ain'
        outer.preamble = ''
        outer.epilogue = ''
        outer.set_boundary('BOUNDARY')
        msg = MIMEText('hello world')
        outer.attach(msg)
        self.assertEqual(outer.as_string(), '''\
Content-Type: multipart/mixed; boundary="BOUNDARY"
MIME-Version: 1.0
Subject: A subject
To: aperson@dom.ain
From: bperson@dom.ain

--BOUNDARY
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit

hello world

--BOUNDARY--
''')

    def test_seq_parts_in_a_multipart(self):
        outer = MIMEBase('multipart', 'mixed')
        outer['Subject'] = 'A subject'
        outer['To'] = 'aperson@dom.ain'
        outer['From'] = 'bperson@dom.ain'
        outer.preamble = ''
        outer.epilogue = ''
        msg = MIMEText('hello world')
        outer.attach(msg)
        outer.set_boundary('BOUNDARY')
        self.assertEqual(outer.as_string(), '''\
Content-Type: multipart/mixed; boundary="BOUNDARY"
MIME-Version: 1.0
Subject: A subject
To: aperson@dom.ain
From: bperson@dom.ain

--BOUNDARY
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit

hello world

--BOUNDARY--
''')



# Test some badly formatted messages
class TestNonConformant(TestEmailBase):
    def test_parse_missing_minor_type(self):
        eq = self.assertEqual
        msg = self._msgobj('msg_14.txt')
        eq(msg.get_type(), 'text')
        eq(msg.get_main_type(), 'text')
        self.failUnless(msg.get_subtype() is None)

    def test_bogus_boundary(self):
        fp = openfile(findfile('msg_15.txt'))
        try:
            data = fp.read()
        finally:
            fp.close()
        p = Parser()
        # Note, under a future non-strict parsing mode, this would parse the
        # message into the intended message tree.
        self.assertRaises(Errors.BoundaryError, p.parsestr, data)

    def test_multipart_no_boundary(self):
        fp = openfile(findfile('msg_25.txt'))
        self.assertRaises(Errors.BoundaryError, email.message_from_file, fp)



# Test RFC 2047 header encoding and decoding
class TestRFC2047(unittest.TestCase):
    def test_iso_8859_1(self):
        eq = self.assertEqual
        s = '=?iso-8859-1?q?this=20is=20some=20text?='
        eq(Utils.decode(s), 'this is some text')
        s = '=?ISO-8859-1?Q?Keld_J=F8rn_Simonsen?='
        eq(Utils.decode(s), u'Keld J\xf8rn Simonsen')
        s = '=?ISO-8859-1?B?SWYgeW91IGNhbiByZWFkIHRoaXMgeW8=?=' \
            '=?ISO-8859-2?B?dSB1bmRlcnN0YW5kIHRoZSBleGFtcGxlLg==?='
        eq(Utils.decode(s), 'If you can read this you understand the example.')
        s = '=?iso-8859-8?b?7eXs+SDv4SDp7Oj08A==?='
        eq(Utils.decode(s),
           u'\u05dd\u05d5\u05dc\u05e9 \u05df\u05d1 \u05d9\u05dc\u05d8\u05e4\u05e0')
        s = '=?iso-8859-1?q?this=20is?= =?iso-8859-1?q?some=20text?='
        eq(Utils.decode(s), u'this issome text')
        s = '=?iso-8859-1?q?this=20is_?= =?iso-8859-1?q?some=20text?='
        eq(Utils.decode(s), u'this is some text')

    def test_encode_header(self):
        eq = self.assertEqual
        s = 'this is some text'
        eq(Utils.encode(s), '=?iso-8859-1?q?this=20is=20some=20text?=')
        s = 'Keld_J\xf8rn_Simonsen'
        eq(Utils.encode(s), '=?iso-8859-1?q?Keld_J=F8rn_Simonsen?=')
        s1 = 'If you can read this yo'
        s2 = 'u understand the example.'
        eq(Utils.encode(s1, encoding='b'),
           '=?iso-8859-1?b?SWYgeW91IGNhbiByZWFkIHRoaXMgeW8=?=')
        eq(Utils.encode(s2, charset='iso-8859-2', encoding='b'),
           '=?iso-8859-2?b?dSB1bmRlcnN0YW5kIHRoZSBleGFtcGxlLg==?=')



# Test the MIMEMessage class
class TestMIMEMessage(TestEmailBase):
    def setUp(self):
        fp = openfile('msg_11.txt')
        self._text = fp.read()
        fp.close()

    def test_type_error(self):
        self.assertRaises(TypeError, MIMEMessage, 'a plain string')

    def test_valid_argument(self):
        eq = self.assertEqual
        unless = self.failUnless
        subject = 'A sub-message'
        m = Message()
        m['Subject'] = subject
        r = MIMEMessage(m)
        eq(r.get_type(), 'message/rfc822')
        payload = r.get_payload()
        unless(type(payload), ListType)
        eq(len(payload), 1)
        subpart = payload[0]
        unless(subpart is m)
        eq(subpart['subject'], subject)

    def test_bad_multipart(self):
        eq = self.assertEqual
        msg1 = Message()
        msg1['Subject'] = 'subpart 1'
        msg2 = Message()
        msg2['Subject'] = 'subpart 2'
        r = MIMEMessage(msg1)
        self.assertRaises(Errors.MultipartConversionError, r.attach, msg2)

    def test_generate(self):
        # First craft the message to be encapsulated
        m = Message()
        m['Subject'] = 'An enclosed message'
        m.set_payload('Here is the body of the message.\n')
        r = MIMEMessage(m)
        r['Subject'] = 'The enclosing message'
        s = StringIO()
        g = Generator(s)
        g.flatten(r)
        self.assertEqual(s.getvalue(), """\
Content-Type: message/rfc822
MIME-Version: 1.0
Subject: The enclosing message

