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Amaury Forgeot d'Arc committed 21fa0ec

Add modifiable copy of test_codecs.py

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Files changed (1)

lib-python/modified-2.7.0/test/test_codecs.py

+from test import test_support
+import unittest
+import codecs
+import sys, StringIO, _testcapi
+
+class Queue(object):
+    """
+    queue: write bytes at one end, read bytes from the other end
+    """
+    def __init__(self):
+        self._buffer = ""
+
+    def write(self, chars):
+        self._buffer += chars
+
+    def read(self, size=-1):
+        if size<0:
+            s = self._buffer
+            self._buffer = ""
+            return s
+        else:
+            s = self._buffer[:size]
+            self._buffer = self._buffer[size:]
+            return s
+
+class ReadTest(unittest.TestCase):
+    def check_partial(self, input, partialresults):
+        # get a StreamReader for the encoding and feed the bytestring version
+        # of input to the reader byte by byte. Read everything available from
+        # the StreamReader and check that the results equal the appropriate
+        # entries from partialresults.
+        q = Queue()
+        r = codecs.getreader(self.encoding)(q)
+        result = u""
+        for (c, partialresult) in zip(input.encode(self.encoding), partialresults):
+            q.write(c)
+            result += r.read()
+            self.assertEqual(result, partialresult)
+        # check that there's nothing left in the buffers
+        self.assertEqual(r.read(), u"")
+        self.assertEqual(r.bytebuffer, "")
+        self.assertEqual(r.charbuffer, u"")
+
+        # do the check again, this time using a incremental decoder
+        d = codecs.getincrementaldecoder(self.encoding)()
+        result = u""
+        for (c, partialresult) in zip(input.encode(self.encoding), partialresults):
+            result += d.decode(c)
+            self.assertEqual(result, partialresult)
+        # check that there's nothing left in the buffers
+        self.assertEqual(d.decode("", True), u"")
+        self.assertEqual(d.buffer, "")
+
+        # Check whether the reset method works properly
+        d.reset()
+        result = u""
+        for (c, partialresult) in zip(input.encode(self.encoding), partialresults):
+            result += d.decode(c)
+            self.assertEqual(result, partialresult)
+        # check that there's nothing left in the buffers
+        self.assertEqual(d.decode("", True), u"")
+        self.assertEqual(d.buffer, "")
+
+        # check iterdecode()
+        encoded = input.encode(self.encoding)
+        self.assertEqual(
+            input,
+            u"".join(codecs.iterdecode(encoded, self.encoding))
+        )
+
+    def test_readline(self):
+        def getreader(input):
+            stream = StringIO.StringIO(input.encode(self.encoding))
+            return codecs.getreader(self.encoding)(stream)
+
+        def readalllines(input, keepends=True, size=None):
+            reader = getreader(input)
+            lines = []
+            while True:
+                line = reader.readline(size=size, keepends=keepends)
+                if not line:
+                    break
+                lines.append(line)
+            return "|".join(lines)
+
+        s = u"foo\nbar\r\nbaz\rspam\u2028eggs"
+        sexpected = u"foo\n|bar\r\n|baz\r|spam\u2028|eggs"
+        sexpectednoends = u"foo|bar|baz|spam|eggs"
+        self.assertEqual(readalllines(s, True), sexpected)
+        self.assertEqual(readalllines(s, False), sexpectednoends)
+        self.assertEqual(readalllines(s, True, 10), sexpected)
+        self.assertEqual(readalllines(s, False, 10), sexpectednoends)
+
+        # Test long lines (multiple calls to read() in readline())
+        vw = []
+        vwo = []
+        for (i, lineend) in enumerate(u"\n \r\n \r \u2028".split()):
+            vw.append((i*200)*u"\3042" + lineend)
+            vwo.append((i*200)*u"\3042")
+        self.assertEqual(readalllines("".join(vw), True), "".join(vw))
+        self.assertEqual(readalllines("".join(vw), False),"".join(vwo))
+
+        # Test lines where the first read might end with \r, so the
+        # reader has to look ahead whether this is a lone \r or a \r\n
+        for size in xrange(80):
+            for lineend in u"\n \r\n \r \u2028".split():
+                s = 10*(size*u"a" + lineend + u"xxx\n")
+                reader = getreader(s)
+                for i in xrange(10):
+                    self.assertEqual(
+                        reader.readline(keepends=True),
+                        size*u"a" + lineend,
+                    )
+                reader = getreader(s)
+                for i in xrange(10):
+                    self.assertEqual(
+                        reader.readline(keepends=False),
+                        size*u"a",
+                    )
+
+    def test_bug1175396(self):
+        s = [
+            '<%!--===================================================\r\n',
+            '    BLOG index page: show recent articles,\r\n',
+            '    today\'s articles, or articles of a specific date.\r\n',
+            '========================================================--%>\r\n',
+            '<%@inputencoding="ISO-8859-1"%>\r\n',
+            '<%@pagetemplate=TEMPLATE.y%>\r\n',
+            '<%@import=import frog.util, frog%>\r\n',
+            '<%@import=import frog.objects%>\r\n',
+            '<%@import=from frog.storageerrors import StorageError%>\r\n',
+            '<%\r\n',
+            '\r\n',
+            'import logging\r\n',
+            'log=logging.getLogger("Snakelets.logger")\r\n',
+            '\r\n',
+            '\r\n',
+            'user=self.SessionCtx.user\r\n',
+            'storageEngine=self.SessionCtx.storageEngine\r\n',
+            '\r\n',
+            '\r\n',
+            'def readArticlesFromDate(date, count=None):\r\n',
+            '    entryids=storageEngine.listBlogEntries(date)\r\n',
+            '    entryids.reverse() # descending\r\n',
+            '    if count:\r\n',
+            '        entryids=entryids[:count]\r\n',
+            '    try:\r\n',
+            '        return [ frog.objects.BlogEntry.load(storageEngine, date, Id) for Id in entryids ]\r\n',
+            '    except StorageError,x:\r\n',
+            '        log.error("Error loading articles: "+str(x))\r\n',
+            '        self.abort("cannot load articles")\r\n',
+            '\r\n',
+            'showdate=None\r\n',
+            '\r\n',
+            'arg=self.Request.getArg()\r\n',
+            'if arg=="today":\r\n',
+            '    #-------------------- TODAY\'S ARTICLES\r\n',
+            '    self.write("<h2>Today\'s articles</h2>")\r\n',
+            '    showdate = frog.util.isodatestr() \r\n',
+            '    entries = readArticlesFromDate(showdate)\r\n',
+            'elif arg=="active":\r\n',
+            '    #-------------------- ACTIVE ARTICLES redirect\r\n',
+            '    self.Yredirect("active.y")\r\n',
+            'elif arg=="login":\r\n',
+            '    #-------------------- LOGIN PAGE redirect\r\n',
+            '    self.Yredirect("login.y")\r\n',
+            'elif arg=="date":\r\n',
+            '    #-------------------- ARTICLES OF A SPECIFIC DATE\r\n',
+            '    showdate = self.Request.getParameter("date")\r\n',
+            '    self.write("<h2>Articles written on %s</h2>"% frog.util.mediumdatestr(showdate))\r\n',
+            '    entries = readArticlesFromDate(showdate)\r\n',
+            'else:\r\n',
+            '    #-------------------- RECENT ARTICLES\r\n',
+            '    self.write("<h2>Recent articles</h2>")\r\n',
+            '    dates=storageEngine.listBlogEntryDates()\r\n',
+            '    if dates:\r\n',
+            '        entries=[]\r\n',
+            '        SHOWAMOUNT=10\r\n',
+            '        for showdate in dates:\r\n',
+            '            entries.extend( readArticlesFromDate(showdate, SHOWAMOUNT-len(entries)) )\r\n',
+            '            if len(entries)>=SHOWAMOUNT:\r\n',
