test_archivemail

#! /usr/bin/env python
############################################################################
# Copyright (C) 2002  Paul Rodger <paul@paulrodger.com>
#           (C) 2006-2011  Nikolaus Schulz <microschulz@web.de>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
############################################################################
"""
Unit-test archivemail using 'PyUnit'.

TODO: add tests for:
    * dotlock locks already existing
    * archiving MH-format mailboxes
    * a 3rd party process changing the mbox file being read

"""

import sys

def check_python_version(): 
    """Abort if we are running on python < v2.3"""
    too_old_error = "This test script requires python version 2.3 or later. " + \
      "Your version of python is:\n%s" % sys.version
    try: 
        version = sys.version_info  # we might not even have this function! :)
        if (version[0] < 2) or (version[0] == 2 and version[1] < 3):
            print too_old_error
            sys.exit(1)
    except AttributeError:
        print too_old_error
        sys.exit(1)

# define & run this early because 'unittest' requires Python >= 2.1
check_python_version()  

import copy
import fcntl
import filecmp
import os
import re
import shutil
import stat
import tempfile
import time
import unittest
import gzip
import cStringIO
import rfc822
import mailbox

from types import ModuleType
archivemail = ModuleType("archivemail")
try:
    module_fp = open("archivemail", "r")
except IOError:
    print "The archivemail script should be in the current directory in order"
    print "to be imported and tested. Sorry."
    sys.exit(1)
exec module_fp in archivemail.__dict__

# We want to iterate over messages in a compressed archive mbox and verify
# them.  This involves seeking in the mbox.  The gzip.Gzipfile.seek() in
# Python 2.5 doesn't understand whence; this is Python bug #1355023, triggered
# by mailbox._PartialFile.seek().  The bug is still pending as of Python
# 2.5.2.  To work around it, we subclass gzip.GzipFile.
#
# It should be noted that seeking backwards in a GzipFile is emulated by
# re-reading the entire file from the beginning, which is extremely
# inefficient and won't work with large files; but our test archives are all
# small, so it's okay.

class FixedGzipFile(gzip.GzipFile):
    """GzipFile with seek method accepting whence parameter."""
    def seek(self, offset, whence=0):
        try:
            # Try calling gzip.GzipFile.seek with the whence parameter.
            # For Python >= 2.7, it returns the new offset; pass that on.
            return gzip.GzipFile.seek(self, offset, whence)
        except TypeError:
            if whence:
                if whence == 1:
                    offset = self.offset + offset
                else:
                    raise ValueError('Seek from end not supported')
            return gzip.GzipFile.seek(self, offset)

# precision of os.utime() when restoring mbox timestamps
utimes_precision = 5

class MessageIdFactory:
    """Factory to create `uniqe' message-ids."""
    def __init__(self):
        self.seq = 0
    def __call__(self):
        self.seq += 1
        return "<archivemail%d@localhost>" % self.seq

make_msgid = MessageIdFactory()

class IndexedMailboxDir:
    """An indexed mailbox directory, providing random message access by
    message-id. Intended as a base class for a maildir and an mh subclass."""

    def __init__(self, mdir_name):
        assert tempfile.tempdir
        self.root = tempfile.mkdtemp(prefix=mdir_name)
        self.msg_id_dict = {}
        self.deliveries = 0

    def _add_to_index(self, msg_text, fpath):
        """Add the given message to the index, for later random access."""
        # Extract the message-id as index key
        msg_id = None
        fp = cStringIO.StringIO(msg_text)
        while True:
            line = fp.readline()
            # line empty means we didn't find a message-id
            assert line
            if line.lower().startswith("message-id:"):
                msg_id = line.split(":", 1)[-1].strip()
                assert msg_id
                break
        assert not self.msg_id_dict.has_key(msg_id)
        self.msg_id_dict[msg_id] = fpath

    def get_all_filenames(self):
        """Return all relative pathnames of files in this mailbox."""
        return self.msg_id_dict.values()

class SimpleMaildir(IndexedMailboxDir):
    """Primitive Maildir class, just good enough for generating short-lived
    test maildirs."""

    def __init__(self, mdir_name='maildir'):
        IndexedMailboxDir.__init__(self, mdir_name)
        for d in "cur", "tmp", "new":
            os.mkdir(os.path.join(self.root, d))

    def write(self, msg_str, new=True, flags=[]):
        """Store a message with the given flags."""
        assert not (new and flags)
        if new:
            subdir = "new"
        else:
            subdir = "cur"
        fname = self._mkname(new, flags)
        relpath = os.path.join(subdir, fname)
        path = os.path.join(self.root, relpath)
        assert not os.path.exists(path)
        f = open(path, "w")
        f.write(msg_str)
        f.close()
        self._add_to_index(msg_str, relpath)

    def _mkname(self, new, flags):
        """Generate a unique filename for a new message."""
        validflags = 'DFPRST'
        for f in flags:
            assert f in validflags
        # This 'unique' name should be good enough, since nobody else
        # will ever write messages to this maildir folder.
        uniq = str(self.deliveries)
        self.deliveries += 1
        if new:
            return uniq
        if not flags:
            return uniq + ':2,'
        finfo = "".join(sorted(flags))
        return uniq + ':2,' + finfo

    def get_message_and_mbox_status(self, msgid):
        """For the Message-Id msgid, return the matching message in text
        format and its status, expressed as a set of mbox flags."""
        fpath = self.msg_id_dict[msgid] # Barfs if not found
        mdir_flags = fpath.rsplit('2,', 1)[-1]
        flagmap = {
                'F': 'F',
                'R': 'A',
                'S': 'R'
        }
        mbox_flags = set([flagmap[x] for x in mdir_flags])
        if fpath.startswith("cur/"):
            mbox_flags.add('O')
        fp = open(os.path.join(self.root, fpath), "r")
        msg = fp.read()
        fp.close()
        return msg, mbox_flags


class TestCaseInTempdir(unittest.TestCase):
    """Base class for testcases that need to create temporary files. 
    All testcases that create temporary files should be derived from this
    class, not directly from unittest.TestCase.
    TestCaseInTempdir provides these methods:
    
    setUp()     Creates a safe temporary directory and sets tempfile.tempdir.
                
    tearDown()  Recursively removes the temporary directory and unsets
                tempfile.tempdir.

    Overriding methods should call the ones above."""
    temproot = None

    def setUp(self):
        if not self.temproot:
            assert not tempfile.tempdir
            self.temproot = tempfile.tempdir = \
                tempfile.mkdtemp(prefix="test-archivemail")
     
    def tearDown(self):
        assert tempfile.tempdir == self.temproot
        if self.temproot:
            shutil.rmtree(self.temproot)
            tempfile.tempdir = self.temproot = None


############ Mbox Class testing ##############

class TestMboxDotlock(TestCaseInTempdir):
    def setUp(self):
        super(TestMboxDotlock, self).setUp()
        self.mbox_name = make_mbox()
        self.mbox_mode = os.stat(self.mbox_name)[stat.ST_MODE]
        self.mbox = archivemail.Mbox(self.mbox_name)

    def testDotlock(self):
        """dotlock_lock/unlock should create/delete a lockfile"""
        lock = self.mbox_name + ".lock"
        self.mbox._dotlock_lock()
        assert os.path.isfile(lock)
        self.mbox._dotlock_unlock()
        assert not os.path.isfile(lock)

    def testDotlockingSucceedsUponEACCES(self):
        """A dotlock should silently be omitted upon EACCES."""
        archivemail.options.quiet = True
        mbox_dir = os.path.dirname(self.mbox_name)
        os.chmod(mbox_dir, 0500)
        try:
            self.mbox._dotlock_lock()
            self.mbox._dotlock_unlock()
        finally:
            os.chmod(mbox_dir, 0700)
            archivemail.options.quiet = False

class TestMboxPosixLock(TestCaseInTempdir):
    def setUp(self):
        super(TestMboxPosixLock, self).setUp()
        self.mbox_name = make_mbox()
        self.mbox = archivemail.Mbox(self.mbox_name)

    def testPosixLock(self):
        """posix_lock/unlock should create/delete an advisory lock"""
        