Subject: An enclosed message

Here is the body of the message.
""")

    def test_parse_message_rfc822(self):
        eq = self.assertEqual
        unless = self.failUnless
        msg = self._msgobj('msg_11.txt')
        eq(msg.get_type(), 'message/rfc822')
        payload = msg.get_payload()
        unless(isinstance(payload, ListType))
        eq(len(payload), 1)
        submsg = payload[0]
        self.failUnless(isinstance(submsg, Message))
        eq(submsg['subject'], 'An enclosed message')
        eq(submsg.get_payload(), 'Here is the body of the message.\n')

    def test_dsn(self):
        eq = self.assertEqual
        unless = self.failUnless
        # msg 16 is a Delivery Status Notification, see RFC XXXX
        msg = self._msgobj('msg_16.txt')
        eq(msg.get_type(), 'multipart/report')
        unless(msg.is_multipart())
        eq(len(msg.get_payload()), 3)
        # Subpart 1 is a text/plain, human readable section
        subpart = msg.get_payload(0)
        eq(subpart.get_type(), 'text/plain')
        eq(subpart.get_payload(), """\
This report relates to a message you sent with the following header fields:

  Message-id: <002001c144a6$8752e060$56104586@oxy.edu>
  Date: Sun, 23 Sep 2001 20:10:55 -0700
  From: "Ian T. Henry" <henryi@oxy.edu>
  To: SoCal Raves <scr@socal-raves.org>
  Subject: [scr] yeah for Ians!!

Your message cannot be delivered to the following recipients:

  Recipient address: jangel1@cougar.noc.ucla.edu
  Reason: recipient reached disk quota

""")
        # Subpart 2 contains the machine parsable DSN information.  It
        # consists of two blocks of headers, represented by two nested Message
        # objects.
        subpart = msg.get_payload(1)
        eq(subpart.get_type(), 'message/delivery-status')
        eq(len(subpart.get_payload()), 2)
        # message/delivery-status should treat each block as a bunch of
        # headers, i.e. a bunch of Message objects.
        dsn1 = subpart.get_payload(0)
        unless(isinstance(dsn1, Message))
        eq(dsn1['original-envelope-id'], '0GK500B4HD0888@cougar.noc.ucla.edu')
        eq(dsn1.get_param('dns', header='reporting-mta'), '')
        # Try a missing one <wink>
        eq(dsn1.get_param('nsd', header='reporting-mta'), None)
        dsn2 = subpart.get_payload(1)
        unless(isinstance(dsn2, Message))
        eq(dsn2['action'], 'failed')
        eq(dsn2.get_params(header='original-recipient'),
           [('rfc822', ''), ('jangel1@cougar.noc.ucla.edu', '')])
        eq(dsn2.get_param('rfc822', header='final-recipient'), '')
        # Subpart 3 is the original message
        subpart = msg.get_payload(2)
        eq(subpart.get_type(), 'message/rfc822')
        payload = subpart.get_payload()
        unless(isinstance(payload, ListType))
        eq(len(payload), 1)
        subsubpart = payload[0]
        unless(isinstance(subsubpart, Message))
        eq(subsubpart.get_type(), 'text/plain')
        eq(subsubpart['message-id'],
           '<002001c144a6$8752e060$56104586@oxy.edu>')

    def test_epilogue(self):
        fp = openfile('msg_21.txt')
        try:
            text = fp.read()
        finally:
            fp.close()
        msg = Message()
        msg['From'] = 'aperson@dom.ain'
        msg['To'] = 'bperson@dom.ain'
        msg['Subject'] = 'Test'
        msg.preamble = 'MIME message\n'
        msg.epilogue = 'End of MIME message\n'
        msg1 = MIMEText('One')
        msg2 = MIMEText('Two')
        msg.add_header('Content-Type', 'multipart/mixed', boundary='BOUNDARY')
        msg.attach(msg1)
        msg.attach(msg2)
        sfp = StringIO()
        g = Generator(sfp)
        g.flatten(msg)
        self.assertEqual(sfp.getvalue(), text)



