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# Copyright (C) 2010 Canonical Ltd
 
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#
 
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# This program is free software; you can redistribute it and/or modify
 
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# it under the terms of the GNU General Public License as published by
 
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# the Free Software Foundation; either version 2 of the License, or
 
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# (at your option) any later version.
 
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#
 
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# This program is distributed in the hope that it will be useful,
 
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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# GNU General Public License for more details.
 
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#
 
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# You should have received a copy of the GNU General Public License
 
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# along with this program; if not, write to the Free Software
 
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 
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"""Test symlink support.
 
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"""
 
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import os
 
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from bzrlib import (
 
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    builtins,
 
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    osutils,
 
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    tests,
 
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    workingtree,
 
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    )
 
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from bzrlib.tests.per_workingtree import TestCaseWithWorkingTree
 
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class TestSmartAddTree(TestCaseWithWorkingTree):
 
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    # See eg <https://bugs.launchpad.net/bzr/+bug/192859>
 
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    _test_needs_features = [tests.SymlinkFeature]
 
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    def test_smart_add_symlink(self):
 
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        tree = self.make_branch_and_tree('tree')
 
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        self.build_tree_contents([
 
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            ('tree/link@', 'target'),
 
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            ])
 
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        tree.smart_add(['tree/link'])
 
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        self.assertIsNot(None, tree.path2id('link'))
 
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        self.assertIs(None, tree.path2id('target'))
 
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        self.assertEqual('symlink',
 
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            tree.kind(tree.path2id('link')))
 
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    def test_smart_add_symlink_pointing_outside(self):
 
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        tree = self.make_branch_and_tree('tree')
 
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        self.build_tree_contents([
 
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            ('tree/link@', '../../../../target'),
 
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            ])
 
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        tree.smart_add(['tree/link'])
 
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        self.assertIsNot(None, tree.path2id('link'))
 
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        self.assertIs(None, tree.path2id('target'))
 
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        self.assertEqual('symlink',
 
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            tree.kind(tree.path2id('link')))
 
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    def test_add_file_under_symlink(self):
 
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        # similar to 
 
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        # https://bugs.launchpad.net/bzr/+bug/192859/comments/3
 
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        tree = self.make_branch_and_tree('tree')
 
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        self.build_tree_contents([
 
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            ('tree/link@', 'dir'),
 
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            ('tree/dir/',),
 
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            ('tree/dir/file', 'content'),
 
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            ])
 
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        self.assertEquals(
 
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            tree.smart_add(['tree/link/file']),
 
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            ([u'dir', u'dir/file'], {}))
 
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        # should add the actual parent directory, not the apparent parent
 
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        # (which is actually a symlink)
 
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        self.assertTrue(tree.path2id('dir/file'))
 
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        self.assertTrue(tree.path2id('dir'))
 
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        self.assertIs(None, tree.path2id('link'))
 
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        self.assertIs(None, tree.path2id('link/file'))
 
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class TestKindChanges(TestCaseWithWorkingTree):
 
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    _test_needs_features = [tests.SymlinkFeature]
 
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    def test_symlink_changes_to_dir(self):
 
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        # <https://bugs.launchpad.net/bzr/+bug/192859>:
 
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        # we had some past problems with the workingtree remembering for too
 
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        # long what kind of object was at a particular name; we really
 
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        # shouldn't do that.  Operating on the dirstate through passing
 
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        # inventory deltas rather than mutating the inventory largely avoids
 
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        # that.
 
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        tree = self.make_branch_and_tree('tree')
 
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        self.build_tree_contents([
 
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            ('tree/a@', 'target')])
 
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        tree.smart_add(['tree/a'])
 
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        tree.commit('add symlink')
 
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        os.unlink('tree/a')
 
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        self.build_tree_contents([
 
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            ('tree/a/',),
 
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            ('tree/a/f', 'content'),
 
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            ])
 
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        tree.smart_add(['tree/a/f'])
 
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        tree.commit('change to dir')
 
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        tree.lock_read()
 
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        self.addCleanup(tree.unlock)
 
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        self.assertEquals([], list(tree.iter_changes(tree.basis_tree())))
 
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        self.assertEquals(
 
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            ['a', 'a/f'], sorted(info[0] for info in tree.list_files()))
 
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    def test_dir_changes_to_symlink(self):
 
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        # <https://bugs.launchpad.net/bzr/+bug/192859>:
 
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        # we had some past problems with the workingtree remembering for too
 
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        # long what kind of object was at a particular name; we really
 
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        # shouldn't do that.  Operating on the dirstate through passing
 
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        # inventory deltas rather than mutating the inventory largely avoids
 
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        # that.
 
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        tree = self.make_branch_and_tree('tree')
 
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        self.build_tree_contents([
 
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            ('tree/a/',),
 
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            ('tree/a/file', 'content'),
 
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            ])
 
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        tree.smart_add(['tree/a'])
 
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        tree.commit('add dir')
 
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        osutils.rmtree('tree/a')
 
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        self.build_tree_contents([
 
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            ('tree/a@', 'target'),
 
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            ])
 
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        tree.commit('change to symlink')
 
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class TestOpenTree(TestCaseWithWorkingTree):
 
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    _test_needs_features = [tests.SymlinkFeature]
 
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    def test_open_containing_through_symlink(self):
 
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        self.make_test_tree()
 
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        self.check_open_containing('link/content', 'tree', 'content')
 
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        self.check_open_containing('link/sublink', 'tree', 'sublink')
 
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        # this next one is a bit debatable, but arguably it's better that
 
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        # open_containing is only concerned with opening the tree 
 
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        # and then you can deal with symlinks along the way if you want
 
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        self.check_open_containing('link/sublink/subcontent', 'tree',
 
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            'sublink/subcontent')
 
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    def check_open_containing(self, to_open, expected_tree_name,
 
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        expected_relpath):
 
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        wt, relpath = workingtree.WorkingTree.open_containing(to_open)
 
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        self.assertEquals(relpath, expected_relpath)
 
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        self.assertEndsWith(wt.basedir, expected_tree_name)
 
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    def test_tree_files(self):
 
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        # not strictly a WorkingTree method, but it should be
 
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        # probably the root cause for
 
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        # <https://bugs.launchpad.net/bzr/+bug/128562>
 
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        self.make_test_tree()
 
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        self.check_tree_files(['tree/outerlink'],
 
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            'tree', ['outerlink'])
 
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        self.check_tree_files(['link/outerlink'],
 
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            'tree', ['outerlink'])
 
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        self.check_tree_files(['link/sublink/subcontent'],
 
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            'tree', ['subdir/subcontent'])
 
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    def check_tree_files(self, to_open, expected_tree, expect_paths):
 
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        tree, relpaths = workingtree.WorkingTree.open_containing_paths(to_open)
 
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        self.assertEndsWith(tree.basedir, expected_tree)
 
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        self.assertEquals(expect_paths, relpaths)
 
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    def make_test_tree(self):
 
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        tree = self.make_branch_and_tree('tree')
 
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        self.build_tree_contents([
 
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            ('link@', 'tree'),
 
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            ('tree/outerlink@', '/not/there'),
 
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            ('tree/content', 'hello'),
 
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            ('tree/sublink@', 'subdir'),
 
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            ('tree/subdir/',),
 
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            ('tree/subdir/subcontent', 'subcontent stuff')
 
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            ])