diff options
Diffstat (limited to 'Lib/test/test_email/test_generator.py')
| -rw-r--r-- | Lib/test/test_email/test_generator.py | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/Lib/test/test_email/test_generator.py b/Lib/test/test_email/test_generator.py new file mode 100644 index 0000000000..8917408171 --- /dev/null +++ b/Lib/test/test_email/test_generator.py @@ -0,0 +1,199 @@ +import io +import textwrap +import unittest +from email import message_from_string, message_from_bytes +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)) + + +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) + + +if __name__ == '__main__': + unittest.main() |