# A general test of parser->model->generator idempotency.  IOW, read a message
# in, parse it into a message object tree, then without touching the tree,
# regenerate the plain text.  The original text and the transformed text
# should be identical.  Note: that we ignore the Unix-From since that may
# contain a changed date.
class TestIdempotent(TestEmailBase):
    def _msgobj(self, filename):
        fp = openfile(filename)
        try:
            data = fp.read()
        finally:
            fp.close()
        msg = email.message_from_string(data)
        return msg, data

    def _idempotent(self, msg, text):
        eq = self.ndiffAssertEqual
        s = StringIO()
        g = Generator(s, maxheaderlen=0)
        g.flatten(msg)
        eq(text, s.getvalue())

    def test_parse_text_message(self):
        eq = self.assertEquals
        msg, text = self._msgobj('msg_01.txt')
        eq(msg.get_type(), 'text/plain')
        eq(msg.get_main_type(), 'text')
        eq(msg.get_subtype(), 'plain')
        eq(msg.get_params()[1], ('charset', 'us-ascii'))
        eq(msg.get_param('charset'), 'us-ascii')
        eq(msg.preamble, None)
        eq(msg.epilogue, None)
        self._idempotent(msg, text)

    def test_parse_untyped_message(self):
        eq = self.assertEquals
        msg, text = self._msgobj('msg_03.txt')
        eq(msg.get_type(), None)
        eq(msg.get_params(), None)
        eq(msg.get_param('charset'), None)
        self._idempotent(msg, text)

    def test_simple_multipart(self):
        msg, text = self._msgobj('msg_04.txt')
        self._idempotent(msg, text)

    def test_MIME_digest(self):
        msg, text = self._msgobj('msg_02.txt')
        self._idempotent(msg, text)

##    def test_MIME_digest_with_part_headers(self):
##        msg, text = self._msgobj('msg_28.txt')
##        self._idempotent(msg, text)

    def test_mixed_with_image(self):
        msg, text = self._msgobj('msg_06.txt')
        self._idempotent(msg, text)

    def test_multipart_report(self):
        msg, text = self._msgobj('msg_05.txt')
        self._idempotent(msg, text)

    def test_dsn(self):
        msg, text = self._msgobj('msg_16.txt')
        self._idempotent(msg, text)

    def test_preamble_epilogue(self):
        msg, text = self._msgobj('msg_21.txt')
        self._idempotent(msg, text)

    def test_multipart_one_part(self):
        msg, text = self._msgobj('msg_23.txt')
        self._idempotent(msg, text)

    def test_multipart_no_parts(self):
        msg, text = self._msgobj('msg_24.txt')
        self._idempotent(msg, text)

    def test_content_type(self):
        eq = self.assertEquals
        unless = self.failUnless
        # Get a message object and reset the seek pointer for other tests
        msg, text = self._msgobj('msg_05.txt')
        eq(msg.get_type(), 'multipart/report')
        # Test the Content-Type: parameters
        params = {}
        for pk, pv in msg.get_params():
            params[pk] = pv
        eq(params['report-type'], 'delivery-status')
        eq(params['boundary'], 'D1690A7AC1.996856090/mail.example.com')
        eq(msg.preamble, 'This is a MIME-encapsulated message.\n\n')
        eq(msg.epilogue, '\n\n')
        eq(len(msg.get_payload()), 3)
        # Make sure the subparts are what we expect
        msg1 = msg.get_payload(0)
        eq(msg1.get_type(), 'text/plain')
        eq(msg1.get_payload(), 'Yadda yadda yadda\n')
        msg2 = msg.get_payload(1)
        eq(msg2.get_type(), None)
        eq(msg2.get_payload(), 'Yadda yadda yadda\n')
        msg3 = msg.get_payload(2)
        eq(msg3.get_type(), 'message/rfc822')
        self.failUnless(isinstance(msg3, Message))
        payload = msg3.get_payload()
        unless(isinstance(payload, ListType))
        eq(len(payload), 1)
        msg4 = payload[0]
        unless(isinstance(msg4, Message))
        eq(msg4.get_payload(), 'Yadda yadda yadda\n')

    def test_parser(self):
        eq = self.assertEquals
        unless = self.failUnless
        msg, text = self._msgobj('msg_06.txt')
        # Check some of the outer headers
        eq(msg.get_type(), 'message/rfc822')
        # Make sure the payload is a list of exactly one sub-Message, and that
        # that submessage has a type of text/plain
        payload = msg.get_payload()
        unless(isinstance(payload, ListType))
        eq(len(payload), 1)
        msg1 = payload[0]
        self.failUnless(isinstance(msg1, Message))
        eq(msg1.get_type(), 'text/plain')
        self.failUnless(isinstance(msg1.get_payload(), StringType))
        eq(msg1.get_payload(), '\n')


# Test various other bits of the package's functionality
class TestMiscellaneous(unittest.TestCase):
    def test_message_from_string(self):
        fp = openfile('msg_01.txt')
        try:
            text = fp.read()
        finally:
            fp.close()
        msg = email.message_from_string(text)
        s = StringIO()
        # Don't wrap/continue long headers since we're trying to test
        # idempotency.
        g = Generator(s, maxheaderlen=0)
        g.flatten(msg)
        self.assertEqual(text, s.getvalue())

    def test_message_from_file(self):
        fp = openfile('msg_01.txt')
        try:
            text = fp.read()
            fp.seek(0)
            msg = email.message_from_file(fp)
            s = StringIO()
            # Don't wrap/continue long headers since we're trying to test
            # idempotency.
            g = Generator(s, maxheaderlen=0)
            g.flatten(msg)
            self.assertEqual(text, s.getvalue())
        finally:
            fp.close()

