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import ntpath
import os
from test.test_support import TestFailed
from test import test_support, test_genericpath
import unittest


def tester(fn, wantResult):
    fn = fn.replace("\\", "\\\\")
    gotResult = eval(fn)
    if wantResult != gotResult:
        raise TestFailed, "%s should return: %s but returned: %s" \
              %(str(fn), str(wantResult), str(gotResult))


class TestNtpath(unittest.TestCase):
    def test_splitext(self):
        tester('ntpath.splitext("foo.ext")', ('foo', '.ext'))
        tester('ntpath.splitext("/foo/foo.ext")', ('/foo/foo', '.ext'))
        tester('ntpath.splitext(".ext")', ('.ext', ''))
        tester('ntpath.splitext("\\foo.ext\\foo")', ('\\foo.ext\\foo', ''))
        tester('ntpath.splitext("foo.ext\\")', ('foo.ext\\', ''))
        tester('ntpath.splitext("")', ('', ''))
        tester('ntpath.splitext("foo.bar.ext")', ('foo.bar', '.ext'))
        tester('ntpath.splitext("xx/foo.bar.ext")', ('xx/foo.bar', '.ext'))
        tester('ntpath.splitext("xx\\foo.bar.ext")', ('xx\\foo.bar', '.ext'))
        tester('ntpath.splitext("c:a/b\\c.d")', ('c:a/b\\c', '.d'))

    def test_splitdrive(self):
        tester('ntpath.splitdrive("c:\\foo\\bar")',
               ('c:', '\\foo\\bar'))
        tester('ntpath.splitdrive("c:/foo/bar")',
               ('c:', '/foo/bar'))

    def test_splitunc(self):
        tester('ntpath.splitunc("\\\\conky\\mountpoint\\foo\\bar")',
               ('\\\\conky\\mountpoint', '\\foo\\bar'))
        tester('ntpath.splitunc("//conky/mountpoint/foo/bar")',
               ('//conky/mountpoint', '/foo/bar'))

    def test_split(self):
        tester('ntpath.split("c:\\foo\\bar")', ('c:\\foo', 'bar'))
        tester('ntpath.split("\\\\conky\\mountpoint\\foo\\bar")',
               ('\\\\conky\\mountpoint\\foo', 'bar'))

        tester('ntpath.split("c:\\")', ('c:\\', ''))
        tester('ntpath.split("\\\\conky\\mountpoint\\")',
               ('\\\\conky\\mountpoint', ''))

        tester('ntpath.split("c:/")', ('c:/', ''))
        tester('ntpath.split("//conky/mountpoint/")', ('//conky/mountpoint', ''))

    def test_isabs(self):
        tester('ntpath.isabs("c:\\")', 1)
        tester('ntpath.isabs("\\\\conky\\mountpoint\\")', 1)
        tester('ntpath.isabs("\\foo")', 1)
        tester('ntpath.isabs("\\foo\\bar")', 1)

    def test_commonprefix(self):
        tester('ntpath.commonprefix(["/home/swenson/spam", "/home/swen/spam"])',
               "/home/swen")
        tester('ntpath.commonprefix(["\\home\\swen\\spam", "\\home\\swen\\eggs"])',
               "\\home\\swen\\")
        tester('ntpath.commonprefix(["/home/swen/spam", "/home/swen/spam"])',
               "/home/swen/spam")

    def test_join(self):
        tester('ntpath.join("")', '')
        tester('ntpath.join("", "", "")', '')
        tester('ntpath.join("a")', 'a')
        tester('ntpath.join("/a")', '/a')
        tester('ntpath.join("\\a")', '\\a')
        tester('ntpath.join("a:")', 'a:')
        tester('ntpath.join("a:", "b")', 'a:b')
        tester('ntpath.join("a:", "/b")', 'a:/b')
        tester('ntpath.join("a:", "\\b")', 'a:\\b')
        tester('ntpath.join("a", "/b")', '/b')
        tester('ntpath.join("a", "\\b")', '\\b')
        tester('ntpath.join("a", "b", "c")', 'a\\b\\c')
        tester('ntpath.join("a\\", "b", "c")', 'a\\b\\c')
        tester('ntpath.join("a", "b\\", "c")', 'a\\b\\c')
        tester('ntpath.join("a", "b", "\\c")', '\\c')
        tester('ntpath.join("d:\\", "\\pleep")', 'd:\\pleep')
        tester('ntpath.join("d:\\", "a", "b")', 'd:\\a\\b')
        tester("ntpath.join('c:', '/a')", 'c:/a')
        tester("ntpath.join('c:/', '/a')", 'c:/a')
        tester("ntpath.join('c:/a', '/b')", '/b')
        tester("ntpath.join('c:', 'd:/')", 'd:/')
        tester("ntpath.join('c:/', 'd:/')", 'd:/')
        tester("ntpath.join('c:/', 'd:/a/b')", 'd:/a/b')

        tester("ntpath.join('')", '')
        tester("ntpath.join('', '', '', '', '')", '')
        tester("ntpath.join('a')", 'a')
        tester("ntpath.join('', 'a')", 'a')
        tester("ntpath.join('', '', '', '', 'a')", 'a')
        tester("ntpath.join('a', '')", 'a\\')
        tester("ntpath.join('a', '', '', '', '')", 'a\\')
        tester("ntpath.join('a\\', '')", 'a\\')
        tester("ntpath.join('a\\', '', '', '', '')", 'a\\')

