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189 lines
7.4 KiB
Python
189 lines
7.4 KiB
Python
import datetime
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import sys
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import unittest
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from pathlib import Path
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from unittest import mock
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from urllib.parse import quote_plus
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from django.test import SimpleTestCase
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from django.utils.encoding import (
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DjangoUnicodeDecodeError, escape_uri_path, filepath_to_uri, force_bytes,
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force_str, get_system_encoding, iri_to_uri, repercent_broken_unicode,
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smart_bytes, smart_str, uri_to_iri,
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)
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from django.utils.functional import SimpleLazyObject
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from django.utils.translation import gettext_lazy
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class TestEncodingUtils(SimpleTestCase):
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def test_force_str_exception(self):
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"""
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Broken __str__ actually raises an error.
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"""
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class MyString:
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def __str__(self):
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return b'\xc3\xb6\xc3\xa4\xc3\xbc'
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# str(s) raises a TypeError if the result is not a text type.
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with self.assertRaises(TypeError):
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force_str(MyString())
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def test_force_str_lazy(self):
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s = SimpleLazyObject(lambda: 'x')
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self.assertIs(type(force_str(s)), str)
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def test_force_str_DjangoUnicodeDecodeError(self):
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msg = (
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"'utf-8' codec can't decode byte 0xff in position 0: invalid "
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"start byte. You passed in b'\\xff' (<class 'bytes'>)"
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)
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with self.assertRaisesMessage(DjangoUnicodeDecodeError, msg):
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force_str(b'\xff')
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def test_force_bytes_exception(self):
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"""
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force_bytes knows how to convert to bytes an exception
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containing non-ASCII characters in its args.
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"""
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error_msg = "This is an exception, voilà"
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exc = ValueError(error_msg)
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self.assertEqual(force_bytes(exc), error_msg.encode())
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self.assertEqual(force_bytes(exc, encoding='ascii', errors='ignore'), b'This is an exception, voil')
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def test_force_bytes_strings_only(self):
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today = datetime.date.today()
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self.assertEqual(force_bytes(today, strings_only=True), today)
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def test_force_bytes_encoding(self):
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error_msg = 'This is an exception, voilà'.encode()
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result = force_bytes(error_msg, encoding='ascii', errors='ignore')
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self.assertEqual(result, b'This is an exception, voil')
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def test_force_bytes_memory_view(self):
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data = b'abc'
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result = force_bytes(memoryview(data))
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# Type check is needed because memoryview(bytes) == bytes.
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self.assertIs(type(result), bytes)
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self.assertEqual(result, data)
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def test_smart_bytes(self):
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class Test:
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def __str__(self):
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return 'ŠĐĆŽćžšđ'
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lazy_func = gettext_lazy('x')
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self.assertIs(smart_bytes(lazy_func), lazy_func)
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self.assertEqual(smart_bytes(Test()), b'\xc5\xa0\xc4\x90\xc4\x86\xc5\xbd\xc4\x87\xc5\xbe\xc5\xa1\xc4\x91')
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self.assertEqual(smart_bytes(1), b'1')
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self.assertEqual(smart_bytes('foo'), b'foo')
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def test_smart_str(self):
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class Test:
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def __str__(self):
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return 'ŠĐĆŽćžšđ'
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lazy_func = gettext_lazy('x')
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self.assertIs(smart_str(lazy_func), lazy_func)
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self.assertEqual(smart_str(Test()), '\u0160\u0110\u0106\u017d\u0107\u017e\u0161\u0111')
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self.assertEqual(smart_str(1), '1')
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self.assertEqual(smart_str('foo'), 'foo')
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def test_get_default_encoding(self):
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with mock.patch('locale.getdefaultlocale', side_effect=Exception):
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self.assertEqual(get_system_encoding(), 'ascii')
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def test_repercent_broken_unicode_recursion_error(self):
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# Prepare a string long enough to force a recursion error if the tested
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# function uses recursion.
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data = b'\xfc' * sys.getrecursionlimit()
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try:
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self.assertEqual(repercent_broken_unicode(data), b'%FC' * sys.getrecursionlimit())
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except RecursionError:
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self.fail('Unexpected RecursionError raised.')
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class TestRFC3987IEncodingUtils(unittest.TestCase):
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def test_filepath_to_uri(self):
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self.assertIsNone(filepath_to_uri(None))
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self.assertEqual(filepath_to_uri('upload\\чубака.mp4'), 'upload/%D1%87%D1%83%D0%B1%D0%B0%D0%BA%D0%B0.mp4')
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self.assertEqual(filepath_to_uri(Path('upload/test.png')), 'upload/test.png')
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self.assertEqual(filepath_to_uri(Path('upload\\test.png')), 'upload/test.png')
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def test_iri_to_uri(self):
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cases = [
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# Valid UTF-8 sequences are encoded.