    def test_message_from_string_with_class(self):
        unless = self.failUnless
        fp = openfile('msg_01.txt')
        try:
            text = fp.read()
        finally:
            fp.close()
        # Create a subclass
        class MyMessage(Message):
            pass

        msg = email.message_from_string(text, MyMessage)
        unless(isinstance(msg, MyMessage))
        # Try something more complicated
        fp = openfile('msg_02.txt')
        try:
            text = fp.read()
        finally:
            fp.close()
        msg = email.message_from_string(text, MyMessage)
        for subpart in msg.walk():
            unless(isinstance(subpart, MyMessage))

    def test_message_from_file_with_class(self):
        unless = self.failUnless
        # Create a subclass
        class MyMessage(Message):
            pass

        fp = openfile('msg_01.txt')
        try:
            msg = email.message_from_file(fp, MyMessage)
        finally:
            fp.close()
        unless(isinstance(msg, MyMessage))
        # Try something more complicated
        fp = openfile('msg_02.txt')
        try:
            msg = email.message_from_file(fp, MyMessage)
        finally:
            fp.close()
        for subpart in msg.walk():
            unless(isinstance(subpart, MyMessage))

    def test__all__(self):
        module = __import__('email')
        all = module.__all__
        all.sort()
        self.assertEqual(all, ['Charset', 'Encoders', 'Errors', 'Generator',
                               'Header', 'Iterators', 'MIMEAudio',
                               'MIMEBase', 'MIMEImage', 'MIMEMessage',
                               'MIMEText', 'Message', 'Parser',
                               'Utils', 'base64MIME',
                               'message_from_file', 'message_from_string',
                               'quopriMIME'])

    def test_formatdate(self):
        now = time.time()
        self.assertEqual(Utils.parsedate(Utils.formatdate(now))[:6],
                         time.gmtime(now)[:6])

    def test_formatdate_localtime(self):
        now = time.time()
        self.assertEqual(
            Utils.parsedate(Utils.formatdate(now, localtime=1))[:6],
            time.localtime(now)[:6])

    def test_parsedate_none(self):
        self.assertEqual(Utils.parsedate(''), None)

    def test_parseaddr_empty(self):
        self.assertEqual(Utils.parseaddr('<>'), ('', ''))
        self.assertEqual(Utils.formataddr(Utils.parseaddr('<>')), '')

    def test_noquote_dump(self):
        self.assertEqual(
            Utils.formataddr(('A Silly Person', 'person@dom.ain')),
            'A Silly Person <person@dom.ain>')

    def test_escape_dump(self):
        self.assertEqual(
            Utils.formataddr(('A (Very) Silly Person', 'person@dom.ain')),
            r'"A \(Very\) Silly Person" <person@dom.ain>')
        a = r'A \(Special\) Person'
        b = 'person@dom.ain'
        self.assertEqual(Utils.parseaddr(Utils.formataddr((a, b))), (a, b))

    def test_quote_dump(self):
        self.assertEqual(
            Utils.formataddr(('A Silly; Person', 'person@dom.ain')),
            r'"A Silly; Person" <person@dom.ain>')

    def test_fix_eols(self):
        eq = self.assertEqual
        eq(Utils.fix_eols('hello'), 'hello')
        eq(Utils.fix_eols('hello\n'), 'hello\r\n')
        eq(Utils.fix_eols('hello\r'), 'hello\r\n')
        eq(Utils.fix_eols('hello\r\n'), 'hello\r\n')
        eq(Utils.fix_eols('hello\n\r'), 'hello\r\n\r\n')

    def test_charset_richcomparisons(self):
        eq = self.assertEqual
        ne = self.failIfEqual
        cset1 = Charset()
        cset2 = Charset()
        eq(cset1, 'us-ascii')
        eq(cset1, 'US-ASCII')
        eq(cset1, 'Us-AsCiI')
        eq('us-ascii', cset1)
        eq('US-ASCII', cset1)
        eq('Us-AsCiI', cset1)
        ne(cset1, 'usascii')
        ne(cset1, 'USASCII')
        ne(cset1, 'UsAsCiI')
        ne('usascii', cset1)
        ne('USASCII', cset1)
        ne('UsAsCiI', cset1)
        eq(cset1, cset2)
        eq(cset2, cset1)

    def test_getaddresses(self):
        eq = self.assertEqual
        eq(Utils.getaddresses(['aperson@dom.ain (Al Person)',
                               'Bud Person <bperson@dom.ain>']),
           [('Al Person', 'aperson@dom.ain'),
            ('Bud Person', 'bperson@dom.ain')])