        # The following code snippet heavily lends from the Python 2.5 mailbox
        # unittest.
        # BEGIN robbery:

        # Fork off a subprocess that will lock the file for 2 seconds,
        # unlock it, and then exit.
        pid = os.fork()
        if pid == 0:
            # In the child, lock the mailbox.
            self.mbox._posix_lock()
            time.sleep(2)
            self.mbox._posix_unlock()
            os._exit(0)

        # In the parent, sleep a bit to give the child time to acquire
        # the lock.
        time.sleep(0.5)
        # The parent's file self.mbox.mbox_file shares fcntl locks with the
        # duplicated FD in the child; reopen it so we get a different file
        # table entry.
        file = open(self.mbox_name, "r+")
        lock_nb = fcntl.LOCK_EX | fcntl.LOCK_NB
        fd = file.fileno()
        try:
            self.assertRaises(IOError, fcntl.lockf, fd, lock_nb)

        finally:
            # Wait for child to exit.  Locking should now succeed.
            exited_pid, status = os.waitpid(pid, 0)

        fcntl.lockf(fd, lock_nb)
        fcntl.lockf(fd, fcntl.LOCK_UN)
        # END robbery


class TestMboxNext(TestCaseInTempdir):
    def setUp(self):
        super(TestMboxNext, self).setUp()
        self.not_empty_name = make_mbox(messages=18)
        self.empty_name = make_mbox(messages=0)

    def testNextEmpty(self):
        """mbox.next() should return None on an empty mailbox"""
        mbox = archivemail.Mbox(self.empty_name)
        msg = mbox.next()
        self.assertEqual(msg, None)

    def testNextNotEmpty(self):
        """mbox.next() should a message on a populated mailbox"""
        mbox = archivemail.Mbox(self.not_empty_name)
        for count in range(18):
            msg = mbox.next()
            assert msg
        msg = mbox.next()
        self.assertEqual(msg, None)


############ TempMbox Class testing ##############

class TestTempMboxWrite(TestCaseInTempdir):
    def setUp(self):
        super(TestTempMboxWrite, self).setUp()

    def testWrite(self):
        """mbox.write() should append messages to a mbox mailbox"""
        read_file = make_mbox(messages=3)
        mbox_read = archivemail.Mbox(read_file)
        mbox_write = archivemail.TempMbox()
        write_file = mbox_write.mbox_file_name
        for count in range(3):
            msg = mbox_read.next()
            mbox_write.write(msg)
        mbox_read.close()
        mbox_write.close()
        assert filecmp.cmp(read_file, write_file, shallow=0)

    def testWriteNone(self):
        """calling mbox.write() with no message should raise AssertionError"""
        write = archivemail.TempMbox()
        self.assertRaises(AssertionError, write.write, None)

class TestTempMboxRemove(TestCaseInTempdir):
    def setUp(self):
        super(TestTempMboxRemove, self).setUp()
        self.mbox = archivemail.TempMbox()
        self.mbox_name = self.mbox.mbox_file_name

    def testMboxRemove(self):
        """remove() should delete a mbox mailbox"""
        assert os.path.exists(self.mbox_name)
        self.mbox.remove()
        assert not os.path.exists(self.mbox_name)



########## options class testing #################

class TestOptionDefaults(unittest.TestCase):
    def testVerbose(self):
        """verbose should be off by default"""
        self.assertEqual(archivemail.options.verbose, False)

    def testDaysOldMax(self):
        """default archival time should be 180 days"""
        self.assertEqual(archivemail.options.days_old_max, 180)

    def testQuiet(self):
        """quiet should be off by default"""
        self.assertEqual(archivemail.options.quiet, False)

    def testDeleteOldMail(self):
        """we should not delete old mail by default"""
        self.assertEqual(archivemail.options.delete_old_mail, False)

    def testNoCompress(self):
        """no-compression should be off by default"""
        self.assertEqual(archivemail.options.no_compress, False)

    def testIncludeFlagged(self):
        """we should not archive flagged messages by default"""
        self.assertEqual(archivemail.options.include_flagged, False)

    def testPreserveUnread(self):
        """we should not preserve unread messages by default"""
        self.assertEqual(archivemail.options.preserve_unread, False)

class TestOptionParser(unittest.TestCase):
    def setUp(self):
        self.oldopts = copy.copy(archivemail.options)

    def testOptionDate(self):
        """--date and -D options are parsed correctly"""
        date_formats = (
            "%Y-%m-%d",  # ISO format
            "%d %b %Y" , # Internet format
            "%d %B %Y" , # Internet format with full month names
        )
        date = time.strptime("2000-07-29", "%Y-%m-%d")
        unixdate = time.mktime(date)
        for df in date_formats:
            d = time.strftime(df, date)
            for opt in '-D', '--date=':
                archivemail.options.date_old_max = None
                archivemail.options.parse_args([opt+d], "")
                self.assertEqual(unixdate, archivemail.options.date_old_max)

    def testOptionPreserveUnread(self):
        """--preserve-unread option is parsed correctly"""
        archivemail.options.parse_args(["--preserve-unread"], "")
        assert archivemail.options.preserve_unread
        archivemail.options.preserve_unread = False
        archivemail.options.parse_args(["-u"], "")
        assert archivemail.options.preserve_unread

    def testOptionSuffix(self):
        """--suffix and -s options are parsed correctly"""
        for suffix in ("_static_", "_%B_%Y", "-%Y-%m-%d"):
            archivemail.options.parse_args(["--suffix="+suffix], "")
            self.assertEqual(archivemail.options.archive_suffix, suffix)
            archivemail.options.archive_suffix = None
            archivemail.options.parse_args(["-s", suffix], "")
            self.assertEqual(archivemail.options.archive_suffix, suffix)

    def testOptionPrefix(self):
        """--prefix and -p options are parsed correctly"""
        for prefix in ("_static_", "_%B_%Y", "-%Y-%m-%d"):
            archivemail.options.parse_args(["--prefix="+prefix], "")
            self.assertEqual(archivemail.options.archive_prefix, prefix)
            archivemail.options.archive_prefix = None
            archivemail.options.parse_args(["-p", prefix], "")
            self.assertEqual(archivemail.options.archive_prefix, prefix)

    def testOptionArchivename(self):
        """--archive-name and -a options are parsed correctly"""
        for name in ("custom", ".withdot", "custom_%Y", "%Y/joe"):
            archivemail.options.parse_args(["--archive-name="+name], "")
            self.assertEqual(archivemail.options.archive_name, name)
            archivemail.options.archive_name = None
            archivemail.options.parse_args(["-a", name], "")
            self.assertEqual(archivemail.options.archive_name, name)

    def testOptionDryrun(self):
        """--dry-run option is parsed correctly"""
        archivemail.options.parse_args(["--dry-run"], "")
        assert archivemail.options.dry_run
        archivemail.options.preserve_unread = False
        archivemail.options.parse_args(["-n"], "")
        assert archivemail.options.dry_run

    def testOptionDays(self):
        """--days and -d options are parsed correctly"""
        archivemail.options.parse_args(["--days=11"], "")
        self.assertEqual(archivemail.options.days_old_max, 11)
        archivemail.options.days_old_max = None
        archivemail.options.parse_args(["-d11"], "")
        self.assertEqual(archivemail.options.days_old_max, 11)

    def testOptionDelete(self):
        """--delete option is parsed correctly"""
        archivemail.options.parse_args(["--delete"], "")
        assert archivemail.options.delete_old_mail

    def testOptionCopy(self):
        """--copy option is parsed correctly"""
        archivemail.options.parse_args(["--copy"], "")
        assert archivemail.options.copy_old_mail

    def testOptionOutputdir(self):
        """--output-dir and -o options are parsed correctly"""
        for path in "/just/some/path", "relative/path":
            archivemail.options.parse_args(["--output-dir=%s" % path], "")
            self.assertEqual(archivemail.options.output_dir, path)
            archivemail.options.output_dir = None
            archivemail.options.parse_args(["-o%s" % path], "")
            self.assertEqual(archivemail.options.output_dir, path)