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('red%09rosé#red', 'red%09ros%C3%A9#red'),
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('/blog/for/Jürgen Münster/', '/blog/for/J%C3%BCrgen%20M%C3%BCnster/'),
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('locations/%s' % quote_plus('Paris & Orléans'), 'locations/Paris+%26+Orl%C3%A9ans'),
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# Reserved chars remain unescaped.
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('%&', '%&'),
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('red&♥ros%#red', 'red&%E2%99%A5ros%#red'),
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(gettext_lazy('red&♥ros%#red'), 'red&%E2%99%A5ros%#red'),
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]
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for iri, uri in cases:
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with self.subTest(iri):
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self.assertEqual(iri_to_uri(iri), uri)
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# Test idempotency.
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self.assertEqual(iri_to_uri(iri_to_uri(iri)), uri)
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def test_uri_to_iri(self):
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cases = [
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(None, None),
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# Valid UTF-8 sequences are decoded.
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('/%e2%89%Ab%E2%99%a5%E2%89%aB/', '/≫♥≫/'),
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('/%E2%99%A5%E2%99%A5/?utf8=%E2%9C%93', '/♥♥/?utf8=✓'),
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('/%41%5a%6B/', '/AZk/'),
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# Reserved and non-URL valid ASCII chars are not decoded.
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('/%25%20%02%41%7b/', '/%25%20%02A%7b/'),
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# Broken UTF-8 sequences remain escaped.
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('/%AAd%AAj%AAa%AAn%AAg%AAo%AA/', '/%AAd%AAj%AAa%AAn%AAg%AAo%AA/'),
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('/%E2%99%A5%E2%E2%99%A5/', '/♥%E2♥/'),
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('/%E2%99%A5%E2%99%E2%99%A5/', '/♥%E2%99♥/'),
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('/%E2%E2%99%A5%E2%99%A5%99/', '/%E2♥♥%99/'),
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('/%E2%99%A5%E2%99%A5/?utf8=%9C%93%E2%9C%93%9C%93', '/♥♥/?utf8=%9C%93✓%9C%93'),
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]
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for uri, iri in cases:
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with self.subTest(uri):
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self.assertEqual(uri_to_iri(uri), iri)
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# Test idempotency.
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self.assertEqual(uri_to_iri(uri_to_iri(uri)), iri)
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def test_complementarity(self):
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cases = [
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('/blog/for/J%C3%BCrgen%20M%C3%BCnster/', '/blog/for/J\xfcrgen%20M\xfcnster/'),
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('%&', '%&'),
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('red&%E2%99%A5ros%#red', 'red&♥ros%#red'),
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('/%E2%99%A5%E2%99%A5/', '/♥♥/'),
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('/%E2%99%A5%E2%99%A5/?utf8=%E2%9C%93', '/♥♥/?utf8=✓'),
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('/%25%20%02%7b/', '/%25%20%02%7b/'),
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('/%AAd%AAj%AAa%AAn%AAg%AAo%AA/', '/%AAd%AAj%AAa%AAn%AAg%AAo%AA/'),
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('/%E2%99%A5%E2%E2%99%A5/', '/♥%E2♥/'),
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('/%E2%99%A5%E2%99%E2%99%A5/', '/♥%E2%99♥/'),
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('/%E2%E2%99%A5%E2%99%A5%99/', '/%E2♥♥%99/'),
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('/%E2%99%A5%E2%99%A5/?utf8=%9C%93%E2%9C%93%9C%93', '/♥♥/?utf8=%9C%93✓%9C%93'),
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]
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for uri, iri in cases:
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with self.subTest(uri):
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self.assertEqual(iri_to_uri(uri_to_iri(uri)), uri)
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self.assertEqual(uri_to_iri(iri_to_uri(iri)), iri)
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def test_escape_uri_path(self):
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cases = [
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(
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'/;some/=awful/?path/:with/@lots/&of/+awful/chars',
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'/%3Bsome/%3Dawful/%3Fpath/:with/@lots/&of/+awful/chars',
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),
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('/foo#bar', '/foo%23bar'),
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('/foo?bar', '/foo%3Fbar'),
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]
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for uri, expected in cases:
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with self.subTest(uri):
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self.assertEqual(escape_uri_path(uri), expected)
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