+            '                break\r\n',
+            '                \r\n',
+        ]
+        stream = StringIO.StringIO("".join(s).encode(self.encoding))
+        reader = codecs.getreader(self.encoding)(stream)
+        for (i, line) in enumerate(reader):
+            self.assertEqual(line, s[i])
+
+    def test_readlinequeue(self):
+        q = Queue()
+        writer = codecs.getwriter(self.encoding)(q)
+        reader = codecs.getreader(self.encoding)(q)
+
+        # No lineends
+        writer.write(u"foo\r")
+        self.assertEqual(reader.readline(keepends=False), u"foo")
+        writer.write(u"\nbar\r")
+        self.assertEqual(reader.readline(keepends=False), u"")
+        self.assertEqual(reader.readline(keepends=False), u"bar")
+        writer.write(u"baz")
+        self.assertEqual(reader.readline(keepends=False), u"baz")
+        self.assertEqual(reader.readline(keepends=False), u"")
+
+        # Lineends
+        writer.write(u"foo\r")
+        self.assertEqual(reader.readline(keepends=True), u"foo\r")
+        writer.write(u"\nbar\r")
+        self.assertEqual(reader.readline(keepends=True), u"\n")
+        self.assertEqual(reader.readline(keepends=True), u"bar\r")
+        writer.write(u"baz")
+        self.assertEqual(reader.readline(keepends=True), u"baz")
+        self.assertEqual(reader.readline(keepends=True), u"")
+        writer.write(u"foo\r\n")
+        self.assertEqual(reader.readline(keepends=True), u"foo\r\n")
+
+    def test_bug1098990_a(self):
+        s1 = u"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy\r\n"
+        s2 = u"offending line: ladfj askldfj klasdj fskla dfzaskdj fasklfj laskd fjasklfzzzzaa%whereisthis!!!\r\n"
+        s3 = u"next line.\r\n"
+
+        s = (s1+s2+s3).encode(self.encoding)
+        stream = StringIO.StringIO(s)
+        reader = codecs.getreader(self.encoding)(stream)
+        self.assertEqual(reader.readline(), s1)
+        self.assertEqual(reader.readline(), s2)
+        self.assertEqual(reader.readline(), s3)
+        self.assertEqual(reader.readline(), u"")
+
+    def test_bug1098990_b(self):
+        s1 = u"aaaaaaaaaaaaaaaaaaaaaaaa\r\n"
+        s2 = u"bbbbbbbbbbbbbbbbbbbbbbbb\r\n"
+        s3 = u"stillokay:bbbbxx\r\n"
+        s4 = u"broken!!!!badbad\r\n"
+        s5 = u"againokay.\r\n"
+
+        s = (s1+s2+s3+s4+s5).encode(self.encoding)
+        stream = StringIO.StringIO(s)
+        reader = codecs.getreader(self.encoding)(stream)
+        self.assertEqual(reader.readline(), s1)
+        self.assertEqual(reader.readline(), s2)
+        self.assertEqual(reader.readline(), s3)
+        self.assertEqual(reader.readline(), s4)
+        self.assertEqual(reader.readline(), s5)
+        self.assertEqual(reader.readline(), u"")
+
+class UTF32Test(ReadTest):
+    encoding = "utf-32"
+
+    spamle = ('\xff\xfe\x00\x00'
+              's\x00\x00\x00p\x00\x00\x00a\x00\x00\x00m\x00\x00\x00'
+              's\x00\x00\x00p\x00\x00\x00a\x00\x00\x00m\x00\x00\x00')
+    spambe = ('\x00\x00\xfe\xff'
+              '\x00\x00\x00s\x00\x00\x00p\x00\x00\x00a\x00\x00\x00m'
+              '\x00\x00\x00s\x00\x00\x00p\x00\x00\x00a\x00\x00\x00m')
+
+    def test_only_one_bom(self):
+        _,_,reader,writer = codecs.lookup(self.encoding)
+        # encode some stream
+        s = StringIO.StringIO()
+        f = writer(s)
+        f.write(u"spam")
+        f.write(u"spam")
+        d = s.getvalue()
+        # check whether there is exactly one BOM in it
+        self.assertTrue(d == self.spamle or d == self.spambe)
+        # try to read it back
+        s = StringIO.StringIO(d)
+        f = reader(s)
+        self.assertEquals(f.read(), u"spamspam")
+
+    def test_badbom(self):
+        s = StringIO.StringIO(4*"\xff")
+        f = codecs.getreader(self.encoding)(s)
+        self.assertRaises(UnicodeError, f.read)
+
+        s = StringIO.StringIO(8*"\xff")
+        f = codecs.getreader(self.encoding)(s)
+        self.assertRaises(UnicodeError, f.read)
+
+    def test_partial(self):
+        self.check_partial(
+            u"\x00\xff\u0100\uffff",
+            [
+                u"", # first byte of BOM read
+                u"", # second byte of BOM read
+                u"", # third byte of BOM read
+                u"", # fourth byte of BOM read => byteorder known
+                u"",
+                u"",
+                u"",
+                u"\x00",
+                u"\x00",
+                u"\x00",
+                u"\x00",
+                u"\x00\xff",
+                u"\x00\xff",
+                u"\x00\xff",
+                u"\x00\xff",
+                u"\x00\xff\u0100",
+                u"\x00\xff\u0100",
+                u"\x00\xff\u0100",
+                u"\x00\xff\u0100",
+                u"\x00\xff\u0100\uffff",
+            ]
+        )
+
+    def test_handlers(self):
+        self.assertEqual((u'\ufffd', 1),
+                         codecs.utf_32_decode('\x01', 'replace', True))
+        self.assertEqual((u'', 1),
+                         codecs.utf_32_decode('\x01', 'ignore', True))
+
+    def test_errors(self):
+        self.assertRaises(UnicodeDecodeError, codecs.utf_32_decode,
+                          "\xff", "strict", True)
+
+    def test_issue8941(self):
+        # Issue #8941: insufficient result allocation when decoding into
+        # surrogate pairs on UCS-2 builds.
+        encoded_le = '\xff\xfe\x00\x00' + '\x00\x00\x01\x00' * 1024
+        self.assertEqual(u'\U00010000' * 1024,
+                         codecs.utf_32_decode(encoded_le)[0])
+        encoded_be = '\x00\x00\xfe\xff' + '\x00\x01\x00\x00' * 1024
+        self.assertEqual(u'\U00010000' * 1024,
+                         codecs.utf_32_decode(encoded_be)[0])
+
+class UTF32LETest(ReadTest):
+    encoding = "utf-32-le"
+
+    def test_partial(self):
+        self.check_partial(
+            u"\x00\xff\u0100\uffff",
+            [
+                u"",
+                u"",
+                u"",
+                u"\x00",
+                u"\x00",
+                u"\x00",
+                u"\x00",
+                u"\x00\xff",
+                u"\x00\xff",
+                u"\x00\xff",
+                u"\x00\xff",
+                u"\x00\xff\u0100",
+                u"\x00\xff\u0100",
+                u"\x00\xff\u0100",
+                u"\x00\xff\u0100",
+                u"\x00\xff\u0100\uffff",
+            ]
+        )
+
+    def test_simple(self):
+        self.assertEqual(u"\U00010203".encode(self.encoding), "\x03\x02\x01\x00")
+
+    def test_errors(self):
+        self.assertRaises(UnicodeDecodeError, codecs.utf_32_le_decode,
+                          "\xff", "strict", True)
+
+    def test_issue8941(self):
+        # Issue #8941: insufficient result allocation when decoding into
+        # surrogate pairs on UCS-2 builds.
+        encoded = '\x00\x00\x01\x00' * 1024
+        self.assertEqual(u'\U00010000' * 1024,
+                         codecs.utf_32_le_decode(encoded)[0])
+
+class UTF32BETest(ReadTest):
+    encoding = "utf-32-be"
+
+    def test_partial(self):
+        self.check_partial(
+            u"\x00\xff\u0100\uffff",
+            [
+                u"",
+                u"",
+                u"",
+                u"\x00",
+                u"\x00",
+                u"\x00",
+                u"\x00",
+                u"\x00\xff",
+                u"\x00\xff",
+                u"\x00\xff",
+                u"\x00\xff",
+                u"\x00\xff\u0100",
+                u"\x00\xff\u0100",
+                u"\x00\xff\u0100",
+                u"\x00\xff\u0100",
+                u"\x00\xff\u0100\uffff",
+            ]
+        )
+
+    def test_simple(self):
+        self.assertEqual(u"\U00010203".encode(self.encoding), "\x00\x01\x02\x03")
+
+    def test_errors(self):
+        self.assertRaises(UnicodeDecodeError, codecs.utf_32_be_decode,
+                          "\xff", "strict", True)
+
+    def test_issue8941(self):
+        # Issue #8941: insufficient result allocation when decoding into
+        # surrogate pairs on UCS-2 builds.
