import unittest

from test import test_support

import posixpath, os

from posixpath import realpath, abspath, join, dirname, basename

# An absolute path to a temporary filename for testing. We can't rely on TESTFN

# being an absolute path, so we need this.

ABSTFN = abspath(test_support.TESTFN)

class PosixPathTest(unittest.TestCase):

    def assertIs(self, a, b):

        self.assert_(a is b)

    def test_normcase(self):

        # Check that normcase() is idempotent

        p = "FoO/./BaR"

        p = posixpath.normcase(p)

        self.assertEqual(p, posixpath.normcase(p))

        self.assertRaises(TypeError, posixpath.normcase)

    def test_join(self):

        self.assertEqual(posixpath.join("/foo", "bar", "/bar", "baz"), "/bar/baz")

        self.assertEqual(posixpath.join("/foo", "bar", "baz"), "/foo/bar/baz")

        self.assertEqual(posixpath.join("/foo/", "bar/", "baz/"), "/foo/bar/baz/")

        self.assertRaises(TypeError, posixpath.join)

    def test_splitdrive(self):

        self.assertEqual(posixpath.splitdrive("/foo/bar"), ("", "/foo/bar"))

        self.assertRaises(TypeError, posixpath.splitdrive)

    def test_split(self):

        self.assertEqual(posixpath.split("/foo/bar"), ("/foo", "bar"))

        self.assertEqual(posixpath.split("/"), ("/", ""))

        self.assertEqual(posixpath.split("foo"), ("", "foo"))

        self.assertEqual(posixpath.split("////foo"), ("////", "foo"))

        self.assertEqual(posixpath.split("//foo//bar"), ("//foo", "bar"))

        self.assertRaises(TypeError, posixpath.split)

    def test_splitext(self):

        self.assertEqual(posixpath.splitext("foo.ext"), ("foo", ".ext"))

        self.assertEqual(posixpath.splitext("/foo/foo.ext"), ("/foo/foo", ".ext"))

        self.assertEqual(posixpath.splitext(".ext"), ("", ".ext"))

        self.assertEqual(posixpath.splitext("/foo.ext/foo"), ("/foo.ext/foo", ""))

        self.assertEqual(posixpath.splitext("foo.ext/"), ("foo.ext/", ""))

        self.assertEqual(posixpath.splitext(""), ("", ""))

        self.assertEqual(posixpath.splitext("foo.bar.ext"), ("foo.bar", ".ext"))

        self.assertRaises(TypeError, posixpath.splitext)

    def test_isabs(self):

        self.assertIs(posixpath.isabs(""), False)

        self.assertIs(posixpath.isabs("/"), True)

        self.assertIs(posixpath.isabs("/foo"), True)

        self.assertIs(posixpath.isabs("/foo/bar"), True)

        self.assertIs(posixpath.isabs("foo/bar"), False)

        self.assertRaises(TypeError, posixpath.isabs)

    def test_splitdrive(self):

        self.assertEqual(posixpath.splitdrive("/foo/bar"), ("", "/foo/bar"))

        self.assertRaises(TypeError, posixpath.splitdrive)

    def test_basename(self):

        self.assertEqual(posixpath.basename("/foo/bar"), "bar")

        self.assertEqual(posixpath.basename("/"), "")

        self.assertEqual(posixpath.basename("foo"), "foo")

        self.assertEqual(posixpath.basename("////foo"), "foo")

        self.assertEqual(posixpath.basename("//foo//bar"), "bar")

        self.assertRaises(TypeError, posixpath.basename)

    def test_dirname(self):

        self.assertEqual(posixpath.dirname("/foo/bar"), "/foo")

        self.assertEqual(posixpath.dirname("/"), "/")

        self.assertEqual(posixpath.dirname("foo"), "")

        self.assertEqual(posixpath.dirname("////foo"), "////")

        self.assertEqual(posixpath.dirname("//foo//bar"), "//foo")

        self.assertRaises(TypeError, posixpath.dirname)

    def test_commonprefix(self):

        self.assertEqual(

            posixpath.commonprefix([]),

            ""

        )

        self.assertEqual(

            posixpath.commonprefix(["/home/swenson/spam", "/home/swen/spam"]),

            "/home/swen"

        )

        self.assertEqual(

            posixpath.commonprefix(["/home/swen/spam", "/home/swen/eggs"]),

            "/home/swen/"

        )

        self.assertEqual(

            posixpath.commonprefix(["/home/swen/spam", "/home/swen/spam"]),

            "/home/swen/spam"

