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test_idna_uts46.py
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"""Tests for TR46 code.""" import os.path import re import unittest import idna _RE_UNICODE = re.compile("\\\\u([0-9a-fA-F]{4})") _RE_SURROGATE = re.compile("[\ud800-\udbff][\udc00-\udfff]") _SKIP_TESTS = [ # These are strings that are illegal in IDNA 2008. Older versions of the UTS-46 test suite # had these denoted with the 'NV8' marker but this has been removed, so we need to manually # review exceptions and add them here to skip them as text vectors if they are invalid. "\U000102f7\u3002\u200d", "\U0001d7f5\u9681\u2bee\uff0e\u180d\u200c", "9\u9681\u2bee.\u180d\u200c", "\u00df\u200c\uaaf6\u18a5.\u22b6\u2d21\u2d16", "ss\u200c\uaaf6\u18a5.\u22b6\u2d21\u2d16", "\u00df\u200c\uaaf6\u18a5\uff0e\u22b6\u2d21\u2d16", "ss\u200c\uaaf6\u18a5\uff0e\u22b6\u2d21\u2d16", "\U00010a57\u200d\u3002\u2d09\u2d15", "\U00010a57\u200d\uff61\u2d09\u2d15", "\U0001d7cf\U0001da19\u2e16.\u200d", "1\U0001da19\u2e16.\u200d", "\U0001d7e04\U000e01d7\U0001d23b\uff0e\u200d\U000102f5\u26e7\u200d", "84\U000e01d7\U0001d23b.\u200d\U000102f5\u26e7\u200d", "\u00a1", "xn--7a", "\u19da", "xn--pkf", "\u2615", "xn--53h", "\U0001e937.\U00010b90\U0001e881\U00010e60\u0624", "\U0001e937.\U00010b90\U0001e881\U00010e60\u0648\u0654", "\U0001e915.\U00010b90\U0001e881\U00010e60\u0648\u0654", "\U0001e915.\U00010b90\U0001e881\U00010e60\u0624", "xn--ve6h.xn--jgb1694kz0b2176a", "\u00df\u3002\U000102f3\u2d0c\u0fb8", "ss\u3002\U000102f3\u2d0c\u0fb8", "ss.xn--lgd921mvv0m", "ss.\U000102f3\u2d0c\u0fb8", "xn--zca.xn--lgd921mvv0m", "\u00df.\U000102f3\u2d0c\u0fb8", "\u00df\uff61\U000102f3\u2d0c\u0fb8", "ss\uff61\U000102f3\u2d0c\u0fb8", "\u16ad\uff61\U0001d320\u00df\U00016af1", "\u16ad\u3002\U0001d320\u00df\U00016af1", "\u16ad\u3002\U0001d320SS\U00016af1", "\u16ad\u3002\U0001d320ss\U00016af1", "\u16ad\u3002\U0001d320Ss\U00016af1", "xn--hwe.xn--ss-ci1ub261a", "\u16ad.\U0001d320ss\U00016af1", "\u16ad.\U0001d320SS\U00016af1", "\u16ad.\U0001d320Ss\U00016af1", "xn--hwe.xn--zca4946pblnc", "\u16ad.\U0001d320\u00df\U00016af1", "\u16ad\uff61\U0001d320SS\U00016af1", "\u16ad\uff61\U0001d320ss\U00016af1", "\u16ad\uff61\U0001d320Ss\U00016af1", "\u2d1a\U000102f8\U000e0104\u30025\ud7f6\u103a", "xn--ilj2659d.xn--5-dug9054m", "\u2d1a\U000102f8.5\ud7f6\u103a", "\u2d1a\U000102f8\U000e0104\u3002\U0001d7dd\ud7f6\u103a", "xn--9-mfs8024b.", "9\u9681\u2bee.", "xn--ss-4epx629f.xn--ifh802b6a", "ss\uaaf6\u18a5.\u22b6\u2d21\u2d16", "xn--pt9c.xn--0kjya", "\U00010a57.\u2d09\u2d15", "\ua5f7\U00011180.\u075d\U00010a52", "xn--ju8a625r.xn--hpb0073k", "\u03c2.\u0641\u0645\u064a\U0001f79b1.", "\u03a3.\u0641\u0645\u064a\U0001f79b1.", "\u03c3.\u0641\u0645\u064a\U0001f79b1.", "xn--4xa.xn--1-gocmu97674d.", "xn--3xa.xn--1-gocmu97674d.", "xn--1-5bt6845n.", "1\U0001da19\u2e16.", "xn--84-s850a.xn--59h6326e", "84\U0001d23b.\U000102f5\u26e7", "xn--r97c.", "\U000102f7.", # These appear to be errors in the test vectors. All relate to incorrectly applying # bidi rules across label boundaries. Appears independently confirmed # at http://www.alvestrand.no/pipermail/idna-update/2017-January/007946.html "0\u00e0.\u05d0", "0a\u0300.\u05d0", "0A\u0300.\u05d0", "0\u00c0.\u05d0", "xn--0-sfa.xn--4db", "\u00e0\u02c7.\u05d0", "a\u0300\u02c7.\u05d0", "A\u0300\u02c7.\u05d0", "\u00c0\u02c7.\u05d0", "xn--0ca88g.xn--4db", "0A.\u05d0", "0a.\u05d0", "0a.xn--4db", "c.xn--0-eha.xn--4db", "c.0\u00fc.\u05d0", "c.0u\u0308.\u05d0", "C.0U\u0308.\u05d0", "C.0\u00dc.\u05d0", "C.0\u00fc.\u05d0", "C.0\u0075\u0308.