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Python Open Source » Development » Bazaar 
Bazaar » bzr 2.2b3 » bzrlib » tests » test_urlutils.py
# Copyright (C) 2006-2010 Canonical Ltd
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

"""Tests for the urlutils wrapper."""

import os
import sys

from bzrlib import osutils,urlutils,win32utils
from bzrlib.errors import InvalidURL,InvalidURLJoin,InvalidRebaseURLs
from bzrlib.tests import TestCaseInTempDir,TestCase,TestSkipped


class TestUrlToPath(TestCase):

    def test_basename(self):
        # bzrlib.urlutils.basename
        # Test bzrlib.urlutils.split()
        basename = urlutils.basename
        if sys.platform == 'win32':
            self.assertRaises(InvalidURL, basename, 'file:///path/to/foo')
            self.assertEqual('foo', basename('file:///C|/foo'))
            self.assertEqual('foo', basename('file:///C:/foo'))
            self.assertEqual('', basename('file:///C:/'))
        else:
            self.assertEqual('foo', basename('file:///foo'))
            self.assertEqual('', basename('file:///'))

        self.assertEqual('foo', basename('http://host/path/to/foo'))
        self.assertEqual('foo', basename('http://host/path/to/foo/'))
        self.assertEqual('',
            basename('http://host/path/to/foo/', exclude_trailing_slash=False))
        self.assertEqual('path', basename('http://host/path'))
        self.assertEqual('', basename('http://host/'))
        self.assertEqual('', basename('http://host'))
        self.assertEqual('path', basename('http:///nohost/path'))

        self.assertEqual('path', basename('random+scheme://user:pass@ahost:port/path'))
        self.assertEqual('path', basename('random+scheme://user:pass@ahost:port/path/'))
        self.assertEqual('', basename('random+scheme://user:pass@ahost:port/'))

        # relative paths
        self.assertEqual('foo', basename('path/to/foo'))
        self.assertEqual('foo', basename('path/to/foo/'))
        self.assertEqual('', basename('path/to/foo/',
            exclude_trailing_slash=False))
        self.assertEqual('foo', basename('path/../foo'))
        self.assertEqual('foo', basename('../path/foo'))

    def test_normalize_url_files(self):
        # Test that local paths are properly normalized
        normalize_url = urlutils.normalize_url

        def norm_file(expected, path):
            url = normalize_url(path)
            self.assertStartsWith(url, 'file:///')
            if sys.platform == 'win32':
                url = url[len('file:///C:'):]
            else:
                url = url[len('file://'):]

            self.assertEndsWith(url, expected)

        norm_file('path/to/foo', 'path/to/foo')
        norm_file('/path/to/foo', '/path/to/foo')
        norm_file('path/to/foo', '../path/to/foo')

        # Local paths are assumed to *not* be escaped at all
        try:
            u'uni/\xb5'.encode(osutils.get_user_encoding())
        except UnicodeError:
            # locale cannot handle unicode
            pass
        else:
            norm_file('uni/%C2%B5', u'uni/\xb5')

        norm_file('uni/%25C2%25B5', u'uni/%C2%B5')
        norm_file('uni/%20b', u'uni/ b')
        # All the crazy characters get escaped in local paths => file:/// urls
        # The ' ' character must not be at the end, because on win32
        # it gets stripped off by ntpath.abspath
        norm_file('%27%20%3B/%3F%3A%40%26%3D%2B%24%2C%23', "' ;/?:@&=+$,#")

    def test_normalize_url_hybrid(self):
        # Anything with a scheme:// should be treated as a hybrid url
        # which changes what characters get escaped.
        normalize_url = urlutils.normalize_url

        eq = self.assertEqual
        eq('file:///foo/', normalize_url(u'file:///foo/'))
        eq('file:///foo/%20', normalize_url(u'file:///foo/ '))
        eq('file:///foo/%20', normalize_url(u'file:///foo/%20'))
        # Don't escape reserved characters
        eq('file:///ab_c.d-e/%f:?g&h=i+j;k,L#M$',
            normalize_url('file:///ab_c.d-e/%f:?g&h=i+j;k,L#M$'))
        eq('http://ab_c.d-e/%f:?g&h=i+j;k,L#M$',
            normalize_url('http://ab_c.d-e/%f:?g&h=i+j;k,L#M$'))