+        encoded = '\x00\x01\x00\x00' * 1024
+        self.assertEqual(u'\U00010000' * 1024,
+                         codecs.utf_32_be_decode(encoded)[0])
+
+
+class UTF16Test(ReadTest):
+    encoding = "utf-16"
+
+    spamle = '\xff\xfes\x00p\x00a\x00m\x00s\x00p\x00a\x00m\x00'
+    spambe = '\xfe\xff\x00s\x00p\x00a\x00m\x00s\x00p\x00a\x00m'
+
+    def test_only_one_bom(self):
+        _,_,reader,writer = codecs.lookup(self.encoding)
+        # encode some stream
+        s = StringIO.StringIO()
+        f = writer(s)
+        f.write(u"spam")
+        f.write(u"spam")
+        d = s.getvalue()
+        # check whether there is exactly one BOM in it
+        self.assertTrue(d == self.spamle or d == self.spambe)
+        # try to read it back
+        s = StringIO.StringIO(d)
+        f = reader(s)
+        self.assertEquals(f.read(), u"spamspam")
+
+    def test_badbom(self):
+        s = StringIO.StringIO("\xff\xff")
+        f = codecs.getreader(self.encoding)(s)
+        self.assertRaises(UnicodeError, f.read)
+
+        s = StringIO.StringIO("\xff\xff\xff\xff")
+        f = codecs.getreader(self.encoding)(s)
+        self.assertRaises(UnicodeError, f.read)
+
+    def test_partial(self):
+        self.check_partial(
+            u"\x00\xff\u0100\uffff",
+            [
+                u"", # first byte of BOM read
+                u"", # second byte of BOM read => byteorder known
+                u"",
+                u"\x00",
+                u"\x00",
+                u"\x00\xff",
+                u"\x00\xff",
+                u"\x00\xff\u0100",
+                u"\x00\xff\u0100",
+                u"\x00\xff\u0100\uffff",
+            ]
+        )
+
+    def test_handlers(self):
+        self.assertEqual((u'\ufffd', 1),
+                         codecs.utf_16_decode('\x01', 'replace', True))
+        self.assertEqual((u'', 1),
+                         codecs.utf_16_decode('\x01', 'ignore', True))
+
+    def test_errors(self):
+        self.assertRaises(UnicodeDecodeError, codecs.utf_16_decode, "\xff", "strict", True)
+
+    def test_bug691291(self):
+        # Files are always opened in binary mode, even if no binary mode was
+        # specified.  This means that no automatic conversion of '\n' is done
+        # on reading and writing.
+        s1 = u'Hello\r\nworld\r\n'
+
+        s = s1.encode(self.encoding)
+        try:
+            with open(test_support.TESTFN, 'wb') as fp:
+                fp.write(s)
+            with codecs.open(test_support.TESTFN, 'U', encoding=self.encoding) as reader:
+                self.assertEqual(reader.read(), s1)
+        finally:
+            test_support.unlink(test_support.TESTFN)
+
+class UTF16LETest(ReadTest):
+    encoding = "utf-16-le"
+
+    def test_partial(self):
+        self.check_partial(
+            u"\x00\xff\u0100\uffff",
+            [
+                u"",
+                u"\x00",
+                u"\x00",
+                u"\x00\xff",
+                u"\x00\xff",
+                u"\x00\xff\u0100",
+                u"\x00\xff\u0100",
+                u"\x00\xff\u0100\uffff",
+            ]
+        )
+
+    def test_errors(self):
+        self.assertRaises(UnicodeDecodeError, codecs.utf_16_le_decode, "\xff", "strict", True)
+
+class UTF16BETest(ReadTest):
+    encoding = "utf-16-be"
+
+    def test_partial(self):
+        self.check_partial(
+            u"\x00\xff\u0100\uffff",
+            [
+                u"",
+                u"\x00",
+                u"\x00",
+                u"\x00\xff",
+                u"\x00\xff",
+                u"\x00\xff\u0100",
+                u"\x00\xff\u0100",
+                u"\x00\xff\u0100\uffff",
+            ]
+        )
+
+    def test_errors(self):
+        self.assertRaises(UnicodeDecodeError, codecs.utf_16_be_decode, "\xff", "strict", True)
+
+class UTF8Test(ReadTest):
+    encoding = "utf-8"
+
+    def test_partial(self):
+        self.check_partial(
+            u"\x00\xff\u07ff\u0800\uffff",
+            [
+                u"\x00",
+                u"\x00",
+                u"\x00\xff",
+                u"\x00\xff",
+                u"\x00\xff\u07ff",
+                u"\x00\xff\u07ff",
+                u"\x00\xff\u07ff",
+                u"\x00\xff\u07ff\u0800",
+                u"\x00\xff\u07ff\u0800",
+                u"\x00\xff\u07ff\u0800",
+                u"\x00\xff\u07ff\u0800\uffff",
+            ]
+        )
+
+class UTF7Test(ReadTest):
+    encoding = "utf-7"
+
+    def test_partial(self):
+        self.check_partial(
+            u"a+-b",
+            [
+                u"a",
+                u"a",
+                u"a+",
+                u"a+-",
+                u"a+-b",
+            ]
+        )
+
+class UTF16ExTest(unittest.TestCase):
+
+    def test_errors(self):
+        self.assertRaises(UnicodeDecodeError, codecs.utf_16_ex_decode, "\xff", "strict", 0, True)
+
+    def test_bad_args(self):
+        self.assertRaises(TypeError, codecs.utf_16_ex_decode)
+
+class ReadBufferTest(unittest.TestCase):
+
+    def test_array(self):
+        import array
+        self.assertEqual(
+            codecs.readbuffer_encode(array.array("c", "spam")),
+            ("spam", 4)
+        )
+
+    def test_empty(self):
+        self.assertEqual(codecs.readbuffer_encode(""), ("", 0))
+
+    def test_bad_args(self):
+        self.assertRaises(TypeError, codecs.readbuffer_encode)
+        self.assertRaises(TypeError, codecs.readbuffer_encode, 42)
+
+class CharBufferTest(unittest.TestCase):
+
+    def test_string(self):
+        self.assertEqual(codecs.charbuffer_encode("spam"), ("spam", 4))
+
+    def test_empty(self):
+        self.assertEqual(codecs.charbuffer_encode(""), ("", 0))
+
+    def test_bad_args(self):
+        self.assertRaises(TypeError, codecs.charbuffer_encode)
+        self.assertRaises(TypeError, codecs.charbuffer_encode, 42)
+
+class UTF8SigTest(ReadTest):
+    encoding = "utf-8-sig"
+
+    def test_partial(self):
+        self.check_partial(
+            u"\ufeff\x00\xff\u07ff\u0800\uffff",
+            [
+                u"",
+                u"",
+                u"", # First BOM has been read and skipped
+                u"",
+                u"",
+                u"\ufeff", # Second BOM has been read and emitted
+                u"\ufeff\x00", # "\x00" read and emitted
+                u"\ufeff\x00", # First byte of encoded u"\xff" read
+                u"\ufeff\x00\xff", # Second byte of encoded u"\xff" read
+                u"\ufeff\x00\xff", # First byte of encoded u"\u07ff" read
+                u"\ufeff\x00\xff\u07ff", # Second byte of encoded u"\u07ff" read
+                u"\ufeff\x00\xff\u07ff",
+                u"\ufeff\x00\xff\u07ff",
+                u"\ufeff\x00\xff\u07ff\u0800",
+                u"\ufeff\x00\xff\u07ff\u0800",
+                u"\ufeff\x00\xff\u07ff\u0800",
+                u"\ufeff\x00\xff\u07ff\u0800\uffff",
+            ]
+        )
+
+    def test_bug1601501(self):
+        # SF bug #1601501: check that the codec works with a buffer
