#!/usr/bin/env python

#

# test_multibytecodec.py

#   Unit test for multibytecodec itself

#

from test import test_support

from test import test_multibytecodec_support

from test.test_support import TESTFN

import unittest, StringIO, codecs, sys, os

import _multibytecodec

ALL_CJKENCODINGS = [

# _codecs_cn

    'gb2312', 'gbk', 'gb18030', 'hz',

# _codecs_hk

    'big5hkscs',

# _codecs_jp

    'cp932', 'shift_jis', 'euc_jp', 'euc_jisx0213', 'shift_jisx0213',

    'euc_jis_2004', 'shift_jis_2004',

# _codecs_kr

    'cp949', 'euc_kr', 'johab',

# _codecs_tw

    'big5', 'cp950',

# _codecs_iso2022

    'iso2022_jp', 'iso2022_jp_1', 'iso2022_jp_2', 'iso2022_jp_2004',

    'iso2022_jp_3', 'iso2022_jp_ext', 'iso2022_kr',

]

class Test_MultibyteCodec(unittest.TestCase):

    def test_nullcoding(self):

        for enc in ALL_CJKENCODINGS:

            self.assertEqual(''.decode(enc), u'')

            self.assertEqual(unicode('', enc), u'')

            self.assertEqual(u''.encode(enc), '')

    def test_str_decode(self):

        for enc in ALL_CJKENCODINGS:

            self.assertEqual('abcd'.encode(enc), 'abcd')

    def test_errorcallback_longindex(self):

        dec = codecs.getdecoder('euc-kr')

        myreplace  = lambda exc: (u'', sys.maxint+1)

        codecs.register_error('test.cjktest', myreplace)

        self.assertRaises(IndexError, dec,

                          'apple\x92ham\x93spam', 'test.cjktest')

    def test_codingspec(self):

        try:

            for enc in ALL_CJKENCODINGS:

                print >> open(TESTFN, 'w'), '# coding:', enc

                exec open(TESTFN)

        finally:

            os.unlink(TESTFN)

    def test_init_segfault(self):

        # bug #3305: this used to segfault

        self.assertRaises(AttributeError,

                          _multibytecodec.MultibyteStreamReader, None)

        self.assertRaises(AttributeError,

                          _multibytecodec.MultibyteStreamWriter, None)

class Test_IncrementalEncoder(unittest.TestCase):

    def test_stateless(self):

        # cp949 encoder isn't stateful at all.

        encoder = codecs.getincrementalencoder('cp949')()

        self.assertEqual(encoder.encode(u'\ud30c\uc774\uc36c \ub9c8\uc744'),

                         '\xc6\xc4\xc0\xcc\xbd\xe3 \xb8\xb6\xc0\xbb')

        self.assertEqual(encoder.reset(), None)

        self.assertEqual(encoder.encode(u'\u2606\u223c\u2606', True),

                         '\xa1\xd9\xa1\xad\xa1\xd9')

        self.assertEqual(encoder.reset(), None)

        self.assertEqual(encoder.encode(u'', True), '')

        self.assertEqual(encoder.encode(u'', False), '')

        self.assertEqual(encoder.reset(), None)

    def test_stateful(self):

        # jisx0213 encoder is stateful for a few codepoints. eg)

        #   U+00E6 => A9DC

        #   U+00E6 U+0300 => ABC4

        #   U+0300 => ABDC

        encoder = codecs.getincrementalencoder('jisx0213')()

        self.assertEqual(encoder.encode(u'\u00e6\u0300'), '\xab\xc4')

        self.assertEqual(encoder.encode(u'\u00e6'), '')

        self.assertEqual(encoder.encode(u'\u0300'), '\xab\xc4')

        self.assertEqual(encoder.encode(u'\u00e6', True), '\xa9\xdc')

        self.assertEqual(encoder.reset(), None)

        self.assertEqual(encoder.encode(u'\u0300'), '\xab\xdc')

