cpython/Lib/test/test_email/test_pickleable.py

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import unittest
import textwrap
import copy
import pickle
import email
import email.message
from email import policy
from email.headerregistry import HeaderRegistry
from test.test_email import TestEmailBase, parameterize
@parameterize
class TestPickleCopyHeader(TestEmailBase):
header_factory = HeaderRegistry()
unstructured = header_factory('subject', 'this is a test')
header_params = {
'subject': ('subject', 'this is a test'),
'from': ('from', 'frodo@mordor.net'),
'to': ('to', 'a: k@b.com, y@z.com;, j@f.com'),
'date': ('date', 'Tue, 29 May 2012 09:24:26 +1000'),
}
def header_as_deepcopy(self, name, value):
header = self.header_factory(name, value)
h = copy.deepcopy(header)
self.assertEqual(str(h), str(header))
def header_as_pickle(self, name, value):
header = self.header_factory(name, value)
p = pickle.dumps(header)
h = pickle.loads(p)
self.assertEqual(str(h), str(header))
@parameterize
class TestPickleCopyMessage(TestEmailBase):
# Message objects are a sequence, so we have to make them a one-tuple in
# msg_params so they get passed to the parameterized test method as a
# single argument instead of as a list of headers.
msg_params = {}
# Note: there will be no custom header objects in the parsed message.
msg_params['parsed'] = (email.message_from_string(textwrap.dedent("""\
Date: Tue, 29 May 2012 09:24:26 +1000
From: frodo@mordor.net
To: bilbo@underhill.org
Subject: help
I think I forgot the ring.
"""), policy=policy.default),)
msg_params['created'] = (email.message.Message(policy=policy.default),)
msg_params['created'][0]['Date'] = 'Tue, 29 May 2012 09:24:26 +1000'
msg_params['created'][0]['From'] = 'frodo@mordor.net'
msg_params['created'][0]['To'] = 'bilbo@underhill.org'
msg_params['created'][0]['Subject'] = 'help'
msg_params['created'][0].set_payload('I think I forgot the ring.')
def msg_as_deepcopy(self, msg):
msg2 = copy.deepcopy(msg)
self.assertEqual(msg2.as_string(), msg.as_string())
def msg_as_pickle(self, msg):
p = pickle.dumps(msg)
msg2 = pickle.loads(p)
self.assertEqual(msg2.as_string(), msg.as_string())
if __name__ == '__main__':
unittest.main()