    def testOptionNocompress(self):
        """--no-compress option is parsed correctly"""
        archivemail.options.parse_args(["--no-compress"], "")
        assert archivemail.options.no_compress

    def testOptionSize(self):
        """--size and -S options are parsed correctly"""
        size = "666"
        archivemail.options.parse_args(["--size=%s" % size ], "")
        self.assertEqual(archivemail.options.min_size, int(size))
        archivemail.options.parse_args(["-S%s" % size ], "")
        self.assertEqual(archivemail.options.min_size, int(size))

    def tearDown(self):
        archivemail.options = self.oldopts

########## archivemail.is_older_than_days() unit testing #################

class TestIsTooOld(unittest.TestCase):
    def testVeryOld(self):
        """with max_days=360, should be true for these dates > 1 year"""
        for years in range(1, 10):
            time_msg = time.time() - (years * 365 * 24 * 60 * 60)
            assert archivemail.is_older_than_days(time_message=time_msg,
                max_days=360)

    def testOld(self):
        """with max_days=14, should be true for these dates > 14 days"""
        for days in range(14, 360):
            time_msg = time.time() - (days * 24 * 60 * 60)
            assert archivemail.is_older_than_days(time_message=time_msg,
                max_days=14)

    def testJustOld(self):
        """with max_days=1, should be true for these dates >= 1 day"""
        for minutes in range(0, 61):
            time_msg = time.time() - (25 * 60 * 60) + (minutes * 60)
            assert archivemail.is_older_than_days(time_message=time_msg,
                max_days=1)

    def testNotOld(self):
        """with max_days=9, should be false for these dates < 9 days"""
        for days in range(0, 9):
            time_msg = time.time() - (days * 24 * 60 * 60)
            assert not archivemail.is_older_than_days(time_message=time_msg,
                max_days=9)

    def testJustNotOld(self):
        """with max_days=1, should be false for these hours <= 1 day"""
        for minutes in range(0, 60):
            time_msg = time.time() - (23 * 60 * 60) - (minutes * 60)
            assert not archivemail.is_older_than_days(time_message=time_msg,
                max_days=1)

    def testFuture(self):
        """with max_days=1, should be false for times in the future"""
        for minutes in range(0, 60):
            time_msg = time.time() + (minutes * 60)
            assert not archivemail.is_older_than_days(time_message=time_msg,
                max_days=1)

########## archivemail.parse_imap_url() unit testing #################

class TestParseIMAPUrl(unittest.TestCase): 
    def setUp(self):
        archivemail.options.quiet = True
        archivemail.options.verbose = False
        archivemail.options.pwfile = None
        
    urls_withoutpass = [
            ('imap://user@example.org@imap.example.org/upperbox/lowerbox',
                ('user', None, 'example.org@imap.example.org', 143,
                'upperbox/lowerbox')), 
            ('imap://"user@example.org"@imap.example.org/upperbox/lowerbox',
                ('user@example.org', None, 'imap.example.org', 143,
                'upperbox/lowerbox')), 
            ('imap://user@example.org"@imap.example.org/upperbox/lowerbox',
                ('user', None, 'example.org"@imap.example.org', 143,
                'upperbox/lowerbox')), 
            ('imaps://"user@example.org@imap.example.org/upperbox/lowerbox',
                ('"user', None, 'example.org@imap.example.org', 993,
                'upperbox/lowerbox')), 
            ('imaps://"us\\"er@example.org"@imap.example.org/upperbox/lowerbox',
                ('us"er@example.org', None, 'imap.example.org', 993,
                'upperbox/lowerbox')), 
            ('imaps://user\\@example.org@imap.example.org/upperbox/lowerbox',
                ('user\\', None, 'example.org@imap.example.org', 993,
                'upperbox/lowerbox'))
    ]
    urls_withpass = [
            ('imap://user@example.org:passwd@imap.example.org/upperbox/lowerbox',
                ('user@example.org', 'passwd', 'imap.example.org', 143,
                'upperbox/lowerbox')), 
            ('imaps://"user@example.org:passwd@imap.example.org/upperbox/lowerbox',
                ('"user@example.org', "passwd", 'imap.example.org', 993,
                'upperbox/lowerbox')), 
            ('imaps://u\\ser\\@example.org:"p@sswd"@imap.example.org/upperbox/lowerbox', 
                ('u\\ser\\@example.org', 'p@sswd', 'imap.example.org', 993,
                'upperbox/lowerbox'))
    ]
    # These are invalid when the password's not stripped. 
    urls_onlywithpass = [
            ('imaps://"user@example.org":passwd@imap.example.org/upperbox/lowerbox',
                ('user@example.org', "passwd", 'imap.example.org',
                'upperbox/lowerbox'))
    ]
    def testUrlsWithoutPwfile(self):
        """Parse test urls with --pwfile option unset. This parses a password in
        the URL, if present."""
        archivemail.options.pwfile = None
        for mbstr in self.urls_withpass + self.urls_withoutpass:
            url = mbstr[0]
            result = archivemail.parse_imap_url(url)
            self.assertEqual(result, mbstr[1])

    def testUrlsWithPwfile(self):
        """Parse test urls with --pwfile set.  In this case the ':' character
        loses its meaning as a delimiter."""
        archivemail.options.pwfile = "whocares.txt"
        for mbstr in self.urls_onlywithpass: 
            url = mbstr[0]
            self.assertRaises(archivemail.UnexpectedError,
                    archivemail.parse_imap_url, url)

    def testUrlsDefaultPorts(self):
        """If an IMAP URL does not specify a server port, the standard ports
        are used."""
        archivemail.options.pwfile = "doesnotexist.txt"
        self.assertEqual(143, archivemail.parse_imap_url("imap://user@host/box")[3])
        self.assertEqual(993, archivemail.parse_imap_url("imaps://user@host/box")[3])

    def testUrlsWithPassAndPortnumber(self):
        """IMAP URLs with an embedded password and a server port number are
        correctly parsed."""
        self.assertEqual(1234, archivemail.parse_imap_url("imap://user:pass@host:1234/box")[3])
        self.assertEqual(1234, archivemail.parse_imap_url("imap://user:pass@host:1234/box")[3])

    def tearDown(self): 
        archivemail.options.quiet = False
        archivemail.options.verbose = False
        archivemail.options.pwfile = None

########## quoting and un-quoting of IMAP strings ##########

class TestIMAPQuoting(unittest.TestCase):
    stringlist = (
            ('{braces} and space', '"{braces} and space"'),
            ('\\backslash', '"\\\\backslash"'),
            ('with "quotes" inbetween', '"with \\"quotes\\" inbetween"'),
            ('ending with "quotes"', '"ending with \\"quotes\\""'),
            ('\\"backslash before quote', '"\\\\\\"backslash before quote"')
    )

    def testQuote(self):
        for unquoted, quoted in self.stringlist:
            self.assertEqual(archivemail.imap_quote(unquoted), quoted)

    def testUnquote(self):
        for unquoted, quoted in self.stringlist:
            self.assertEqual(unquoted, archivemail.imap_unquote(quoted))


########## Modified UTF-7 support functions ##########

class TestModUTF7(unittest.TestCase):
    goodpairs = (
            (u"A\N{NOT IDENTICAL TO}A.", "A&ImI-A."),
            (u"Hi Mom -\N{WHITE SMILING FACE}-!", "Hi Mom -&Jjo--!"),
            (u"~peter/mail/\u53f0\u5317/\u65e5\u672c\u8a9e",
                "~peter/mail/&U,BTFw-/&ZeVnLIqe-")
    )

    def testEncode(self):
        """Ensure that encoding text in modified UTF-7 works properly."""
        for text, code in self.goodpairs:
            self.assertEqual(archivemail.mod_utf7_encode(text), code)

    def testDecode(self):
        """Ensure that decoding modified UTF-7 to text works properly."""
        for text, code in self.goodpairs:
            self.assertEqual(archivemail.mod_utf7_decode(code), text)


