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bzrlib/tests/test_tree.py
 
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# Copyright (C) 2006 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
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"""Tests for Tree and InterTree."""
 
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from bzrlib.tests import TestCaseWithTransport
 
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from bzrlib.tree import InterTree
 
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class TestInterTree(TestCaseWithTransport):
 
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    def test_revision_tree_revision_tree(self):
 
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        # we should have an InterTree registered for RevisionTree to
 
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        # RevisionTree.
 
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        tree = self.make_branch_and_tree('.')
 
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        rev_id = tree.commit('first post')
 
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        rev_id2 = tree.commit('second post', allow_pointless=True)
 
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        rev_tree = tree.branch.repository.revision_tree(rev_id)
 
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        rev_tree2 = tree.branch.repository.revision_tree(rev_id2)
 
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        optimiser = InterTree.get(rev_tree, rev_tree2)
 
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        self.assertIsInstance(optimiser, InterTree)
 
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        optimiser = InterTree.get(rev_tree2, rev_tree)
 
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        self.assertIsInstance(optimiser, InterTree)
 
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    def test_working_tree_revision_tree(self):
 
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        # we should have an InterTree available for WorkingTree to 
 
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        # RevisionTree.
 
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        tree = self.make_branch_and_tree('.')
 
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        rev_id = tree.commit('first post')
 
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        rev_tree = tree.branch.repository.revision_tree(rev_id)
 
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        optimiser = InterTree.get(rev_tree, tree)
 
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        self.assertIsInstance(optimiser, InterTree)
 
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        optimiser = InterTree.get(tree, rev_tree)
 
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        self.assertIsInstance(optimiser, InterTree)
 
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    def test_working_tree_working_tree(self):
 
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        # we should have an InterTree available for WorkingTree to 
 
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        # WorkingTree.
 
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        tree = self.make_branch_and_tree('1')
 
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        tree2 = self.make_branch_and_tree('2')
 
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        optimiser = InterTree.get(tree, tree2)
 
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        self.assertIsInstance(optimiser, InterTree)
 
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        optimiser = InterTree.get(tree2, tree)
 
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        self.assertIsInstance(optimiser, InterTree)
 
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class RecordingOptimiser(InterTree):
 
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    calls = []
 
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    def compare(self, want_unchanged=False, specific_files=None,
 
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        extra_trees=None, require_versioned=False, include_root=False,
 
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        want_unversioned=False):
 
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        self.calls.append(
 
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            ('compare', self.source, self.target, want_unchanged,
 
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             specific_files, extra_trees, require_versioned, 
 
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             include_root, want_unversioned)
 
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            )
 
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    @classmethod
 
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    def is_compatible(klass, source, target):
 
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        return True
 
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class TestTree(TestCaseWithTransport):
 
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    def test_compare_calls_InterTree_compare(self):
 
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        """This test tests the way Tree.compare() uses InterTree."""
 
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        old_optimisers = InterTree._optimisers
 
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        try:
 
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            InterTree._optimisers = []
 
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            RecordingOptimiser.calls = []
 
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            InterTree.register_optimiser(RecordingOptimiser)
 
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            tree = self.make_branch_and_tree('1')
 
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            tree2 = self.make_branch_and_tree('2')
 
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            # do a series of calls:
 
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            # trivial usage
 
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            tree.changes_from(tree2)
 
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            # pass in all optional arguments by position
 
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            tree.changes_from(tree2, 'unchanged', 'specific', 'extra', 
 
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                              'require', True)
 
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            # pass in all optional arguments by keyword
 
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            tree.changes_from(tree2,
 
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                specific_files='specific',
 
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                want_unchanged='unchanged',
 
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                extra_trees='extra',
 
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                require_versioned='require',
 
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                include_root=True,
 
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                want_unversioned=True,
 
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                )
 
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        finally:
 
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            InterTree._optimisers = old_optimisers
 
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        self.assertEqual(
 
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            [
 
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             ('compare', tree2, tree, False, None, None, False, False, False),
 
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             ('compare', tree2, tree, 'unchanged', 'specific', 'extra',
 
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              'require', True, False),
 
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             ('compare', tree2, tree, 'unchanged', 'specific', 'extra',
 
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              'require', True, True),
 
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            ], RecordingOptimiser.calls)
 
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    def test_changes_from_with_root(self):
 
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        """Ensure the include_root option does what's expected."""
 
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        wt = self.make_branch_and_tree('.')
 
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        delta = wt.changes_from(wt.basis_tree())
 
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        self.assertEqual(len(delta.added), 0)
 
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        delta = wt.changes_from(wt.basis_tree(), wt, include_root=True)
 
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        self.assertEqual(len(delta.added), 1)
 
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        self.assertEqual(delta.added[0][0], '')