        self.assertEqual(encoder.encode(u'\u00e6'), '')

        self.assertEqual(encoder.encode('', True), '\xa9\xdc')

        self.assertEqual(encoder.encode('', True), '')

    def test_stateful_keep_buffer(self):

        encoder = codecs.getincrementalencoder('jisx0213')()

        self.assertEqual(encoder.encode(u'\u00e6'), '')

        self.assertRaises(UnicodeEncodeError, encoder.encode, u'\u0123')

        self.assertEqual(encoder.encode(u'\u0300\u00e6'), '\xab\xc4')

        self.assertRaises(UnicodeEncodeError, encoder.encode, u'\u0123')

        self.assertEqual(encoder.reset(), None)

        self.assertEqual(encoder.encode(u'\u0300'), '\xab\xdc')

        self.assertEqual(encoder.encode(u'\u00e6'), '')

        self.assertRaises(UnicodeEncodeError, encoder.encode, u'\u0123')

        self.assertEqual(encoder.encode(u'', True), '\xa9\xdc')

class Test_IncrementalDecoder(unittest.TestCase):

    def test_dbcs(self):

        # cp949 decoder is simple with only 1 or 2 bytes sequences.

        decoder = codecs.getincrementaldecoder('cp949')()

        self.assertEqual(decoder.decode('\xc6\xc4\xc0\xcc\xbd'),

                         u'\ud30c\uc774')

        self.assertEqual(decoder.decode('\xe3 \xb8\xb6\xc0\xbb'),

                         u'\uc36c \ub9c8\uc744')

        self.assertEqual(decoder.decode(''), u'')

    def test_dbcs_keep_buffer(self):

        decoder = codecs.getincrementaldecoder('cp949')()

        self.assertEqual(decoder.decode('\xc6\xc4\xc0'), u'\ud30c')

        self.assertRaises(UnicodeDecodeError, decoder.decode, '', True)

        self.assertEqual(decoder.decode('\xcc'), u'\uc774')

        self.assertEqual(decoder.decode('\xc6\xc4\xc0'), u'\ud30c')

        self.assertRaises(UnicodeDecodeError, decoder.decode, '\xcc\xbd', True)

        self.assertEqual(decoder.decode('\xcc'), u'\uc774')

    def test_iso2022(self):

        decoder = codecs.getincrementaldecoder('iso2022-jp')()

        ESC = '\x1b'

        self.assertEqual(decoder.decode(ESC + '('), u'')

        self.assertEqual(decoder.decode('B', True), u'')

        self.assertEqual(decoder.decode(ESC + '$'), u'')

        self.assertEqual(decoder.decode('B@$'), u'\u4e16')

        self.assertEqual(decoder.decode('@$@'), u'\u4e16')

        self.assertEqual(decoder.decode('$', True), u'\u4e16')

        self.assertEqual(decoder.reset(), None)

        self.assertEqual(decoder.decode('@$'), u'@$')

        self.assertEqual(decoder.decode(ESC + '$'), u'')

        self.assertRaises(UnicodeDecodeError, decoder.decode, '', True)

        self.assertEqual(decoder.decode('B@$'), u'\u4e16')

class Test_StreamReader(unittest.TestCase):

    def test_bug1728403(self):

        try:

            open(TESTFN, 'w').write('\xa1')

            f = codecs.open(TESTFN, encoding='cp949')

            self.assertRaises(UnicodeDecodeError, f.read, 2)

        finally:

            try: f.close()

            except: pass

            os.unlink(TESTFN)

class Test_StreamWriter(unittest.TestCase):

    if len(u'\U00012345') == 2: # UCS2

        def test_gb18030(self):

            s = StringIO.StringIO()

            c = codecs.getwriter('gb18030')(s)

            c.write(u'123')

            self.assertEqual(s.getvalue(), '123')

            c.write(u'\U00012345')

            self.assertEqual(s.getvalue(), '123\x907\x959')