+        unicode("\xef\xbb\xbf", "utf-8-sig")
+
+    def test_bom(self):
+        d = codecs.getincrementaldecoder("utf-8-sig")()
+        s = u"spam"
+        self.assertEqual(d.decode(s.encode("utf-8-sig")), s)
+
+    def test_stream_bom(self):
+        unistring = u"ABC\u00A1\u2200XYZ"
+        bytestring = codecs.BOM_UTF8 + "ABC\xC2\xA1\xE2\x88\x80XYZ"
+
+        reader = codecs.getreader("utf-8-sig")
+        for sizehint in [None] + range(1, 11) + \
+                        [64, 128, 256, 512, 1024]:
+            istream = reader(StringIO.StringIO(bytestring))
+            ostream = StringIO.StringIO()
+            while 1:
+                if sizehint is not None:
+                    data = istream.read(sizehint)
+                else:
+                    data = istream.read()
+
+                if not data:
+                    break
+                ostream.write(data)
+
+            got = ostream.getvalue()
+            self.assertEqual(got, unistring)
+
+    def test_stream_bare(self):
+        unistring = u"ABC\u00A1\u2200XYZ"
+        bytestring = "ABC\xC2\xA1\xE2\x88\x80XYZ"
+
+        reader = codecs.getreader("utf-8-sig")
+        for sizehint in [None] + range(1, 11) + \
+                        [64, 128, 256, 512, 1024]:
+            istream = reader(StringIO.StringIO(bytestring))
+            ostream = StringIO.StringIO()
+            while 1:
+                if sizehint is not None:
+                    data = istream.read(sizehint)
+                else:
+                    data = istream.read()
+
+                if not data:
+                    break
+                ostream.write(data)
+
+            got = ostream.getvalue()
+            self.assertEqual(got, unistring)
+
+class EscapeDecodeTest(unittest.TestCase):
+    def test_empty(self):
+        self.assertEquals(codecs.escape_decode(""), ("", 0))
+
+class RecodingTest(unittest.TestCase):
+    def test_recoding(self):
+        f = StringIO.StringIO()
+        f2 = codecs.EncodedFile(f, "unicode_internal", "utf-8")
+        f2.write(u"a")
+        f2.close()
+        # Python used to crash on this at exit because of a refcount
+        # bug in _codecsmodule.c
+
+# From RFC 3492
+punycode_testcases = [
+    # A Arabic (Egyptian):
+    (u"\u0644\u064A\u0647\u0645\u0627\u0628\u062A\u0643\u0644"
+     u"\u0645\u0648\u0634\u0639\u0631\u0628\u064A\u061F",
+     "egbpdaj6bu4bxfgehfvwxn"),
+    # B Chinese (simplified):
+    (u"\u4ED6\u4EEC\u4E3A\u4EC0\u4E48\u4E0D\u8BF4\u4E2D\u6587",
+     "ihqwcrb4cv8a8dqg056pqjye"),
+    # C Chinese (traditional):
+    (u"\u4ED6\u5011\u7232\u4EC0\u9EBD\u4E0D\u8AAA\u4E2D\u6587",
+     "ihqwctvzc91f659drss3x8bo0yb"),
+    # D Czech: Pro<ccaron>prost<ecaron>nemluv<iacute><ccaron>esky
+    (u"\u0050\u0072\u006F\u010D\u0070\u0072\u006F\u0073\u0074"
+     u"\u011B\u006E\u0065\u006D\u006C\u0075\u0076\u00ED\u010D"
+     u"\u0065\u0073\u006B\u0079",
+     "Proprostnemluvesky-uyb24dma41a"),
+    # E Hebrew:
+    (u"\u05DC\u05DE\u05D4\u05D4\u05DD\u05E4\u05E9\u05D5\u05D8"
+     u"\u05DC\u05D0\u05DE\u05D3\u05D1\u05E8\u05D9\u05DD\u05E2"
+     u"\u05D1\u05E8\u05D9\u05EA",
+     "4dbcagdahymbxekheh6e0a7fei0b"),
+    # F Hindi (Devanagari):
+    (u"\u092F\u0939\u0932\u094B\u0917\u0939\u093F\u0928\u094D"
+    u"\u0926\u0940\u0915\u094D\u092F\u094B\u0902\u0928\u0939"
+    u"\u0940\u0902\u092C\u094B\u0932\u0938\u0915\u0924\u0947"
+    u"\u0939\u0948\u0902",
+    "i1baa7eci9glrd9b2ae1bj0hfcgg6iyaf8o0a1dig0cd"),
+
+    #(G) Japanese (kanji and hiragana):
+    (u"\u306A\u305C\u307F\u3093\u306A\u65E5\u672C\u8A9E\u3092"
+    u"\u8A71\u3057\u3066\u304F\u308C\u306A\u3044\u306E\u304B",
+     "n8jok5ay5dzabd5bym9f0cm5685rrjetr6pdxa"),
+
+    # (H) Korean (Hangul syllables):
+    (u"\uC138\uACC4\uC758\uBAA8\uB4E0\uC0AC\uB78C\uB4E4\uC774"
+     u"\uD55C\uAD6D\uC5B4\uB97C\uC774\uD574\uD55C\uB2E4\uBA74"
+     u"\uC5BC\uB9C8\uB098\uC88B\uC744\uAE4C",
+     "989aomsvi5e83db1d2a355cv1e0vak1dwrv93d5xbh15a0dt30a5j"
+     "psd879ccm6fea98c"),
+
+    # (I) Russian (Cyrillic):
+    (u"\u043F\u043E\u0447\u0435\u043C\u0443\u0436\u0435\u043E"
+     u"\u043D\u0438\u043D\u0435\u0433\u043E\u0432\u043E\u0440"
+     u"\u044F\u0442\u043F\u043E\u0440\u0443\u0441\u0441\u043A"
+     u"\u0438",
+     "b1abfaaepdrnnbgefbaDotcwatmq2g4l"),
+
+    # (J) Spanish: Porqu<eacute>nopuedensimplementehablarenEspa<ntilde>ol
+    (u"\u0050\u006F\u0072\u0071\u0075\u00E9\u006E\u006F\u0070"
+     u"\u0075\u0065\u0064\u0065\u006E\u0073\u0069\u006D\u0070"
+     u"\u006C\u0065\u006D\u0065\u006E\u0074\u0065\u0068\u0061"
+     u"\u0062\u006C\u0061\u0072\u0065\u006E\u0045\u0073\u0070"
+     u"\u0061\u00F1\u006F\u006C",
+     "PorqunopuedensimplementehablarenEspaol-fmd56a"),
+
+    # (K) Vietnamese:
+    #  T<adotbelow>isaoh<odotbelow>kh<ocirc>ngth<ecirchookabove>ch\
+    #   <ihookabove>n<oacute>iti<ecircacute>ngVi<ecircdotbelow>t
+    (u"\u0054\u1EA1\u0069\u0073\u0061\u006F\u0068\u1ECD\u006B"
+     u"\u0068\u00F4\u006E\u0067\u0074\u0068\u1EC3\u0063\u0068"
+     u"\u1EC9\u006E\u00F3\u0069\u0074\u0069\u1EBF\u006E\u0067"
+     u"\u0056\u0069\u1EC7\u0074",
+     "TisaohkhngthchnitingVit-kjcr8268qyxafd2f1b9g"),
+
+    #(L) 3<nen>B<gumi><kinpachi><sensei>
+    (u"\u0033\u5E74\u0042\u7D44\u91D1\u516B\u5148\u751F",
+     "3B-ww4c5e180e575a65lsy2b"),
+
+    # (M) <amuro><namie>-with-SUPER-MONKEYS
+    (u"\u5B89\u5BA4\u5948\u7F8E\u6075\u002D\u0077\u0069\u0074"
+     u"\u0068\u002D\u0053\u0055\u0050\u0045\u0052\u002D\u004D"
+     u"\u004F\u004E\u004B\u0045\u0059\u0053",
+     "-with-SUPER-MONKEYS-pc58ag80a8qai00g7n9n"),
+
+    # (N) Hello-Another-Way-<sorezore><no><basho>
+    (u"\u0048\u0065\u006C\u006C\u006F\u002D\u0041\u006E\u006F"
+     u"\u0074\u0068\u0065\u0072\u002D\u0057\u0061\u0079\u002D"
+     u"\u305D\u308C\u305E\u308C\u306E\u5834\u6240",
+     "Hello-Another-Way--fc4qua05auwb3674vfr0b"),
+
+    # (O) <hitotsu><yane><no><shita>2
+    (u"\u3072\u3068\u3064\u5C4B\u6839\u306E\u4E0B\u0032",
+     "2-u9tlzr9756bt3uc0v"),
+
+    # (P) Maji<de>Koi<suru>5<byou><mae>
+    (u"\u004D\u0061\u006A\u0069\u3067\u004B\u006F\u0069\u3059"
+     u"\u308B\u0035\u79D2\u524D",
+     "MajiKoi5-783gue6qz075azm5e"),
+
+     # (Q) <pafii>de<runba>
+    (u"\u30D1\u30D5\u30A3\u30FC\u0064\u0065\u30EB\u30F3\u30D0",
+     "de-jg4avhby1noc0d"),
+
+    # (R) <sono><supiido><de>
+    (u"\u305D\u306E\u30B9\u30D4\u30FC\u30C9\u3067",
+     "d9juau41awczczp"),
+
+    # (S) -> $1.00 <-
+    (u"\u002D\u003E\u0020\u0024\u0031\u002E\u0030\u0030\u0020"
+     u"\u003C\u002D",
+     "-> $1.00 <--")
+    ]
+
+for i in punycode_testcases:
+    if len(i)!=2:
+        print repr(i)
+
+class PunycodeTest(unittest.TestCase):
+    def test_encode(self):
+        for uni, puny in punycode_testcases:
+            # Need to convert both strings to lower case, since
+            # some of the extended encodings use upper case, but our
+            # code produces only lower case. Converting just puny to
+            # lower is also insufficient, since some of the input characters
+            # are upper case.
