~bzr-pqm/bzr/bzr.dev

# Copyright (C) 2006 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

"""Tests for Tree and InterTree."""

from bzrlib import errors

from bzrlib.tests import TestCaseWithTransport

from bzrlib.tree import InterTree

class TestInterTree(TestCaseWithTransport):

    def test_revision_tree_revision_tree(self):

        # we should have an InterTree registered for RevisionTree to

        # RevisionTree.

        tree = self.make_branch_and_tree('.')

        rev_id = tree.commit('first post')

        rev_id2 = tree.commit('second post', allow_pointless=True)

        rev_tree = tree.branch.repository.revision_tree(rev_id)

        rev_tree2 = tree.branch.repository.revision_tree(rev_id2)

        optimiser = InterTree.get(rev_tree, rev_tree2)

        self.assertIsInstance(optimiser, InterTree)

        optimiser = InterTree.get(rev_tree2, rev_tree)

        self.assertIsInstance(optimiser, InterTree)

    def test_working_tree_revision_tree(self):

        # we should have an InterTree available for WorkingTree to 

        # RevisionTree.

        tree = self.make_branch_and_tree('.')

        rev_id = tree.commit('first post')

        rev_tree = tree.branch.repository.revision_tree(rev_id)

        optimiser = InterTree.get(rev_tree, tree)

        self.assertIsInstance(optimiser, InterTree)

        optimiser = InterTree.get(tree, rev_tree)

        self.assertIsInstance(optimiser, InterTree)

    def test_working_tree_working_tree(self):

        # we should have an InterTree available for WorkingTree to 

        # WorkingTree.

        tree = self.make_branch_and_tree('1')

        tree2 = self.make_branch_and_tree('2')

        optimiser = InterTree.get(tree, tree2)

        self.assertIsInstance(optimiser, InterTree)

        optimiser = InterTree.get(tree2, tree)

        self.assertIsInstance(optimiser, InterTree)

class RecordingOptimiser(InterTree):

    calls = []

    def compare(self, want_unchanged=False, specific_files=None,

        extra_trees=None, require_versioned=False, include_root=False,

        want_unversioned=False):

        self.calls.append(

            ('compare', self.source, self.target, want_unchanged,

             specific_files, extra_trees, require_versioned, 

             include_root, want_unversioned)

            )

    @classmethod

    def is_compatible(klass, source, target):

        return True

class TestTree(TestCaseWithTransport):

    def test_compare_calls_InterTree_compare(self):

        """This test tests the way Tree.compare() uses InterTree."""

        old_optimisers = InterTree._optimisers

        try:

            InterTree._optimisers = []

            RecordingOptimiser.calls = []

            InterTree.register_optimiser(RecordingOptimiser)

            tree = self.make_branch_and_tree('1')

            tree2 = self.make_branch_and_tree('2')

            # do a series of calls:

            # trivial usage

            tree.changes_from(tree2)

            # pass in all optional arguments by position

            tree.changes_from(tree2, 'unchanged', 'specific', 'extra', 

                              'require', True)

            # pass in all optional arguments by keyword

            tree.changes_from(tree2,

                specific_files='specific',

                want_unchanged='unchanged',

                extra_trees='extra',

                require_versioned='require',

                include_root=True,

                want_unversioned=True,

                )

        finally:

            InterTree._optimisers = old_optimisers

        self.assertEqual(

            [

             ('compare', tree2, tree, False, None, None, False, False, False),

             ('compare', tree2, tree, 'unchanged', 'specific', 'extra',

              'require', True, False),

             ('compare', tree2, tree, 'unchanged', 'specific', 'extra',

              'require', True, True),

            ], RecordingOptimiser.calls)

    def test_changes_from_with_root(self):

        """Ensure the include_root option does what's expected."""

        wt = self.make_branch_and_tree('.')

        delta = wt.changes_from(wt.basis_tree())

        self.assertEqual(len(delta.added), 0)

        delta = wt.changes_from(wt.basis_tree(), wt, include_root=True)

        self.assertEqual(len(delta.added), 1)

        self.assertEqual(delta.added[0][0], '')

    def test_changes_from_with_require_versioned(self):

        """Ensure the require_versioned option does what's expected."""

        wt = self.make_branch_and_tree('.')

        self.build_tree(['known_file', 'unknown_file'])

        wt.add('known_file')

        self.assertRaises(errors.PathsNotVersionedError,

            wt.changes_from, wt.basis_tree(), wt, specific_files=['known_file',

            'unknown_file'], require_versioned=True)

        # we need to pass a known file with an unknown file to get this to

        # fail when expected.

        delta = wt.changes_from(wt.basis_tree(), wt, 

            specific_files=['known_file', 'unknown_file'] ,

            require_versioned=False)

        self.assertEqual(len(delta.added), 1)