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Þ'¯°ÌME[YéïĵÂCå½ Ué©Áû'Ê9%eÔðNU”ë‘ÌsD3/®+UI˜9h.WC”빓$#:pz:YÓ ¿xž* ³$Í +$kñAŠ‹†¢ Uê>¸)_š¬÷©ßAÂÔb9ÇU ¯¾á•9¯ÏÏ÷O÷¼¼Fähal1‰3Ì[Ïr•´UCksNÐ] R‘¸¥H+§Šé†c©vÖÞ0iÓ76s†î!§=ß ¼~Ô'°Ãmäoäš³ªøi1úÉ)³yV8 CLÄØÁ‘WYïi€H6ÖÑiámø^ÈY´°Ñ7¥Û*—Ñ©L«Qƒï—Ùrÿ ›£Ð*š¸ˆL©ˆ$ˆ ÷¾D§9È®«qbqC)–ˆïv´çñsÑVT­Ø, <àïºÀO«Jý·õ àfPìð .wFšir´þ’2_Y *Æ€x\« ì€9š@ Ž|F⇥ˆkZ@hÖÄ0t¿-<“‹qµ¾*ZL¤Ú)&BJpÓF5=$„at*Zš$’ÑtdûÝRI1 2Ž‰$€$I$#‰SÞ’Hë¬ï;Á$¡t$’`<(ñÇt)$‡Ð.Êf¢X’Kt=Éé$‚ˆªè¢oÝëòI%Rgcª÷ŠyI%¡‰ÿ !ñ)´õ $¤ Ô’IIGÿÙimport io import types import textwrap import unittest import email.errors import email.policy import email.parser import email.generator import email.message from email import headerregistry def make_defaults(base_defaults, differences): defaults = base_defaults.copy() defaults.update(differences) return defaults class PolicyAPITests(unittest.TestCase): longMessage = True # Base default values. compat32_defaults = { 'max_line_length': 78, 'linesep': '\n', 'cte_type': '8bit', 'raise_on_defect': False, 'mangle_from_': True, 'message_factory': None, } # These default values are the ones set on email.policy.default. # If any of these defaults change, the docs must be updated. policy_defaults = compat32_defaults.copy() policy_defaults.update({ 'utf8': False, 'raise_on_defect': False, 'header_factory': email.policy.EmailPolicy.header_factory, 'refold_source': 'long', 'content_manager': email.policy.EmailPolicy.content_manager, 'mangle_from_': False, 'message_factory': email.message.EmailMessage, }) # For each policy under test, we give here what we expect the defaults to # be for that policy. The second argument to make defaults is the # difference between the base defaults and that for the particular policy. new_policy = email.policy.EmailPolicy() policies = { email.policy.compat32: make_defaults(compat32_defaults, {}), email.policy.default: make_defaults(policy_defaults, {}), email.policy.SMTP: make_defaults(policy_defaults, {'linesep': '\r\n'}), email.policy.SMTPUTF8: make_defaults(policy_defaults, {'linesep': '\r\n', 'utf8': True}), email.policy.HTTP: make_defaults(policy_defaults, {'linesep': '\r\n', 'max_line_length': None}), email.policy.strict: make_defaults(policy_defaults, {'raise_on_defect': True}), new_policy: make_defaults(policy_defaults, {}), } # Creating a new policy creates a new header factory. There is a test # later that proves this. policies[new_policy]['header_factory'] = new_policy.header_factory def test_defaults(self): for policy, expected in self.policies.items(): for attr, value in expected.items(): with self.subTest(policy=policy, attr=attr): self.assertEqual(getattr(policy, attr), value, ("change {} docs/docstrings if defaults have " "changed").format(policy)) def test_all_attributes_covered(self): for policy, expected in self.policies.items(): for attr in dir(policy): with self.subTest(policy=policy, attr=attr): if (attr.startswith('_') or isinstance(getattr(email.policy.EmailPolicy, attr), types.FunctionType)): continue else: self.assertIn(attr, expected, "{} is not fully tested".format(attr)) def test_abc(self): with self.assertRaises(TypeError) as cm: email.policy.Policy() msg = str(cm.exception) abstract_methods = ('fold', 'fold_binary', 'header_fetch_parse', 'header_source_parse', 'header_store_parse') for method in abstract_methods: self.assertIn(method, msg) def test_policy_is_immutable(self): for policy, defaults in self.policies.items(): for attr in defaults: with self.assertRaisesRegex(AttributeError, attr+".*read-only"): setattr(policy, attr, None) with self.assertRaisesRegex(AttributeError, 'no attribute.*foo'): policy.foo = None def test_set_policy_attrs_when_cloned(self): # None of the attributes has a default value of None, so we set them # all to None in the clone call and check that it worked. for policyclass, defaults in self.policies.items(): testattrdict = {attr: None for attr in defaults} policy = policyclass.clone(**testattrdict) for attr in defaults: self.assertIsNone(getattr(policy, attr)) def test_reject_non_policy_keyword_when_called(self): for policyclass in self.policies: with self.assertRaises(TypeError): policyclass(this_keyword_should_not_be_valid=None) with self.assertRaises(TypeError): policyclass(newtline=None) def test_policy_addition(self): expected = self.policy_defaults.copy() p1 = email.policy.default.clone(max_line_length=100) p2 = email.policy.default.clone(max_line_length=50) added = p1 + p2 expected.update(max_line_length=50) for attr, value in expected.items(): self.assertEqual(getattr(added, attr), value) added = p2 + p1 expected.update(max_line_length=100) for attr, value in expected.items(): self.assertEqual(getattr(added, attr), value) added = added + email.policy.default for attr, value in expected.items(): self.assertEqual(getattr(added, attr), value) def test_fold_zero_max_line_length(self): expected = 'Subject: =?utf-8?q?