        )

    def test_getsize(self):

        f = open(test_support.TESTFN, "wb")

        try:

            f.write("foo")

            f.close()

            self.assertEqual(posixpath.getsize(test_support.TESTFN), 3)

        finally:

            if not f.closed:

                f.close()

            os.remove(test_support.TESTFN)

    def test_time(self):

        f = open(test_support.TESTFN, "wb")

        try:

            f.write("foo")

            f.close()

            f = open(test_support.TESTFN, "ab")

            f.write("bar")

            f.close()

            f = open(test_support.TESTFN, "rb")

            d = f.read()

            f.close()

            self.assertEqual(d, "foobar")

            self.assert_(

                posixpath.getctime(test_support.TESTFN) <=

                posixpath.getmtime(test_support.TESTFN)

            )

        finally:

            if not f.closed:

                f.close()

            os.remove(test_support.TESTFN)

    def test_islink(self):

        self.assertIs(posixpath.islink(test_support.TESTFN + "1"), False)

        f = open(test_support.TESTFN + "1", "wb")

        try:

            f.write("foo")

            f.close()

            self.assertIs(posixpath.islink(test_support.TESTFN + "1"), False)

            if hasattr(os, "symlink"):

                os.symlink(test_support.TESTFN + "1", test_support.TESTFN + "2")

                self.assertIs(posixpath.islink(test_support.TESTFN + "2"), True)

                os.remove(test_support.TESTFN + "1")

                self.assertIs(posixpath.islink(test_support.TESTFN + "2"), True)

                self.assertIs(posixpath.exists(test_support.TESTFN + "2"), False)

                self.assertIs(posixpath.lexists(test_support.TESTFN + "2"), True)

        finally:

            if not f.close():

                f.close()

            try:

                os.remove(test_support.TESTFN + "1")

            except os.error:

                pass

            try:

                os.remove(test_support.TESTFN + "2")

            except os.error:

                pass

        self.assertRaises(TypeError, posixpath.islink)

    def test_exists(self):

        self.assertIs(posixpath.exists(test_support.TESTFN), False)

        f = open(test_support.TESTFN, "wb")

        try:

            f.write("foo")

            f.close()

            self.assertIs(posixpath.exists(test_support.TESTFN), True)

            self.assertIs(posixpath.lexists(test_support.TESTFN), True)

        finally:

            if not f.close():

                f.close()

            try:

                os.remove(test_support.TESTFN)

            except os.error:

                pass

        self.assertRaises(TypeError, posixpath.exists)

    def test_isdir(self):

        self.assertIs(posixpath.isdir(test_support.TESTFN), False)

        f = open(test_support.TESTFN, "wb")

        try:

            f.write("foo")

            f.close()

            self.assertIs(posixpath.isdir(test_support.TESTFN), False)

            os.remove(test_support.TESTFN)

            os.mkdir(test_support.TESTFN)

            self.assertIs(posixpath.isdir(test_support.TESTFN), True)

            os.rmdir(test_support.TESTFN)

        finally:

            if not f.close():

                f.close()

            try:

                os.remove(test_support.TESTFN)

            except os.error:

                pass

            try:

                os.rmdir(test_support.TESTFN)

            except os.error:

                pass

        self.assertRaises(TypeError, posixpath.isdir)

    def test_isfile(self):

        self.assertIs(posixpath.isfile(test_support.TESTFN), False)

        f = open(test_support.TESTFN, "wb")

        try:

            f.write("foo")

            f.close()

            self.assertIs(posixpath.isfile(test_support.TESTFN), True)

            os.remove(test_support.TESTFN)

            os.mkdir(test_support.TESTFN)

            self.assertIs(posixpath.isfile(test_support.TESTFN), False)

            os.rmdir(test_support.TESTFN)

        finally:

            if not f.close():

                f.close()

            try:

                os.remove(test_support.TESTFN)

            except os.error:

                pass

            try:

                os.rmdir(test_support.TESTFN)

            except os.error:

                pass

        self.assertRaises(TypeError, posixpath.isdir)

        def test_samefile(self):

            f = open(test_support.TESTFN + "1", "wb")

            try:

                f.write("foo")

                f.close()

                self.assertIs(

                    posixpath.samefile(

                        test_support.TESTFN + "1",

                        test_support.TESTFN + "1"

                    ),

                    True

                )

                # If we don't have links, assume that os.stat doesn't return resonable

                # inode information and thus, that samefile() doesn't work

                if hasattr(os, "symlink"):

                    os.symlink(

                        test_support.TESTFN + "1",

                        test_support.TESTFN + "2"

                    )

                    self.assertIs(

                        posixpath.samefile(

                            test_support.TESTFN + "1",

                            test_support.TESTFN + "2"

