~bzr-pqm/bzr/bzr.dev

# Copyright (C) 2005, 2006 Canonical Ltd

# Authors:  Robert Collins <robert.collins@canonical.com>

#

# 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

from cStringIO import StringIO

import os

from bzrlib import (

    bzrdir,

    conflicts,

    errors,

    workingtree,

    )

from bzrlib.branch import Branch

from bzrlib.bzrdir import BzrDir

from bzrlib.lockdir import LockDir

from bzrlib.mutabletree import needs_tree_write_lock

from bzrlib.tests import TestCase, TestCaseWithTransport, TestSkipped

from bzrlib.transport import get_transport

from bzrlib.workingtree import (

    TreeEntry,

    TreeDirectory,

    TreeFile,

    TreeLink,

    )

class TestTreeDirectory(TestCaseWithTransport):

    def test_kind_character(self):

        self.assertEqual(TreeDirectory().kind_character(), '/')

class TestTreeEntry(TestCaseWithTransport):

    def test_kind_character(self):

        self.assertEqual(TreeEntry().kind_character(), '???')

class TestTreeFile(TestCaseWithTransport):

    def test_kind_character(self):

        self.assertEqual(TreeFile().kind_character(), '')

class TestTreeLink(TestCaseWithTransport):

    def test_kind_character(self):

        self.assertEqual(TreeLink().kind_character(), '')

class TestDefaultFormat(TestCaseWithTransport):

    def test_get_set_default_format(self):

        old_format = workingtree.WorkingTreeFormat.get_default_format()

        # default is 3

        self.assertTrue(isinstance(old_format, workingtree.WorkingTreeFormat3))

        workingtree.WorkingTreeFormat.set_default_format(SampleTreeFormat())

        try:

            # the default branch format is used by the meta dir format

            # which is not the default bzrdir format at this point

            dir = bzrdir.BzrDirMetaFormat1().initialize('.')

            dir.create_repository()

            dir.create_branch()

            result = dir.create_workingtree()

            self.assertEqual(result, 'A tree')

        finally:

            workingtree.WorkingTreeFormat.set_default_format(old_format)

        self.assertEqual(old_format, workingtree.WorkingTreeFormat.get_default_format())

class SampleTreeFormat(workingtree.WorkingTreeFormat):

    """A sample format

    this format is initializable, unsupported to aid in testing the 

    open and open_downlevel routines.

    """

    def get_format_string(self):

        """See WorkingTreeFormat.get_format_string()."""

        return "Sample tree format."

    def initialize(self, a_bzrdir, revision_id=None, from_branch=None,

                   accelerator_tree=None, hardlink=False):

        """Sample branches cannot be created."""

        t = a_bzrdir.get_workingtree_transport(self)

        t.put_bytes('format', self.get_format_string())

        return 'A tree'

    def is_supported(self):

        return False

    def open(self, transport, _found=False):

        return "opened tree."

class TestWorkingTreeFormat(TestCaseWithTransport):

    """Tests for the WorkingTreeFormat facility."""

    def test_find_format(self):

        # is the right format object found for a working tree?

        # create a branch with a few known format objects.

        self.build_tree(["foo/", "bar/"])

        def check_format(format, url):

            dir = format._matchingbzrdir.initialize(url)

            dir.create_repository()

            dir.create_branch()

            format.initialize(dir)

            t = get_transport(url)

            found_format = workingtree.WorkingTreeFormat.find_format(dir)

            self.failUnless(isinstance(found_format, format.__class__))

        check_format(workingtree.WorkingTreeFormat3(), "bar")

    def test_find_format_no_tree(self):

        dir = bzrdir.BzrDirMetaFormat1().initialize('.')

        self.assertRaises(errors.NoWorkingTree,

                          workingtree.WorkingTreeFormat.find_format,

                          dir)

    def test_find_format_unknown_format(self):

        dir = bzrdir.BzrDirMetaFormat1().initialize('.')

        dir.create_repository()

        dir.create_branch()

        SampleTreeFormat().initialize(dir)

        self.assertRaises(errors.UnknownFormatError,

                          workingtree.WorkingTreeFormat.find_format,

                          dir)

    def test_register_unregister_format(self):

        format = SampleTreeFormat()

        # make a control dir

        dir = bzrdir.BzrDirMetaFormat1().initialize('.')

        dir.create_repository()

        dir.create_branch()

        # make a branch

        format.initialize(dir)

        # register a format for it.

        workingtree.WorkingTreeFormat.register_format(format)

        # which branch.Open will refuse (not supported)

        self.assertRaises(errors.UnsupportedFormatError, workingtree.WorkingTree.open, '.')