        # Escape unicode characters, but not already escaped chars
        eq('http://host/ab/%C2%B5/%C2%B5',
            normalize_url(u'http://host/ab/%C2%B5/\xb5'))

        # Unescape characters that don't need to be escaped
        eq('http://host/~bob%2525-._',
                normalize_url('http://host/%7Ebob%2525%2D%2E%5F'))
        eq('http://host/~bob%2525-._',
                normalize_url(u'http://host/%7Ebob%2525%2D%2E%5F'))

        # Normalize verifies URLs when they are not unicode
        # (indicating they did not come from the user)
        self.assertRaises(InvalidURL, normalize_url, 'http://host/\xb5')
        self.assertRaises(InvalidURL, normalize_url, 'http://host/ ')

    def test_url_scheme_re(self):
        # Test paths that may be URLs
        def test_one(url, scheme_and_path):
            """Assert that _url_scheme_re correctly matches

            :param scheme_and_path: The (scheme, path) that should be matched
                can be None, to indicate it should not match
            """
            m = urlutils._url_scheme_re.match(url)
            if scheme_and_path is None:
                self.assertEqual(None, m)
            else:
                self.assertEqual(scheme_and_path[0], m.group('scheme'))
                self.assertEqual(scheme_and_path[1], m.group('path'))

        # Local paths
        test_one('/path', None)
        test_one('C:/path', None)
        test_one('../path/to/foo', None)
        test_one(u'../path/to/fo\xe5', None)

        # Real URLS
        test_one('http://host/path/', ('http', 'host/path/'))
        test_one('sftp://host/path/to/foo', ('sftp', 'host/path/to/foo'))
        test_one('file:///usr/bin', ('file', '/usr/bin'))
        test_one('file:///C:/Windows', ('file', '/C:/Windows'))
        test_one('file:///C|/Windows', ('file', '/C|/Windows'))
        test_one(u'readonly+sftp://host/path/\xe5', ('readonly+sftp', u'host/path/\xe5'))

        # Weird stuff
        # Can't have slashes or colons in the scheme
        test_one('/path/to/://foo', None)
        test_one('path:path://foo', None)
        # Must have more than one character for scheme
        test_one('C://foo', None)
        test_one('ab://foo', ('ab', 'foo'))

    def test_dirname(self):
        # Test bzrlib.urlutils.dirname()
        dirname = urlutils.dirname
        if sys.platform == 'win32':
            self.assertRaises(InvalidURL, dirname, 'file:///path/to/foo')
            self.assertEqual('file:///C|/', dirname('file:///C|/foo'))
            self.assertEqual('file:///C|/', dirname('file:///C|/'))
        else:
            self.assertEqual('file:///', dirname('file:///foo'))
            self.assertEqual('file:///', dirname('file:///'))

        self.assertEqual('http://host/path/to', dirname('http://host/path/to/foo'))
        self.assertEqual('http://host/path/to', dirname('http://host/path/to/foo/'))
        self.assertEqual('http://host/path/to/foo',
            dirname('http://host/path/to/foo/', exclude_trailing_slash=False))
        self.assertEqual('http://host/', dirname('http://host/path'))
        self.assertEqual('http://host/', dirname('http://host/'))
        self.assertEqual('http://host', dirname('http://host'))
        self.assertEqual('http:///nohost', dirname('http:///nohost/path'))

        self.assertEqual('random+scheme://user:pass@ahost:port/',
            dirname('random+scheme://user:pass@ahost:port/path'))
        self.assertEqual('random+scheme://user:pass@ahost:port/',
            dirname('random+scheme://user:pass@ahost:port/path/'))
        self.assertEqual('random+scheme://user:pass@ahost:port/',
            dirname('random+scheme://user:pass@ahost:port/'))