########## acceptance testing ###########

class TestArchive(TestCaseInTempdir):
    """Base class defining helper functions for doing test archiving runs."""
    mbox = None         # mbox file that will be processed by archivemail
    good_archive = None # Uncompressed reference archive file to verify the
                        # archive after processing
    good_mbox = None    # Reference mbox file to verify the mbox after processing

    def verify(self):
        assert os.path.exists(self.mbox)
        if self.good_mbox is not None:
            assertEqualContent(self.mbox, self.good_mbox)
        else:
            self.assertEqual(os.path.getsize(self.mbox), 0)
        archive_name = self.mbox + "_archive"
        if not archivemail.options.no_compress:
            archive_name += ".gz"
            iszipped = True
        else:
            assert not os.path.exists(archive_name + ".gz")
            iszipped = False
        if self.good_archive is not None:
            assertEqualContent(archive_name, self.good_archive, iszipped)
        else:
            assert not os.path.exists(archive_name)

    def make_old_mbox(self, body=None, headers=None, messages=1, make_old_archive=False):
        """Prepare for a test run with an old mbox by making an old mbox,
        optionally an existing archive, and a reference archive to verify the
        archive after archivemail has run."""
        self.mbox = make_mbox(body, headers, 181*24, messages)
        archive_does_change = not (archivemail.options.dry_run or
                archivemail.options.delete_old_mail)
        mbox_does_not_change = archivemail.options.dry_run or \
                archivemail.options.copy_old_mail
        if make_old_archive:
            archive = archivemail.make_archive_name(self.mbox)
            self.good_archive = make_archive_and_plain_copy(archive)
            if archive_does_change:
                append_file(self.mbox, self.good_archive)
        elif archive_does_change:
            self.good_archive = tempfile.mkstemp()[1]
            shutil.copyfile(self.mbox, self.good_archive)
        if mbox_does_not_change:
            if archive_does_change and not make_old_archive:
                self.good_mbox = self.good_archive
            else:
                self.good_mbox = tempfile.mkstemp()[1]
                shutil.copyfile(self.mbox, self.good_mbox)

    def make_mixed_mbox(self, body=None, headers=None, messages=1, make_old_archive=False):
        """Prepare for a test run with a mixed mbox by making a mixed mbox,
        optionally an existing archive, a reference archive to verify the
        archive after archivemail has run, and likewise a reference mbox to
        verify the mbox."""
        self.make_old_mbox(body, headers, messages=messages, make_old_archive=make_old_archive)
        new_mbox_name = make_mbox(body, headers, 179*24, messages)
        append_file(new_mbox_name, self.mbox)
        if self.good_mbox is None:
            self.good_mbox = new_mbox_name
        else:
            if self.good_mbox == self.good_archive:
                self.good_mbox = tempfile.mkstemp()[1]
                shutil.copyfile(self.mbox, self.good_mbox)
            else:
                append_file(new_mbox_name, self.good_mbox)

    def make_new_mbox(self, body=None, headers=None, messages=1, make_old_archive=False):
        """Prepare for a test run with a new mbox by making a new mbox,
        optionally an exiting archive, and a reference mbox to verify the mbox
        after archivemail has run."""
        self.mbox = make_mbox(body, headers, 179*24, messages)
        self.good_mbox = tempfile.mkstemp()[1]
        shutil.copyfile(self.mbox, self.good_mbox)
        if make_old_archive:
            archive = archivemail.make_archive_name(self.mbox)
            self.good_archive = make_archive_and_plain_copy(archive)


class TestArchiveMbox(TestArchive):
    """archiving should work based on the date of messages given"""

    def setUp(self):
        self.oldopts = copy.copy(archivemail.options)
        archivemail.options.quiet = True
        super(TestArchiveMbox, self).setUp()
 
    def testOld(self):
        """archiving an old mailbox"""
        self.make_old_mbox(messages=3)
        archivemail.archive(self.mbox)
        self.verify()

    def testOldFromInBody(self):
        """archiving an old mailbox with 'From ' in the body"""
        body = """This is a message with ^From at the start of a line
From is on this line
This is after the ^From line"""
        self.make_old_mbox(messages=3, body=body)
        archivemail.archive(self.mbox)
        self.verify()

    def testDateSystem(self):
        """test that the --date option works as expected"""
        test_headers = (
            {
                'From_' : 'sender@dummy.domain Fri Jul 28 16:11:36 2030',
                'Date' : 'Fri, 28 Jul 2000 16:11:36 +1000',
            },
            {
                'From_' : 'sender@dummy.domain Fri Jul 28 16:11:36 2000',
                'Date' : None,
            },
            {
                'From_' : 'sender@dummy.domain Fri Jul 28 16:11:36 2030',
                'Date' : None,
                'Delivery-date' : 'Fri, 28 Jul 2000 16:11:36 +1000',
            },
            {
                'From_' : 'sender@dummy.domain Fri Jul 28 16:11:36 2030',
                'Date' : None,
                'Resent-Date' : 'Fri, 28 Jul 2000 16:11:36 +1000',
            },
        )
        for headers in test_headers:
            msg = make_message(default_headers=headers, wantobj=True)
            date = time.strptime("2000-07-29", "%Y-%m-%d")
            archivemail.options.date_old_max = time.mktime(date)
            assert archivemail.should_archive(msg)
            date = time.strptime("2000-07-27", "%Y-%m-%d")
            archivemail.options.date_old_max = time.mktime(date)
            assert not archivemail.should_archive(msg)

    def testMixed(self):
        """archiving a mixed mailbox"""
        self.make_mixed_mbox(messages=3)
        archivemail.archive(self.mbox)
        self.verify()

    def testNew(self):
        """archiving a new mailbox"""
        self.make_new_mbox(messages=3)
        archivemail.archive(self.mbox)
        self.verify()

    def testOldExisting(self):
        """archiving an old mailbox with an existing archive"""
        self.make_old_mbox(messages=3, make_old_archive=True)
        archivemail.archive(self.mbox)
        self.verify()

    def testOldWeirdHeaders(self):
        """archiving old mailboxes with weird headers"""
        weird_headers = (
            {   # we should archive because of the date on the 'From_' line
                'From_' : 'sender@dummy.domain Fri Jul 28 16:11:36 2000',
                'Date'  : 'Friskhdfkjkh, 28 Jul 2002 1line noise6:11:36 +1000',
            },
            {   # we should archive because of the date on the 'From_' line
                'From_' : 'sender@dummy.domain Fri Jul 28 16:11:36 2000',
                'Date'  : None,
            },
            {   # we should archive because of the date in 'Delivery-date'
                'From_' : 'sender@dummy.domain Fri Jul 28 16:11:36 2030',
                'Date'  : 'Frcorruptioni, 28 Jul 20line noise00 16:6 +1000',
                'Delivery-date' : 'Fri, 28 Jul 2000 16:11:36 +1000',
            },
            {   # we should archive because of the date in 'Delivery-date'
                'From_' : 'sender@dummy.domain Fri Jul 28 16:11:36 2030',
                'Date' : None,
                'Delivery-date' : 'Fri, 28 Jul 2000 16:11:36 +1000',
            },
            {   # we should archive because of the date in 'Resent-Date'
                'From_' : 'sender@dummy.domain Fri Jul 28 16:11:36 2030',
                'Date'  : 'Frcorruptioni, 28 Jul 20line noise00 16:6 +1000',
                'Resent-Date' : 'Fri, 28 Jul 2000 16:11:36 +1000',
            },
            {   # we should archive because of the date in 'Resent-Date'
                'From_' : 'sender@dummy.domain Fri Jul 28 16:11:36 2030',
                'Date' : None,
                'Resent-Date' : 'Fri, 28 Jul 2000 16:11:36 +1000',
            },
            {   # completely blank dates were crashing < version 0.4.7
                'From_' : 'sender@dummy.domain Fri Jul 28 16:11:36 2000',
                'Date'  : '',
            },
            {   # completely blank dates were crashing < version 0.4.7
                'From_' : 'sender@dummy.domain Fri Jul 28 16:11:36 2000',
                'Date'  : '',
                'Resent-Date'  : '',
            },
        )
        fd, self.mbox = tempfile.mkstemp()
        fp = os.fdopen(fd, "w")
        for headers in weird_headers:
            msg_text = make_message(default_headers=headers)
            fp.write(msg_text*2)
        fp.close()
        self.good_archive = tempfile.mkstemp()[1]
        shutil.copyfile(self.mbox, self.good_archive)
        archivemail.archive(self.mbox)
        self.verify()