+            self.assertEquals(uni.encode("punycode").lower(), puny.lower())
+
+    def test_decode(self):
+        for uni, puny in punycode_testcases:
+            self.assertEquals(uni, puny.decode("punycode"))
+
+class UnicodeInternalTest(unittest.TestCase):
+    def test_bug1251300(self):
+        # Decoding with unicode_internal used to not correctly handle "code
+        # points" above 0x10ffff on UCS-4 builds.
+        if sys.maxunicode > 0xffff:
+            ok = [
+                ("\x00\x10\xff\xff", u"\U0010ffff"),
+                ("\x00\x00\x01\x01", u"\U00000101"),
+                ("", u""),
+            ]
+            not_ok = [
+                "\x7f\xff\xff\xff",
+                "\x80\x00\x00\x00",
+                "\x81\x00\x00\x00",
+                "\x00",
+                "\x00\x00\x00\x00\x00",
+            ]
+            for internal, uni in ok:
+                if sys.byteorder == "little":
+                    internal = "".join(reversed(internal))
+                self.assertEquals(uni, internal.decode("unicode_internal"))
+            for internal in not_ok:
+                if sys.byteorder == "little":
+                    internal = "".join(reversed(internal))
+                self.assertRaises(UnicodeDecodeError, internal.decode,
+                    "unicode_internal")
+
+    def test_decode_error_attributes(self):
+        if sys.maxunicode > 0xffff:
+            try:
+                "\x00\x00\x00\x00\x00\x11\x11\x00".decode("unicode_internal")
+            except UnicodeDecodeError, ex:
+                self.assertEquals("unicode_internal", ex.encoding)
+                self.assertEquals("\x00\x00\x00\x00\x00\x11\x11\x00", ex.object)
+                self.assertEquals(4, ex.start)
+                self.assertEquals(8, ex.end)
+            else:
+                self.fail()
+
+    def test_decode_callback(self):
+        if sys.maxunicode > 0xffff:
+            codecs.register_error("UnicodeInternalTest", codecs.ignore_errors)
+            decoder = codecs.getdecoder("unicode_internal")
+            ab = u"ab".encode("unicode_internal")
+            ignored = decoder("%s\x22\x22\x22\x22%s" % (ab[:4], ab[4:]),
+                "UnicodeInternalTest")
+            self.assertEquals((u"ab", 12), ignored)
+
+    def test_encode_length(self):
+        # Issue 3739
+        encoder = codecs.getencoder("unicode_internal")
+        self.assertEquals(encoder(u"a")[1], 1)
+        self.assertEquals(encoder(u"\xe9\u0142")[1], 2)
+
+        encoder = codecs.getencoder("string-escape")
+        self.assertEquals(encoder(r'\x00')[1], 4)
+
+# From http://www.gnu.org/software/libidn/draft-josefsson-idn-test-vectors.html
+nameprep_tests = [
+    # 3.1 Map to nothing.
+    ('foo\xc2\xad\xcd\x8f\xe1\xa0\x86\xe1\xa0\x8bbar'
+     '\xe2\x80\x8b\xe2\x81\xa0baz\xef\xb8\x80\xef\xb8\x88\xef'
+     '\xb8\x8f\xef\xbb\xbf',
+     'foobarbaz'),
+    # 3.2 Case folding ASCII U+0043 U+0041 U+0046 U+0045.
+    ('CAFE',
+     'cafe'),
+    # 3.3 Case folding 8bit U+00DF (german sharp s).
+    # The original test case is bogus; it says \xc3\xdf
+    ('\xc3\x9f',
+     'ss'),
+    # 3.4 Case folding U+0130 (turkish capital I with dot).
+    ('\xc4\xb0',
+     'i\xcc\x87'),
+    # 3.5 Case folding multibyte U+0143 U+037A.
+    ('\xc5\x83\xcd\xba',
+     '\xc5\x84 \xce\xb9'),
+    # 3.6 Case folding U+2121 U+33C6 U+1D7BB.
+    # XXX: skip this as it fails in UCS-2 mode
+    #('\xe2\x84\xa1\xe3\x8f\x86\xf0\x9d\x9e\xbb',
+    # 'telc\xe2\x88\x95kg\xcf\x83'),
+    (None, None),
+    # 3.7 Normalization of U+006a U+030c U+00A0 U+00AA.
+    ('j\xcc\x8c\xc2\xa0\xc2\xaa',
+     '\xc7\xb0 a'),
+    # 3.8 Case folding U+1FB7 and normalization.
+    ('\xe1\xbe\xb7',
+     '\xe1\xbe\xb6\xce\xb9'),
+    # 3.9 Self-reverting case folding U+01F0 and normalization.
+    # The original test case is bogus, it says `\xc7\xf0'
+    ('\xc7\xb0',
+     '\xc7\xb0'),
+    # 3.10 Self-reverting case folding U+0390 and normalization.
+    ('\xce\x90',
+     '\xce\x90'),
+    # 3.11 Self-reverting case folding U+03B0 and normalization.
+    ('\xce\xb0',
+     '\xce\xb0'),
+    # 3.12 Self-reverting case folding U+1E96 and normalization.
+    ('\xe1\xba\x96',
+     '\xe1\xba\x96'),
+    # 3.13 Self-reverting case folding U+1F56 and normalization.
+    ('\xe1\xbd\x96',
+     '\xe1\xbd\x96'),
+    # 3.14 ASCII space character U+0020.
+    (' ',
+     ' '),
+    # 3.15 Non-ASCII 8bit space character U+00A0.
+    ('\xc2\xa0',
+     ' '),
+    # 3.16 Non-ASCII multibyte space character U+1680.
+    ('\xe1\x9a\x80',
+     None),
+    # 3.17 Non-ASCII multibyte space character U+2000.
+    ('\xe2\x80\x80',
+     ' '),
+    # 3.18 Zero Width Space U+200b.
+    ('\xe2\x80\x8b',
+     ''),
+    # 3.19 Non-ASCII multibyte space character U+3000.
+    ('\xe3\x80\x80',
+     ' '),
+    # 3.20 ASCII control characters U+0010 U+007F.
+    ('\x10\x7f',
+     '\x10\x7f'),
+    # 3.21 Non-ASCII 8bit control character U+0085.
+    ('\xc2\x85',
+     None),
+    # 3.22 Non-ASCII multibyte control character U+180E.
+    ('\xe1\xa0\x8e',
+     None),
+    # 3.23 Zero Width No-Break Space U+FEFF.
+    ('\xef\xbb\xbf',
+     ''),
+    # 3.24 Non-ASCII control character U+1D175.
+    ('\xf0\x9d\x85\xb5',
+     None),
+    # 3.25 Plane 0 private use character U+F123.
+    ('\xef\x84\xa3',
+     None),
+    # 3.26 Plane 15 private use character U+F1234.
+    ('\xf3\xb1\x88\xb4',
+     None),
+    # 3.27 Plane 16 private use character U+10F234.
+    ('\xf4\x8f\x88\xb4',
+     None),
+    # 3.28 Non-character code point U+8FFFE.
+    ('\xf2\x8f\xbf\xbe',
+     None),
+    # 3.29 Non-character code point U+10FFFF.
+    ('\xf4\x8f\xbf\xbf',
+     None),
+    # 3.30 Surrogate code U+DF42.
+    ('\xed\xbd\x82',
+     None),
+    # 3.31 Non-plain text character U+FFFD.