        # relative paths
        self.assertEqual('path/to', dirname('path/to/foo'))
        self.assertEqual('path/to', dirname('path/to/foo/'))
        self.assertEqual('path/to/foo',
            dirname('path/to/foo/', exclude_trailing_slash=False))
        self.assertEqual('path/..', dirname('path/../foo'))
        self.assertEqual('../path', dirname('../path/foo'))

    def test_join(self):
        def test(expected, *args):
            joined = urlutils.join(*args)
            self.assertEqual(expected, joined)

        # Test relative path joining
        test('foo', 'foo') # relative fragment with nothing is preserved.
        test('foo/bar', 'foo', 'bar')
        test('http://foo/bar', 'http://foo', 'bar')
        test('http://foo/bar', 'http://foo', '.', 'bar')
        test('http://foo/baz', 'http://foo', 'bar', '../baz')
        test('http://foo/bar/baz', 'http://foo', 'bar/baz')
        test('http://foo/baz', 'http://foo', 'bar/../baz')
        test('http://foo/baz', 'http://foo/bar/', '../baz')

        # Absolute paths
        test('http://foo', 'http://foo') # abs url with nothing is preserved.
        test('http://bar', 'http://foo', 'http://bar')
        test('sftp://bzr/foo', 'http://foo', 'bar', 'sftp://bzr/foo')
        test('file:///bar', 'foo', 'file:///bar')
        test('http://bar/', 'http://foo', 'http://bar/')
        test('http://bar/a', 'http://foo', 'http://bar/a')
        test('http://bar/a/', 'http://foo', 'http://bar/a/')

        # From a base path
        test('file:///foo', 'file:///', 'foo')
        test('file:///bar/foo', 'file:///bar/', 'foo')
        test('http://host/foo', 'http://host/', 'foo')
        test('http://host/', 'http://host', '')

        # Invalid joinings
        # Cannot go above root
        # Implicitly at root:
        self.assertRaises(InvalidURLJoin, urlutils.join,
                'http://foo', '../baz')
        self.assertRaises(InvalidURLJoin, urlutils.join,
                'http://foo', '/..')
        # Joining from a path explicitly under the root.
        self.assertRaises(InvalidURLJoin, urlutils.join,
                'http://foo/a', '../../b')

    def test_joinpath(self):
        def test(expected, *args):
            joined = urlutils.joinpath(*args)
            self.assertEqual(expected, joined)

        # Test a single element
        test('foo', 'foo')

        # Test relative path joining
        test('foo/bar', 'foo', 'bar')
        test('foo/bar', 'foo', '.', 'bar')
        test('foo/baz', 'foo', 'bar', '../baz')
        test('foo/bar/baz', 'foo', 'bar/baz')
        test('foo/baz', 'foo', 'bar/../baz')

        # Test joining to an absolute path
        test('/foo', '/foo')
        test('/foo', '/foo', '.')
        test('/foo/bar', '/foo', 'bar')
        test('/', '/foo', '..')

        # Test joining with an absolute path
        test('/bar', 'foo', '/bar')

        # Test joining to a path with a trailing slash
        test('foo/bar', 'foo/', 'bar')

        # Invalid joinings
        # Cannot go above root
        self.assertRaises(InvalidURLJoin, urlutils.joinpath, '/', '../baz')
        self.assertRaises(InvalidURLJoin, urlutils.joinpath, '/', '..')
        self.assertRaises(InvalidURLJoin, urlutils.joinpath, '/', '/..')