# Test the iterator/generators
class TestIterators(TestEmailBase):
    def test_body_line_iterator(self):
        eq = self.assertEqual
        # First a simple non-multipart message
        msg = self._msgobj('msg_01.txt')
        it = Iterators.body_line_iterator(msg)
        lines = list(it)
        eq(len(lines), 6)
        eq(EMPTYSTRING.join(lines), msg.get_payload())
        # Now a more complicated multipart
        msg = self._msgobj('msg_02.txt')
        it = Iterators.body_line_iterator(msg)
        lines = list(it)
        eq(len(lines), 43)
        eq(EMPTYSTRING.join(lines), openfile('msg_19.txt').read())

    def test_typed_subpart_iterator(self):
        eq = self.assertEqual
        msg = self._msgobj('msg_04.txt')
        it = Iterators.typed_subpart_iterator(msg, 'text')
        lines = []
        subparts = 0
        for subpart in it:
            subparts += 1
            lines.append(subpart.get_payload())
        eq(subparts, 2)
        eq(EMPTYSTRING.join(lines), """\
a simple kind of mirror
to reflect upon our own
a simple kind of mirror
to reflect upon our own
""")

    def test_typed_subpart_iterator_default_type(self):
        eq = self.assertEqual
        msg = self._msgobj('msg_03.txt')
        it = Iterators.typed_subpart_iterator(msg, 'text', 'plain')
        lines = []
        subparts = 0
        for subpart in it:
            subparts += 1
            lines.append(subpart.get_payload())
        eq(subparts, 1)
        eq(EMPTYSTRING.join(lines), """\

Hi,

Do you like this message?

-Me
""")



class TestParsers(unittest.TestCase):
    def test_header_parser(self):
        eq = self.assertEqual
        # Parse only the headers of a complex multipart MIME document
        p = HeaderParser()
        fp = openfile('msg_02.txt')
        msg = p.parse(fp)
        eq(msg['from'], 'ppp-request@zzz.org')
        eq(msg['to'], 'ppp@zzz.org')
        eq(msg.get_type(), 'multipart/mixed')
        eq(msg.is_multipart(), 0)
        self.failUnless(isinstance(msg.get_payload(), StringType))

    def test_whitespace_continuaton(self):
        eq = self.assertEqual
        # This message contains a line after the Subject: header that has only
        # whitespace, but it is not empty!
        msg = email.message_from_string("""\
From: aperson@dom.ain
To: bperson@dom.ain
Subject: the next line has a space on it
\x20
Date: Mon, 8 Apr 2002 15:09:19 -0400
Message-ID: spam

Here's the message body
""")
        eq(msg['subject'], 'the next line has a space on it\n ')
        eq(msg['message-id'], 'spam')
        eq(msg.get_payload(), "Here's the message body\n")

    def test_crlf_separation(self):
        eq = self.assertEqual
        fp = openfile('msg_26.txt')
        p = Parser()
        msg = p.parse(fp)
        eq(len(msg.get_payload()), 2)
        part1 = msg.get_payload(0)
        eq(part1.get_type(), 'text/plain')
        eq(part1.get_payload(), 'Simple email with attachment.\r\n\r\n')
        part2 = msg.get_payload(1)
        eq(part2.get_type(), 'application/riscos')

##    def test_multipart_digest_with_extra_mime_headers(self):
##        eq = self.assertEqual
##        fp = openfile('msg_28.txt')
##        p = Parser()
##        msg = p.parse(fp)
##        self.failUnless(msg.is_multipart())
##        eq(len(msg.get_payload()), 2)
##        part1 = msg.get_payload(0)
##        eq(part1.get_type(), 'text/plain')
##        eq(part1.get_payload(), 'message 1')
##        part2 = msg.get_payload(1)
##        eq(part2.get_type(), 'text/plain')
##        eq(part2.get_payload(), 'message 2')



class TestBase64(unittest.TestCase):
    def test_len(self):
        eq = self.assertEqual
        eq(base64MIME.base64_len('hello'),
           len(base64MIME.encode('hello', eol='')))
        for size in range(15):
            if   size == 0 : bsize = 0
            elif size <= 3 : bsize = 4
            elif size <= 6 : bsize = 8
            elif size <= 9 : bsize = 12
            elif size <= 12: bsize = 16
            else           : bsize = 20
            eq(base64MIME.base64_len('x'*size), bsize)

    def test_decode(self):
        eq = self.assertEqual
        eq(base64MIME.decode(''), '')
        eq(base64MIME.decode('aGVsbG8='), 'hello')
        eq(base64MIME.decode('aGVsbG8=', 'X'), 'hello')
        eq(base64MIME.decode('aGVsbG8NCndvcmxk\n', 'X'), 'helloXworld')

    def test_encode(self):
        eq = self.assertEqual
        eq(base64MIME.encode(''), '')
        eq(base64MIME.encode('hello'), 'aGVsbG8=\n')
        # Test the binary flag
        eq(base64MIME.encode('hello\n'), 'aGVsbG8K\n')
        eq(base64MIME.encode('hello\n', 0), 'aGVsbG8NCg==\n')
        # Test the maxlinelen arg
        eq(base64MIME.encode('xxxx ' * 20, maxlinelen=40), """\
eHh4eCB4eHh4IHh4eHggeHh4eCB4eHh4IHh4eHgg
eHh4eCB4eHh4IHh4eHggeHh4eCB4eHh4IHh4eHgg
eHh4eCB4eHh4IHh4eHggeHh4eCB4eHh4IHh4eHgg
eHh4eCB4eHh4IA==
""")
        # Test the eol argument
        eq(base64MIME.encode('xxxx ' * 20, maxlinelen=40, eol='\r\n'), """\
eHh4eCB4eHh4IHh4eHggeHh4eCB4eHh4IHh4eHgg\r
eHh4eCB4eHh4IHh4eHggeHh4eCB4eHh4IHh4eHgg\r
eHh4eCB4eHh4IHh4eHggeHh4eCB4eHh4IHh4eHgg\r
eHh4eCB4eHh4IA==\r
""")