            c.write(u'\U00012345'[0])

            self.assertEqual(s.getvalue(), '123\x907\x959')

            c.write(u'\U00012345'[1] + u'\U00012345' + u'\uac00\u00ac')

            self.assertEqual(s.getvalue(),

                    '123\x907\x959\x907\x959\x907\x959\x827\xcf5\x810\x851')

            c.write(u'\U00012345'[0])

            self.assertEqual(s.getvalue(),

                    '123\x907\x959\x907\x959\x907\x959\x827\xcf5\x810\x851')

            self.assertRaises(UnicodeError, c.reset)

            self.assertEqual(s.getvalue(),

                    '123\x907\x959\x907\x959\x907\x959\x827\xcf5\x810\x851')

        def test_utf_8(self):

            s= StringIO.StringIO()

            c = codecs.getwriter('utf-8')(s)

            c.write(u'123')

            self.assertEqual(s.getvalue(), '123')

            c.write(u'\U00012345')

            self.assertEqual(s.getvalue(), '123\xf0\x92\x8d\x85')

            # Python utf-8 codec can't buffer surrogate pairs yet.

            if 0:

                c.write(u'\U00012345'[0])

                self.assertEqual(s.getvalue(), '123\xf0\x92\x8d\x85')

                c.write(u'\U00012345'[1] + u'\U00012345' + u'\uac00\u00ac')

                self.assertEqual(s.getvalue(),

                    '123\xf0\x92\x8d\x85\xf0\x92\x8d\x85\xf0\x92\x8d\x85'

                    '\xea\xb0\x80\xc2\xac')

                c.write(u'\U00012345'[0])

                self.assertEqual(s.getvalue(),

                    '123\xf0\x92\x8d\x85\xf0\x92\x8d\x85\xf0\x92\x8d\x85'

                    '\xea\xb0\x80\xc2\xac')

                c.reset()

                self.assertEqual(s.getvalue(),

                    '123\xf0\x92\x8d\x85\xf0\x92\x8d\x85\xf0\x92\x8d\x85'

                    '\xea\xb0\x80\xc2\xac\xed\xa0\x88')

                c.write(u'\U00012345'[1])

                self.assertEqual(s.getvalue(),

                    '123\xf0\x92\x8d\x85\xf0\x92\x8d\x85\xf0\x92\x8d\x85'

                    '\xea\xb0\x80\xc2\xac\xed\xa0\x88\xed\xbd\x85')

    else: # UCS4

        pass

    def test_streamwriter_strwrite(self):

        s = StringIO.StringIO()

        wr = codecs.getwriter('gb18030')(s)

        wr.write('abcd')

        self.assertEqual(s.getvalue(), 'abcd')

class Test_ISO2022(unittest.TestCase):

    def test_g2(self):

        iso2022jp2 = '\x1b(B:hu4:unit\x1b.A\x1bNi de famille'

        uni = u':hu4:unit\xe9 de famille'

        self.assertEqual(iso2022jp2.decode('iso2022-jp-2'), uni)

    def test_iso2022_jp_g0(self):

        self.failIf('\x0e' in u'\N{SOFT HYPHEN}'.encode('iso-2022-jp-2'))

        for encoding in ('iso-2022-jp-2004', 'iso-2022-jp-3'):

            e = u'\u3406'.encode(encoding)

            self.failIf(filter(lambda x: x >= '\x80', e))

    def test_bug1572832(self):

        if sys.maxunicode >= 0x10000:

            myunichr = unichr

        else:

            myunichr = lambda x: unichr(0xD7C0+(x>>10)) + unichr(0xDC00+(x&0x3FF))

        for x in xrange(0x10000, 0x110000):

            # Any ISO 2022 codec will cause the segfault

            myunichr(x).encode('iso_2022_jp', 'ignore')

def test_main():

    test_support.run_unittest(__name__)

if __name__ == "__main__":

    test_main()