\u05d0", "\u06b6\u06df\u3002\u2087\ua806", "\u06b6\u06df\u30027\ua806", "xn--pkb6f.xn--7-x93e", "\u06b6\u06df.7\ua806", "1.\uac7e6.\U00010c41\u06d0", "1.\u1100\u1165\u11b56.\U00010c41\u06d0", "1.xn--6-945e.xn--glb1794k", ] def unicode_fixup(string): """Replace backslash-u-XXXX with appropriate unicode characters.""" return _RE_SURROGATE.sub( lambda match: chr((ord(match.group(0)[0]) - 0xD800) * 0x400 + ord(match.group(0)[1]) - 0xDC00 + 0x10000), _RE_UNICODE.sub(lambda match: chr(int(match.group(1), 16)), string), ) def parse_idna_test_table(inputstream): """Parse IdnaTestV2.txt and return a list of tuples.""" for lineno, line in enumerate(inputstream): line = line.decode("utf-8").strip() if "#" in line: line = line.split("#", 1)[0] if not line: continue yield ((lineno + 1, tuple(field.strip() for field in line.split(";")))) class TestIdnaTest(unittest.TestCase): """Run one of the IdnaTestV2.txt test lines.""" def __init__(self, lineno=None, fields=None): super().__init__() self.lineno = lineno self.fields = fields def id(self): return "{}.{}".format(super().id(), self.lineno) def shortDescription(self): if not self.fields: return "" return "IdnaTestV2.txt line {}: {}".format(self.lineno, "; ".join(self.fields)) def runTest(self): if not self.fields: return ( source, to_unicode, to_unicode_status, to_ascii, to_ascii_status, to_ascii_t, to_ascii_t_status, ) = self.fields if source in _SKIP_TESTS: return if not to_unicode: to_unicode = source if not to_unicode_status: to_unicode_status = "[]" if not to_ascii: to_ascii = to_unicode if not to_ascii_status: to_ascii_status = to_unicode_status if not to_ascii_t: to_ascii_t = to_ascii if not to_ascii_t_status: to_ascii_t_status = to_ascii_status try: output = idna.decode(source, uts46=True, strict=True) if to_unicode_status != "[]": self.fail("decode() did not emit required error {} for {}".format(to_unicode, repr(source))) self.assertEqual(output, to_unicode, "unexpected decode() output") except (idna.IDNAError, UnicodeError, ValueError) as exc: if str(exc).startswith("Unknown"): raise unittest.SkipTest("Test requires support for a newer" " version of Unicode than this Python supports") if to_unicode_status == "[]": raise try: output = idna.encode(source, uts46=True, strict=True).decode("ascii") if to_ascii_status != "[]": self.fail("encode() did not emit required error {} for {}".format(to_ascii_status, repr(source))) self.assertEqual(output, to_ascii, "unexpected encode() output") except (idna.IDNAError, UnicodeError, ValueError) as exc: if str(exc).startswith("Unknown"): raise unittest.SkipTest("Test requires support for a newer" " version of Unicode than this Python supports") if to_ascii_status == "[]": raise try: output = idna.encode(source, uts46=True, strict=True, transitional=True).decode("ascii") if to_ascii_t_status != "[]": self.fail( "encode(transitional=True) did not emit required error {} for {}".format(to_ascii_t_status, repr(source)) ) self.assertEqual(output, to_ascii_t, "unexpected encode() output") except (idna.IDNAError, UnicodeError, ValueError) as exc: if str(exc).startswith("Unknown"): raise unittest.SkipTest("Test requires support for a newer" " version of Unicode than this Python supports") if to_ascii_t_status == "[]": raise def load_tests(loader, tests, pattern): """Create a suite of all the individual tests.""" suite = unittest.TestSuite() with open(os.path.join(os.path.dirname(__file__), "IdnaTestV2.txt"), "rb") as tests_file: suite.addTests(TestIdnaTest(lineno, fields) for lineno, fields in parse_idna_test_table(tests_file)) return suite