"""Regresssion tests for urllib"""

import urllib

import httplib

import unittest

from test import test_support

import os

import mimetools

import tempfile

import StringIO

def hexescape(char):

    """Escape char as RFC 2396 specifies"""

    hex_repr = hex(ord(char))[2:].upper()

    if len(hex_repr) == 1:

        hex_repr = "0%s" % hex_repr

    return "%" + hex_repr

class urlopen_FileTests(unittest.TestCase):

    """Test urlopen() opening a temporary file.

    Try to test as much functionality as possible so as to cut down on reliance

    on connecting to the Net for testing.

    """

    def setUp(self):

        """Setup of a temp file to use for testing"""

        self.text = "test_urllib: %s\n" % self.__class__.__name__

        FILE = file(test_support.TESTFN, 'wb')

        try:

            FILE.write(self.text)

        finally:

            FILE.close()

        self.pathname = test_support.TESTFN

        self.returned_obj = urllib.urlopen("file:%s" % self.pathname)

    def tearDown(self):

        """Shut down the open object"""

        self.returned_obj.close()

        os.remove(test_support.TESTFN)

    def test_interface(self):

        # Make sure object returned by urlopen() has the specified methods

        for attr in ("read", "readline", "readlines", "fileno",

                     "close", "info", "geturl", "getcode", "__iter__"):

            self.assert_(hasattr(self.returned_obj, attr),

                         "object returned by urlopen() lacks %s attribute" %

                         attr)

    def test_read(self):

        self.assertEqual(self.text, self.returned_obj.read())

    def test_readline(self):

        self.assertEqual(self.text, self.returned_obj.readline())

        self.assertEqual('', self.returned_obj.readline(),

                         "calling readline() after exhausting the file did not"

                         " return an empty string")

    def test_readlines(self):

        lines_list = self.returned_obj.readlines()

        self.assertEqual(len(lines_list), 1,

                         "readlines() returned the wrong number of lines")

        self.assertEqual(lines_list[0], self.text,

                         "readlines() returned improper text")

    def test_fileno(self):

        file_num = self.returned_obj.fileno()

        self.assert_(isinstance(file_num, int),

                     "fileno() did not return an int")

        self.assertEqual(os.read(file_num, len(self.text)), self.text,

                         "Reading on the file descriptor returned by fileno() "

                         "did not return the expected text")

    def test_close(self):

        # Test close() by calling it hear and then having it be called again

        # by the tearDown() method for the test

        self.returned_obj.close()

    def test_info(self):

        self.assert_(isinstance(self.returned_obj.info(), mimetools.Message))

    def test_geturl(self):

        self.assertEqual(self.returned_obj.geturl(), self.pathname)

    def test_getcode(self):

        self.assertEqual(self.returned_obj.getcode(), None)

    def test_iter(self):

        # Test iterator

        # Don't need to count number of iterations since test would fail the

        # instant it returned anything beyond the first line from the

        # comparison

        for line in self.returned_obj.__iter__():

            self.assertEqual(line, self.text)

class ProxyTests(unittest.TestCase):

    def setUp(self):

        # Save all proxy related env vars

        self._saved_environ = dict([(k, v) for k, v in os.environ.iteritems()

                                    if k.lower().find('proxy') >= 0])

        # Delete all proxy related env vars

        for k in self._saved_environ:

            del os.environ[k]

    def tearDown(self):

        # Restore all proxy related env vars

        for k, v in self._saved_environ.iteritems():

            os.environ[k] = v

    def test_getproxies_environment_keep_no_proxies(self):

        os.environ['NO_PROXY'] = 'localhost'

        proxies = urllib.getproxies_environment()

        # getproxies_environment use lowered case truncated (no '_proxy') keys

        self.assertEquals('localhost', proxies['no'])

class urlopen_HttpTests(unittest.TestCase):

    """Test urlopen() opening a fake http connection."""