    def test_header_encode(self):
        eq = self.assertEqual
        he = base64MIME.header_encode
        eq(he('hello'), '=?iso-8859-1?b?aGVsbG8=?=')
        eq(he('hello\nworld'), '=?iso-8859-1?b?aGVsbG8NCndvcmxk?=')
        # Test the charset option
        eq(he('hello', charset='iso-8859-2'), '=?iso-8859-2?b?aGVsbG8=?=')
        # Test the keep_eols flag
        eq(he('hello\nworld', keep_eols=1),
           '=?iso-8859-1?b?aGVsbG8Kd29ybGQ=?=')
        # Test the maxlinelen argument
        eq(he('xxxx ' * 20, maxlinelen=40), """\
=?iso-8859-1?b?eHh4eCB4eHh4IHh4eHggeHg=?=
 =?iso-8859-1?b?eHggeHh4eCB4eHh4IHh4eHg=?=
 =?iso-8859-1?b?IHh4eHggeHh4eCB4eHh4IHg=?=
 =?iso-8859-1?b?eHh4IHh4eHggeHh4eCB4eHg=?=
 =?iso-8859-1?b?eCB4eHh4IHh4eHggeHh4eCA=?=
 =?iso-8859-1?b?eHh4eCB4eHh4IHh4eHgg?=""")
        # Test the eol argument
        eq(he('xxxx ' * 20, maxlinelen=40, eol='\r\n'), """\
=?iso-8859-1?b?eHh4eCB4eHh4IHh4eHggeHg=?=\r
 =?iso-8859-1?b?eHggeHh4eCB4eHh4IHh4eHg=?=\r
 =?iso-8859-1?b?IHh4eHggeHh4eCB4eHh4IHg=?=\r
 =?iso-8859-1?b?eHh4IHh4eHggeHh4eCB4eHg=?=\r
 =?iso-8859-1?b?eCB4eHh4IHh4eHggeHh4eCA=?=\r
 =?iso-8859-1?b?eHh4eCB4eHh4IHh4eHgg?=""")



class TestQuopri(unittest.TestCase):
    def setUp(self):
        self.hlit = [chr(x) for x in range(ord('a'), ord('z')+1)] + \
                    [chr(x) for x in range(ord('A'), ord('Z')+1)] + \
                    [chr(x) for x in range(ord('0'), ord('9')+1)] + \
                    ['!', '*', '+', '-', '/', ' ']
        self.hnon = [chr(x) for x in range(256) if chr(x) not in self.hlit]
        assert len(self.hlit) + len(self.hnon) == 256
        self.blit = [chr(x) for x in range(ord(' '), ord('~')+1)] + ['\t']
        self.blit.remove('=')
        self.bnon = [chr(x) for x in range(256) if chr(x) not in self.blit]
        assert len(self.blit) + len(self.bnon) == 256

    def test_header_quopri_check(self):
        for c in self.hlit:
            self.failIf(quopriMIME.header_quopri_check(c))
        for c in self.hnon:
            self.failUnless(quopriMIME.header_quopri_check(c))

    def test_body_quopri_check(self):
        for c in self.blit:
            self.failIf(quopriMIME.body_quopri_check(c))
        for c in self.bnon:
            self.failUnless(quopriMIME.body_quopri_check(c))

    def test_header_quopri_len(self):
        eq = self.assertEqual
        hql = quopriMIME.header_quopri_len
        enc = quopriMIME.header_encode
        for s in ('hello', 'h@e@l@l@o@'):
            # Empty charset and no line-endings.  7 == RFC chrome
            eq(hql(s), len(enc(s, charset='', eol=''))-7)
        for c in self.hlit:
            eq(hql(c), 1)
        for c in self.hnon:
            eq(hql(c), 3)

    def test_body_quopri_len(self):
        eq = self.assertEqual
        bql = quopriMIME.body_quopri_len
        for c in self.blit:
            eq(bql(c), 1)
        for c in self.bnon:
            eq(bql(c), 3)

    def test_quote_unquote_idempotent(self):
        for x in range(256):
            c = chr(x)
            self.assertEqual(quopriMIME.unquote(quopriMIME.quote(c)), c)

    def test_header_encode(self):
        eq = self.assertEqual
        he = quopriMIME.header_encode
        eq(he('hello'), '=?iso-8859-1?q?hello?=')
        eq(he('hello\nworld'), '=?iso-8859-1?q?hello=0D=0Aworld?=')
        # Test the charset option
        eq(he('hello', charset='iso-8859-2'), '=?iso-8859-2?q?hello?=')
        # Test the keep_eols flag
        eq(he('hello\nworld', keep_eols=1), '=?iso-8859-1?q?hello=0Aworld?=')
        # Test a non-ASCII character
        eq(he('hello\xc7there'), '=?iso-8859-1?q?hello=C7there?=')
        # Test the maxlinelen argument
        eq(he('xxxx ' * 20, maxlinelen=40), """\
=?iso-8859-1?q?xxxx_xxxx_xxxx_xxxx_xx?=
 =?iso-8859-1?q?xx_xxxx_xxxx_xxxx_xxxx?=
 =?iso-8859-1?q?_xxxx_xxxx_xxxx_xxxx_x?=
 =?iso-8859-1?q?xxx_xxxx_xxxx_xxxx_xxx?=
 =?iso-8859-1?q?x_xxxx_xxxx_?=""")
        # Test the eol argument
        eq(he('xxxx ' * 20, maxlinelen=40, eol='\r\n'), """\
=?iso-8859-1?q?xxxx_xxxx_xxxx_xxxx_xx?=\r
 =?iso-8859-1?q?xx_xxxx_xxxx_xxxx_xxxx?=\r
 =?iso-8859-1?q?_xxxx_xxxx_xxxx_xxxx_x?=\r
 =?iso-8859-1?q?xxx_xxxx_xxxx_xxxx_xxx?=\r
 =?iso-8859-1?q?x_xxxx_xxxx_?=""")