                        ),

                        True

                    )

                    os.remove(test_support.TESTFN + "2")

                    f = open(test_support.TESTFN + "2", "wb")

                    f.write("bar")

                    f.close()

                    self.assertIs(

                        posixpath.samefile(

                            test_support.TESTFN + "1",

                            test_support.TESTFN + "2"

                        ),

                        False

                    )

            finally:

                if not f.close():

                    f.close()

                try:

                    os.remove(test_support.TESTFN + "1")

                except os.error:

                    pass

                try:

                    os.remove(test_support.TESTFN + "2")

                except os.error:

                    pass

            self.assertRaises(TypeError, posixpath.samefile)

    def test_samestat(self):

        f = open(test_support.TESTFN + "1", "wb")

        try:

            f.write("foo")

            f.close()

            self.assertIs(

                posixpath.samestat(

                    os.stat(test_support.TESTFN + "1"),

                    os.stat(test_support.TESTFN + "1")

                ),

                True

            )

            # If we don't have links, assume that os.stat() doesn't return resonable

            # inode information and thus, that samefile() doesn't work

            if hasattr(os, "symlink"):

                if hasattr(os, "symlink"):

                    os.symlink(test_support.TESTFN + "1", test_support.TESTFN + "2")

                    self.assertIs(

                        posixpath.samestat(

                            os.stat(test_support.TESTFN + "1"),

                            os.stat(test_support.TESTFN + "2")

                        ),

                        True

                    )

                    os.remove(test_support.TESTFN + "2")

                f = open(test_support.TESTFN + "2", "wb")

                f.write("bar")

                f.close()

                self.assertIs(

                    posixpath.samestat(

                        os.stat(test_support.TESTFN + "1"),

                        os.stat(test_support.TESTFN + "2")

                    ),

                    False

                )

        finally:

            if not f.close():

                f.close()

            try:

                os.remove(test_support.TESTFN + "1")

            except os.error:

                pass

            try:

                os.remove(test_support.TESTFN + "2")

            except os.error:

                pass

        self.assertRaises(TypeError, posixpath.samestat)

    def test_ismount(self):

        self.assertIs(posixpath.ismount("/"), True)

        self.assertRaises(TypeError, posixpath.ismount)

    def test_expanduser(self):

        self.assertEqual(posixpath.expanduser("foo"), "foo")

        try:

            import pwd

        except ImportError:

            pass

        else:

            self.assert_(isinstance(posixpath.expanduser("~/"), basestring))

            # if home directory == root directory, this test makes no sense

            if posixpath.expanduser("~") != '/':

                self.assertEqual(

                    posixpath.expanduser("~") + "/",

                    posixpath.expanduser("~/")

                )

            self.assert_(isinstance(posixpath.expanduser("~root/"), basestring))

            self.assert_(isinstance(posixpath.expanduser("~foo/"), basestring))

        self.assertRaises(TypeError, posixpath.expanduser)

    def test_expandvars(self):

        oldenv = os.environ.copy()

        try:

            os.environ.clear()

            os.environ["foo"] = "bar"

            os.environ["{foo"] = "baz1"

            os.environ["{foo}"] = "baz2"

            self.assertEqual(posixpath.expandvars("foo"), "foo")

            self.assertEqual(posixpath.expandvars("$foo bar"), "bar bar")

            self.assertEqual(posixpath.expandvars("${foo}bar"), "barbar")

            self.assertEqual(posixpath.expandvars("$[foo]bar"), "$[foo]bar")

            self.assertEqual(posixpath.expandvars("$bar bar"), "$bar bar")

            self.assertEqual(posixpath.expandvars("$?bar"), "$?bar")

            self.assertEqual(posixpath.expandvars("${foo}bar"), "barbar")

            self.assertEqual(posixpath.expandvars("$foo}bar"), "bar}bar")

            self.assertEqual(posixpath.expandvars("${foo"), "${foo")

            self.assertEqual(posixpath.expandvars("${{foo}}"), "baz1}")

        finally:

            os.environ.clear()

            os.environ.update(oldenv)

        self.assertRaises(TypeError, posixpath.expandvars)

    def test_normpath(self):

        self.assertEqual(posixpath.normpath(""), ".")

        self.assertEqual(posixpath.normpath("/"), "/")

        self.assertEqual(posixpath.normpath("//"), "//")

        self.assertEqual(posixpath.normpath("///"), "/")

        self.assertEqual(posixpath.normpath("///foo/.//bar//"), "/foo/bar")

        self.assertEqual(posixpath.normpath("///foo/.//bar//.//..//.//baz"), "/foo/baz")

        self.assertEqual(posixpath.normpath("///..//./foo/.//bar"), "/foo/bar")

        self.assertRaises(TypeError, posixpath.normpath)

    def test_abspath(self):

        self.assert_("foo" in posixpath.abspath("foo"))

        self.assertRaises(TypeError, posixpath.abspath)

    def test_realpath(self):

        self.assert_("foo" in realpath("foo"))

        self.assertRaises(TypeError, posixpath.realpath)

    if hasattr(os, "symlink"):

        def test_realpath_basic(self):