    def test_function_type(self):
        if sys.platform == 'win32':
            self.assertEqual(urlutils._win32_local_path_to_url, urlutils.local_path_to_url)
            self.assertEqual(urlutils._win32_local_path_from_url, urlutils.local_path_from_url)
        else:
            self.assertEqual(urlutils._posix_local_path_to_url, urlutils.local_path_to_url)
            self.assertEqual(urlutils._posix_local_path_from_url, urlutils.local_path_from_url)

    def test_posix_local_path_to_url(self):
        to_url = urlutils._posix_local_path_to_url
        self.assertEqual('file:///path/to/foo',
            to_url('/path/to/foo'))

        try:
            result = to_url(u'/path/to/r\xe4ksm\xf6rg\xe5s')
        except UnicodeError:
            raise TestSkipped("local encoding cannot handle unicode")

        self.assertEqual('file:///path/to/r%C3%A4ksm%C3%B6rg%C3%A5s', result)
        self.assertFalse(isinstance(result, unicode))

    def test_posix_local_path_from_url(self):
        from_url = urlutils._posix_local_path_from_url
        self.assertEqual('/path/to/foo',
            from_url('file:///path/to/foo'))
        self.assertEqual(u'/path/to/r\xe4ksm\xf6rg\xe5s',
            from_url('file:///path/to/r%C3%A4ksm%C3%B6rg%C3%A5s'))
        self.assertEqual(u'/path/to/r\xe4ksm\xf6rg\xe5s',
            from_url('file:///path/to/r%c3%a4ksm%c3%b6rg%c3%a5s'))
        self.assertEqual(u'/path/to/r\xe4ksm\xf6rg\xe5s',
            from_url('file://localhost/path/to/r%c3%a4ksm%c3%b6rg%c3%a5s'))

        self.assertRaises(InvalidURL, from_url, '/path/to/foo')
        self.assertRaises(
            InvalidURL, from_url,
            'file://remotehost/path/to/r%c3%a4ksm%c3%b6rg%c3%a5s')

    def test_win32_local_path_to_url(self):
        to_url = urlutils._win32_local_path_to_url
        self.assertEqual('file:///C:/path/to/foo',
            to_url('C:/path/to/foo'))
        # BOGUS: on win32, ntpath.abspath will strip trailing
        #       whitespace, so this will always fail
        #       Though under linux, it fakes abspath support
        #       and thus will succeed
        # self.assertEqual('file:///C:/path/to/foo%20',
        #     to_url('C:/path/to/foo '))
        self.assertEqual('file:///C:/path/to/f%20oo',
            to_url('C:/path/to/f oo'))

        self.assertEqual('file:///', to_url('/'))

        try:
            result = to_url(u'd:/path/to/r\xe4ksm\xf6rg\xe5s')
        except UnicodeError:
            raise TestSkipped("local encoding cannot handle unicode")

        self.assertEqual('file:///D:/path/to/r%C3%A4ksm%C3%B6rg%C3%A5s', result)
        self.assertFalse(isinstance(result, unicode))

    def test_win32_unc_path_to_url(self):
        to_url = urlutils._win32_local_path_to_url
        self.assertEqual('file://HOST/path',
            to_url(r'\\HOST\path'))
        self.assertEqual('file://HOST/path',
            to_url('//HOST/path'))

        try:
            result = to_url(u'//HOST/path/to/r\xe4ksm\xf6rg\xe5s')
        except UnicodeError:
            raise TestSkipped("local encoding cannot handle unicode")

        self.assertEqual('file://HOST/path/to/r%C3%A4ksm%C3%B6rg%C3%A5s', result)
        self.assertFalse(isinstance(result, unicode))

    def test_win32_local_path_from_url(self):
        from_url = urlutils._win32_local_path_from_url
        self.assertEqual('C:/path/to/foo',
            from_url('file:///C|/path/to/foo'))
        self.assertEqual(u'D:/path/to/r\xe4ksm\xf6rg\xe5s',
            from_url('file:///d|/path/to/r%C3%A4ksm%C3%B6rg%C3%A5s'))
        self.assertEqual(u'D:/path/to/r\xe4ksm\xf6rg\xe5s',
            from_url('file:///d:/path/to/r%c3%a4ksm%c3%b6rg%c3%a5s'))
        self.assertEqual('/', from_url('file:///'))

        self.assertRaises(InvalidURL, from_url, '/path/to/foo')
        # Not a valid _win32 url, no drive letter
        self.assertRaises(InvalidURL, from_url, 'file:///path/to/foo')

