~bzr-pqm/bzr/bzr.dev

# Copyright (C) 2005-2012, 2016 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

from bzrlib import (

    bzrdir,

    conflicts,

    errors,

    transport,

    workingtree,

    workingtree_3,

    workingtree_4,

    )

from bzrlib.lock import write_locked

from bzrlib.lockdir import LockDir

from bzrlib.mutabletree import needs_tree_write_lock

from bzrlib.tests import TestCase, TestCaseWithTransport, TestSkipped

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.format_registry.get_default()

        # default is 6

        self.assertTrue(isinstance(old_format, workingtree_4.WorkingTreeFormat6))

        workingtree.format_registry.set_default(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.format_registry.set_default(old_format)

        self.assertEqual(old_format, workingtree.format_registry.get_default())

    def test_from_string(self):

        self.assertIsInstance(

            SampleTreeFormat.from_string("Sample tree format."),

            SampleTreeFormat)

        self.assertRaises(AssertionError,

            SampleTreeFormat.from_string, "Different format string.")

    def test_get_set_default_format_by_key(self):

        old_format = workingtree.format_registry.get_default()

        # default is 6

        format = SampleTreeFormat()

        workingtree.format_registry.register(format)

        self.addCleanup(workingtree.format_registry.remove, format)

        self.assertTrue(isinstance(old_format, workingtree_4.WorkingTreeFormat6))

        workingtree.format_registry.set_default_key(format.get_format_string())

        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.format_registry.set_default_key(

                old_format.get_format_string())

        self.assertEqual(old_format, workingtree.format_registry.get_default())

    def test_open(self):

        tree = self.make_branch_and_tree('.')

        open_direct = workingtree.WorkingTree.open('.')

        self.assertEqual(tree.basedir, open_direct.basedir)

        open_no_args = workingtree.WorkingTree.open()

        self.assertEqual(tree.basedir, open_no_args.basedir)

    def test_open_containing(self):

        tree = self.make_branch_and_tree('.')

        open_direct, relpath = workingtree.WorkingTree.open_containing('.')

        self.assertEqual(tree.basedir, open_direct.basedir)

        self.assertEqual('', relpath)

        open_no_args, relpath = workingtree.WorkingTree.open_containing()

        self.assertEqual(tree.basedir, open_no_args.basedir)

        self.assertEqual('', relpath)

        open_subdir, relpath = workingtree.WorkingTree.open_containing('subdir')

        self.assertEqual(tree.basedir, open_subdir.basedir)

        self.assertEqual('subdir', relpath)

class SampleTreeFormat(workingtree.WorkingTreeFormatMetaDir):

    """A sample format

    this format is initializable, unsupported to aid in testing the

    open and open_downlevel routines.

    """

    @classmethod

    def get_format_string(cls):

        """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 SampleExtraTreeFormat(workingtree.WorkingTreeFormat):

    """A sample format that does not support use in a metadir.

    """

    def get_format_string(self):

        # Not usable in a metadir, so no format string

        return None

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

                   accelerator_tree=None, hardlink=False):

        raise NotImplementedError(self.initialize)

    def is_supported(self):

        return False

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

        raise NotImplementedError(self.open)

class TestWorkingTreeFormat(TestCaseWithTransport):

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

    def test_find_format_string(self):

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

        branch = self.make_branch('branch')

        self.assertRaises(errors.NoWorkingTree,

            workingtree.WorkingTreeFormatMetaDir.find_format_string, branch.bzrdir)

        transport = branch.bzrdir.get_workingtree_transport(None)

        transport.mkdir('.')

        transport.put_bytes("format", "some format name")

        # The format does not have to be known by Bazaar,

        # find_format_string just retrieves the name

        self.assertEqual("some format name",

            workingtree.WorkingTreeFormatMetaDir.find_format_string(branch.bzrdir))

    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 = transport.get_transport(url)

            found_format = workingtree.WorkingTreeFormatMetaDir.find_format(dir)

            self.assertIsInstance(found_format, format.__class__)

        check_format(workingtree_3.WorkingTreeFormat3(), "bar")

    def test_find_format_no_tree(self):

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

        self.assertRaises(errors.NoWorkingTree,

                          workingtree.WorkingTreeFormatMetaDir.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.WorkingTreeFormatMetaDir.find_format,

                          dir)

    def test_find_format_with_features(self):

        tree = self.make_branch_and_tree('.', format='2a')

        tree.update_feature_flags({"name": "necessity"})

        found_format = workingtree.WorkingTreeFormatMetaDir.find_format(

            tree.bzrdir)

        self.assertIsInstance(found_format, workingtree.WorkingTreeFormat)

        self.assertEqual(found_format.features.get("name"), "necessity")

        self.assertRaises(errors.MissingFeature, found_format.check_support_status,

            True)

        self.addCleanup(workingtree.WorkingTreeFormatMetaDir.unregister_feature,

            "name")

        workingtree.WorkingTreeFormatMetaDir.register_feature("name")

        found_format.check_support_status(True)

class TestWorkingTreeIterEntriesByDir_wSubtrees(TestCaseWithTransport):

    def make_simple_tree(self):

        tree = self.make_branch_and_tree('tree', format='development-subtree')

        self.build_tree(['tree/a/', 'tree/a/b/', 'tree/a/b/c'])

        tree.set_root_id('root-id')

        tree.add(['a', 'a/b', 'a/b/c'], ['a-id', 'b-id', 'c-id'])

        tree.commit('initial')

        return tree

    def test_just_directory(self):

        tree = self.make_simple_tree()

        self.assertEqual([('directory', 'root-id'),

                          ('directory', 'a-id'),

                          ('directory', 'b-id'),

                          ('file', 'c-id')],

                         [(ie.kind, ie.file_id)