    def fakehttp(self, fakedata):

        class FakeSocket(StringIO.StringIO):

            def sendall(self, str): pass

            def makefile(self, mode, name): return self

            def read(self, amt=None):

                if self.closed: return ''

                return StringIO.StringIO.read(self, amt)

            def readline(self, length=None):

                if self.closed: return ''

                return StringIO.StringIO.readline(self, length)

        class FakeHTTPConnection(httplib.HTTPConnection):

            def connect(self):

                self.sock = FakeSocket(fakedata)

        assert httplib.HTTP._connection_class == httplib.HTTPConnection

        httplib.HTTP._connection_class = FakeHTTPConnection

    def unfakehttp(self):

        httplib.HTTP._connection_class = httplib.HTTPConnection

    def test_read(self):

        self.fakehttp('Hello!')

        try:

            fp = urllib.urlopen("http://python.org/")

            self.assertEqual(fp.readline(), 'Hello!')

            self.assertEqual(fp.readline(), '')

            self.assertEqual(fp.geturl(), 'http://python.org/')

            self.assertEqual(fp.getcode(), 200)

        finally:

            self.unfakehttp()

    def test_read_bogus(self):

        # urlopen() should raise IOError for many error codes.

        self.fakehttp('''HTTP/1.1 401 Authentication Required

Date: Wed, 02 Jan 2008 03:03:54 GMT

Server: Apache/1.3.33 (Debian GNU/Linux) mod_ssl/2.8.22 OpenSSL/0.9.7e

Connection: close

Content-Type: text/html; charset=iso-8859-1

''')

        try:

            self.assertRaises(IOError, urllib.urlopen, "http://python.org/")

        finally:

            self.unfakehttp()

    def test_empty_socket(self):

        # urlopen() raises IOError if the underlying socket does not send any

        # data. (#1680230)

        self.fakehttp('')

        try:

            self.assertRaises(IOError, urllib.urlopen, 'http://something')

        finally:

            self.unfakehttp()

class urlretrieve_FileTests(unittest.TestCase):

    """Test urllib.urlretrieve() on local files"""

    def setUp(self):

        # Create a list of temporary files. Each item in the list is a file

        # name (absolute path or relative to the current working directory).

        # All files in this list will be deleted in the tearDown method. Note,

        # this only helps to makes sure temporary files get deleted, but it

        # does nothing about trying to close files that may still be open. It

        # is the responsibility of the developer to properly close files even

        # when exceptional conditions occur.

        self.tempFiles = []

        # Create a temporary file.

        self.registerFileForCleanUp(test_support.TESTFN)

        self.text = 'testing urllib.urlretrieve'

        try:

            FILE = file(test_support.TESTFN, 'wb')

            FILE.write(self.text)

            FILE.close()

        finally:

            try: FILE.close()

            except: pass

    def tearDown(self):

        # Delete the temporary files.

        for each in self.tempFiles:

            try: os.remove(each)

            except: pass

    def constructLocalFileUrl(self, filePath):

        return "file://%s" % urllib.pathname2url(os.path.abspath(filePath))

    def createNewTempFile(self, data=""):

        """Creates a new temporary file containing the specified data,

        registers the file for deletion during the test fixture tear down, and

        returns the absolute path of the file."""

        newFd, newFilePath = tempfile.mkstemp()

        try:

            self.registerFileForCleanUp(newFilePath)

            newFile = os.fdopen(newFd, "wb")

            newFile.write(data)

            newFile.close()

        finally:

            try: newFile.close()

            except: pass

        return newFilePath

    def registerFileForCleanUp(self, fileName):

        self.tempFiles.append(fileName)

    def test_basic(self):

        # Make sure that a local file just gets its own location returned and

        # a headers value is returned.

        result = urllib.urlretrieve("file:%s" % test_support.TESTFN)

        self.assertEqual(result[0], test_support.TESTFN)

        self.assert_(isinstance(result[1], mimetools.Message),

                     "did not get a mimetools.Message instance as second "

                     "returned value")

    def test_copy(self):

