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""" |
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webencodings.tests |
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~~~~~~~~~~~~~~~~~~ |
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A basic test suite for Encoding. |
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:copyright: Copyright 2012 by Simon Sapin |
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:license: BSD, see LICENSE for details. |
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""" |
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from __future__ import unicode_literals |
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from . import (lookup, LABELS, decode, encode, iter_decode, iter_encode, |
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IncrementalDecoder, IncrementalEncoder, UTF8) |
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def assert_raises(exception, function, *args, **kwargs): |
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try: |
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function(*args, **kwargs) |
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except exception: |
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return |
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else: |
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raise AssertionError('Did not raise %s.' % exception) |
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def test_labels(): |
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assert lookup('utf-8').name == 'utf-8' |
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assert lookup('Utf-8').name == 'utf-8' |
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assert lookup('UTF-8').name == 'utf-8' |
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assert lookup('utf8').name == 'utf-8' |
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assert lookup('utf8').name == 'utf-8' |
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assert lookup('utf8 ').name == 'utf-8' |
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assert lookup(' \r\nutf8\t').name == 'utf-8' |
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assert lookup('u8') is None |
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assert lookup('utf-8 ') is None |
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assert lookup('US-ASCII').name == 'windows-1252' |
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assert lookup('iso-8859-1').name == 'windows-1252' |
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assert lookup('latin1').name == 'windows-1252' |
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assert lookup('LATIN1').name == 'windows-1252' |
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assert lookup('latin-1') is None |
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assert lookup('LATİN1') is None |
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def test_all_labels(): |
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for label in LABELS: |
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assert decode(b'', label) == ('', lookup(label)) |
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assert encode('', label) == b'' |
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for repeat in [0, 1, 12]: |
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output, _ = iter_decode([b''] * repeat, label) |
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assert list(output) == [] |
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assert list(iter_encode([''] * repeat, label)) == [] |
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decoder = IncrementalDecoder(label) |
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assert decoder.decode(b'') == '' |
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assert decoder.decode(b'', final=True) == '' |
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encoder = IncrementalEncoder(label) |
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assert encoder.encode('') == b'' |
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assert encoder.encode('', final=True) == b'' |
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for name in set(LABELS.values()): |
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assert lookup(name).name == name |
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def test_invalid_label(): |
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assert_raises(LookupError, decode, b'\xEF\xBB\xBF\xc3\xa9', 'invalid') |
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assert_raises(LookupError, encode, 'é', 'invalid') |
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assert_raises(LookupError, iter_decode, [], 'invalid') |
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assert_raises(LookupError, iter_encode, [], 'invalid') |
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assert_raises(LookupError, IncrementalDecoder, 'invalid') |
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assert_raises(LookupError, IncrementalEncoder, 'invalid') |
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def test_decode(): |
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assert decode(b'\x80', 'latin1') == ('€', lookup('latin1')) |
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assert decode(b'\x80', lookup('latin1')) == ('€', lookup('latin1')) |
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assert decode(b'\xc3\xa9', 'utf8') == ('é', lookup('utf8')) |
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assert decode(b'\xc3\xa9', UTF8) == ('é', lookup('utf8')) |
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assert decode(b'\xc3\xa9', 'ascii') == ('é', lookup('ascii')) |
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assert decode(b'\xEF\xBB\xBF\xc3\xa9', 'ascii') == ('é', lookup('utf8')) |
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assert decode(b'\xFE\xFF\x00\xe9', 'ascii') == ('é', lookup('utf-16be')) |
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assert decode(b'\xFF\xFE\xe9\x00', 'ascii') == ('é', lookup('utf-16le')) |
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assert decode(b'\xFE\xFF\xe9\x00', 'ascii') == ('\ue900', lookup('utf-16be')) |