                          for path, ie in tree.iter_entries_by_dir()])

        subtree = self.make_branch_and_tree('tree/a/b')

        self.assertEqual([('tree-reference', 'b-id')],

                         [(ie.kind, ie.file_id)

                          for path, ie in tree.iter_entries_by_dir(['b-id'])])

    def test_direct_subtree(self):

        tree = self.make_simple_tree()

        subtree = self.make_branch_and_tree('tree/a/b')

        self.assertEqual([('directory', 'root-id'),

                          ('directory', 'a-id'),

                          ('tree-reference', 'b-id')],

                         [(ie.kind, ie.file_id)

                          for path, ie in tree.iter_entries_by_dir()])

    def test_indirect_subtree(self):

        tree = self.make_simple_tree()

        subtree = self.make_branch_and_tree('tree/a')

        self.assertEqual([('directory', 'root-id'),

                          ('tree-reference', 'a-id')],

                         [(ie.kind, ie.file_id)

                          for path, ie in tree.iter_entries_by_dir()])

class TestWorkingTreeFormatRegistry(TestCase):

    def setUp(self):

        super(TestWorkingTreeFormatRegistry, self).setUp()

        self.registry = workingtree.WorkingTreeFormatRegistry()

    def test_register_unregister_format(self):

        format = SampleTreeFormat()

        self.registry.register(format)

        self.assertEqual(format, self.registry.get("Sample tree format."))

        self.registry.remove(format)

        self.assertRaises(KeyError, self.registry.get, "Sample tree format.")

    def test_get_all(self):

        format = SampleTreeFormat()

        self.assertEqual([], self.registry._get_all())

        self.registry.register(format)

        self.assertEqual([format], self.registry._get_all())

    def test_register_extra(self):

        format = SampleExtraTreeFormat()

        self.assertEqual([], self.registry._get_all())

        self.registry.register_extra(format)

        self.assertEqual([format], self.registry._get_all())

    def test_register_extra_lazy(self):

        self.assertEqual([], self.registry._get_all())

        self.registry.register_extra_lazy("bzrlib.tests.test_workingtree",

            "SampleExtraTreeFormat")

        formats = self.registry._get_all()

        self.assertEqual(1, len(formats))

        self.assertIsInstance(formats[0], SampleExtraTreeFormat)

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_3.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_3.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.assertEqual(our_lock.peek(), None)

        tree.lock_write()

        self.assertTrue(our_lock.peek())

        tree.unlock()

        self.assertEqual(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_3.WorkingTreeFormat3().initialize(control)

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

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

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.assertDocstring(

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

            tree.method_with_tree_write_lock)

        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.assertPathExists('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', 'hello_id')],

                         this.conflicts())

        this.auto_resolve()

        self.assertEqual([conflicts.TextConflict('hello', 'hello_id')],

                         this.conflicts())

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

        this.auto_resolve()

        self.assertEqual([conflicts.TextConflict('hello', 'hello_id')],

                         this.conflicts())

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

        this.auto_resolve()

        self.assertEqual([conflicts.TextConflict('hello', 'hello_id')],

                         this.conflicts())

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

        remaining, resolved = this.auto_resolve()

        self.assertEqual([conflicts.TextConflict('hello', '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', 'hello_id')],

                         resolved)

        self.assertPathDoesNotExist('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', '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)))

class TestStoredUncommitted(TestCaseWithTransport):

    def store_uncommitted(self):

        tree = self.make_branch_and_tree('tree')

        tree.commit('get root in there')

        self.build_tree_contents([('tree/file', 'content')])

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

        tree.store_uncommitted()

        return tree

    def test_store_uncommitted(self):

        self.store_uncommitted()

        self.assertPathDoesNotExist('tree/file')

    def test_store_uncommitted_no_change(self):

        tree = self.make_branch_and_tree('tree')

        tree.commit('get root in there')

        tree.store_uncommitted()

        self.assertIs(None, tree.branch.get_unshelver(tree))

    def test_restore_uncommitted(self):

        with write_locked(self.store_uncommitted()) as tree:

            tree.restore_uncommitted()

            self.assertPathExists('tree/file')

            self.assertIs(None, tree.branch.get_unshelver(tree))

    def test_restore_uncommitted_none(self):

        tree = self.make_branch_and_tree('tree')

        tree.restore_uncommitted()