        # but open_downlevel will work

        self.assertEqual(format.open(dir), workingtree.WorkingTree.open_downlevel('.'))

        # unregister the format

        workingtree.WorkingTreeFormat.unregister_format(format)

class TestWorkingTreeFormat3(TestCaseWithTransport):

    """Tests specific to WorkingTreeFormat3."""

    def test_disk_layout(self):

        control = bzrdir.BzrDirMetaFormat1().initialize(self.get_url())

        control.create_repository()

        control.create_branch()

        tree = workingtree.WorkingTreeFormat3().initialize(control)

        # we want:

        # format 'Bazaar-NG Working Tree format 3'

        # inventory = blank inventory

        # pending-merges = ''

        # stat-cache = ??

        # no inventory.basis yet

        t = control.get_workingtree_transport(None)

        self.assertEqualDiff('Bazaar-NG Working Tree format 3',

                             t.get('format').read())

        self.assertEqualDiff(t.get('inventory').read(), 

                              '<inventory format="5">\n'

                              '</inventory>\n',

                             )

        self.assertEqualDiff('### bzr hashcache v5\n',

                             t.get('stat-cache').read())

        self.assertFalse(t.has('inventory.basis'))

        # no last-revision file means 'None' or 'NULLREVISION'

        self.assertFalse(t.has('last-revision'))

        # TODO RBC 20060210 do a commit, check the inventory.basis is created 

        # correctly and last-revision file becomes present.

    def test_uses_lockdir(self):

        """WorkingTreeFormat3 uses its own LockDir:

            - lock is a directory

            - when the WorkingTree is locked, LockDir can see that

        """

        t = self.get_transport()

        url = self.get_url()

        dir = bzrdir.BzrDirMetaFormat1().initialize(url)

        repo = dir.create_repository()

        branch = dir.create_branch()

        try:

            tree = workingtree.WorkingTreeFormat3().initialize(dir)

        except errors.NotLocalUrl:

            raise TestSkipped('Not a local URL')

        self.assertIsDirectory('.bzr', t)

        self.assertIsDirectory('.bzr/checkout', t)

        self.assertIsDirectory('.bzr/checkout/lock', t)

        our_lock = LockDir(t, '.bzr/checkout/lock')

        self.assertEquals(our_lock.peek(), None)

        tree.lock_write()

        self.assertTrue(our_lock.peek())

        tree.unlock()

        self.assertEquals(our_lock.peek(), None)

    def test_missing_pending_merges(self):

        control = bzrdir.BzrDirMetaFormat1().initialize(self.get_url())

        control.create_repository()

        control.create_branch()

        tree = workingtree.WorkingTreeFormat3().initialize(control)

        tree._transport.delete("pending-merges")

        self.assertEqual([], tree.get_parent_ids())

class TestFormat2WorkingTree(TestCaseWithTransport):

    """Tests that are specific to format 2 trees."""

    def create_format2_tree(self, url):

        return self.make_branch_and_tree(

            url, format=bzrdir.BzrDirFormat6())

    def test_conflicts(self):

        # test backwards compatability

        tree = self.create_format2_tree('.')

        self.assertRaises(errors.UnsupportedOperation, tree.set_conflicts,

                          None)

        file('lala.BASE', 'wb').write('labase')

        expected = conflicts.ContentsConflict('lala')

        self.assertEqual(list(tree.conflicts()), [expected])

        file('lala', 'wb').write('la')

        tree.add('lala', 'lala-id')

        expected = conflicts.ContentsConflict('lala', file_id='lala-id')

        self.assertEqual(list(tree.conflicts()), [expected])

        file('lala.THIS', 'wb').write('lathis')

        file('lala.OTHER', 'wb').write('laother')

        # When "text conflict"s happen, stem, THIS and OTHER are text

        expected = conflicts.TextConflict('lala', file_id='lala-id')

        self.assertEqual(list(tree.conflicts()), [expected])

        os.unlink('lala.OTHER')

        os.mkdir('lala.OTHER')

        expected = conflicts.ContentsConflict('lala', file_id='lala-id')

        self.assertEqual(list(tree.conflicts()), [expected])

class InstrumentedTree(object):

    """A instrumented tree to check the needs_tree_write_lock decorator."""

    def __init__(self):

        self._locks = []

    def lock_tree_write(self):

        self._locks.append('t')

    @needs_tree_write_lock

    def method_with_tree_write_lock(self, *args, **kwargs):

        """A lock_tree_write decorated method that returns its arguments."""

        return args, kwargs

    @needs_tree_write_lock

    def method_that_raises(self):

        """This method causes an exception when called with parameters.