    def test_decode(self):
        eq = self.assertEqual
        eq(quopriMIME.decode(''), '')
        eq(quopriMIME.decode('hello'), 'hello')
        eq(quopriMIME.decode('hello', 'X'), 'hello')
        eq(quopriMIME.decode('hello\nworld', 'X'), 'helloXworld')

    def test_encode(self):
        eq = self.assertEqual
        eq(quopriMIME.encode(''), '')
        eq(quopriMIME.encode('hello'), 'hello')
        # Test the binary flag
        eq(quopriMIME.encode('hello\r\nworld'), 'hello\nworld')
        eq(quopriMIME.encode('hello\r\nworld', 0), 'hello\nworld')
        # Test the maxlinelen arg
        eq(quopriMIME.encode('xxxx ' * 20, maxlinelen=40), """\
xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx=
 xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxx=
x xxxx xxxx xxxx xxxx=20""")
        # Test the eol argument
        eq(quopriMIME.encode('xxxx ' * 20, maxlinelen=40, eol='\r\n'), """\
xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx=\r
 xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxx=\r
x xxxx xxxx xxxx xxxx=20""")
        eq(quopriMIME.encode("""\
one line

two line"""), """\
one line

two line""")



# Test the Charset class
class TestCharset(unittest.TestCase):
    def test_idempotent(self):
        eq = self.assertEqual
        # Make sure us-ascii = no Unicode conversion
        c = Charset('us-ascii')
        s = 'Hello World!'
        sp = c.to_splittable(s)
        eq(s, c.from_splittable(sp))
        # test 8-bit idempotency with us-ascii
        s = '\xa4\xa2\xa4\xa4\xa4\xa6\xa4\xa8\xa4\xaa'
        sp = c.to_splittable(s)
        eq(s, c.from_splittable(sp))



# Test multilingual MIME headers.
class TestHeader(TestEmailBase):
    def test_simple(self):
        eq = self.ndiffAssertEqual
        h = Header('Hello World!')
        eq(h.encode(), 'Hello World!')
        h.append(' Goodbye World!')
        eq(h.encode(), 'Hello World! Goodbye World!')

    def test_simple_surprise(self):
        eq = self.ndiffAssertEqual
        h = Header('Hello World!')
        eq(h.encode(), 'Hello World!')
        h.append('Goodbye World!')
        eq(h.encode(), 'Hello World!Goodbye World!')

    def test_header_needs_no_decoding(self):
        h = 'no decoding needed'
        self.assertEqual(decode_header(h), [(h, None)])

    def test_long(self):
        h = Header("I am the very model of a modern Major-General; I've information vegetable, animal, and mineral; I know the kings of England, and I quote the fights historical from Marathon to Waterloo, in order categorical; I'm very well acquainted, too, with matters mathematical; I understand equations, both the simple and quadratical; about binomial theorem I'm teeming with a lot o' news, with many cheerful facts about the square of the hypotenuse.",
                   maxlinelen=76)
        for l in h.encode().split('\n '):
            self.failUnless(len(l) <= 76)