        # Test that setting the filename argument works.

        second_temp = "%s.2" % test_support.TESTFN

        self.registerFileForCleanUp(second_temp)

        result = urllib.urlretrieve(self.constructLocalFileUrl(

            test_support.TESTFN), second_temp)

        self.assertEqual(second_temp, result[0])

        self.assert_(os.path.exists(second_temp), "copy of the file was not "

                                                  "made")

        FILE = file(second_temp, 'rb')

        try:

            text = FILE.read()

            FILE.close()

        finally:

            try: FILE.close()

            except: pass

        self.assertEqual(self.text, text)

    def test_reporthook(self):

        # Make sure that the reporthook works.

        def hooktester(count, block_size, total_size, count_holder=[0]):

            self.assert_(isinstance(count, int))

            self.assert_(isinstance(block_size, int))

            self.assert_(isinstance(total_size, int))

            self.assertEqual(count, count_holder[0])

            count_holder[0] = count_holder[0] + 1

        second_temp = "%s.2" % test_support.TESTFN

        self.registerFileForCleanUp(second_temp)

        urllib.urlretrieve(self.constructLocalFileUrl(test_support.TESTFN),

            second_temp, hooktester)

    def test_reporthook_0_bytes(self):

        # Test on zero length file. Should call reporthook only 1 time.

        report = []

        def hooktester(count, block_size, total_size, _report=report):

            _report.append((count, block_size, total_size))

        srcFileName = self.createNewTempFile()

        urllib.urlretrieve(self.constructLocalFileUrl(srcFileName),

            test_support.TESTFN, hooktester)

        self.assertEqual(len(report), 1)

        self.assertEqual(report[0][2], 0)

    def test_reporthook_5_bytes(self):

        # Test on 5 byte file. Should call reporthook only 2 times (once when

        # the "network connection" is established and once when the block is

        # read). Since the block size is 8192 bytes, only one block read is

        # required to read the entire file.

        report = []

        def hooktester(count, block_size, total_size, _report=report):

            _report.append((count, block_size, total_size))

        srcFileName = self.createNewTempFile("x" * 5)

        urllib.urlretrieve(self.constructLocalFileUrl(srcFileName),

            test_support.TESTFN, hooktester)

        self.assertEqual(len(report), 2)

        self.assertEqual(report[0][1], 8192)

        self.assertEqual(report[0][2], 5)

    def test_reporthook_8193_bytes(self):

        # Test on 8193 byte file. Should call reporthook only 3 times (once

        # when the "network connection" is established, once for the next 8192

        # bytes, and once for the last byte).

        report = []

        def hooktester(count, block_size, total_size, _report=report):

            _report.append((count, block_size, total_size))

        srcFileName = self.createNewTempFile("x" * 8193)

        urllib.urlretrieve(self.constructLocalFileUrl(srcFileName),

            test_support.TESTFN, hooktester)

        self.assertEqual(len(report), 3)

        self.assertEqual(report[0][1], 8192)

        self.assertEqual(report[0][2], 8193)

class QuotingTests(unittest.TestCase):

    """Tests for urllib.quote() and urllib.quote_plus()

    According to RFC 2396 ("Uniform Resource Identifiers), to escape a

    character you write it as '%' + <2 character US-ASCII hex value>.  The Python

    code of ``'%' + hex(ord(<character>))[2:]`` escapes a character properly.

    Case does not matter on the hex letters.

