# Copyright (C) 2007 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

"""Test that all Tree's implement get_symlink_target"""

import os

from bzrlib import (
    errors,
    osutils,
    tests,
    )
from bzrlib.tests.tree_implementations import TestCaseWithTree


class TestGetSymlinkTarget(TestCaseWithTree):

    def get_tree_with_symlinks(self):
        if not osutils.has_symlinks():
            raise tests.TestSkipped('platform does not support symlinks.')

        tree = self.make_branch_and_tree('tree')
        os.symlink('foo', 'tree/link')
        os.symlink('../bar', 'tree/rel_link')
        os.symlink('/baz/bing', 'tree/abs_link')

        tree.add(['link', 'rel_link', 'abs_link'],
                 ['link-id', 'rel-link-id', 'abs-link-id'])
        return self._convert_tree(tree)

    def test_get_symlink_target(self):
        tree = self.get_tree_with_symlinks()
        tree.lock_read()
        self.addCleanup(tree.unlock)
        self.assertEqual('foo', tree.get_symlink_target('link-id'))
        self.assertEqual('../bar', tree.get_symlink_target('rel-link-id'))
        self.assertEqual('/baz/bing', tree.get_symlink_target('abs-link-id'))