    def test_multilingual(self):
        eq = self.assertEqual
        g = Charset("iso-8859-1")
        cz = Charset("iso-8859-2")
        utf8 = Charset("utf-8")
        g_head = "Die Mieter treten hier ein werden mit einem Foerderband komfortabel den Korridor entlang, an s\xfcdl\xfcndischen Wandgem\xe4lden vorbei, gegen die rotierenden Klingen bef\xf6rdert. "
        cz_head = "Finan\xe8ni metropole se hroutily pod tlakem jejich d\xf9vtipu.. "
        utf8_head = u"\u6b63\u78ba\u306b\u8a00\u3046\u3068\u7ffb\u8a33\u306f\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002\u4e00\u90e8\u306f\u30c9\u30a4\u30c4\u8a9e\u3067\u3059\u304c\u3001\u3042\u3068\u306f\u3067\u305f\u3089\u3081\u3067\u3059\u3002\u5b9f\u969b\u306b\u306f\u300cWenn ist das Nunstuck git und Slotermeyer? Ja! Beiherhund das Oder die Flipperwaldt gersput.\u300d\u3068\u8a00\u3063\u3066\u3044\u307e\u3059\u3002".encode("utf-8")
        h = Header(g_head, g)
        h.append(cz_head, cz)
        h.append(utf8_head, utf8)
        enc = h.encode()
        eq(enc, """=?iso-8859-1?q?Die_Mieter_treten_hier_ein_werden_mit_eine?=
 =?iso-8859-1?q?m_Foerderband_komfortabel_den_Korridor_ent?=
 =?iso-8859-1?q?lang=2C_an_s=FCdl=FCndischen_Wandgem=E4lden_vorbei?=
 =?iso-8859-1?q?=2C_gegen_die_rotierenden_Klingen_bef=F6rdert=2E_?=
 =?iso-8859-2?q?Finan=E8ni_metropole_se_hroutil?=
 =?iso-8859-2?q?y_pod_tlakem_jejich_d=F9vtipu=2E=2E_?=
 =?utf-8?b?5q2j56K644Gr6KiA44GG44Go57+76Kiz44Gv?=
 =?utf-8?b?44GV44KM44Gm44GE44G+44Gb44KT44CC5LiA?=
 =?utf-8?b?6YOo44Gv44OJ44Kk44OE6Kqe44Gn44GZ44GM?=
 =?utf-8?b?44CB44GC44Go44Gv44Gn44Gf44KJ44KB44Gn?=
 =?utf-8?b?44GZ44CC5a6f6Zqb44Gr44Gv44CMV2VubiBpc3QgZGE=?=
 =?utf-8?b?cyBOdW5zdHVjayBnaXQgdW5k?=
 =?utf-8?b?IFNsb3Rlcm1leWVyPyBKYSEgQmVpaGVyaHVuZCBkYXMgT2Rl?=
 =?utf-8?b?ciBkaWUgRmxpcHBlcndhbGR0?=
 =?utf-8?b?IGdlcnNwdXQu44CN44Go6KiA44Gj44Gm44GE44G+44GZ44CC?=""")
        eq(decode_header(enc),
           [(g_head, "iso-8859-1"), (cz_head, "iso-8859-2"),
            (utf8_head, "utf-8")])
        # Test for conversion to unicode.  BAW: Python 2.1 doesn't support the
        # __unicode__() protocol, so do things this way for compatibility.
        ustr = h.__unicode__()
        # For Python 2.2 and beyond
        #ustr = unicode(h)
        eq(ustr.encode('utf-8'),
           'Die Mieter treten hier ein werden mit einem Foerderband '
           'komfortabel den Korridor entlang, an s\xc3\xbcdl\xc3\xbcndischen '
           'Wandgem\xc3\xa4lden vorbei, gegen die rotierenden Klingen '
           'bef\xc3\xb6rdert. Finan\xc4\x8dni metropole se hroutily pod '
           'tlakem jejich d\xc5\xafvtipu.. \xe6\xad\xa3\xe7\xa2\xba\xe3\x81'
           '\xab\xe8\xa8\x80\xe3\x81\x86\xe3\x81\xa8\xe7\xbf\xbb\xe8\xa8\xb3'
           '\xe3\x81\xaf\xe3\x81\x95\xe3\x82\x8c\xe3\x81\xa6\xe3\x81\x84\xe3'
           '\x81\xbe\xe3\x81\x9b\xe3\x82\x93\xe3\x80\x82\xe4\xb8\x80\xe9\x83'
           '\xa8\xe3\x81\xaf\xe3\x83\x89\xe3\x82\xa4\xe3\x83\x84\xe8\xaa\x9e'
           '\xe3\x81\xa7\xe3\x81\x99\xe3\x81\x8c\xe3\x80\x81\xe3\x81\x82\xe3'
           '\x81\xa8\xe3\x81\xaf\xe3\x81\xa7\xe3\x81\x9f\xe3\x82\x89\xe3\x82'
           '\x81\xe3\x81\xa7\xe3\x81\x99\xe3\x80\x82\xe5\xae\x9f\xe9\x9a\x9b'
           '\xe3\x81\xab\xe3\x81\xaf\xe3\x80\x8cWenn ist das Nunstuck git '
           'und Slotermeyer? Ja! Beiherhund das Oder die Flipperwaldt '
           'gersput.\xe3\x80\x8d\xe3\x81\xa8\xe8\xa8\x80\xe3\x81\xa3\xe3\x81'
           '\xa6\xe3\x81\x84\xe3\x81\xbe\xe3\x81\x99\xe3\x80\x82')

    def test_explicit_maxlinelen(self):
        eq = self.ndiffAssertEqual
        hstr = 'A very long line that must get split to something other than at the 76th character boundary to test the non-default behavior'
        h = Header(hstr)
        eq(h.encode(), '''\
A very long line that must get split to something other than at the 76th
 character boundary to test the non-default behavior''')
        h = Header(hstr, header_name='Subject')
        eq(h.encode(), '''\
A very long line that must get split to something other than at the
 76th character boundary to test the non-default behavior''')
        h = Header(hstr, maxlinelen=1024, header_name='Subject')
        eq(h.encode(), hstr)



def _testclasses():
    mod = sys.modules[__name__]
    return [getattr(mod, name) for name in dir(mod) if name.startswith('Test')]


def suite():
    suite = unittest.TestSuite()
    for testclass in _testclasses():
        suite.addTest(unittest.makeSuite(testclass))
    return suite


def test_main():
    for testclass in _testclasses():
        test_support.run_unittest(testclass)



if __name__ == '__main__':
    unittest.main(defaultTest='suite')