        This allows the decorator code to be checked - it should still call

        unlock.

        """

    def unlock(self):

        self._locks.append('u')

class TestInstrumentedTree(TestCase):

    def test_needs_tree_write_lock(self):

        """@needs_tree_write_lock should be semantically transparent."""

        tree = InstrumentedTree()

        self.assertEqual(

            'method_with_tree_write_lock',

            tree.method_with_tree_write_lock.__name__)

        self.assertEqual(

            "A lock_tree_write decorated method that returns its arguments.",

            tree.method_with_tree_write_lock.__doc__)

        args = (1, 2, 3)

        kwargs = {'a':'b'}

        result = tree.method_with_tree_write_lock(1,2,3, a='b')

        self.assertEqual((args, kwargs), result)

        self.assertEqual(['t', 'u'], tree._locks)

        self.assertRaises(TypeError, tree.method_that_raises, 'foo')

        self.assertEqual(['t', 'u', 't', 'u'], tree._locks)

class TestRevert(TestCaseWithTransport):

    def test_revert_conflicts_recursive(self):

        this_tree = self.make_branch_and_tree('this-tree')

        self.build_tree_contents([('this-tree/foo/',),

                                  ('this-tree/foo/bar', 'bar')])

        this_tree.add(['foo', 'foo/bar'])

        this_tree.commit('created foo/bar')

        other_tree = this_tree.bzrdir.sprout('other-tree').open_workingtree()

        self.build_tree_contents([('other-tree/foo/bar', 'baz')])

        other_tree.commit('changed bar')

        self.build_tree_contents([('this-tree/foo/bar', 'qux')])

        this_tree.commit('changed qux')

        this_tree.merge_from_branch(other_tree.branch)

        self.assertEqual(1, len(this_tree.conflicts()))

        this_tree.revert(['foo'])

        self.assertEqual(0, len(this_tree.conflicts()))

class TestAutoResolve(TestCaseWithTransport):

    def test_auto_resolve(self):

        base = self.make_branch_and_tree('base')

        self.build_tree_contents([('base/hello', 'Hello')])

        base.add('hello', 'hello_id')

        base.commit('Hello')

        other = base.bzrdir.sprout('other').open_workingtree()

        self.build_tree_contents([('other/hello', 'hELLO')])

        other.commit('Case switch')

        this = base.bzrdir.sprout('this').open_workingtree()

        self.failUnlessExists('this/hello')

        self.build_tree_contents([('this/hello', 'Hello World')])

        this.commit('Add World')

        this.merge_from_branch(other.branch)

        self.assertEqual([conflicts.TextConflict('hello', None, 'hello_id')],

                         this.conflicts())

        this.auto_resolve()

        self.assertEqual([conflicts.TextConflict('hello', None, 'hello_id')],

                         this.conflicts())

        self.build_tree_contents([('this/hello', '<<<<<<<')])

        this.auto_resolve()

        self.assertEqual([conflicts.TextConflict('hello', None, 'hello_id')],

                         this.conflicts())

        self.build_tree_contents([('this/hello', '=======')])

        this.auto_resolve()

        self.assertEqual([conflicts.TextConflict('hello', None, 'hello_id')],

                         this.conflicts())

        self.build_tree_contents([('this/hello', '\n>>>>>>>')])

        remaining, resolved = this.auto_resolve()

        self.assertEqual([conflicts.TextConflict('hello', None, 'hello_id')],

                         this.conflicts())

        self.assertEqual([], resolved)

        self.build_tree_contents([('this/hello', 'hELLO wORLD')])

        remaining, resolved = this.auto_resolve()

        self.assertEqual([], this.conflicts())

        self.assertEqual([conflicts.TextConflict('hello', None, 'hello_id')],

                         resolved)

        self.failIfExists('this/hello.BASE')

    def test_auto_resolve_dir(self):

        tree = self.make_branch_and_tree('tree')

        self.build_tree(['tree/hello/'])

        tree.add('hello', 'hello-id')

        file_conflict = conflicts.TextConflict('file', None, 'hello-id')

        tree.set_conflicts(conflicts.ConflictList([file_conflict]))

        tree.auto_resolve()

class TestFindTrees(TestCaseWithTransport):

    def test_find_trees(self):

        self.make_branch_and_tree('foo')

        self.make_branch_and_tree('foo/bar')

        # Sticking a tree inside a control dir is heinous, so let's skip it

        self.make_branch_and_tree('foo/.bzr/baz')

        self.make_branch('qux')

        trees = workingtree.WorkingTree.find_trees('.')

        self.assertEqual(2, len(list(trees)))