    def test_normpath(self):
        tester("ntpath.normpath('A//////././//.//B')", r'A\B')
        tester("ntpath.normpath('A/./B')", r'A\B')
        tester("ntpath.normpath('A/foo/../B')", r'A\B')
        tester("ntpath.normpath('C:A//B')", r'C:A\B')
        tester("ntpath.normpath('D:A/./B')", r'D:A\B')
        tester("ntpath.normpath('e:A/foo/../B')", r'e:A\B')

        tester("ntpath.normpath('C:///A//B')", r'C:\A\B')
        tester("ntpath.normpath('D:///A/./B')", r'D:\A\B')
        tester("ntpath.normpath('e:///A/foo/../B')", r'e:\A\B')

        tester("ntpath.normpath('..')", r'..')
        tester("ntpath.normpath('.')", r'.')
        tester("ntpath.normpath('')", r'.')
        tester("ntpath.normpath('/')", '\\')
        tester("ntpath.normpath('c:/')", 'c:\\')
        tester("ntpath.normpath('/../.././..')", '\\')
        tester("ntpath.normpath('c:/../../..')", 'c:\\')
        tester("ntpath.normpath('../.././..')", r'..\..\..')
        tester("ntpath.normpath('K:../.././..')", r'K:..\..\..')
        tester("ntpath.normpath('C:////a/b')", r'C:\a\b')
        tester("ntpath.normpath('//machine/share//a/b')", r'\\machine\share\a\b')

        tester("ntpath.normpath('\\\\.\\NUL')", r'\\.\NUL')
        tester("ntpath.normpath('\\\\?\\D:/XY\\Z')", r'\\?\D:/XY\Z')

    def test_expandvars(self):
        with test_support.EnvironmentVarGuard() as env:
            env.clear()
            env["foo"] = "bar"
            env["{foo"] = "baz1"
            env["{foo}"] = "baz2"
            tester('ntpath.expandvars("foo")', "foo")
            tester('ntpath.expandvars("$foo bar")', "bar bar")
            tester('ntpath.expandvars("${foo}bar")', "barbar")
            tester('ntpath.expandvars("$[foo]bar")', "$[foo]bar")
            tester('ntpath.expandvars("$bar bar")', "$bar bar")
            tester('ntpath.expandvars("$?bar")', "$?bar")
            tester('ntpath.expandvars("${foo}bar")', "barbar")
            tester('ntpath.expandvars("$foo}bar")', "bar}bar")
            tester('ntpath.expandvars("${foo")', "${foo")
            tester('ntpath.expandvars("${{foo}}")', "baz1}")
            tester('ntpath.expandvars("$foo$foo")', "barbar")
            tester('ntpath.expandvars("$bar$bar")', "$bar$bar")
            tester('ntpath.expandvars("%foo% bar")', "bar bar")
            tester('ntpath.expandvars("%foo%bar")', "barbar")
            tester('ntpath.expandvars("%foo%%foo%")', "barbar")
            tester('ntpath.expandvars("%%foo%%foo%foo%")', "%foo%foobar")
            tester('ntpath.expandvars("%?bar%")', "%?bar%")
            tester('ntpath.expandvars("%foo%%bar")', "bar%bar")
            tester('ntpath.expandvars("\'%foo%\'%bar")', "\'%foo%\'%bar")

    def test_abspath(self):
        # ntpath.abspath() can only be used on a system with the "nt" module
        # (reasonably), so we protect this test with "import nt".  This allows
        # the rest of the tests for the ntpath module to be run to completion
        # on any platform, since most of the module is intended to be usable
        # from any platform.
        # XXX this needs more tests
        try:
            import nt
        except ImportError:
            # check that the function is there even if we are not on Windows
            ntpath.abspath
        else:
            tester('ntpath.abspath("C:\\")', "C:\\")

    def test_relpath(self):
        currentdir = os.path.split(os.getcwd())[-1]
        tester('ntpath.relpath("a")', 'a')
        tester('ntpath.relpath(os.path.abspath("a"))', 'a')
        tester('ntpath.relpath("a/b")', 'a\\b')
        tester('ntpath.relpath("../a/b")', '..\\a\\b')
        tester('ntpath.relpath("a", "../b")', '..\\'+currentdir+'\\a')
        tester('ntpath.relpath("a/b", "../c")', '..\\'+currentdir+'\\a\\b')
        tester('ntpath.relpath("a", "b/c")', '..\\..\\a')
        tester('ntpath.relpath("//conky/mountpoint/a", "//conky/mountpoint/b/c")', '..\\..\\a')
        tester('ntpath.relpath("a", "a")', '.')
        tester('ntpath.relpath("/foo/bar/bat", "/x/y/z")', '..\\..\\..\\foo\\bar\\bat')
        tester('ntpath.relpath("/foo/bar/bat", "/foo/bar")', 'bat')
        tester('ntpath.relpath("/foo/bar/bat", "/")', 'foo\\bar\\bat')
        tester('ntpath.relpath("/", "/foo/bar/bat")', '..\\..\\..')
        tester('ntpath.relpath("/foo/bar/bat", "/x")', '..\\foo\\bar\\bat')
        tester('ntpath.relpath("/x", "/foo/bar/bat")', '..\\..\\..\\x')
        tester('ntpath.relpath("/", "/")', '.')
        tester('ntpath.relpath("/a", "/a")', '.')
        tester('ntpath.relpath("/a/b", "/a/b")', '.')
        tester('ntpath.relpath("c:/foo", "C:/FOO")', '.')


class NtCommonTest(test_genericpath.CommonTest):
    pathmodule = ntpath
    attributes = ['relpath', 'splitunc']


def test_main():
    test_support.run_unittest(TestNtpath, NtCommonTest)


if __name__ == "__main__":
    unittest.main()




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