    The various character sets specified are:

    Reserved characters : ";/?:@&=+$,"

        Have special meaning in URIs and must be escaped if not being used for

        their special meaning

    Data characters : letters, digits, and "-_.!~*'()"

        Unreserved and do not need to be escaped; can be, though, if desired

    Control characters : 0x00 - 0x1F, 0x7F

        Have no use in URIs so must be escaped

    space : 0x20

        Must be escaped

    Delimiters : '<>#%"'

        Must be escaped

    Unwise : "{}|\^[]`"

        Must be escaped

    """

    def test_never_quote(self):

        # Make sure quote() does not quote letters, digits, and "_,.-"

        do_not_quote = '' .join(["ABCDEFGHIJKLMNOPQRSTUVWXYZ",

                                 "abcdefghijklmnopqrstuvwxyz",

                                 "0123456789",

                                 "_.-"])

        result = urllib.quote(do_not_quote)

        self.assertEqual(do_not_quote, result,

                         "using quote(): %s != %s" % (do_not_quote, result))

        result = urllib.quote_plus(do_not_quote)

        self.assertEqual(do_not_quote, result,

                        "using quote_plus(): %s != %s" % (do_not_quote, result))

    def test_default_safe(self):

        # Test '/' is default value for 'safe' parameter

        self.assertEqual(urllib.quote.func_defaults[0], '/')

    def test_safe(self):

        # Test setting 'safe' parameter does what it should do

        quote_by_default = "<>"

        result = urllib.quote(quote_by_default, safe=quote_by_default)

        self.assertEqual(quote_by_default, result,

                         "using quote(): %s != %s" % (quote_by_default, result))

        result = urllib.quote_plus(quote_by_default, safe=quote_by_default)

        self.assertEqual(quote_by_default, result,

                         "using quote_plus(): %s != %s" %

                         (quote_by_default, result))

    def test_default_quoting(self):

        # Make sure all characters that should be quoted are by default sans

        # space (separate test for that).

        should_quote = [chr(num) for num in range(32)] # For 0x00 - 0x1F

        should_quote.append('<>#%"{}|\^[]`')

        should_quote.append(chr(127)) # For 0x7F

        should_quote = ''.join(should_quote)

        for char in should_quote:

            result = urllib.quote(char)

            self.assertEqual(hexescape(char), result,

                             "using quote(): %s should be escaped to %s, not %s" %

                             (char, hexescape(char), result))

            result = urllib.quote_plus(char)

            self.assertEqual(hexescape(char), result,

                             "using quote_plus(): "

                             "%s should be escapes to %s, not %s" %

                             (char, hexescape(char), result))

        del should_quote

        partial_quote = "ab[]cd"

        expected = "ab%5B%5Dcd"

        result = urllib.quote(partial_quote)

        self.assertEqual(expected, result,

                         "using quote(): %s != %s" % (expected, result))

        self.assertEqual(expected, result,

                         "using quote_plus(): %s != %s" % (expected, result))

    def test_quoting_space(self):

        # Make sure quote() and quote_plus() handle spaces as specified in

        # their unique way

        result = urllib.quote(' ')

        self.assertEqual(result, hexescape(' '),

                         "using quote(): %s != %s" % (result, hexescape(' ')))

        result = urllib.quote_plus(' ')

        self.assertEqual(result, '+',

                         "using quote_plus(): %s != +" % result)

        given = "a b cd e f"

        expect = given.replace(' ', hexescape(' '))

        result = urllib.quote(given)

        self.assertEqual(expect, result,

                         "using quote(): %s != %s" % (expect, result))

        expect = given.replace(' ', '+')

        result = urllib.quote_plus(given)

        self.assertEqual(expect, result,

                         "using quote_plus(): %s != %s" % (expect, result))

    def test_quoting_plus(self):

        self.assertEqual(urllib.quote_plus('alpha+beta gamma'),

                         'alpha%2Bbeta+gamma')

        self.assertEqual(urllib.quote_plus('alpha+beta gamma', '+'),

                         'alpha+beta+gamma')

class UnquotingTests(unittest.TestCase):

    """Tests for unquote() and unquote_plus()

    See the doc string for quoting_Tests for details on quoting and such.