    def test_win32_unc_path_from_url(self):
        from_url = urlutils._win32_local_path_from_url
        self.assertEqual('//HOST/path', from_url('file://HOST/path'))
        # despite IE allows 2, 4, 5 and 6 slashes in URL to another machine
        # we want to use only 2 slashes
        # Firefox understand only 5 slashes in URL, but it's ugly
        self.assertRaises(InvalidURL, from_url, 'file:////HOST/path')
        self.assertRaises(InvalidURL, from_url, 'file://///HOST/path')
        self.assertRaises(InvalidURL, from_url, 'file://////HOST/path')
        # check for file://C:/ instead of file:///C:/
        self.assertRaises(InvalidURL, from_url, 'file://C:/path')

    def test_win32_extract_drive_letter(self):
        extract = urlutils._win32_extract_drive_letter
        self.assertEqual(('file:///C:', '/foo'), extract('file://', '/C:/foo'))
        self.assertEqual(('file:///d|', '/path'), extract('file://', '/d|/path'))
        self.assertRaises(InvalidURL, extract, 'file://', '/path')

    def test_split(self):
        # Test bzrlib.urlutils.split()
        split = urlutils.split
        if sys.platform == 'win32':
            self.assertRaises(InvalidURL, split, 'file:///path/to/foo')
            self.assertEqual(('file:///C|/', 'foo'), split('file:///C|/foo'))
            self.assertEqual(('file:///C:/', ''), split('file:///C:/'))
        else:
            self.assertEqual(('file:///', 'foo'), split('file:///foo'))
            self.assertEqual(('file:///', ''), split('file:///'))

        self.assertEqual(('http://host/path/to', 'foo'), split('http://host/path/to/foo'))
        self.assertEqual(('http://host/path/to', 'foo'), split('http://host/path/to/foo/'))
        self.assertEqual(('http://host/path/to/foo', ''),
            split('http://host/path/to/foo/', exclude_trailing_slash=False))
        self.assertEqual(('http://host/', 'path'), split('http://host/path'))
        self.assertEqual(('http://host/', ''), split('http://host/'))
        self.assertEqual(('http://host', ''), split('http://host'))
        self.assertEqual(('http:///nohost', 'path'), split('http:///nohost/path'))

        self.assertEqual(('random+scheme://user:pass@ahost:port/', 'path'),
            split('random+scheme://user:pass@ahost:port/path'))
        self.assertEqual(('random+scheme://user:pass@ahost:port/', 'path'),
            split('random+scheme://user:pass@ahost:port/path/'))
        self.assertEqual(('random+scheme://user:pass@ahost:port/', ''),
            split('random+scheme://user:pass@ahost:port/'))

        # relative paths
        self.assertEqual(('path/to', 'foo'), split('path/to/foo'))
        self.assertEqual(('path/to', 'foo'), split('path/to/foo/'))
        self.assertEqual(('path/to/foo', ''),
            split('path/to/foo/', exclude_trailing_slash=False))
        self.assertEqual(('path/..', 'foo'), split('path/../foo'))
        self.assertEqual(('../path', 'foo'), split('../path/foo'))

    def test_win32_strip_local_trailing_slash(self):
        strip = urlutils._win32_strip_local_trailing_slash
        self.assertEqual('file://', strip('file://'))
        self.assertEqual('file:///', strip('file:///'))
        self.assertEqual('file:///C', strip('file:///C'))
        self.assertEqual('file:///C:', strip('file:///C:'))
        self.assertEqual('file:///d|', strip('file:///d|'))
        self.assertEqual('file:///C:/', strip('file:///C:/'))
        self.assertEqual('file:///C:/a', strip('file:///C:/a/'))

    def test_strip_trailing_slash(self):
        sts = urlutils.strip_trailing_slash
        if sys.platform == 'win32':
            self.assertEqual('file:///C|/', sts('file:///C|/'))
            self.assertEqual('file:///C:/foo', sts('file:///C:/foo'))
            self.assertEqual('file:///C|/foo', sts('file:///C|/foo/'))
        else:
            self.assertEqual('file:///', sts('file:///'))
            self.assertEqual('file:///foo', sts('file:///foo'))
            self.assertEqual('file:///foo', sts('file:///foo/'))

        self.assertEqual('http://host/', sts('http://host/'))
        self.assertEqual('http://host/foo', sts('http://host/foo'))
        self.assertEqual('http://host/foo', sts('http://host/foo/'))

