mirror of https://github.com/python/cpython
385 lines
14 KiB
Python
385 lines
14 KiB
Python
#
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# multibytecodec_support.py
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# Common Unittest Routines for CJK codecs
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#
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import codecs
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import os
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import re
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import sys
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import unittest
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from http.client import HTTPException
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from test import support
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from io import BytesIO
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class TestBase:
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encoding = '' # codec name
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codec = None # codec tuple (with 4 elements)
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tstring = None # must set. 2 strings to test StreamReader
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codectests = None # must set. codec test tuple
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roundtriptest = 1 # set if roundtrip is possible with unicode
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has_iso10646 = 0 # set if this encoding contains whole iso10646 map
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xmlcharnametest = None # string to test xmlcharrefreplace
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unmappedunicode = '\udeee' # a unicode code point that is not mapped.
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def setUp(self):
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if self.codec is None:
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self.codec = codecs.lookup(self.encoding)
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self.encode = self.codec.encode
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self.decode = self.codec.decode
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self.reader = self.codec.streamreader
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self.writer = self.codec.streamwriter
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self.incrementalencoder = self.codec.incrementalencoder
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self.incrementaldecoder = self.codec.incrementaldecoder
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def test_chunkcoding(self):
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tstring_lines = []
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for b in self.tstring:
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lines = b.split(b"\n")
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last = lines.pop()
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assert last == b""
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lines = [line + b"\n" for line in lines]
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tstring_lines.append(lines)
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for native, utf8 in zip(*tstring_lines):
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u = self.decode(native)[0]
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self.assertEqual(u, utf8.decode('utf-8'))
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if self.roundtriptest:
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self.assertEqual(native, self.encode(u)[0])
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def test_errorhandle(self):
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for source, scheme, expected in self.codectests:
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if isinstance(source, bytes):
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func = self.decode
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else:
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func = self.encode
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if expected:
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result = func(source, scheme)[0]
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if func is self.decode:
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self.assertTrue(type(result) is str, type(result))
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self.assertEqual(result, expected,
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'%a.decode(%r, %r)=%a != %a'
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% (source, self.encoding, scheme, result,
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expected))
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else:
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self.assertTrue(type(result) is bytes, type(result))
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self.assertEqual(result, expected,
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'%a.encode(%r, %r)=%a != %a'
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% (source, self.encoding, scheme, result,
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expected))
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else:
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self.assertRaises(UnicodeError, func, source, scheme)
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def test_xmlcharrefreplace(self):
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if self.has_iso10646:
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self.skipTest('encoding contains full ISO 10646 map')
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s = "\u0b13\u0b23\u0b60 nd eggs"
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self.assertEqual(
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self.encode(s, "xmlcharrefreplace")[0],
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b"ଓଣୠ nd eggs"
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)
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def test_customreplace_encode(self):
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if self.has_iso10646:
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self.skipTest('encoding contains full ISO 10646 map')
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from html.entities import codepoint2name
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def xmlcharnamereplace(exc):
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if not isinstance(exc, UnicodeEncodeError):
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raise TypeError("don't know how to handle %r" % exc)
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l = []
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for c in exc.object[exc.start:exc.end]:
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if ord(c) in codepoint2name:
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l.append("&%s;" % codepoint2name[ord(c)])
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else:
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l.append("&#%d;" % ord(c))
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return ("".join(l), exc.end)
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codecs.register_error("test.xmlcharnamereplace", xmlcharnamereplace)
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if self.xmlcharnametest:
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sin, sout = self.xmlcharnametest
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else:
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sin = "\xab\u211c\xbb = \u2329\u1234\u232a"
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sout = b"«ℜ» = ⟨ሴ⟩"
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self.assertEqual(self.encode(sin,
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"test.xmlcharnamereplace")[0], sout)
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def test_callback_returns_bytes(self):
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def myreplace(exc):
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return (b"1234", exc.end)
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codecs.register_error("test.cjktest", myreplace)
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enc = self.encode("abc" + self.unmappedunicode + "def", "test.cjktest")[0]
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self.assertEqual(enc, b"abc1234def")
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def test_callback_wrong_objects(self):
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def myreplace(exc):
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return (ret, exc.end)
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codecs.register_error("test.cjktest", myreplace)
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for ret in ([1, 2, 3], [], None, object()):
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self.assertRaises(TypeError, self.encode, self.unmappedunicode,
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'test.cjktest')
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def test_callback_long_index(self):
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def myreplace(exc):