=C3=A1?=\n' msg = email.message.EmailMessage() msg['Subject'] = 'á' p1 = email.policy.default.clone(max_line_length=0) p2 = email.policy.default.clone(max_line_length=None) self.assertEqual(p1.fold('Subject', msg['Subject']), expected) self.assertEqual(p2.fold('Subject', msg['Subject']), expected) def test_register_defect(self): class Dummy: def __init__(self): self.defects = [] obj = Dummy() defect = object() policy = email.policy.EmailPolicy() policy.register_defect(obj, defect) self.assertEqual(obj.defects, [defect]) defect2 = object() policy.register_defect(obj, defect2) self.assertEqual(obj.defects, [defect, defect2]) class MyObj: def __init__(self): self.defects = [] class MyDefect(Exception): pass def test_handle_defect_raises_on_strict(self): foo = self.MyObj() defect = self.MyDefect("the telly is broken") with self.assertRaisesRegex(self.MyDefect, "the telly is broken"): email.policy.strict.handle_defect(foo, defect) def test_handle_defect_registers_defect(self): foo = self.MyObj() defect1 = self.MyDefect("one") email.policy.default.handle_defect(foo, defect1) self.assertEqual(foo.defects, [defect1]) defect2 = self.MyDefect("two") email.policy.default.handle_defect(foo, defect2) self.assertEqual(foo.defects, [defect1, defect2]) class MyPolicy(email.policy.EmailPolicy): defects = None def __init__(self, *args, **kw): super().__init__(*args, defects=[], **kw) def register_defect(self, obj, defect): self.defects.append(defect) def test_overridden_register_defect_still_raises(self): foo = self.MyObj() defect = self.MyDefect("the telly is broken") with self.assertRaisesRegex(self.MyDefect, "the telly is broken"): self.MyPolicy(raise_on_defect=True).handle_defect(foo, defect) def test_overridden_register_defect_works(self): foo = self.MyObj() defect1 = self.MyDefect("one") my_policy = self.MyPolicy() my_policy.handle_defect(foo, defect1) self.assertEqual(my_policy.defects, [defect1]) self.assertEqual(foo.defects, []) defect2 = self.MyDefect("two") my_policy.handle_defect(foo, defect2) self.assertEqual(my_policy.defects, [defect1, defect2]) self.assertEqual(foo.defects, []) def test_default_header_factory(self): h = email.policy.default.header_factory('Test', 'test') self.assertEqual(h.name, 'Test') self.assertIsInstance(h, headerregistry.UnstructuredHeader) self.assertIsInstance(h, headerregistry.BaseHeader) class Foo: parse = headerregistry.UnstructuredHeader.parse def test_each_Policy_gets_unique_factory(self): policy1 = email.policy.EmailPolicy() policy2 = email.policy.EmailPolicy() policy1.header_factory.map_to_type('foo', self.Foo) h = policy1.header_factory('foo', 'test') self.assertIsInstance(h, self.Foo) self.assertNotIsInstance(h, headerregistry.UnstructuredHeader) h = policy2.header_factory('foo', 'test') self.assertNotIsInstance(h, self.Foo) self.assertIsInstance(h, headerregistry.UnstructuredHeader) def test_clone_copies_factory(self): policy1 = email.policy.EmailPolicy() policy2 = policy1.clone() policy1.header_factory.map_to_type('foo', self.Foo) h = policy1.header_factory('foo', 'test') self.assertIsInstance(h, self.Foo) h = policy2.header_factory('foo', 'test') self.assertIsInstance(h, self.Foo) def test_new_factory_overrides_default(self): mypolicy = email.policy.EmailPolicy() myfactory = mypolicy.header_factory newpolicy = mypolicy + email.policy.strict self.assertEqual(newpolicy.header_factory, myfactory) newpolicy = email.policy.strict + mypolicy self.assertEqual(newpolicy.header_factory, myfactory) def test_adding_default_policies_preserves_default_factory(self): newpolicy = email.policy.default + email.policy.strict self.assertEqual(newpolicy.header_factory, email.policy.EmailPolicy.header_factory) self.assertEqual(newpolicy.