+    ('\xef\xbf\xbd',
+     None),
+    # 3.32 Ideographic description character U+2FF5.
+    ('\xe2\xbf\xb5',
+     None),
+    # 3.33 Display property character U+0341.
+    ('\xcd\x81',
+     '\xcc\x81'),
+    # 3.34 Left-to-right mark U+200E.
+    ('\xe2\x80\x8e',
+     None),
+    # 3.35 Deprecated U+202A.
+    ('\xe2\x80\xaa',
+     None),
+    # 3.36 Language tagging character U+E0001.
+    ('\xf3\xa0\x80\x81',
+     None),
+    # 3.37 Language tagging character U+E0042.
+    ('\xf3\xa0\x81\x82',
+     None),
+    # 3.38 Bidi: RandALCat character U+05BE and LCat characters.
+    ('foo\xd6\xbebar',
+     None),
+    # 3.39 Bidi: RandALCat character U+FD50 and LCat characters.
+    ('foo\xef\xb5\x90bar',
+     None),
+    # 3.40 Bidi: RandALCat character U+FB38 and LCat characters.
+    ('foo\xef\xb9\xb6bar',
+     'foo \xd9\x8ebar'),
+    # 3.41 Bidi: RandALCat without trailing RandALCat U+0627 U+0031.
+    ('\xd8\xa71',
+     None),
+    # 3.42 Bidi: RandALCat character U+0627 U+0031 U+0628.
+    ('\xd8\xa71\xd8\xa8',
+     '\xd8\xa71\xd8\xa8'),
+    # 3.43 Unassigned code point U+E0002.
+    # Skip this test as we allow unassigned
+    #('\xf3\xa0\x80\x82',
+    # None),
+    (None, None),
+    # 3.44 Larger test (shrinking).
+    # Original test case reads \xc3\xdf
+    ('X\xc2\xad\xc3\x9f\xc4\xb0\xe2\x84\xa1j\xcc\x8c\xc2\xa0\xc2'
+     '\xaa\xce\xb0\xe2\x80\x80',
+     'xssi\xcc\x87tel\xc7\xb0 a\xce\xb0 '),
+    # 3.45 Larger test (expanding).
+    # Original test case reads \xc3\x9f
+    ('X\xc3\x9f\xe3\x8c\x96\xc4\xb0\xe2\x84\xa1\xe2\x92\x9f\xe3\x8c'
+     '\x80',
+     'xss\xe3\x82\xad\xe3\x83\xad\xe3\x83\xa1\xe3\x83\xbc\xe3'
+     '\x83\x88\xe3\x83\xabi\xcc\x87tel\x28d\x29\xe3\x82'
+     '\xa2\xe3\x83\x91\xe3\x83\xbc\xe3\x83\x88')
+    ]
+
+
+class NameprepTest(unittest.TestCase):
+    def test_nameprep(self):
+        from encodings.idna import nameprep
+        for pos, (orig, prepped) in enumerate(nameprep_tests):
+            if orig is None:
+                # Skipped
+                continue
+            # The Unicode strings are given in UTF-8
+            orig = unicode(orig, "utf-8")
+            if prepped is None:
+                # Input contains prohibited characters
+                self.assertRaises(UnicodeError, nameprep, orig)
+            else:
+                prepped = unicode(prepped, "utf-8")
+                try:
+                    self.assertEquals(nameprep(orig), prepped)
+                except Exception,e:
+                    raise test_support.TestFailed("Test 3.%d: %s" % (pos+1, str(e)))
+
+class IDNACodecTest(unittest.TestCase):
+    def test_builtin_decode(self):
+        self.assertEquals(unicode("python.org", "idna"), u"python.org")
+        self.assertEquals(unicode("python.org.", "idna"), u"python.org.")
+        self.assertEquals(unicode("xn--pythn-mua.org", "idna"), u"pyth\xf6n.org")
+        self.assertEquals(unicode("xn--pythn-mua.org.", "idna"), u"pyth\xf6n.org.")
+
+    def test_builtin_encode(self):
+        self.assertEquals(u"python.org".encode("idna"), "python.org")
+        self.assertEquals("python.org.".encode("idna"), "python.org.")
+        self.assertEquals(u"pyth\xf6n.org".encode("idna"), "xn--pythn-mua.org")
+        self.assertEquals(u"pyth\xf6n.org.".encode("idna"), "xn--pythn-mua.org.")
+
+    def test_stream(self):
+        import StringIO
+        r = codecs.getreader("idna")(StringIO.StringIO("abc"))
+        r.read(3)
+        self.assertEquals(r.read(), u"")
+
+    def test_incremental_decode(self):
+        self.assertEquals(
+            "".join(codecs.iterdecode("python.org", "idna")),
+            u"python.org"
+        )
+        self.assertEquals(
+            "".join(codecs.iterdecode("python.org.", "idna")),
+            u"python.org."
+        )
+        self.assertEquals(
+            "".join(codecs.iterdecode("xn--pythn-mua.org.", "idna")),
+            u"pyth\xf6n.org."
+        )
+        self.assertEquals(
+            "".join(codecs.iterdecode("xn--pythn-mua.org.", "idna")),
+            u"pyth\xf6n.org."
+        )
+
+        decoder = codecs.getincrementaldecoder("idna")()
+        self.assertEquals(decoder.decode("xn--xam", ), u"")
+        self.assertEquals(decoder.decode("ple-9ta.o", ), u"\xe4xample.")
+        self.assertEquals(decoder.decode(u"rg"), u"")
+        self.assertEquals(decoder.decode(u"", True), u"org")
+
+        decoder.reset()
+        self.assertEquals(decoder.decode("xn--xam", ), u"")
+        self.assertEquals(decoder.decode("ple-9ta.o", ), u"\xe4xample.")
+        self.assertEquals(decoder.decode("rg."), u"org.")
+        self.assertEquals(decoder.decode("", True), u"")
+
+    def test_incremental_encode(self):
+        self.assertEquals(
+            "".join(codecs.iterencode(u"python.org", "idna")),
+            "python.org"
+        )
+        self.assertEquals(
+            "".join(codecs.iterencode(u"python.org.", "idna")),
+            "python.org."
+        )
+        self.assertEquals(
+            "".join(codecs.iterencode(u"pyth\xf6n.org.", "idna")),
+            "xn--pythn-mua.org."
+        )
+        self.assertEquals(
+            "".join(codecs.iterencode(u"pyth\xf6n.org.", "idna")),
+            "xn--pythn-mua.org."
+        )
+
+        encoder = codecs.getincrementalencoder("idna")()
+        self.assertEquals(encoder.encode(u"\xe4x"), "")
+        self.assertEquals(encoder.encode(u"ample.org"), "xn--xample-9ta.")
+        self.assertEquals(encoder.encode(u"", True), "org")
+
+        encoder.reset()
+        self.assertEquals(encoder.encode(u"\xe4x"), "")
+        self.assertEquals(encoder.encode(u"ample.org."), "xn--xample-9ta.org.")