    def tearDown(self):
        archivemail.options = self.oldopts
        super(TestArchiveMbox, self).tearDown()


class TestArchiveMboxTimestamp(TestCaseInTempdir):
    """original mbox timestamps should always be preserved"""
    def setUp(self):
        super(TestArchiveMboxTimestamp, self).setUp() 
        archivemail.options.quiet = True
        self.mbox_name = make_mbox(messages=3, hours_old=(24 * 180))
        self.mtime = os.path.getmtime(self.mbox_name) - 66
        self.atime = os.path.getatime(self.mbox_name) - 88
        os.utime(self.mbox_name, (self.atime, self.mtime))

    def testNew(self):
        """mbox timestamps should not change after no archival"""
        archivemail.options.days_old_max = 181
        archivemail.archive(self.mbox_name)
        self.verify()

    def testOld(self):
        """mbox timestamps should not change after archival"""
        archivemail.options.days_old_max = 179
        archivemail.archive(self.mbox_name)
        self.verify()

    def verify(self):
        assert os.path.exists(self.mbox_name)
        new_atime = os.path.getatime(self.mbox_name)
        new_mtime = os.path.getmtime(self.mbox_name)
        self.assertAlmostEqual(self.mtime, new_mtime, utimes_precision)
        self.assertAlmostEqual(self.atime, new_atime, utimes_precision)

    def tearDown(self):
        archivemail.options.quiet = False
        archivemail.options.days_old_max = 180
        os.remove(self.mbox_name)
        super(TestArchiveMboxTimestamp, self).tearDown()


class TestArchiveMboxAll(unittest.TestCase):
    def setUp(self):
        archivemail.options.quiet = True
        archivemail.options.archive_all = True

    def testNew(self):
        """new messages should be archived with --all"""
        self.msg = make_message(hours_old=24*179, wantobj=True)
        assert archivemail.should_archive(self.msg)

    def testOld(self):
        """old messages should be archived with --all"""
        self.msg = make_message(hours_old=24*181, wantobj=True)
        assert archivemail.should_archive(self.msg)

    def tearDown(self):
        archivemail.options.quiet = False
        archivemail.options.archive_all = False

class TestArchiveMboxPreserveUnread(unittest.TestCase):
    """make sure the 'preserve_unread' option works"""
    def setUp(self):
        archivemail.options.quiet = True
        archivemail.options.preserve_unread = True
        self.msg = make_message(hours_old=24*181, wantobj=True)

    def testOldRead(self):
        """old read messages should be archived with --preserve-unread"""
        self.msg["Status"] = "RO"
        assert archivemail.should_archive(self.msg)

    def testOldUnread(self):
        """old unread messages should not be archived with --preserve-unread"""
        self.msg["Status"] = "O"
        assert not archivemail.should_archive(self.msg)

    def tearDown(self):
        archivemail.options.quiet = False
        archivemail.options.preserve_unread = False


class TestArchiveMboxSuffix(unittest.TestCase):
    """make sure the 'suffix' option works"""
    def setUp(self):
        archivemail.options.quiet = True

    def testSuffix(self):
        """archiving with specified --suffix arguments"""
        for suffix in ("_static_", "_%B_%Y", "-%Y-%m-%d"):
            mbox_name = "foobar"
            archivemail.options.archive_suffix = suffix
            days_old_max = 180
            parsed_suffix_time = time.time() - days_old_max*24*60*60
            parsed_suffix = time.strftime(suffix,
                time.localtime(parsed_suffix_time))
            archive_name = mbox_name + parsed_suffix
            self.assertEqual(archive_name,
                    archivemail.make_archive_name(mbox_name))

    def tearDown(self):
        archivemail.options.quiet = False
        archivemail.options.archive_suffix = None

class TestArchiveMboxPrefix(unittest.TestCase):
    """make sure the 'prefix' option works"""
    def setUp(self):
        archivemail.options.quiet = True

    def testPrefix(self):
        """archiving with specified --prefix arguments"""
        for archive_prefix in ("_static_", "_%B_%Y", "-%Y-%m-%d", "%Y/%m/"):
            archivemail.options.archive_prefix = archive_prefix
            for mbox_name in "foobar", "/tmp/foobar", "schnorchz/foobar":
                archive_dir, archive_base = os.path.split(mbox_name)
                days = archivemail.options.days_old_max
                tm = time.localtime(time.time() - days*24*60*60)
                prefix = time.strftime(archive_prefix, tm)
                archive_name = os.path.join(archive_dir, prefix + archive_base)
                self.assertEqual(archive_name,
                        archivemail.make_archive_name(mbox_name))

    def tearDown(self):
        archivemail.options.quiet = False
        archivemail.options.archive_prefix = None

class TestArchiveName(unittest.TestCase):
    def setUp(self):
        archivemail.options.quiet = True

    def testArchiveName(self):
        """test the --archive-name option"""
        archive_names = ("custom", ".withdot", "custom_%Y", "%Y/joe")
        mbox = "foobar"
        for name in archive_names:
            archivemail.options.archive_name = name
            days = archivemail.options.days_old_max
            tm = time.localtime(time.time() - days*24*60*60)
            name = time.strftime(name, tm)
            self.assertEqual(archivemail.make_archive_name(mbox), name)

    def tearDown(self):
        archivemail.options.quiet = False
        archivemail.options.archive_name = None

class TestArchiveAffixes(unittest.TestCase):
    def setUp(self):
        self.mbox = "harbsch"
        self.archive_prefix = "wurbl+"
        self.archive_suffix = "+schronk&borsz"
        archivemail.options.quiet = True

    def testDefaultPrefix(self):
        """if no archive name affix is specified, the default archive suffix is appended"""
        self.assertEqual(archivemail.make_archive_name(self.mbox),
                self.mbox + archivemail.options.archive_default_suffix)

    def testPrefixKillsDefaultSuffix(self):
        """if an archive name prefix is specified, the default archive suffix is not appended"""
        archivemail.options.archive_prefix = self.archive_prefix
        self.assertEqual(archivemail.make_archive_name(self.mbox),
                self.archive_prefix + self.mbox)

    def testPrefixAndSuffix(self):
        """specifying both an archive name prefix and suffix works"""
        archivemail.options.archive_prefix = self.archive_prefix
        archivemail.options.archive_suffix = self.archive_suffix
        self.assertEqual(archivemail.make_archive_name(self.mbox),
                self.archive_prefix + self.mbox + self.archive_suffix)

    def tearDown(self):
        archivemail.options.archive_prefix = None
        archivemail.options.archive_suffix = None
        archivemail.options.quiet = False

class TestArchiveHiddenMbox(unittest.TestCase):
    def setUp(self):
        archivemail.options.quiet = True
        self.mbox = ".upper.lower"

    def testHiddenMbox(self):
        """leading dots are stripped from the archive name when no prefix is added"""
        self.assertEqual(archivemail.make_archive_name(self.mbox),
                self.mbox.lstrip('.') +
                archivemail.options.archive_default_suffix)

    def testHiddenMboxPrefixedArchive(self):
        """no dots are stripped from the archive name when a prefix is added"""
        prefix = ".hidden_"
        archivemail.options.archive_prefix = prefix
        self.assertEqual(archivemail.make_archive_name(self.mbox),
                prefix + self.mbox)

    def tearDown(self):
        archivemail.options.quiet = False
        archivemail.options.archive_prefix = None

class TestArchiveDryRun(TestArchive):
    """make sure the 'dry-run' option works"""
    def setUp(self):
        super(TestArchiveDryRun, self).setUp()
        archivemail.options.quiet = True
        archivemail.options.dry_run = True

    def testOld(self):
        """archiving an old mailbox with the 'dry-run' option"""
        self.make_old_mbox(messages=3)
        archivemail.archive(self.mbox)
        self.verify()

