| # |
| # multibytecodec_support.py |
| # Common Unittest Routines for CJK codecs |
| # |
| |
| import codecs |
| import os |
| import re |
| import sys |
| import unittest |
| from http.client import HTTPException |
| from test import support |
| from io import BytesIO |
| |
| class TestBase: |
| encoding = '' # codec name |
| codec = None # codec tuple (with 4 elements) |
| tstring = None # must set. 2 strings to test StreamReader |
| |
| codectests = None # must set. codec test tuple |
| roundtriptest = 1 # set if roundtrip is possible with unicode |
| has_iso10646 = 0 # set if this encoding contains whole iso10646 map |
| xmlcharnametest = None # string to test xmlcharrefreplace |
| unmappedunicode = '\udeee' # a unicode code point that is not mapped. |
| |
| def setUp(self): |
| if self.codec is None: |
| self.codec = codecs.lookup(self.encoding) |
| self.encode = self.codec.encode |
| self.decode = self.codec.decode |
| self.reader = self.codec.streamreader |
| self.writer = self.codec.streamwriter |
| self.incrementalencoder = self.codec.incrementalencoder |
| self.incrementaldecoder = self.codec.incrementaldecoder |
| |
| def test_chunkcoding(self): |
| tstring_lines = [] |
| for b in self.tstring: |
| lines = b.split(b"\n") |
| last = lines.pop() |
| assert last == b"" |
| lines = [line + b"\n" for line in lines] |
| tstring_lines.append(lines) |
| for native, utf8 in zip(*tstring_lines): |
| u = self.decode(native)[0] |
| self.assertEqual(u, utf8.decode('utf-8')) |
| if self.roundtriptest: |
| self.assertEqual(native, self.encode(u)[0]) |
| |
| def test_errorhandle(self): |
| for source, scheme, expected in self.codectests: |
| if isinstance(source, bytes): |
| func = self.decode |
| else: |
| func = self.encode |
| if expected: |
| result = func(source, scheme)[0] |
| if func is self.decode: |
| self.assertTrue(type(result) is str, type(result)) |
| self.assertEqual(result, expected, |
| '%a.decode(%r, %r)=%a != %a' |
| % (source, self.encoding, scheme, result, |
| expected)) |
| else: |
| self.assertTrue(type(result) is bytes, type(result)) |
| self.assertEqual(result, expected, |
| '%a.encode(%r, %r)=%a != %a' |
| % (source, self.encoding, scheme, result, |
| expected)) |
| else: |
| self.assertRaises(UnicodeError, func, source, scheme) |
| |
| def test_xmlcharrefreplace(self): |
| if self.has_iso10646: |
| self.skipTest('encoding contains full ISO 10646 map') |
| |
| s = "\u0b13\u0b23\u0b60 nd eggs" |
| self.assertEqual( |
| self.encode(s, "xmlcharrefreplace")[0], |
| b"ଓଣୠ nd eggs" |
| ) |
| |
| def test_customreplace_encode(self): |
| if self.has_iso10646: |
| self.skipTest('encoding contains full ISO 10646 map') |
| |
| from html.entities import codepoint2name |
| |
| def xmlcharnamereplace(exc): |
| if not isinstance(exc, UnicodeEncodeError): |
| raise TypeError("don't know how to handle %r" % exc) |
| l = [] |
| for c in exc.object[exc.start:exc.end]: |
| if ord(c) in codepoint2name: |
| l.append("&%s;" % codepoint2name[ord(c)]) |
| else: |
| l.append("&#%d;" % ord(c)) |
| return ("".join(l), exc.end) |
| |
| codecs.register_error("test.xmlcharnamereplace", xmlcharnamereplace) |
| |
| if self.xmlcharnametest: |
| sin, sout = self.xmlcharnametest |
| else: |
| sin = "\xab\u211c\xbb = \u2329\u1234\u232a" |
| sout = b"«ℜ» = ⟨ሴ⟩" |
| self.assertEqual(self.encode(sin, |
| "test.xmlcharnamereplace")[0], sout) |
| |
| def test_callback_returns_bytes(self): |
| def myreplace(exc): |
| return (b"1234", exc.end) |
| codecs.register_error("test.cjktest", myreplace) |
| enc = self.encode("abc" + self.unmappedunicode + "def", "test.cjktest")[0] |
| self.assertEqual(enc, b"abc1234def") |
| |
| def test_callback_wrong_objects(self): |
| def myreplace(exc): |
| return (ret, exc.end) |
| codecs.register_error("test.cjktest", myreplace) |
| |
| for ret in ([1, 2, 3], [], None, object()): |
| self.assertRaises(TypeError, self.encode, self.unmappedunicode, |