+        self.assertEquals(encoder.encode(u"", True), "")
+
+class CodecsModuleTest(unittest.TestCase):
+
+    def test_decode(self):
+        self.assertEquals(codecs.decode('\xe4\xf6\xfc', 'latin-1'),
+                          u'\xe4\xf6\xfc')
+        self.assertRaises(TypeError, codecs.decode)
+        self.assertEquals(codecs.decode('abc'), u'abc')
+        self.assertRaises(UnicodeDecodeError, codecs.decode, '\xff', 'ascii')
+
+    def test_encode(self):
+        self.assertEquals(codecs.encode(u'\xe4\xf6\xfc', 'latin-1'),
+                          '\xe4\xf6\xfc')
+        self.assertRaises(TypeError, codecs.encode)
+        self.assertRaises(LookupError, codecs.encode, "foo", "__spam__")
+        self.assertEquals(codecs.encode(u'abc'), 'abc')
+        self.assertRaises(UnicodeEncodeError, codecs.encode, u'\xffff', 'ascii')
+
+    def test_register(self):
+        self.assertRaises(TypeError, codecs.register)
+        self.assertRaises(TypeError, codecs.register, 42)
+
+    def test_lookup(self):
+        self.assertRaises(TypeError, codecs.lookup)
+        self.assertRaises(LookupError, codecs.lookup, "__spam__")
+        self.assertRaises(LookupError, codecs.lookup, " ")
+
+    def test_getencoder(self):
+        self.assertRaises(TypeError, codecs.getencoder)
+        self.assertRaises(LookupError, codecs.getencoder, "__spam__")
+
+    def test_getdecoder(self):
+        self.assertRaises(TypeError, codecs.getdecoder)
+        self.assertRaises(LookupError, codecs.getdecoder, "__spam__")
+
+    def test_getreader(self):
+        self.assertRaises(TypeError, codecs.getreader)
+        self.assertRaises(LookupError, codecs.getreader, "__spam__")
+
+    def test_getwriter(self):
+        self.assertRaises(TypeError, codecs.getwriter)
+        self.assertRaises(LookupError, codecs.getwriter, "__spam__")
+
+class StreamReaderTest(unittest.TestCase):
+
+    def setUp(self):
+        self.reader = codecs.getreader('utf-8')
+        self.stream = StringIO.StringIO('\xed\x95\x9c\n\xea\xb8\x80')
+
+    def test_readlines(self):
+        f = self.reader(self.stream)
+        self.assertEquals(f.readlines(), [u'\ud55c\n', u'\uae00'])
+
+class EncodedFileTest(unittest.TestCase):
+
+    def test_basic(self):
+        f = StringIO.StringIO('\xed\x95\x9c\n\xea\xb8\x80')
+        ef = codecs.EncodedFile(f, 'utf-16-le', 'utf-8')
+        self.assertEquals(ef.read(), '\\\xd5\n\x00\x00\xae')
+
+        f = StringIO.StringIO()
+        ef = codecs.EncodedFile(f, 'utf-8', 'latin1')
+        ef.write('\xc3\xbc')
+        self.assertEquals(f.getvalue(), '\xfc')
+
+class Str2StrTest(unittest.TestCase):
+
+    def test_read(self):
+        sin = "\x80".encode("base64_codec")
+        reader = codecs.getreader("base64_codec")(StringIO.StringIO(sin))
+        sout = reader.read()
+        self.assertEqual(sout, "\x80")
+        self.assertIsInstance(sout, str)
+
+    def test_readline(self):
+        sin = "\x80".encode("base64_codec")
+        reader = codecs.getreader("base64_codec")(StringIO.StringIO(sin))
+        sout = reader.readline()
+        self.assertEqual(sout, "\x80")
+        self.assertIsInstance(sout, str)
+
+all_unicode_encodings = [
+    "ascii",
+    "base64_codec",
+    "big5",
+    "big5hkscs",
+    "charmap",
+    "cp037",
+    "cp1006",
+    "cp1026",
+    "cp1140",
+    "cp1250",
+    "cp1251",
+    "cp1252",
+    "cp1253",
+    "cp1254",
+    "cp1255",
+    "cp1256",
+    "cp1257",
+    "cp1258",
+    "cp424",
+    "cp437",
+    "cp500",
+    "cp720",
+    "cp737",
+    "cp775",
+    "cp850",
+    "cp852",
+    "cp855",
+    "cp856",
+    "cp857",
+    "cp858",
+    "cp860",
+    "cp861",
+    "cp862",
+    "cp863",
+    "cp864",
+    "cp865",
+    "cp866",
+    "cp869",
+    "cp874",
+    "cp875",
+    "cp932",
+    "cp949",
+    "cp950",
+    "euc_jis_2004",
+    "euc_jisx0213",
+    "euc_jp",
+    "euc_kr",
+    "gb18030",
+    "gb2312",
+    "gbk",
+    "hex_codec",
+    "hp_roman8",
+    "hz",
+    "idna",
+    "iso2022_jp",
+    "iso2022_jp_1",
+    "iso2022_jp_2",
+    "iso2022_jp_2004",
+    "iso2022_jp_3",
+    "iso2022_jp_ext",
+    "iso2022_kr",
+    "iso8859_1",
+    "iso8859_10",
+    "iso8859_11",
+    "iso8859_13",
+    "iso8859_14",
+    "iso8859_15",
+    "iso8859_16",
+    "iso8859_2",
+    "iso8859_3",
+    "iso8859_4",
+    "iso8859_5",
+    "iso8859_6",
+    "iso8859_7",
+    "iso8859_8",
+    "iso8859_9",
+    "johab",
+    "koi8_r",
+    "koi8_u",
+    "latin_1",
+    "mac_cyrillic",
+    "mac_greek",
+    "mac_iceland",
+    "mac_latin2",
+    "mac_roman",
+    "mac_turkish",
+    "palmos",
+    "ptcp154",
+    "punycode",
+    "raw_unicode_escape",
+    "rot_13",
+    "shift_jis",
+    "shift_jis_2004",
+    "shift_jisx0213",
+    "tis_620",
+    "unicode_escape",
+    "unicode_internal",
+    "utf_16",
+    "utf_16_be",
+    "utf_16_le",
+    "utf_7",
+    "utf_8",
+]
+
+if hasattr(codecs, "mbcs_encode"):
+    all_unicode_encodings.append("mbcs")
+
+# The following encodings work only with str, not unicode
+all_string_encodings = [
+    "quopri_codec",
+    "string_escape",
+    "uu_codec",
+]
+
+# The following encoding is not tested, because it's not supposed
+# to work:
+#    "undefined"
+
+# The following encodings don't work in stateful mode
+broken_unicode_with_streams = [
+    "base64_codec",
+    "hex_codec",
+    "punycode",
+    "unicode_internal"
+]
+broken_incremental_coders = broken_unicode_with_streams[:]
+
+# The following encodings only support "strict" mode
+only_strict_mode = [
+    "idna",
+    "zlib_codec",
+    "bz2_codec",
+]
+
+try:
+    import bz2
+except ImportError:
+    pass
+else:
+    all_unicode_encodings.append("bz2_codec")
+    broken_unicode_with_streams.append("bz2_codec")
+
+try:
+    import zlib
+except ImportError:
+    pass
+else:
+    all_unicode_encodings.append("zlib_codec")
+    broken_unicode_with_streams.append("zlib_codec")
+
+class BasicUnicodeTest(unittest.TestCase):
+    def test_basics(self):
+        s = u"abc123" # all codecs should be able to encode these
+        for encoding in all_unicode_encodings:
+            name = codecs.lookup(encoding).name
+            if encoding.endswith("_codec"):
+                name += "_codec"
+            elif encoding == "latin_1":
+                name = "latin_1"
+            self.assertEqual(encoding.replace("_", "-"), name.replace("_", "-"))
+            (bytes, size) = codecs.getencoder(encoding)(s)
+            self.assertEqual(size, len(s), "%r != %r (encoding=%r)" % (size, len(s), encoding))
+            (chars, size) = codecs.getdecoder(encoding)(bytes)
+            self.assertEqual(chars, s, "%r != %r (encoding=%r)" % (chars, s, encoding))
+
+            if encoding not in broken_unicode_with_streams:
+                # check stream reader/writer
+                q = Queue()
+                writer = codecs.getwriter(encoding)(q)
+                encodedresult = ""
+                for c in s:
+                    writer.write(c)
+                    encodedresult += q.read()
+                q = Queue()
+                reader = codecs.getreader(encoding)(q)
+                decodedresult = u""
+                for c in encodedresult:
+                    q.write(c)
+                    decodedresult += reader.read()
+                self.assertEqual(decodedresult, s, "%r != %r (encoding=%r)" % (decodedresult, s, encoding))
+
+            if encoding not in broken_incremental_coders:
+                # check incremental decoder/encoder (fetched via the Python
+                # and C API) and iterencode()/iterdecode()
+                try:
+                    encoder = codecs.getincrementalencoder(encoding)()
+                    cencoder = _testcapi.codec_incrementalencoder(encoding)
+                except LookupError: # no IncrementalEncoder
+                    pass
+                else:
+                    # check incremental decoder/encoder
+                    encodedresult = ""
+                    for c in s:
+                        encodedresult += encoder.encode(c)
+                    encodedresult += encoder.encode(u"", True)
+                    decoder = codecs.getincrementaldecoder(encoding)()
+                    decodedresult = u""
+                    for c in encodedresult:
+                        decodedresult += decoder.decode(c)
+                    decodedresult += decoder.decode("", True)
+                    self.assertEqual(decodedresult, s, "%r != %r (encoding=%r)" % (decodedresult, s, encoding))
+
+                    # check C API
+                    encodedresult = ""