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assert decode(b'\xFF\xFE\x00\xe9', 'ascii') == ('\ue900', lookup('utf-16le')) |
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assert decode(b'\x00\xe9', 'UTF-16BE') == ('é', lookup('utf-16be')) |
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assert decode(b'\xe9\x00', 'UTF-16LE') == ('é', lookup('utf-16le')) |
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assert decode(b'\xe9\x00', 'UTF-16') == ('é', lookup('utf-16le')) |
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assert decode(b'\xe9\x00', 'UTF-16BE') == ('\ue900', lookup('utf-16be')) |
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assert decode(b'\x00\xe9', 'UTF-16LE') == ('\ue900', lookup('utf-16le')) |
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assert decode(b'\x00\xe9', 'UTF-16') == ('\ue900', lookup('utf-16le')) |
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def test_encode(): |
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assert encode('é', 'latin1') == b'\xe9' |
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assert encode('é', 'utf8') == b'\xc3\xa9' |
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assert encode('é', 'utf8') == b'\xc3\xa9' |
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assert encode('é', 'utf-16') == b'\xe9\x00' |
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assert encode('é', 'utf-16le') == b'\xe9\x00' |
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assert encode('é', 'utf-16be') == b'\x00\xe9' |
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def test_iter_decode(): |
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def iter_decode_to_string(input, fallback_encoding): |
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output, _encoding = iter_decode(input, fallback_encoding) |
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return ''.join(output) |
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assert iter_decode_to_string([], 'latin1') == '' |
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assert iter_decode_to_string([b''], 'latin1') == '' |
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assert iter_decode_to_string([b'\xe9'], 'latin1') == 'é' |
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assert iter_decode_to_string([b'hello'], 'latin1') == 'hello' |
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assert iter_decode_to_string([b'he', b'llo'], 'latin1') == 'hello' |
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assert iter_decode_to_string([b'hell', b'o'], 'latin1') == 'hello' |
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assert iter_decode_to_string([b'\xc3\xa9'], 'latin1') == 'é' |
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assert iter_decode_to_string([b'\xEF\xBB\xBF\xc3\xa9'], 'latin1') == 'é' |
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assert iter_decode_to_string([ |
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b'\xEF\xBB\xBF', b'\xc3', b'\xa9'], 'latin1') == 'é' |
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assert iter_decode_to_string([ |
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b'\xEF\xBB\xBF', b'a', b'\xc3'], 'latin1') == 'a\uFFFD' |
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assert iter_decode_to_string([ |
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b'', b'\xEF', b'', b'', b'\xBB\xBF\xc3', b'\xa9'], 'latin1') == 'é' |
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assert iter_decode_to_string([b'\xEF\xBB\xBF'], 'latin1') == '' |
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assert iter_decode_to_string([b'\xEF\xBB'], 'latin1') == 'ï»' |
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assert iter_decode_to_string([b'\xFE\xFF\x00\xe9'], 'latin1') == 'é' |
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assert iter_decode_to_string([b'\xFF\xFE\xe9\x00'], 'latin1') == 'é' |
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assert iter_decode_to_string([ |
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b'', b'\xFF', b'', b'', b'\xFE\xe9', b'\x00'], 'latin1') == 'é' |
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assert iter_decode_to_string([ |
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b'', b'h\xe9', b'llo'], 'x-user-defined') == 'h\uF7E9llo' |
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def test_iter_encode(): |
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assert b''.join(iter_encode([], 'latin1')) == b'' |
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assert b''.join(iter_encode([''], 'latin1')) == b'' |
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assert b''.join(iter_encode(['é'], 'latin1')) == b'\xe9' |
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assert b''.join(iter_encode(['', 'é', '', ''], 'latin1')) == b'\xe9' |
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assert b''.join(iter_encode(['', 'é', '', ''], 'utf-16')) == b'\xe9\x00' |
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assert b''.join(iter_encode(['', 'é', '', ''], 'utf-16le')) == b'\xe9\x00' |
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assert b''.join(iter_encode(['', 'é', '', ''], 'utf-16be')) == b'\x00\xe9' |
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assert b''.join(iter_encode([ |
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'', 'h\uF7E9', '', 'llo'], 'x-user-defined')) == b'h\xe9llo' |
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def test_x_user_defined(): |
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encoded = b'2,\x0c\x0b\x1aO\xd9#\xcb\x0f\xc9\xbbt\xcf\xa8\xca' |
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decoded = '2,\x0c\x0b\x1aO\uf7d9#\uf7cb\x0f\uf7c9\uf7bbt\uf7cf\uf7a8\uf7ca' |
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encoded = b'aa' |
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decoded = 'aa' |
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assert decode(encoded, 'x-user-defined') == (decoded, lookup('x-user-defined')) |
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assert encode(decoded, 'x-user-defined') == encoded |
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