    """

    def test_unquoting(self):

        # Make sure unquoting of all ASCII values works

        escape_list = []

        for num in range(128):

            given = hexescape(chr(num))

            expect = chr(num)

            result = urllib.unquote(given)

            self.assertEqual(expect, result,

                             "using unquote(): %s != %s" % (expect, result))

            result = urllib.unquote_plus(given)

            self.assertEqual(expect, result,

                             "using unquote_plus(): %s != %s" %

                             (expect, result))

            escape_list.append(given)

        escape_string = ''.join(escape_list)

        del escape_list

        result = urllib.unquote(escape_string)

        self.assertEqual(result.count('%'), 1,

                         "using quote(): not all characters escaped; %s" %

                         result)

        result = urllib.unquote(escape_string)

        self.assertEqual(result.count('%'), 1,

                         "using unquote(): not all characters escaped: "

                         "%s" % result)

    def test_unquoting_parts(self):

        # Make sure unquoting works when have non-quoted characters

        # interspersed

        given = 'ab%sd' % hexescape('c')

        expect = "abcd"

        result = urllib.unquote(given)

        self.assertEqual(expect, result,

                         "using quote(): %s != %s" % (expect, result))

        result = urllib.unquote_plus(given)

        self.assertEqual(expect, result,

                         "using unquote_plus(): %s != %s" % (expect, result))

    def test_unquoting_plus(self):

        # Test difference between unquote() and unquote_plus()

        given = "are+there+spaces..."

        expect = given

        result = urllib.unquote(given)

        self.assertEqual(expect, result,

                         "using unquote(): %s != %s" % (expect, result))

        expect = given.replace('+', ' ')

        result = urllib.unquote_plus(given)

        self.assertEqual(expect, result,

                         "using unquote_plus(): %s != %s" % (expect, result))

    def test_unquote_with_unicode(self):

        r = urllib.unquote(u'br%C3%BCckner_sapporo_20050930.doc')

        self.assertEqual(r, u'br\xc3\xbcckner_sapporo_20050930.doc')

class urlencode_Tests(unittest.TestCase):

    """Tests for urlencode()"""

    def help_inputtype(self, given, test_type):

        """Helper method for testing different input types.

        'given' must lead to only the pairs:

            * 1st, 1

            * 2nd, 2

            * 3rd, 3

        Test cannot assume anything about order.  Docs make no guarantee and

        have possible dictionary input.

        """

        expect_somewhere = ["1st=1", "2nd=2", "3rd=3"]

        result = urllib.urlencode(given)

        for expected in expect_somewhere:

            self.assert_(expected in result,

                         "testing %s: %s not found in %s" %

                         (test_type, expected, result))

        self.assertEqual(result.count('&'), 2,

                         "testing %s: expected 2 '&'s; got %s" %

                         (test_type, result.count('&')))

        amp_location = result.index('&')

        on_amp_left = result[amp_location - 1]

        on_amp_right = result[amp_location + 1]

        self.assert_(on_amp_left.isdigit() and on_amp_right.isdigit(),

                     "testing %s: '&' not located in proper place in %s" %

                     (test_type, result))

        self.assertEqual(len(result), (5 * 3) + 2, #5 chars per thing and amps

                         "testing %s: "

                         "unexpected number of characters: %s != %s" %

                         (test_type, len(result), (5 * 3) + 2))

    def test_using_mapping(self):

        # Test passing in a mapping object as an argument.

        self.help_inputtype({"1st":'1', "2nd":'2', "3rd":'3'},

                            "using dict as input type")

    def test_using_sequence(self):

        # Test passing in a sequence of two-item sequences as an argument.

        self.help_inputtype([('1st', '1'), ('2nd', '2'), ('3rd', '3')],

                            "using sequence of two-item tuples as input")

    def test_quoting(self):

        # Make sure keys and values are quoted using quote_plus()

        given = {"&":"="}

        expect = "%s=%s" % (hexescape('&'), hexescape('='))

        result = urllib.urlencode(given)

        self.assertEqual(expect, result)

        given = {"key name":"A bunch of pluses"}

        expect = "key+name=A+bunch+of+pluses"

        result = urllib.urlencode(given)

        self.assertEqual(expect, result)

    def test_doseq(self):