+                    for c in s:
+                        encodedresult += cencoder.encode(c)
+                    encodedresult += cencoder.encode(u"", True)
+                    cdecoder = _testcapi.codec_incrementaldecoder(encoding)
+                    decodedresult = u""
+                    for c in encodedresult:
+                        decodedresult += cdecoder.decode(c)
+                    decodedresult += cdecoder.decode("", True)
+                    self.assertEqual(decodedresult, s, "%r != %r (encoding=%r)" % (decodedresult, s, encoding))
+
+                    # check iterencode()/iterdecode()
+                    result = u"".join(codecs.iterdecode(codecs.iterencode(s, encoding), encoding))
+                    self.assertEqual(result, s, "%r != %r (encoding=%r)" % (result, s, encoding))
+
+                    # check iterencode()/iterdecode() with empty string
+                    result = u"".join(codecs.iterdecode(codecs.iterencode(u"", encoding), encoding))
+                    self.assertEqual(result, u"")
+
+                if encoding not in only_strict_mode:
+                    # check incremental decoder/encoder with errors argument
+                    try:
+                        encoder = codecs.getincrementalencoder(encoding)("ignore")
+                        cencoder = _testcapi.codec_incrementalencoder(encoding, "ignore")
+                    except LookupError: # no IncrementalEncoder
+                        pass
+                    else:
+                        encodedresult = "".join(encoder.encode(c) for c in s)
+                        decoder = codecs.getincrementaldecoder(encoding)("ignore")
+                        decodedresult = u"".join(decoder.decode(c) for c in encodedresult)
+                        self.assertEqual(decodedresult, s, "%r != %r (encoding=%r)" % (decodedresult, s, encoding))
+
+                        encodedresult = "".join(cencoder.encode(c) for c in s)
+                        cdecoder = _testcapi.codec_incrementaldecoder(encoding, "ignore")
+                        decodedresult = u"".join(cdecoder.decode(c) for c in encodedresult)
+                        self.assertEqual(decodedresult, s, "%r != %r (encoding=%r)" % (decodedresult, s, encoding))
+
+    def test_seek(self):
+        # all codecs should be able to encode these
+        s = u"%s\n%s\n" % (100*u"abc123", 100*u"def456")
+        for encoding in all_unicode_encodings:
+            if encoding == "idna": # FIXME: See SF bug #1163178
+                continue
+            if encoding in broken_unicode_with_streams:
+                continue
+            reader = codecs.getreader(encoding)(StringIO.StringIO(s.encode(encoding)))
+            for t in xrange(5):
+                # Test that calling seek resets the internal codec state and buffers
+                reader.seek(0, 0)
+                line = reader.readline()
+                self.assertEqual(s[:len(line)], line)
+
+    def test_bad_decode_args(self):
+        for encoding in all_unicode_encodings:
+            decoder = codecs.getdecoder(encoding)
+            self.assertRaises(TypeError, decoder)
+            if encoding not in ("idna", "punycode"):
+                self.assertRaises(TypeError, decoder, 42)
+
+    def test_bad_encode_args(self):
+        for encoding in all_unicode_encodings:
+            encoder = codecs.getencoder(encoding)
+            self.assertRaises(TypeError, encoder)
+
+    def test_encoding_map_type_initialized(self):
+        from encodings import cp1140
+        # This used to crash, we are only verifying there's no crash.
+        table_type = type(cp1140.encoding_table)
+        self.assertEqual(table_type, table_type)
+
+class BasicStrTest(unittest.TestCase):
+    def test_basics(self):
+        s = "abc123"
+        for encoding in all_string_encodings:
+            (bytes, size) = codecs.getencoder(encoding)(s)
+            self.assertEqual(size, len(s))
+            (chars, size) = codecs.getdecoder(encoding)(bytes)
+            self.assertEqual(chars, s, "%r != %r (encoding=%r)" % (chars, s, encoding))
+
+class CharmapTest(unittest.TestCase):
+    def test_decode_with_string_map(self):
+        self.assertEquals(
+            codecs.charmap_decode("\x00\x01\x02", "strict", u"abc"),
+            (u"abc", 3)
+        )
+
+        self.assertEquals(
+            codecs.charmap_decode("\x00\x01\x02", "replace", u"ab"),
+            (u"ab\ufffd", 3)
+        )
+
+        self.assertEquals(
+            codecs.charmap_decode("\x00\x01\x02", "replace", u"ab\ufffe"),
+            (u"ab\ufffd", 3)
+        )
+
+        self.assertEquals(
+            codecs.charmap_decode("\x00\x01\x02", "ignore", u"ab"),
+            (u"ab", 3)
+        )
+
+        self.assertEquals(
+            codecs.charmap_decode("\x00\x01\x02", "ignore", u"ab\ufffe"),
+            (u"ab", 3)
+        )
+
+        allbytes = "".join(chr(i) for i in xrange(256))
+        self.assertEquals(
+            codecs.charmap_decode(allbytes, "ignore", u""),
+            (u"", len(allbytes))
+        )
+
+class WithStmtTest(unittest.TestCase):
+    def test_encodedfile(self):
+        f = StringIO.StringIO("\xc3\xbc")
+        with codecs.EncodedFile(f, "latin-1", "utf-8") as ef:
+            self.assertEquals(ef.read(), "\xfc")
+
+    def test_streamreaderwriter(self):
+        f = StringIO.StringIO("\xc3\xbc")
+        info = codecs.lookup("utf-8")
+        with codecs.StreamReaderWriter(f, info.streamreader,
+                                       info.streamwriter, 'strict') as srw:
+            self.assertEquals(srw.read(), u"\xfc")
+
+
+class BomTest(unittest.TestCase):
+    def test_seek0(self):
+        data = u"1234567890"
+        tests = ("utf-16",
+                 "utf-16-le",
+                 "utf-16-be",
+                 "utf-32",
+                 "utf-32-le",
+                 "utf-32-be")
+        for encoding in tests:
+            # Check if the BOM is written only once
+            with codecs.open(test_support.TESTFN, 'w+', encoding=encoding) as f:
+                f.write(data)
+                f.write(data)
+                f.seek(0)
+                self.assertEquals(f.read(), data * 2)
+                f.seek(0)
+                self.assertEquals(f.read(), data * 2)
+
+            # Check that the BOM is written after a seek(0)
+            with codecs.open(test_support.TESTFN, 'w+', encoding=encoding) as f:
+                f.write(data[0])
+                self.assertNotEquals(f.tell(), 0)
+                f.seek(0)
+                f.write(data)
+                f.seek(0)
+                self.assertEquals(f.read(), data)
+
+            # (StreamWriter) Check that the BOM is written after a seek(0)
+            with codecs.open(test_support.TESTFN, 'w+', encoding=encoding) as f:
+                f.writer.write(data[0])
+                self.assertNotEquals(f.writer.tell(), 0)
+                f.writer.seek(0)
+                f.writer.write(data)
+                f.seek(0)
+                self.assertEquals(f.read(), data)
+
+            # Check that the BOM is not written after a seek() at a position
+            # different than the start
+            with codecs.open(test_support.TESTFN, 'w+', encoding=encoding) as f:
+                f.write(data)
+                f.seek(f.tell())
+                f.write(data)
+                f.seek(0)
+                self.assertEquals(f.read(), data * 2)
+
+            # (StreamWriter) Check that the BOM is not written after a seek()
+            # at a position different than the start
+            with codecs.open(test_support.TESTFN, 'w+', encoding=encoding) as f:
+                f.writer.write(data)
+                f.writer.seek(f.writer.tell())
+                f.writer.write(data)
+                f.seek(0)
+                self.assertEquals(f.read(), data * 2)
+
+
+def test_main():
+    test_support.run_unittest(
+        UTF32Test,
+        UTF32LETest,
+        UTF32BETest,
+        UTF16Test,
+        UTF16LETest,
+        UTF16BETest,
+        UTF8Test,
+        UTF8SigTest,
+        UTF7Test,
+        UTF16ExTest,
+        ReadBufferTest,
+        CharBufferTest,
+        EscapeDecodeTest,
+        RecodingTest,
+        PunycodeTest,
+        UnicodeInternalTest,
+        NameprepTest,
+        IDNACodecTest,
+        CodecsModuleTest,
+        StreamReaderTest,
+        EncodedFileTest,
+        Str2StrTest,
+        BasicUnicodeTest,
+        BasicStrTest,
+        CharmapTest,
+        WithStmtTest,
+        BomTest,
+    )
+
+
+if __name__ == "__main__":
+    test_main()