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import codecs
import unittest
import precis_i18n.codec
class TestCodec(unittest.TestCase):
def test_encode(self):
self.assertEqual("Juliet".encode("UsernameCasePreserved"), b"Juliet")
self.assertEqual("Juliet".encode("UsernameCaseMapped"), b"juliet")
self.assertEqual(
" pass \u1FBF\u3000".encode("OpaqueString"), b" pass \xe1\xbe\xbf "
)
self.assertEqual(" Juliet ".encode("NicknameCaseMapped"), b"juliet")
self.assertEqual("Juliet".encode("IdentifierClass"), b"Juliet")
self.assertEqual("Juliet".encode("FreeFormClass"), b"Juliet")
self.assertEqual("Juliet".encode("UsernameCaseMapped:ToLower"), b"juliet")
self.assertEqual("Juliet".encode("UsernameCaseMapped_ToLower"), b"juliet")
def test_decode(self):
with self.assertRaises(NotImplementedError):
b"Juliet".decode("UsernameCasePreserved")
def test_encode_errors(self):
# errors must be 'strict'; 'replace' and others are not supported.
with self.assertRaises(ValueError):
"Juliet".encode("opaquestring", errors="replace")
# non-matching codec names shouldn't work.
with self.assertRaises(LookupError) as cm:
"Juliet".encode("opaquestring_nonexistant")
# Exception must be LookupError (not KeyError or IndexError).
self.assertIs(type(cm.exception), LookupError)
def test_search_function(self):
_search = precis_i18n.codec.search
# Check search function result.
codec_info = _search("usernamecasepreserved")
self.assertIsInstance(codec_info, codecs.CodecInfo)
# Search function must return None for non-existant codec.
codec_info = _search("opaquestring_nonexistant")
self.assertIs(codec_info, None)
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