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bzrlib/tests/test_ancestry.py
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# Copyright (C) 2005 by Canonical Ltd
 
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# Copyright (C) 2005, 2007 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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#
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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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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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from cStringIO import StringIO
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import os
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import sys
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from bzrlib.tests import TestCase, TestCaseWithTransport
 
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from bzrlib.tests import TestCaseWithMemoryTransport
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from bzrlib.branch import Branch
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from bzrlib.revision import is_ancestor
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class TestAncestry(TestCaseWithTransport):
 
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from bzrlib.branchbuilder import BranchBuilder
 
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class TestAncestry(TestCaseWithMemoryTransport):
 
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    def assertAncestryEqual(self, expected, revision_id, branch):
 
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        """Assert that the ancestry of revision_id in branch is as expected."""
 
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        ancestry = branch.repository.get_ancestry(revision_id)
 
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        self.assertEqual(expected, ancestry)
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    def test_straightline_ancestry(self):
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        """Test ancestry file when just committing."""
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        wt = self.make_branch_and_tree('.')
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        b = wt.branch
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        wt.commit(message='one',
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                  allow_pointless=True,
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                  rev_id='tester@foo--1')
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        wt.commit(message='two',
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                  allow_pointless=True,
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                  rev_id='tester@foo--2')
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        ancs = b.repository.get_ancestry('tester@foo--2')
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        self.assertEqual([None, 'tester@foo--1', 'tester@foo--2'], ancs)
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        self.assertEqual([None, 'tester@foo--1'], 
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                         b.repository.get_ancestry('tester@foo--1'))
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    def test_none_is_always_an_ancestor(self):
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        wt = self.make_branch_and_tree('.')
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        b = wt.branch
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        # note this is tested before any commits are done.
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        self.assertEqual(True, is_ancestor(None, None, b))
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        wt.commit(message='one',
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                  allow_pointless=True,
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                  rev_id='tester@foo--1')
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        self.assertEqual(True, is_ancestor(None, None, b))
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        self.assertEqual(True, is_ancestor('tester@foo--1', None, b))
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        self.assertEqual(False, is_ancestor(None, 'tester@foo--1', b))
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        builder = BranchBuilder(self.get_transport())
 
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        rev_id_one = builder.build_commit()
 
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        rev_id_two = builder.build_commit()
 
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        branch = builder.get_branch()
 
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        self.assertAncestryEqual([None, rev_id_one, rev_id_two],
 
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            rev_id_two, branch)
 
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        self.assertAncestryEqual([None, rev_id_one], rev_id_one, branch)
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# TODO: check that ancestry is updated to include indirectly merged revisions