| 'test.cjktest') |
| |
| def test_callback_long_index(self): |
| def myreplace(exc): |
| return ('x', int(exc.end)) |
| codecs.register_error("test.cjktest", myreplace) |
| self.assertEqual(self.encode('abcd' + self.unmappedunicode + 'efgh', |
| 'test.cjktest'), (b'abcdxefgh', 9)) |
| |
| def myreplace(exc): |
| return ('x', sys.maxsize + 1) |
| codecs.register_error("test.cjktest", myreplace) |
| self.assertRaises(IndexError, self.encode, self.unmappedunicode, |
| 'test.cjktest') |
| |
| def test_callback_None_index(self): |
| def myreplace(exc): |
| return ('x', None) |
| codecs.register_error("test.cjktest", myreplace) |
| self.assertRaises(TypeError, self.encode, self.unmappedunicode, |
| 'test.cjktest') |
| |
| def test_callback_backward_index(self): |
| def myreplace(exc): |
| if myreplace.limit > 0: |
| myreplace.limit -= 1 |
| return ('REPLACED', 0) |
| else: |
| return ('TERMINAL', exc.end) |
| myreplace.limit = 3 |
| codecs.register_error("test.cjktest", myreplace) |
| self.assertEqual(self.encode('abcd' + self.unmappedunicode + 'efgh', |
| 'test.cjktest'), |
| (b'abcdREPLACEDabcdREPLACEDabcdREPLACEDabcdTERMINALefgh', 9)) |
| |
| def test_callback_forward_index(self): |
| def myreplace(exc): |
| return ('REPLACED', exc.end + 2) |
| codecs.register_error("test.cjktest", myreplace) |
| self.assertEqual(self.encode('abcd' + self.unmappedunicode + 'efgh', |
| 'test.cjktest'), (b'abcdREPLACEDgh', 9)) |
| |
| def test_callback_index_outofbound(self): |
| def myreplace(exc): |
| return ('TERM', 100) |
| codecs.register_error("test.cjktest", myreplace) |
| self.assertRaises(IndexError, self.encode, self.unmappedunicode, |
| 'test.cjktest') |
| |
| def test_incrementalencoder(self): |
| UTF8Reader = codecs.getreader('utf-8') |
| for sizehint in [None] + list(range(1, 33)) + \ |
| [64, 128, 256, 512, 1024]: |
| istream = UTF8Reader(BytesIO(self.tstring[1])) |
| ostream = BytesIO() |
| encoder = self.incrementalencoder() |
| while 1: |
| if sizehint is not None: |
| data = istream.read(sizehint) |
| else: |
| data = istream.read() |
| |
| if not data: |
| break |
| e = encoder.encode(data) |
| ostream.write(e) |
| |
| self.assertEqual(ostream.getvalue(), self.tstring[0]) |
| |
| def test_incrementaldecoder(self): |
| UTF8Writer = codecs.getwriter('utf-8') |
| for sizehint in [None, -1] + list(range(1, 33)) + \ |
| [64, 128, 256, 512, 1024]: |
| istream = BytesIO(self.tstring[0]) |
| ostream = UTF8Writer(BytesIO()) |
| decoder = self.incrementaldecoder() |
| while 1: |
| data = istream.read(sizehint) |
| if not data: |
| break |
| else: |
| u = decoder.decode(data) |
| ostream.write(u) |
| |
| self.assertEqual(ostream.getvalue(), self.tstring[1]) |
| |
| def test_incrementalencoder_error_callback(self): |
| inv = self.unmappedunicode |
| |
| e = self.incrementalencoder() |
| self.assertRaises(UnicodeEncodeError, e.encode, inv, True) |
| |
| e.errors = 'ignore' |
| self.assertEqual(e.encode(inv, True), b'') |
| |
| e.reset() |
| def tempreplace(exc): |
| return ('called', exc.end) |
| codecs.register_error('test.incremental_error_callback', tempreplace) |
| e.errors = 'test.incremental_error_callback' |
| self.assertEqual(e.encode(inv, True), b'called') |
| |
| # again |
| e.errors = 'ignore' |
| self.assertEqual(e.encode(inv, True), b'') |
| |
| def test_streamreader(self): |
| UTF8Writer = codecs.getwriter('utf-8') |
| for name in ["read", "readline", "readlines"]: |
| for sizehint in [None, -1] + list(range(1, 33)) + \ |
| [64, 128, 256, 512, 1024]: |
| istream = self.reader(BytesIO(self.tstring[0])) |
| ostream = UTF8Writer(BytesIO()) |
| func = getattr(istream, name) |
| while 1: |
| data = func(sizehint) |
| if not data: |
| break |
| if name == "readlines": |
| ostream.writelines(data) |
| else: |
| ostream.write(data) |
| |
| self.assertEqual(ostream.getvalue(), self.tstring[1]) |
| |
| def test_streamwriter(self): |
| readfuncs = ('read', 'readline', 'readlines') |