    def tearDown(self):
        archivemail.options.dry_run = False
        archivemail.options.quiet = False
        super(TestArchiveDryRun, self).tearDown()


class TestArchiveDelete(TestArchive):
    """make sure the 'delete' option works"""
    def setUp(self):
        super(TestArchiveDelete, self).setUp()
        archivemail.options.quiet = True
        archivemail.options.delete_old_mail = True

    def testNew(self):
        """archiving a new mailbox with the 'delete' option"""
        self.make_new_mbox(messages=3)
        archivemail.archive(self.mbox)
        self.verify()

    def testMixed(self):
        """archiving a mixed mailbox with the 'delete' option"""
        self.make_mixed_mbox(messages=3)
        archivemail.archive(self.mbox)
        self.verify()

    def testOld(self):
        """archiving an old mailbox with the 'delete' option"""
        self.make_old_mbox(messages=3)
        archivemail.archive(self.mbox)
        self.verify()

    def tearDown(self):
        archivemail.options.delete_old_mail = False
        archivemail.options.quiet = False
        super(TestArchiveDelete, self).tearDown()


class TestArchiveCopy(TestArchive):
    """make sure the 'copy' option works"""
    def setUp(self):
        super(TestArchiveCopy, self).setUp()
        archivemail.options.quiet = True
        archivemail.options.copy_old_mail = True

    def testNew(self):
        """archiving a new mailbox with the 'copy' option"""
        self.make_new_mbox(messages=3)
        archivemail.archive(self.mbox)
        self.verify()

    def testMixed(self):
        """archiving a mixed mailbox with the 'copy' option"""
        self.make_mixed_mbox(messages=3)
        archivemail.archive(self.mbox)
        self.verify()

    def testOld(self):
        """archiving an old mailbox with the 'copy' option"""
        self.make_old_mbox(messages=3)
        archivemail.archive(self.mbox)
        self.verify()

    def tearDown(self):
        archivemail.options.copy_old_mail = False
        archivemail.options.quiet = False
        super(TestArchiveCopy, self).tearDown()


class TestArchiveMboxFlagged(unittest.TestCase):
    """make sure the 'include_flagged' option works"""
    def setUp(self):
        archivemail.options.include_flagged = False
        archivemail.options.quiet = True

    def testOld(self):
        """by default, old flagged messages should not be archived"""
        msg = make_message(default_headers={"X-Status": "F"},
                hours_old=24*181, wantobj=True)
        assert not archivemail.should_archive(msg)

    def testIncludeFlaggedNew(self):
        """new flagged messages should not be archived with include_flagged"""
        msg = make_message(default_headers={"X-Status": "F"},
                hours_old=24*179, wantobj=True)
        assert not archivemail.should_archive(msg)

    def testIncludeFlaggedOld(self):
        """old flagged messages should be archived with include_flagged"""
        archivemail.options.include_flagged = True
        msg = make_message(default_headers={"X-Status": "F"},
                hours_old=24*181, wantobj=True)
        assert archivemail.should_archive(msg)

    def tearDown(self):
        archivemail.options.include_flagged = False
        archivemail.options.quiet = False


class TestArchiveMboxOutputDir(unittest.TestCase):
    """make sure that the 'output-dir' option works"""
    def setUp(self):
        archivemail.options.quiet = True

    def testOld(self):
        """archiving an old mailbox with a sepecified output dir"""
        for dir in "/just/a/path", "relative/path":
            archivemail.options.output_dir = dir
            archive_dir = archivemail.make_archive_name("/tmp/mbox")
            self.assertEqual(dir, os.path.dirname(archive_dir))

    def tearDown(self):
        archivemail.options.quiet = False
        archivemail.options.output_dir = None


class TestArchiveMboxUncompressed(TestArchive):
    """make sure that the 'no_compress' option works"""
    mbox_name = None
    new_mbox = None
    old_mbox = None
    copy_name = None

    def setUp(self):
        archivemail.options.quiet = True
        archivemail.options.no_compress = True
        super(TestArchiveMboxUncompressed, self).setUp()

    def testOld(self):
        """archiving an old mailbox uncompressed"""
        self.make_old_mbox(messages=3)
        archivemail.archive(self.mbox)
        self.verify()

    def testNew(self):
        """archiving a new mailbox uncompressed"""
        self.make_new_mbox(messages=3)
        archivemail.archive(self.mbox)
        self.verify()

    def testMixed(self):
        """archiving a mixed mailbox uncompressed"""
        self.make_mixed_mbox(messages=3)
        archivemail.archive(self.mbox)
        self.verify()

    def testOldExists(self):
        """archiving an old mailbox uncopressed with an existing archive"""
        self.make_old_mbox(messages=3, make_old_archive=True)
        archivemail.archive(self.mbox)
        self.verify()

    def tearDown(self):
        archivemail.options.quiet = False
        archivemail.options.no_compress = False
        super(TestArchiveMboxUncompressed, self).tearDown()


class TestArchiveSize(unittest.TestCase):
    """check that the 'size' argument works"""
    def setUp(self):
        archivemail.options.quiet = True
        msg_text = make_message(hours_old=24*181)
        self.msg_size = len(msg_text)
        fp = cStringIO.StringIO(msg_text)
        self.msg = rfc822.Message(fp)

    def testSmaller(self):
        """giving a size argument smaller than the message"""
        archivemail.options.min_size = self.msg_size - 1
        assert archivemail.should_archive(self.msg)

    def testBigger(self):
        """giving a size argument bigger than the message"""
        archivemail.options.min_size = self.msg_size + 1
        assert not archivemail.should_archive(self.msg)

    def tearDown(self):
        archivemail.options.quiet = False
        archivemail.options.min_size = None


class TestXIMAPMessage(TestArchive):
    """Test if IMAP pseudo messages in mboxes are properly handled."""
    def setUp(self):
        super(TestXIMAPMessage, self).setUp()
        archivemail.options.quiet = True

    def testXIMAPMbox(self):
        """IMAP pseudo messages in an mbox are always preserved."""
        self.good_mbox = make_mbox(hours_old=181*24, headers={'X-IMAP': 'dummytext'},
                messages=1)
        self.good_archive = make_mbox(hours_old=181*24, messages=3)
        self.mbox = tempfile.mkstemp()[-1]
        shutil.copyfile(self.good_mbox, self.mbox)
        append_file(self.good_archive, self.mbox)
        archivemail.archive(self.mbox)
        self.verify()

    def tearDown(self):
        super(TestXIMAPMessage, self).tearDown()
        archivemail.options.quiet = False


############# Test archiving maildirs ###############

class TestArchiveMailboxdir(TestCaseInTempdir):
    """Base class defining helper functions for doing test archive runs with
    maildirs."""
    maildir = None           # Maildir that will be processed by archivemail
    orig_maildir_obj = None  # A backup copy of the maildir, a SimpleMaildir object
    remaining_msg = set()    # Filenames of maildir messages that should be preserved
    number_archived = 0      # Number of messages that get archived
    orig_archive = None      # An uncompressed copy of a pre-existing archive,
                             # if one exists

    def setUp(self):
        super(TestArchiveMailboxdir, self).setUp()
        self.orig_maildir_obj = SimpleMaildir()

    def verify(self):
        self._verify_remaining()
        self._verify_archive()

    def _verify_remaining(self):
        """Verify that the preserved messages weren't altered."""
        assert self.maildir
        # Compare maildir with backup object.
        dcmp = filecmp.dircmp(self.maildir, self.orig_maildir_obj.root)
        # Top-level has only directories cur, new, tmp and must be unchanged.
        self.assertEqual(dcmp.left_list, dcmp.right_list)
        found = set()
        for d in dcmp.common_dirs:
            dcmp2 = dcmp.subdirs[d]
            # We need to verify three things.
            # 1. directory is a subset of the original...
            assert not dcmp2.left_only
            # 2. all common files are identical...
            self.assertEqual(dcmp2.common_files, dcmp2.same_files)
            found = found.union([os.path.join(d, x) for x in dcmp2.common_files])
        # 3. exactly the `new' messages (recorded in self.remaining_msg)
        #    were preserved.
        self.assertEqual(found, self.remaining_msg)