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return ('x', int(exc.end))
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codecs.register_error("test.cjktest", myreplace)
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self.assertEqual(self.encode('abcd' + self.unmappedunicode + 'efgh',
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'test.cjktest'), (b'abcdxefgh', 9))
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def myreplace(exc):
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return ('x', sys.maxsize + 1)
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codecs.register_error("test.cjktest", myreplace)
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self.assertRaises(IndexError, self.encode, self.unmappedunicode,
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'test.cjktest')
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def test_callback_None_index(self):
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def myreplace(exc):
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return ('x', None)
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codecs.register_error("test.cjktest", myreplace)
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self.assertRaises(TypeError, self.encode, self.unmappedunicode,
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'test.cjktest')
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def test_callback_backward_index(self):
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def myreplace(exc):
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if myreplace.limit > 0:
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myreplace.limit -= 1
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return ('REPLACED', 0)
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else:
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return ('TERMINAL', exc.end)
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myreplace.limit = 3
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codecs.register_error("test.cjktest", myreplace)
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self.assertEqual(self.encode('abcd' + self.unmappedunicode + 'efgh',
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'test.cjktest'),
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(b'abcdREPLACEDabcdREPLACEDabcdREPLACEDabcdTERMINALefgh', 9))
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def test_callback_forward_index(self):
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def myreplace(exc):
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return ('REPLACED', exc.end + 2)
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codecs.register_error("test.cjktest", myreplace)
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self.assertEqual(self.encode('abcd' + self.unmappedunicode + 'efgh',
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'test.cjktest'), (b'abcdREPLACEDgh', 9))
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def test_callback_index_outofbound(self):
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def myreplace(exc):
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return ('TERM', 100)
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codecs.register_error("test.cjktest", myreplace)
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self.assertRaises(IndexError, self.encode, self.unmappedunicode,
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'test.cjktest')
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def test_incrementalencoder(self):
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UTF8Reader = codecs.getreader('utf-8')
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for sizehint in [None] + list(range(1, 33)) + \
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[64, 128, 256, 512, 1024]:
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istream = UTF8Reader(BytesIO(self.tstring[1]))
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ostream = BytesIO()
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encoder = self.incrementalencoder()
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while 1:
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if sizehint is not None:
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data = istream.read(sizehint)
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else:
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data = istream.read()
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if not data:
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break
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e = encoder.encode(data)
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ostream.write(e)
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self.assertEqual(ostream.getvalue(), self.tstring[0])
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def test_incrementaldecoder(self):
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UTF8Writer = codecs.getwriter('utf-8')
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for sizehint in [None, -1] + list(range(1, 33)) + \
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[64, 128, 256, 512, 1024]:
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istream = BytesIO(self.tstring[0])
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ostream = UTF8Writer(BytesIO())
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decoder = self.incrementaldecoder()
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while 1:
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data = istream.read(sizehint)
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if not data:
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break
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else:
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u = decoder.decode(data)
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ostream.write(u)
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self.assertEqual(ostream.getvalue(), self.tstring[1])
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def test_incrementalencoder_error_callback(self):
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inv = self.unmappedunicode
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e = self.incrementalencoder()
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self.assertRaises(UnicodeEncodeError, e.encode, inv, True)
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e.errors = 'ignore'
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self.assertEqual(e.encode(inv, True), b'')
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e.reset()
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def tempreplace(exc):
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return ('called', exc.end)
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codecs.register_error('test.incremental_error_callback', tempreplace)
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e.errors = 'test.incremental_error_callback'
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self.assertEqual(e.encode(inv, True), b'called')
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# again
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e.errors = 'ignore'
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self.assertEqual(e.encode(inv, True), b'')
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def test_streamreader(self):
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UTF8Writer = codecs.getwriter('utf-8')
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for name in ["read", "readline", "readlines"]:
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for sizehint in [None, -1] + list(range(1, 33)) + \
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[64, 128, 256, 512, 1024]:
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istream = self.reader(BytesIO(self.tstring[0]))
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ostream = UTF8Writer(BytesIO())
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func = getattr(istream, name)
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while 1:
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data = func(sizehint)
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if not data:
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break
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if name == "readlines":
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ostream.writelines(data)
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else:
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ostream.write(data)
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self.assertEqual(ostream.getvalue(), self.tstring[1])
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def test_streamwriter(self):
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readfuncs = ('read', 'readline', 'readlines')
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UTF8Reader = codecs.getreader('utf-8')
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for name in readfuncs:
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for sizehint in [None] + list(range(1, 33)) + \
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[64, 128, 256, 512, 1024]:
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istream = UTF8Reader(BytesIO(self.tstring[1]))
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ostream = self.writer(BytesIO())
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func = getattr(istream, name)
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while 1:
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if sizehint is not None:
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data = func(sizehint)
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else:
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data = func()
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if not data:
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break
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if name == "readlines":
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ostream.writelines(data)
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else:
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ostream.write(data)
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self.assertEqual(ostream.getvalue(), self.tstring[0])
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def test_streamwriter_reset_no_pending(self):
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# Issue #23247: Calling reset() on a fresh StreamWriter instance
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# (without pending data) must not crash
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stream = BytesIO()
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writer = self.writer(stream)
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writer.reset()
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class TestBase_Mapping(unittest.TestCase):
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pass_enctest = []
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pass_dectest = []
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supmaps = []
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codectests = []
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def setUp(self):
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try:
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self.open_mapping_file().close() # test it to report the error early
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except (OSError, HTTPException):
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self.skipTest("Could not retrieve "+self.mapfileurl)
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def open_mapping_file(self):
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return support.open_urlresource(self.mapfileurl)
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def test_mapping_file(self):
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if self.mapfileurl.endswith('.xml'):
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self._test_mapping_file_ucm()
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else:
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self._test_mapping_file_plain()
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def _test_mapping_file_plain(self):
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unichrs = lambda s: ''.join(map(chr, map(eval, s.split('+'))))
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urt_wa = {}
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with self.open_mapping_file() as f:
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for line in f:
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if not line:
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break
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data = line.split('#')[0].strip().split()
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if len(data) != 2:
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continue
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csetval = eval(data[0])
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if csetval <= 0x7F:
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csetch = bytes([csetval & 0xff])
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elif csetval >= 0x1000000:
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csetch = bytes([(csetval >> 24), ((csetval >> 16) & 0xff),
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((csetval >> 8) & 0xff), (csetval & 0xff)])
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elif csetval >= 0x10000:
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csetch = bytes([(csetval >> 16), ((csetval >> 8) & 0xff),
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(csetval & 0xff)])
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elif csetval >= 0x100:
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csetch = bytes([(csetval >> 8), (csetval & 0xff)])
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else:
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continue
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unich = unichrs(data[1])
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if ord(unich) == 0xfffd or unich in urt_wa:
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continue
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urt_wa[unich] = csetch
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self._testpoint(csetch, unich)
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def _test_mapping_file_ucm(self):
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with self.open_mapping_file() as f:
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ucmdata = f.read()
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uc = re.findall('<a u="([A-F0-9]{4})" b="([0-9A-F ]+)"/>', ucmdata)
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for uni, coded in uc:
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unich = chr(int(uni, 16))
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codech = bytes(int(c, 16) for c in coded.split())
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self._testpoint(codech, unich)
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def test_mapping_supplemental(self):
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for mapping in self.supmaps:
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self._testpoint(*mapping)
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def _testpoint(self, csetch, unich):
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if (csetch, unich) not in self.pass_enctest:
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self.assertEqual(unich.encode(self.encoding), csetch)
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if (csetch, unich) not in self.pass_dectest:
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self.assertEqual(str(csetch, self.encoding), unich)
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def test_errorhandle(self):
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for source, scheme, expected in self.codectests:
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if isinstance(source, bytes):
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func = source.decode
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else:
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func = source.encode
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if expected:
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if isinstance(source, bytes):
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result = func(self.encoding, scheme)
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self.assertTrue(type(result) is str, type(result))
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self.assertEqual(result, expected,
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'%a.decode(%r, %r)=%a != %a'
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% (source, self.encoding, scheme, result,
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expected))
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else:
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result = func(self.encoding, scheme)
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self.assertTrue(type(result) is bytes, type(result))
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self.assertEqual(result, expected,
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'%a.encode(%r, %r)=%a != %a'
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% (source, self.encoding, scheme, result,
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expected))
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else:
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self.assertRaises(UnicodeError, func, self.encoding, scheme)
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def load_teststring(name):
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dir = os.path.join(os.path.dirname(__file__), 'cjkencodings')
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with open(os.path.join(dir, name + '.txt'), 'rb') as f:
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encoded = f.read()
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with open(os.path.join(dir, name + '-utf8.txt'), 'rb') as f:
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utf8 = f.read()
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return encoded, utf8
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