| UTF8Reader = codecs.getreader('utf-8') |
| for name in readfuncs: |
| for sizehint in [None] + list(range(1, 33)) + \ |
| [64, 128, 256, 512, 1024]: |
| istream = UTF8Reader(BytesIO(self.tstring[1])) |
| ostream = self.writer(BytesIO()) |
| func = getattr(istream, name) |
| while 1: |
| if sizehint is not None: |
| data = func(sizehint) |
| else: |
| data = func() |
| |
| if not data: |
| break |
| if name == "readlines": |
| ostream.writelines(data) |
| else: |
| ostream.write(data) |
| |
| self.assertEqual(ostream.getvalue(), self.tstring[0]) |
| |
| def test_streamwriter_reset_no_pending(self): |
| # Issue #23247: Calling reset() on a fresh StreamWriter instance |
| # (without pending data) must not crash |
| stream = BytesIO() |
| writer = self.writer(stream) |
| writer.reset() |
| |
| def test_incrementalencoder_del_segfault(self): |
| e = self.incrementalencoder() |
| with self.assertRaises(AttributeError): |
| del e.errors |
| |
| |
| class TestBase_Mapping(unittest.TestCase): |
| pass_enctest = [] |
| pass_dectest = [] |
| supmaps = [] |
| codectests = [] |
| |
| def setUp(self): |
| try: |
| self.open_mapping_file().close() # test it to report the error early |
| except (OSError, HTTPException): |
| self.skipTest("Could not retrieve "+self.mapfileurl) |
| |
| def open_mapping_file(self): |
| return support.open_urlresource(self.mapfileurl, encoding="utf-8") |
| |
| def test_mapping_file(self): |
| if self.mapfileurl.endswith('.xml'): |
| self._test_mapping_file_ucm() |
| else: |
| self._test_mapping_file_plain() |
| |
| def _test_mapping_file_plain(self): |
| def unichrs(s): |
| return ''.join(chr(int(x, 16)) for x in s.split('+')) |
| |
| urt_wa = {} |
| |
| with self.open_mapping_file() as f: |
| for line in f: |
| if not line: |
| break |
| data = line.split('#')[0].split() |
| if len(data) != 2: |
| continue |
| |
| if data[0][:2] != '0x': |
| self.fail(f"Invalid line: {line!r}") |
| csetch = bytes.fromhex(data[0][2:]) |
| if len(csetch) == 1 and 0x80 <= csetch[0]: |
| continue |
| |
| unich = unichrs(data[1]) |
| if ord(unich) == 0xfffd or unich in urt_wa: |
| continue |
| urt_wa[unich] = csetch |
| |
| self._testpoint(csetch, unich) |
| |
| def _test_mapping_file_ucm(self): |
| with self.open_mapping_file() as f: |
| ucmdata = f.read() |
| uc = re.findall('<a u="([A-F0-9]{4})" b="([0-9A-F ]+)"/>', ucmdata) |
| for uni, coded in uc: |
| unich = chr(int(uni, 16)) |
| codech = bytes.fromhex(coded) |
| self._testpoint(codech, unich) |
| |
| def test_mapping_supplemental(self): |
| for mapping in self.supmaps: |
| self._testpoint(*mapping) |
| |
| def _testpoint(self, csetch, unich): |
| if (csetch, unich) not in self.pass_enctest: |
| self.assertEqual(unich.encode(self.encoding), csetch) |
| if (csetch, unich) not in self.pass_dectest: |
| self.assertEqual(str(csetch, self.encoding), unich) |
| |
| def test_errorhandle(self): |
| for source, scheme, expected in self.codectests: |
| if isinstance(source, bytes): |
| func = source.decode |
| else: |
| func = source.encode |
| if expected: |
| if isinstance(source, bytes): |
| result = func(self.encoding, scheme) |
| self.assertTrue(type(result) is str, type(result)) |
| self.assertEqual(result, expected, |
| '%a.decode(%r, %r)=%a != %a' |
| % (source, self.encoding, scheme, result, |
| expected)) |
| else: |
| result = func(self.encoding, scheme) |
| self.assertTrue(type(result) is bytes, type(result)) |
| self.assertEqual(result, expected, |
| '%a.encode(%r, %r)=%a != %a' |
| % (source, self.encoding, scheme, result, |
| expected)) |
| else: |
| self.assertRaises(UnicodeError, func, self.encoding, scheme) |
| |
| def load_teststring(name): |
| dir = os.path.join(os.path.dirname(__file__), 'cjkencodings') |
| with open(os.path.join(dir, name + '.txt'), 'rb') as f: |
| encoded = f.read() |
| with open(os.path.join(dir, name + '-utf8.txt'), 'rb') as f: |
| utf8 = f.read() |
| return encoded, utf8 |