        # No need to fail just because the slash is missing
        self.assertEqual('http://host', sts('http://host'))
        # TODO: jam 20060502 Should this raise InvalidURL?
        self.assertEqual('file://', sts('file://'))

        self.assertEqual('random+scheme://user:pass@ahost:port/path',
            sts('random+scheme://user:pass@ahost:port/path'))
        self.assertEqual('random+scheme://user:pass@ahost:port/path',
            sts('random+scheme://user:pass@ahost:port/path/'))
        self.assertEqual('random+scheme://user:pass@ahost:port/',
            sts('random+scheme://user:pass@ahost:port/'))

        # Make sure relative paths work too
        self.assertEqual('path/to/foo', sts('path/to/foo'))
        self.assertEqual('path/to/foo', sts('path/to/foo/'))
        self.assertEqual('../to/foo', sts('../to/foo/'))
        self.assertEqual('path/../foo', sts('path/../foo/'))

    def test_unescape_for_display_utf8(self):
        # Test that URLs are converted to nice unicode strings for display
        def test(expected, url, encoding='utf-8'):
            disp_url = urlutils.unescape_for_display(url, encoding=encoding)
            self.assertIsInstance(disp_url, unicode)
            self.assertEqual(expected, disp_url)

        test('http://foo', 'http://foo')
        if sys.platform == 'win32':
            test('C:/foo/path', 'file:///C|/foo/path')
            test('C:/foo/path', 'file:///C:/foo/path')
        else:
            test('/foo/path', 'file:///foo/path')

        test('http://foo/%2Fbaz', 'http://foo/%2Fbaz')
        test(u'http://host/r\xe4ksm\xf6rg\xe5s',
             'http://host/r%C3%A4ksm%C3%B6rg%C3%A5s')

        # Make sure special escaped characters stay escaped
        test(u'http://host/%3B%2F%3F%3A%40%26%3D%2B%24%2C%23',
             'http://host/%3B%2F%3F%3A%40%26%3D%2B%24%2C%23')

        # Can we handle sections that don't have utf-8 encoding?
        test(u'http://host/%EE%EE%EE/r\xe4ksm\xf6rg\xe5s',
             'http://host/%EE%EE%EE/r%C3%A4ksm%C3%B6rg%C3%A5s')

        # Test encoding into output that can handle some characters
        test(u'http://host/%EE%EE%EE/r\xe4ksm\xf6rg\xe5s',
             'http://host/%EE%EE%EE/r%C3%A4ksm%C3%B6rg%C3%A5s',
             encoding='iso-8859-1')

        # This one can be encoded into utf8
        test(u'http://host/\u062c\u0648\u062c\u0648',
             'http://host/%d8%ac%d9%88%d8%ac%d9%88',
             encoding='utf-8')

        # This can't be put into 8859-1 and so stays as escapes
        test(u'http://host/%d8%ac%d9%88%d8%ac%d9%88',
             'http://host/%d8%ac%d9%88%d8%ac%d9%88',
             encoding='iso-8859-1')

    def test_escape(self):
        self.assertEqual('%25', urlutils.escape('%'))
        self.assertEqual('%C3%A5', urlutils.escape(u'\xe5'))
        self.assertFalse(isinstance(urlutils.escape(u'\xe5'), unicode))

    def test_escape_tildes(self):
        self.assertEqual('~foo', urlutils.escape('~foo'))

    def test_unescape(self):
        self.assertEqual('%', urlutils.unescape('%25'))
        self.assertEqual(u'\xe5', urlutils.unescape('%C3%A5'))