__dict__, {'raise_on_defect': True}) def test_non_ascii_chars_do_not_cause_inf_loop(self): policy = email.policy.default.clone(max_line_length=20) actual = policy.fold('Subject', 'ą' * 12) self.assertEqual( actual, 'Subject: \n' + 12 * ' =?utf-8?q?=C4=85?=\n') def test_short_maxlen_error(self): # RFC 2047 chrome takes up 7 characters, plus the length of the charset # name, so folding should fail if maxlen is lower than the minimum # required length for a line. # Note: This is only triggered when there is a single word longer than # max_line_length, hence the 1234567890 at the end of this whimsical # subject. This is because when we encounter a word longer than # max_line_length, it is broken down into encoded words to fit # max_line_length. If the max_line_length isn't large enough to even # contain the RFC 2047 chrome (`?=?q??=`), we fail. subject = "Melt away the pounds with this one simple trick! 1234567890" for maxlen in [3, 7, 9]: with self.subTest(maxlen=maxlen): policy = email.policy.default.clone(max_line_length=maxlen) with self.assertRaises(email.errors.HeaderParseError): policy.fold("Subject", subject) # XXX: Need subclassing tests. # For adding subclassed objects, make sure the usual rules apply (subclass # wins), but that the order still works (right overrides left). class TestException(Exception): pass class TestPolicyPropagation(unittest.TestCase): # The abstract methods are used by the parser but not by the wrapper # functions that call it, so if the exception gets raised we know that the # policy was actually propagated all the way to feedparser. class MyPolicy(email.policy.Policy): def badmethod(self, *args, **kw): raise TestException("test") fold = fold_binary = header_fetch_parser = badmethod header_source_parse = header_store_parse = badmethod def test_message_from_string(self): with self.assertRaisesRegex(TestException, "^test$"): email.message_from_string("Subject: test\n\n", policy=self.MyPolicy) def test_message_from_bytes(self): with self.assertRaisesRegex(TestException, "^test$"): email.message_from_bytes(b"Subject: test\n\n", policy=self.MyPolicy) def test_message_from_file(self): f = io.StringIO('Subject: test\n\n') with self.assertRaisesRegex(TestException, "^test$"): email.message_from_file(f, policy=self.MyPolicy) def test_message_from_binary_file(self): f = io.BytesIO(b'Subject: test\n\n') with self.assertRaisesRegex(TestException, "^test$"): email.message_from_binary_file(f, policy=self.MyPolicy) # These are redundant, but we need them for black-box completeness. def test_parser(self): p = email.parser.Parser(policy=self.MyPolicy) with self.assertRaisesRegex(TestException, "^test$"): p.parsestr('Subject: test\n\n') def test_bytes_parser(self): p = email.parser.BytesParser(policy=self.MyPolicy) with self.assertRaisesRegex(TestException, "^test$"): p.parsebytes(b'Subject: test\n\n') # Now that we've established that all the parse methods get the # policy in to feedparser, we can use message_from_string for # the rest of the propagation tests. def _make_msg(self, source='Subject: test\n\n', policy=None): self.policy = email.policy.default.clone() if policy is None else policy return email.message_from_string(source, policy=self.policy) def test_parser_propagates_policy_to_message(self): msg = self._make_msg() self.assertIs(msg.policy, self.policy) def test_parser_propagates_policy_to_sub_messages(self): msg = self._make_msg(textwrap.dedent("""\ Subject: mime test MIME-Version: 1.0 Content-Type: multipart/mixed, boundary="XXX" --XXX Content-Type: text/plain test --XXX Content-Type: text/plain test2 --XXX-- """)) for part in msg.walk(): self.assertIs(part.policy, self.policy) def test_message_policy_propagates_to_generator(self): msg = self._make_msg("Subject: test\nTo: foo\n\n", policy=email.policy.default.clone(linesep='X')) s = io.StringIO() g = email.generator.Generator(s) g.flatten(msg) self.assertEqual(s.getvalue(), "Subject: testXTo: fooXX") def test_message_policy_used_by_as_string(self): msg = self._make_msg("Subject: test\nTo: foo\n\n", policy=email.policy.default.clone(linesep='X')) self.assertEqual(msg.as_string(), "Subject: testXTo: fooXX") class TestConcretePolicies(unittest.TestCase): def test_header_store_parse_rejects_newlines(self): instance = email.policy.EmailPolicy() self.assertRaises(ValueError, instance.header_store_parse, 'From', 'spam\negg@foo.py') if __name__ == '__main__': unittest.main()