244 lines
9.1 KiB
Python
244 lines
9.1 KiB
Python
import io
|
|
import textwrap
|
|
import unittest
|
|
from email import message_from_string, message_from_bytes
|
|
from email.message import EmailMessage
|
|
from email.generator import Generator, BytesGenerator
|
|
from email import policy
|
|
from test.test_email import TestEmailBase, parameterize
|
|
|
|
|
|
@parameterize
|
|
class TestGeneratorBase:
|
|
|
|
policy = policy.default
|
|
|
|
def msgmaker(self, msg, policy=None):
|
|
policy = self.policy if policy is None else policy
|
|
return self.msgfunc(msg, policy=policy)
|
|
|
|
refold_long_expected = {
|
|
0: textwrap.dedent("""\
|
|
To: whom_it_may_concern@example.com
|
|
From: nobody_you_want_to_know@example.com
|
|
Subject: We the willing led by the unknowing are doing the
|
|
impossible for the ungrateful. We have done so much for so long with so little
|
|
we are now qualified to do anything with nothing.
|
|
|
|
None
|
|
"""),
|
|
# From is wrapped because wrapped it fits in 40.
|
|
40: textwrap.dedent("""\
|
|
To: whom_it_may_concern@example.com
|
|
From:
|
|
nobody_you_want_to_know@example.com
|
|
Subject: We the willing led by the
|
|
unknowing are doing the impossible for
|
|
the ungrateful. We have done so much
|
|
for so long with so little we are now
|
|
qualified to do anything with nothing.
|
|
|
|
None
|
|
"""),
|
|
# Neither to nor from fit even if put on a new line,
|
|
# so we leave them sticking out on the first line.
|
|
20: textwrap.dedent("""\
|
|
To: whom_it_may_concern@example.com
|
|
From: nobody_you_want_to_know@example.com
|
|
Subject: We the
|
|
willing led by the
|
|
unknowing are doing
|
|
the impossible for
|
|
the ungrateful. We
|
|
have done so much
|
|
for so long with so
|
|
little we are now
|
|
qualified to do
|
|
anything with
|
|
nothing.
|
|
|
|
None
|
|
"""),
|
|
}
|
|
refold_long_expected[100] = refold_long_expected[0]
|
|
|
|
refold_all_expected = refold_long_expected.copy()
|
|
refold_all_expected[0] = (
|
|
"To: whom_it_may_concern@example.com\n"
|
|
"From: nobody_you_want_to_know@example.com\n"
|
|
"Subject: We the willing led by the unknowing are doing the "
|
|
"impossible for the ungrateful. We have done so much for "
|
|
"so long with so little we are now qualified to do anything "
|
|
"with nothing.\n"
|
|
"\n"
|
|
"None\n")
|
|
refold_all_expected[100] = (
|
|
"To: whom_it_may_concern@example.com\n"
|
|
"From: nobody_you_want_to_know@example.com\n"
|
|
"Subject: We the willing led by the unknowing are doing the "
|
|
"impossible for the ungrateful. We have\n"
|
|
" done so much for so long with so little we are now qualified "
|
|
"to do anything with nothing.\n"
|
|
"\n"
|
|
"None\n")
|
|
|
|
length_params = [n for n in refold_long_expected]
|
|
|
|
def length_as_maxheaderlen_parameter(self, n):
|
|
msg = self.msgmaker(self.typ(self.refold_long_expected[0]))
|
|
s = self.ioclass()
|
|
g = self.genclass(s, maxheaderlen=n, policy=self.policy)
|
|
g.flatten(msg)
|
|
self.assertEqual(s.getvalue(), self.typ(self.refold_long_expected[n]))
|
|
|
|
def length_as_max_line_length_policy(self, n):
|
|
msg = self.msgmaker(self.typ(self.refold_long_expected[0]))
|
|
s = self.ioclass()
|
|
g = self.genclass(s, policy=self.policy.clone(max_line_length=n))
|
|
g.flatten(msg)
|
|
self.assertEqual(s.getvalue(), self.typ(self.refold_long_expected[n]))
|
|
|
|
def length_as_maxheaderlen_parm_overrides_policy(self, n):
|
|
msg = self.msgmaker(self.typ(self.refold_long_expected[0]))
|
|
s = self.ioclass()
|
|
g = self.genclass(s, maxheaderlen=n,
|
|
policy=self.policy.clone(max_line_length=10))
|
|
g.flatten(msg)
|
|
self.assertEqual(s.getvalue(), self.typ(self.refold_long_expected[n]))
|
|
|
|
def length_as_max_line_length_with_refold_none_does_not_fold(self, n):
|
|
msg = self.msgmaker(self.typ(self.refold_long_expected[0]))
|
|
s = self.ioclass()
|
|
g = self.genclass(s, policy=self.policy.clone(refold_source='none',
|
|
max_line_length=n))
|
|
g.flatten(msg)
|
|
self.assertEqual(s.getvalue(), self.typ(self.refold_long_expected[0]))
|
|
|
|
def length_as_max_line_length_with_refold_all_folds(self, n):
|
|
msg = self.msgmaker(self.typ(self.refold_long_expected[0]))
|
|
s = self.ioclass()
|
|
g = self.genclass(s, policy=self.policy.clone(refold_source='all',
|
|
max_line_length=n))
|
|
g.flatten(msg)
|
|
self.assertEqual(s.getvalue(), self.typ(self.refold_all_expected[n]))
|
|
|
|
def test_crlf_control_via_policy(self):
|
|
source = "Subject: test\r\n\r\ntest body\r\n"
|
|
expected = source
|
|
msg = self.msgmaker(self.typ(source))
|
|
s = self.ioclass()
|
|
g = self.genclass(s, policy=policy.SMTP)
|
|
g.flatten(msg)
|
|
self.assertEqual(s.getvalue(), self.typ(expected))
|
|
|
|
def test_flatten_linesep_overrides_policy(self):
|
|
source = "Subject: test\n\ntest body\n"
|
|
expected = source
|
|
msg = self.msgmaker(self.typ(source))
|
|
s = self.ioclass()
|
|
g = self.genclass(s, policy=policy.SMTP)
|
|
g.flatten(msg, linesep='\n')
|
|
self.assertEqual(s.getvalue(), self.typ(expected))
|
|
|
|
def test_set_mangle_from_via_policy(self):
|
|
source = textwrap.dedent("""\
|
|
Subject: test that
|
|
from is mangeld in the body!