            # Basic operation.

            try:

                os.symlink(ABSTFN+"1", ABSTFN)

                self.assertEqual(realpath(ABSTFN), ABSTFN+"1")

            finally:

                self.safe_remove(ABSTFN)

        def test_realpath_symlink_loops(self):

            # Bug #930024, return the path unchanged if we get into an infinite

            # symlink loop.

            try:

                old_path = abspath('.')

                os.symlink(ABSTFN, ABSTFN)

                self.assertEqual(realpath(ABSTFN), ABSTFN)

                os.symlink(ABSTFN+"1", ABSTFN+"2")

                os.symlink(ABSTFN+"2", ABSTFN+"1")

                self.assertEqual(realpath(ABSTFN+"1"), ABSTFN+"1")

                self.assertEqual(realpath(ABSTFN+"2"), ABSTFN+"2")

                # Test using relative path as well.

                os.chdir(dirname(ABSTFN))

                self.assertEqual(realpath(basename(ABSTFN)), ABSTFN)

            finally:

                os.chdir(old_path)

                self.safe_remove(ABSTFN)

                self.safe_remove(ABSTFN+"1")

                self.safe_remove(ABSTFN+"2")

        def test_realpath_resolve_parents(self):

            # We also need to resolve any symlinks in the parents of a relative

            # path passed to realpath. E.g.: current working directory is

            # /usr/doc with 'doc' being a symlink to /usr/share/doc. We call

            # realpath("a"). This should return /usr/share/doc/a/.

            try:

                old_path = abspath('.')

                os.mkdir(ABSTFN)

                os.mkdir(ABSTFN + "/y")

                os.symlink(ABSTFN + "/y", ABSTFN + "/k")

                os.chdir(ABSTFN + "/k")

                self.assertEqual(realpath("a"), ABSTFN + "/y/a")

            finally:

                os.chdir(old_path)

                self.safe_remove(ABSTFN + "/k")

                self.safe_rmdir(ABSTFN + "/y")

                self.safe_rmdir(ABSTFN)

        def test_realpath_resolve_before_normalizing(self):

            # Bug #990669: Symbolic links should be resolved before we

            # normalize the path. E.g.: if we have directories 'a', 'k' and 'y'

            # in the following hierarchy:

            # a/k/y

            #

            # and a symbolic link 'link-y' pointing to 'y' in directory 'a',

            # then realpath("link-y/..") should return 'k', not 'a'.

            try:

                old_path = abspath('.')

                os.mkdir(ABSTFN)

                os.mkdir(ABSTFN + "/k")

                os.mkdir(ABSTFN + "/k/y")

                os.symlink(ABSTFN + "/k/y", ABSTFN + "/link-y")

                # Absolute path.

                self.assertEqual(realpath(ABSTFN + "/link-y/.."), ABSTFN + "/k")

                # Relative path.

                os.chdir(dirname(ABSTFN))

                self.assertEqual(realpath(basename(ABSTFN) + "/link-y/.."), ABSTFN + "/k")

            finally:

                os.chdir(old_path)

                self.safe_remove(ABSTFN + "/link-y")

                self.safe_rmdir(ABSTFN + "/k/y")

                self.safe_rmdir(ABSTFN + "/k")

                self.safe_rmdir(ABSTFN)

        def test_realpath_resolve_first(self):

            # Bug #1213894: The first component of the path, if not absolute,

            # must be resolved too.

            try:

                old_path = abspath('.')

                os.mkdir(ABSTFN)

                os.mkdir(ABSTFN + "/k")

                os.symlink(ABSTFN, ABSTFN + "link")

                os.chdir(dirname(ABSTFN))

                base = basename(ABSTFN)

                self.assertEqual(realpath(base + "link"), ABSTFN)

                self.assertEqual(realpath(base + "link/k"), ABSTFN + "/k")

            finally:

                os.chdir(old_path)

                self.safe_remove(ABSTFN + "link")

                self.safe_rmdir(ABSTFN + "/k")

                self.safe_rmdir(ABSTFN)

        # Convenience functions for removing temporary files.

        def pass_os_error(self, func, filename):

            try: func(filename)

            except OSError: pass

        def safe_remove(self, filename):

            self.pass_os_error(os.remove, filename)

        def safe_rmdir(self, dirname):

            self.pass_os_error(os.rmdir, dirname)

def test_main():

    test_support.run_unittest(PosixPathTest)

if __name__=="__main__":

    test_main()