    def _verify_archive(self):
        """Verify the archive correctness."""
        # TODO: currently make_archive_name does not include the .gz suffix.
        # Is this something that should be fixed?
        archive = archivemail.make_archive_name(self.maildir)
        if archivemail.options.no_compress:
            iszipped = False
        else:
            archive += '.gz'
            iszipped = True
        if self.number_archived == 0:
            if self.orig_archive:
                assertEqualContent(archive, self.orig_archive, iszipped)
            else:
                assert not os.path.exists(archive)
            return
        fp_new = fp_archive = tmp_archive_name = None
        try:
            if self.orig_archive:
                new_size = os.path.getsize(archive)
                # Brute force: split archive in old and new part and verify the
                # parts separately.  (Of course this destroys the archive.)
                fp_archive = open(archive, "r+")
                fp_archive.seek(self.orig_archive_size)
                fd, tmp_archive_name = tempfile.mkstemp()
                fp_new = os.fdopen(fd, "w")
                shutil.copyfileobj(fp_archive, fp_new)
                fp_new.close()
                fp_archive.truncate(self.orig_archive_size)
                fp_archive.close()
                assertEqualContent(archive, self.orig_archive, iszipped)
                new_archive = tmp_archive_name
            else:
                new_archive = archive
            if archivemail.options.no_compress:
                fp_archive = open(new_archive, "r")
            else:
                fp_archive = FixedGzipFile(new_archive, "r")
            mb = mailbox.UnixMailbox(fp_archive)
            found = 0
            for msg in mb:
                self.verify_maildir_has_msg(self.orig_maildir_obj, msg)
                found += 1
            self.assertEqual(found, self.number_archived)
        finally:
            if tmp_archive_name:
                os.remove(tmp_archive_name)
            if fp_new is not None:
                fp_new.close()
            if fp_archive is not None:
                fp_archive.close()

    def verify_maildir_has_msg(self, maildir, msg):
        """Assert that the given maildir has a copy of the rfc822 message."""
        mid = msg['Message-Id'] # Complains if there is no message-id
        mdir_msg_str, mdir_flags = \
            maildir.get_message_and_mbox_status(mid)
        mbox_flags = set(msg.get('status', '') + msg.get('x-status', ''))
        self.assertEqual(mdir_flags, mbox_flags)

        headers = filter(lambda h: msg.isheader(h) not in ('status', 'x-status'),
                msg.headers)
        headers = "".join(headers)
        msg.rewindbody()
        # Discard last mbox LF which is not part of the message.
        body = msg.fp.read()[:-1]
        msg_str = headers + os.linesep + body
        self.assertEqual(mdir_msg_str, msg_str)

    def add_messages(self, body=None, headers=None, hours_old=0, messages=1):
        for count in range(messages):
            msg = make_message(body, default_headers=headers, mkfrom=False,
                    hours_old=hours_old)
            self.orig_maildir_obj.write(msg, new=False)

    def make_maildir(self, mkold, mknew, body=None, headers=None, messages=1,
            make_old_archive=False):
        mailbox_does_change = not (archivemail.options.dry_run or
                archivemail.options.copy_old_mail)
        archive_does_change = not (archivemail.options.dry_run or
                archivemail.options.delete_old_mail)
        if mknew:
            self.add_messages(body, headers, 179*24, messages)
            if archive_does_change and archivemail.options.archive_all:
                self.number_archived += messages
            if mailbox_does_change:
                self.remaining_msg = set(self.orig_maildir_obj.get_all_filenames())
        if mkold:
            self.add_messages(body, headers, 181*24, messages)
            if archive_does_change:
                self.number_archived += messages
        if not mailbox_does_change:
            self.remaining_msg = set(self.orig_maildir_obj.get_all_filenames())
        self.maildir = copy_maildir(self.orig_maildir_obj.root)
        if make_old_archive:
            archive = archivemail.make_archive_name(self.maildir)
            self.orig_archive = make_archive_and_plain_copy(archive)
            # FIXME: .gz extension handling is a mess II
            if not archivemail.options.no_compress:
                archive += '.gz'
            self.orig_archive_size = os.path.getsize(archive)

class TestEmptyMaildir(TestCaseInTempdir):
    def setUp(self):
        super(TestEmptyMaildir, self).setUp()
        archivemail.options.quiet = True

    def testEmpty(self):
        """Archiving an empty maildir should not result in an archive."""
        self.mdir = SimpleMaildir()
        archivemail.archive(self.mdir.root)
        assert not os.path.exists(self.mdir.root + '_archive.gz')

    def tearDown(self):
        super(TestEmptyMaildir, self).tearDown()
        archivemail.options.quiet = False

class TestMaildir(TestArchiveMailboxdir):
    def setUp(self):
        super(TestMaildir, self).setUp()
        archivemail.options.quiet = True

    def testOld(self):
        self.make_maildir(True, False, messages=3)
        archivemail.archive(self.maildir)
        self.verify()

    def testNew(self):
        self.make_maildir(False, True, messages=3)
        archivemail.archive(self.maildir)
        self.verify()

    def testMixed(self):
        self.make_maildir(True, True, messages=3)
        archivemail.archive(self.maildir)
        self.verify()

    def testMixedExisting(self):
        self.make_maildir(True, True, messages=3, make_old_archive=True)
        archivemail.archive(self.maildir)
        self.verify()

    def tearDown(self):
        archivemail.options.quiet = False
        super(TestMaildir, self).tearDown()


class TestMaildirPreserveUnread(TestCaseInTempdir):
    """Test if the preserve_unread option works with maildirs."""
    def setUp(self):
        super(TestMaildirPreserveUnread, self).setUp()
        archivemail.options.quiet = True
        archivemail.options.preserve_unread = True

    def testOldRead(self):
        """--preserve-unread archives old read messages in a maildir."""
        smd = SimpleMaildir("orig")
        msg = make_message(hours_old=24*181)
        smd.write(msg, new=False, flags='S')
        md = mailbox.Maildir(smd.root)
        msg_obj = md.next()
        assert archivemail.should_archive(msg_obj)

    def testOldUnread(self):
        """--preserve-unread preserves old unread messages in a maildir."""
        smd = SimpleMaildir("orig")
        msg = make_message(hours_old=24*181)
        smd.write(msg, new=False)
        md = mailbox.Maildir(smd.root)
        msg_obj = md.next()
        assert not archivemail.should_archive(msg_obj)

    def tearDown(self):
        archivemail.options.quiet = False
        archivemail.options.preserve_unread = False
        super(TestMaildirPreserveUnread, self).tearDown()

class TestMaildirAll(TestArchiveMailboxdir):
    def setUp(self):
        super(TestMaildirAll, self).setUp()
        archivemail.options.quiet = True
        archivemail.options.archive_all = True

    def testNew(self):
        """New maildir messages should be archived with --all"""
        self.add_messages(hours_old=24*181)
        md = mailbox.Maildir(self.orig_maildir_obj.root)
        msg_obj = md.next()
        assert archivemail.should_archive(msg_obj)

    def testOld(self):
        """Old maildir messages should be archived with --all"""
        self.add_messages(hours_old=24*179)
        md = mailbox.Maildir(self.orig_maildir_obj.root)
        msg_obj = md.next()
        assert archivemail.should_archive(msg_obj)

    def tearDown(self):
        super(TestMaildirAll, self).tearDown()
        archivemail.options.quiet = False
        archivemail.options.archive_all = False

class TestMaildirDryRun(TestArchiveMailboxdir):
    def setUp(self):
        super(TestMaildirDryRun, self).setUp()
        archivemail.options.quiet = True
        archivemail.options.dry_run = True

    def testOld(self):
        """archiving an old maildir mailbox with the 'dry-run' option"""
        self.make_maildir(True, False)
        archivemail.archive(self.maildir)
        self.verify()

    def tearDown(self):
        super(TestMaildirDryRun, self).tearDown()
        archivemail.options.quiet = False
        archivemail.options.dry_run = False