|
|
|
|
From time to time I write a rhyme.
|
|
""")
|
|
variants = (
|
|
(None, True),
|
|
(policy.compat32, True),
|
|
(policy.default, False),
|
|
(policy.default.clone(mangle_from_=True), True),
|
|
)
|
|
for p, mangle in variants:
|
|
expected = source.replace('From ', '>From ') if mangle else source
|
|
with self.subTest(policy=p, mangle_from_=mangle):
|
|
msg = self.msgmaker(self.typ(source))
|
|
s = self.ioclass()
|
|
g = self.genclass(s, policy=p)
|
|
g.flatten(msg)
|
|
self.assertEqual(s.getvalue(), self.typ(expected))
|
|
|
|
|
|
class TestGenerator(TestGeneratorBase, TestEmailBase):
|
|
|
|
msgfunc = staticmethod(message_from_string)
|
|
genclass = Generator
|
|
ioclass = io.StringIO
|
|
typ = str
|
|
|
|
|
|
class TestBytesGenerator(TestGeneratorBase, TestEmailBase):
|
|
|
|
msgfunc = staticmethod(message_from_bytes)
|
|
genclass = BytesGenerator
|
|
ioclass = io.BytesIO
|
|
typ = lambda self, x: x.encode('ascii')
|
|
|
|
def test_cte_type_7bit_handles_unknown_8bit(self):
|
|
source = ("Subject: Maintenant je vous présente mon "
|
|
"collègue\n\n").encode('utf-8')
|
|
expected = ('Subject: Maintenant je vous =?unknown-8bit?q?'
|
|
'pr=C3=A9sente_mon_coll=C3=A8gue?=\n\n').encode('ascii')
|
|
msg = message_from_bytes(source)
|
|
s = io.BytesIO()
|
|
g = BytesGenerator(s, policy=self.policy.clone(cte_type='7bit'))
|
|
g.flatten(msg)
|
|
self.assertEqual(s.getvalue(), expected)
|
|
|
|
def test_cte_type_7bit_transforms_8bit_cte(self):
|
|
source = textwrap.dedent("""\
|
|
From: foo@bar.com
|
|
To: Dinsdale
|
|
Subject: Nudge nudge, wink, wink
|
|
Mime-Version: 1.0
|
|
Content-Type: text/plain; charset="latin-1"
|
|
Content-Transfer-Encoding: 8bit
|
|
|
|
oh là là, know what I mean, know what I mean?
|
|
""").encode('latin1')
|
|
msg = message_from_bytes(source)
|
|
expected = textwrap.dedent("""\
|
|
From: foo@bar.com
|
|
To: Dinsdale
|
|
Subject: Nudge nudge, wink, wink
|
|
Mime-Version: 1.0
|
|
Content-Type: text/plain; charset="iso-8859-1"
|
|
Content-Transfer-Encoding: quoted-printable
|
|
|
|
oh l=E0 l=E0, know what I mean, know what I mean?
|
|
""").encode('ascii')
|
|
s = io.BytesIO()
|
|
g = BytesGenerator(s, policy=self.policy.clone(cte_type='7bit',
|
|
linesep='\n'))
|
|
g.flatten(msg)
|
|
self.assertEqual(s.getvalue(), expected)
|
|
|
|
def test_smtputf8_policy(self):
|
|
msg = EmailMessage()
|
|
msg['From'] = "Páolo <főo@bar.com>"
|
|
msg['To'] = 'Dinsdale'
|
|
msg['Subject'] = 'Nudge nudge, wink, wink \u1F609'
|
|
msg.set_content("oh là là, know what I mean, know what I mean?")
|
|
expected = textwrap.dedent("""\
|
|
From: Páolo <főo@bar.com>
|
|
To: Dinsdale
|
|
Subject: Nudge nudge, wink, wink \u1F609
|
|
Content-Type: text/plain; charset="utf-8"
|
|
Content-Transfer-Encoding: 8bit
|
|
MIME-Version: 1.0
|
|
|
|
oh là là, know what I mean, know what I mean?
|
|
""").encode('utf-8').replace(b'\n', b'\r\n')
|
|
s = io.BytesIO()
|
|
g = BytesGenerator(s, policy=policy.SMTPUTF8)
|
|
g.flatten(msg)
|
|
self.assertEqual(s.getvalue(), expected)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main()
|