        self.assertRaises(InvalidURL, urlutils.unescape, u'\xe5')
        self.assertRaises(InvalidURL, urlutils.unescape, '\xe5')
        self.assertRaises(InvalidURL, urlutils.unescape, '%E5')

    def test_escape_unescape(self):
        self.assertEqual(u'\xe5', urlutils.unescape(urlutils.escape(u'\xe5')))
        self.assertEqual('%', urlutils.unescape(urlutils.escape('%')))

    def test_relative_url(self):
        def test(expected, base, other):
            result = urlutils.relative_url(base, other)
            self.assertEqual(expected, result)

        test('a', 'http://host/', 'http://host/a')
        test('http://entirely/different', 'sftp://host/branch',
                    'http://entirely/different')
        test('../person/feature', 'http://host/branch/mainline',
                    'http://host/branch/person/feature')
        test('..', 'http://host/branch', 'http://host/')
        test('http://host2/branch', 'http://host1/branch', 'http://host2/branch')
        test('.', 'http://host1/branch', 'http://host1/branch')
        test('../../../branch/2b', 'file:///home/jelmer/foo/bar/2b',
                    'file:///home/jelmer/branch/2b')
        test('../../branch/2b', 'sftp://host/home/jelmer/bar/2b',
                    'sftp://host/home/jelmer/branch/2b')
        test('../../branch/feature/%2b', 'http://host/home/jelmer/bar/%2b',
                    'http://host/home/jelmer/branch/feature/%2b')
        test('../../branch/feature/2b', 'http://host/home/jelmer/bar/2b/',
                    'http://host/home/jelmer/branch/feature/2b')
        # relative_url should preserve a trailing slash
        test('../../branch/feature/2b/', 'http://host/home/jelmer/bar/2b/',
                    'http://host/home/jelmer/branch/feature/2b/')
        test('../../branch/feature/2b/', 'http://host/home/jelmer/bar/2b',
                    'http://host/home/jelmer/branch/feature/2b/')

        # TODO: treat http://host as http://host/
        #       relative_url is typically called from a branch.base or
        #       transport.base which always ends with a /
        #test('a', 'http://host', 'http://host/a')
        test('http://host/a', 'http://host', 'http://host/a')
        #test('.', 'http://host', 'http://host/')
        test('http://host/', 'http://host', 'http://host/')
        #test('.', 'http://host/', 'http://host')
        test('http://host', 'http://host/', 'http://host')

        # On Windows file:///C:/path/to and file:///D:/other/path
        # should not use relative url over the non-existent '/' directory.
        if sys.platform == 'win32':
            # on the same drive
            test('../../other/path',
                'file:///C:/path/to', 'file:///C:/other/path')
            #~next two tests is failed, i.e. urlutils.relative_url expects
            #~to see normalized file URLs?
            #~test('../../other/path',
            #~    'file:///C:/path/to', 'file:///c:/other/path')
            #~test('../../other/path',
            #~    'file:///C:/path/to', 'file:///C|/other/path')

            # check UNC paths too
            test('../../other/path',
                'file://HOST/base/path/to', 'file://HOST/base/other/path')
            # on different drives
            test('file:///D:/other/path',
                'file:///C:/path/to', 'file:///D:/other/path')
            # TODO: strictly saying in UNC path //HOST/base is full analog
            # of drive letter for hard disk, and this situation is also
            # should be exception from rules. [bialix 20071221]


class TestCwdToURL(TestCaseInTempDir):
    """Test that local_path_to_url works base on the cwd"""

    def test_dot(self):
        # This test will fail if getcwd is not ascii
        os.mkdir('mytest')
        os.chdir('mytest')

        url = urlutils.local_path_to_url('.')
        self.assertEndsWith(url, '/mytest')

    def test_non_ascii(self):
        if win32utils.winver == 'Windows 98':
            raise TestSkipped('Windows 98 cannot handle unicode filenames')

        try:
            os.mkdir(u'dod\xe9')
        except UnicodeError:
            raise TestSkipped('cannot create unicode directory')

        os.chdir(u'dod\xe9')