class TestMaildirDelete(TestArchiveMailboxdir):
    def setUp(self):
        super(TestMaildirDelete, self).setUp()
        archivemail.options.quiet = True
        archivemail.options.delete_old_mail = True

    def testOld(self):
        """archiving an old maildir mailbox with the 'delete' option"""
        self.make_maildir(True, False)
        archivemail.archive(self.maildir)
        self.verify()

    def testNew(self):
        """archiving a new maildir mailbox with the 'delete' option"""
        self.make_maildir(False, True)
        archivemail.archive(self.maildir)
        self.verify()

    def tearDown(self):
        super(TestMaildirDelete, self).tearDown()
        archivemail.options.quiet = False
        archivemail.options.delete_old_mail = False

class TestMaildirCopy(TestArchiveMailboxdir):
    def setUp(self):
        super(TestMaildirCopy, self).setUp()
        archivemail.options.quiet = True
        archivemail.options.copy_old_mail = True

    def testOld(self):
        """archiving an old maildir mailbox with the 'copy' option"""
        self.make_maildir(True, False)
        archivemail.archive(self.maildir)
        self.verify()

    def testNew(self):
        """archiving a new maildir mailbox with the 'copy' option"""
        self.make_maildir(False, True)
        archivemail.archive(self.maildir)
        self.verify()

    def tearDown(self):
        super(TestMaildirCopy, self).tearDown()
        archivemail.options.quiet = False
        archivemail.options.copy_old_mail = False

class TestArchiveMaildirFlagged(TestCaseInTempdir):
    """make sure the 'include_flagged' option works with maildir messages"""
    def setUp(self):
        super(TestArchiveMaildirFlagged, self).setUp()
        archivemail.options.include_flagged = False
        archivemail.options.quiet = True

    def testOld(self):
        """by default, old flagged maildir messages should not be archived"""
        smd = SimpleMaildir("orig")
        msg = make_message(hours_old=24*181)
        smd.write(msg, new=False, flags='F')
        md = mailbox.Maildir(smd.root)
        msg_obj = md.next()
        assert not archivemail.should_archive(msg_obj)

    def testIncludeFlaggedNew(self):
        """new flagged maildir messages should not be archived with include_flagged"""
        smd = SimpleMaildir("orig")
        msg = make_message(hours_old=24*179)
        smd.write(msg, new=False, flags='F')
        md = mailbox.Maildir(smd.root)
        msg_obj = md.next()
        assert not archivemail.should_archive(msg_obj)

    def testIncludeFlaggedOld(self):
        """old flagged maildir messages should be archived with include_flagged"""
        archivemail.options.include_flagged = True
        smd = SimpleMaildir("orig")
        msg = make_message(hours_old=24*181)
        smd.write(msg, new=False, flags='F')
        md = mailbox.Maildir(smd.root)
        msg_obj = md.next()
        assert archivemail.should_archive(msg_obj)

    def tearDown(self):
        super(TestArchiveMaildirFlagged, self).tearDown()
        archivemail.options.include_flagged = False
        archivemail.options.quiet = False

class TestArchiveMaildirSize(TestCaseInTempdir):
    """check that the 'size' argument works with maildir messages"""
    def setUp(self):
        super(TestArchiveMaildirSize, self).setUp()
        archivemail.options.quiet = True
        msg = make_message(hours_old=24*181)
        self.msg_size = len(msg)
        smd = SimpleMaildir("orig")
        smd.write(msg, new=False)
        md = mailbox.Maildir(smd.root)
        self.msg_obj = md.next()

    def testSmaller(self):
        """giving a size argument smaller than the maildir message"""
        archivemail.options.min_size = self.msg_size - 1
        assert archivemail.should_archive(self.msg_obj)

    def testBigger(self):
        """giving a size argument bigger than the maildir message"""
        archivemail.options.min_size = self.msg_size + 1
        assert not archivemail.should_archive(self.msg_obj)

    def tearDown(self):
        super(TestArchiveMaildirSize, self).tearDown()
        archivemail.options.quiet = False
        archivemail.options.min_size = None

########## helper routines ############

def make_message(body=None, default_headers={}, hours_old=None, mkfrom=False, wantobj=False):
    headers = copy.copy(default_headers)
    if not headers:
        headers = {}
    headers['Message-Id'] = make_msgid()
    if not headers.has_key('Date'):
        time_message = time.time() - (60 * 60 * hours_old)
        headers['Date'] = time.asctime(time.localtime(time_message))
    if not headers.has_key('From'):
        headers['From'] = "sender@dummy.domain"        
    if not headers.has_key('To'):
        headers['To'] = "receipient@dummy.domain"        
    if not headers.has_key('Subject'):
        headers['Subject'] = "This is the subject"
    if mkfrom and not headers.has_key('From_'):
        headers['From_'] = "%s %s" % (headers['From'], headers['Date'])
    if not body:
        body = "This is the message body"

    msg = ""
    if headers.has_key('From_'):
        msg = msg + ("From %s\n" % headers['From_'])
        del headers['From_']
    for key in headers.keys():
        if headers[key] is not None:
            msg = msg + ("%s: %s\n" % (key, headers[key]))
    msg = msg + "\n\n" + body + "\n\n"
    if not wantobj:
        return msg
    fp = cStringIO.StringIO(msg)
    return rfc822.Message(fp)

def append_file(source, dest):
    """appends the file named 'source' to the file named 'dest'"""
    assert os.path.isfile(source)
    assert os.path.isfile(dest)
    read = open(source, "r")
    write = open(dest, "a+")
    shutil.copyfileobj(read,write)
    read.close()
    write.close()


def make_mbox(body=None, headers=None, hours_old=0, messages=1):
    assert tempfile.tempdir
    fd, name = tempfile.mkstemp()
    file = os.fdopen(fd, "w")
    for count in range(messages):
        msg = make_message(body=body, default_headers=headers, 
            mkfrom=True, hours_old=hours_old)
        file.write(msg)
    file.close()
    return name

def make_archive_and_plain_copy(archive_name):
    """Make an mbox archive of the given name like archivemail may have
    created it.  Also make an uncompressed copy of this archive and return its
    name."""
    copy_fd, copy_name = tempfile.mkstemp()
    copy_fp = os.fdopen(copy_fd, "w")
    if archivemail.options.no_compress:
        fd = os.open(archive_name, os.O_WRONLY|os.O_EXCL|os.O_CREAT)
        fp = os.fdopen(fd, "w")
    else:
        archive_name += ".gz"
        fd = os.open(archive_name, os.O_WRONLY|os.O_EXCL|os.O_CREAT)
        rawfp = os.fdopen(fd, "w")
        fp = gzip.GzipFile(fileobj=rawfp)
    for count in range(3):
        msg = make_message(hours_old=24*360)
        fp.write(msg)
        copy_fp.write(msg)
    fp.close()
    copy_fp.close()
    if not archivemail.options.no_compress:
        rawfp.close()
    return copy_name

def copy_maildir(maildir, prefix="tmp"):
    """Create a copy of the given maildir and return the absolute path of the
    new direcory."""
    newdir = tempfile.mkdtemp(prefix=prefix)
    for d in "cur", "new", "tmp":
        shutil.copytree(os.path.join(maildir, d), os.path.join(newdir, d))
    return newdir

def assertEqualContent(firstfile, secondfile, zippedfirst=False):
    """Verify that the two files exist and have identical content. If zippedfirst
    is True, assume that firstfile is gzip-compressed."""
    assert os.path.exists(firstfile)
    assert os.path.exists(secondfile)
    if zippedfirst:
        try:
            fp1 = gzip.GzipFile(firstfile, "r")
            fp2 = open(secondfile, "r")
            assert cmp_fileobj(fp1, fp2)
        finally:
            fp1.close()
            fp2.close()
    else:
        assert filecmp.cmp(firstfile, secondfile, shallow=0)

def cmp_fileobj(fp1, fp2):
    """Return if reading the fileobjects yields identical content."""
    bufsize = 8192
    while True:
        b1 = fp1.read(bufsize)
        b2 = fp2.read(bufsize)
        if b1 != b2:
            return False
        if not b1:
            return True

if __name__ == "__main__":
    unittest.main()