        # On Mac OSX this directory is actually:
        #   u'/dode\u0301' => '/dode\xcc\x81
        # but we should normalize it back to
        #   u'/dod\xe9' => '/dod\xc3\xa9'
        url = urlutils.local_path_to_url('.')
        self.assertEndsWith(url, '/dod%C3%A9')


class TestDeriveToLocation(TestCase):
    """Test that the mapping of FROM_LOCATION to TO_LOCATION works."""

    def test_to_locations_derived_from_paths(self):
        derive = urlutils.derive_to_location
        self.assertEqual("bar", derive("bar"))
        self.assertEqual("bar", derive("../bar"))
        self.assertEqual("bar", derive("/foo/bar"))
        self.assertEqual("bar", derive("c:/foo/bar"))
        self.assertEqual("bar", derive("c:bar"))

    def test_to_locations_derived_from_urls(self):
        derive = urlutils.derive_to_location
        self.assertEqual("bar", derive("http://foo/bar"))
        self.assertEqual("bar", derive("bzr+ssh://foo/bar"))
        self.assertEqual("foo-bar", derive("lp:foo-bar"))


class TestRebaseURL(TestCase):
    """Test the behavior of rebase_url."""

    def test_non_relative(self):
        result = urlutils.rebase_url('file://foo', 'file://foo',
                                     'file://foo/bar')
        self.assertEqual('file://foo', result)
        result = urlutils.rebase_url('/foo', 'file://foo',
                                     'file://foo/bar')
        self.assertEqual('/foo', result)

    def test_different_ports(self):
        e = self.assertRaises(InvalidRebaseURLs, urlutils.rebase_url,
                              'foo', 'http://bar:80', 'http://bar:81')
        self.assertEqual(str(e), "URLs differ by more than path:"
                         " 'http://bar:80' and 'http://bar:81'")

    def test_different_hosts(self):
        e = self.assertRaises(InvalidRebaseURLs, urlutils.rebase_url,
                              'foo', 'http://bar', 'http://baz')
        self.assertEqual(str(e), "URLs differ by more than path: 'http://bar'"
                         " and 'http://baz'")

    def test_different_protocol(self):
        e = self.assertRaises(InvalidRebaseURLs, urlutils.rebase_url,
                              'foo', 'http://bar', 'ftp://bar')
        self.assertEqual(str(e), "URLs differ by more than path: 'http://bar'"
                         " and 'ftp://bar'")

    def test_rebase_success(self):
        self.assertEqual('../bar', urlutils.rebase_url('bar', 'http://baz/',
                         'http://baz/qux'))
        self.assertEqual('qux/bar', urlutils.rebase_url('bar',
                         'http://baz/qux', 'http://baz/'))
        self.assertEqual('.', urlutils.rebase_url('foo',
                         'http://bar/', 'http://bar/foo/'))
        self.assertEqual('qux/bar', urlutils.rebase_url('../bar',
                         'http://baz/qux/foo', 'http://baz/'))

    def test_determine_relative_path(self):
        self.assertEqual('../../baz/bar',
                         urlutils.determine_relative_path(
                         '/qux/quxx', '/baz/bar'))
        self.assertEqual('..',
                         urlutils.determine_relative_path(
                         '/bar/baz', '/bar'))
        self.assertEqual('baz',
                         urlutils.determine_relative_path(
                         '/bar', '/bar/baz'))
        self.assertEqual('.', urlutils.determine_relative_path(
                         '/bar', '/bar'))


class TestParseURL(TestCase):

    def test_parse_url(self):
        self.assertEqual(urlutils.parse_url('http://example.com:80/one'),
            ('http', None, None, 'example.com', 80, '/one'))
        self.assertEqual(urlutils.parse_url('http://[1:2:3::40]/one'),
                ('http', None, None, '1:2:3::40', None, '/one'))
        self.assertEqual(urlutils.parse_url('http://[1:2:3::40]:80/one'),
                ('http', None, None, '1:2:3::40', 80, '/one'))
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