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Viewing changes to bzrlib/selftest/testrevision.py

  • Committer: Martin Pool
  • Date: 2005-09-01 02:34:38 UTC
  • Revision ID: mbp@sourcefrog.net-20050901023437-bf791a0ef5edae8d
- old docs: clarify that this is not mainly descended from arch anymore

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bzrlib/selftest/testrevision.py
 
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# (C) 2005 Canonical Ltd
 
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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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# 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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# 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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from bzrlib.selftest import TestCaseInTempDir
 
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def make_branches():
 
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    from bzrlib.branch import Branch
 
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    from bzrlib.commit import commit
 
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    import os
 
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    os.mkdir("branch1")
 
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    br1 = Branch("branch1", init=True)
 
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    commit(br1, "Commit one", rev_id="a@u-0-0")
 
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    commit(br1, "Commit two", rev_id="a@u-0-1")
 
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    commit(br1, "Commit three", rev_id="a@u-0-2")
 
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    os.mkdir("branch2")
 
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    br2 = Branch("branch2", init=True)
 
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    br2.update_revisions(br1)
 
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    commit(br2, "Commit four", rev_id="b@u-0-3")
 
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    commit(br2, "Commit five", rev_id="b@u-0-4")
 
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    revisions_2 = br2.revision_history()
 
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    br1.add_pending_merge(revisions_2[4])
 
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    commit(br1, "Commit six", rev_id="a@u-0-3")
 
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    commit(br1, "Commit seven", rev_id="a@u-0-4")
 
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    commit(br2, "Commit eight", rev_id="b@u-0-5")
 
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    br1.add_pending_merge(br2.revision_history()[5])
 
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    commit(br1, "Commit nine", rev_id="a@u-0-5")
 
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    br2.add_pending_merge(br1.revision_history()[4])
 
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    commit(br2, "Commit ten", rev_id="b@u-0-6")
 
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    return br1, br2
 
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class TestIsAncestor(TestCaseInTempDir):
 
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    def test_is_ancestor(self):
 
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        """Test checking whether a revision is an ancestor of another revision"""
 
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        from bzrlib.revision import is_ancestor, MultipleRevisionSources
 
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        from bzrlib.errors import NoSuchRevision
 
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        br1, br2 = make_branches()
 
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        revisions = br1.revision_history()
 
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        revisions_2 = br2.revision_history()
 
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        sources = MultipleRevisionSources(br1, br2)
 
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        assert is_ancestor(revisions[0], revisions[0], sources)
 
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        assert is_ancestor(revisions[1], revisions[0], sources)
 
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        assert not is_ancestor(revisions[0], revisions[1], sources)
 
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        assert is_ancestor(revisions_2[3], revisions[0], sources)
 
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        self.assertRaises(NoSuchRevision, is_ancestor, revisions_2[3],
 
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                          revisions[0], br1)        
 
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        assert is_ancestor(revisions[3], revisions_2[4], sources)
 
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        assert is_ancestor(revisions[3], revisions_2[4], br1)
 
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        assert is_ancestor(revisions[3], revisions_2[3], sources)
 
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        assert not is_ancestor(revisions[3], revisions_2[3], br1)
 
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class TestCommonAncestor(TestCaseInTempDir):
 
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    """Test checking whether a revision is an ancestor of another revision"""
 
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    def test_common_ancestor(self):
 
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        from bzrlib.revision import find_present_ancestors, common_ancestor
 
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        from bzrlib.revision import MultipleRevisionSources
 
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        br1, br2 = make_branches()
 
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        revisions = br1.revision_history()
 
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        revisions_2 = br2.revision_history()
 
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        sources = MultipleRevisionSources(br1, br2)
 
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        expected_ancestors_list = {revisions[3]:(0, 0), 
 
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                                   revisions[2]:(1, 1),
 
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                                   revisions_2[4]:(2, 1), 
 
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                                   revisions[1]:(3, 2),
 
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                                   revisions_2[3]:(4, 2),
 
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                                   revisions[0]:(5, 3) }
 
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        ancestors_list = find_present_ancestors(revisions[3], sources)
 
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        assert len(expected_ancestors_list) == len(ancestors_list)
 
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        for key, value in expected_ancestors_list.iteritems():
 
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            self.assertEqual(ancestors_list[key], value, 
 
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                              "key %r, %r != %r" % (key, ancestors_list[key],
 
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                                                    value))
 
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        self.assertEqual(common_ancestor(revisions[0], revisions[0], sources),
 
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                          revisions[0])
 
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        self.assertEqual(common_ancestor(revisions[1], revisions[2], sources),
 
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                          revisions[1])
 
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        self.assertEqual(common_ancestor(revisions[1], revisions[1], sources),
 
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                          revisions[1])
 
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        self.assertEqual(common_ancestor(revisions[2], revisions_2[4], sources),
 
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                          revisions[2])
 
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        self.assertEqual(common_ancestor(revisions[3], revisions_2[4], sources),
 
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                          revisions_2[4])
 
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        self.assertEqual(common_ancestor(revisions[4], revisions_2[5], sources),
 
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                          revisions_2[4])
 
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        self.assertEqual(common_ancestor(revisions[5], revisions_2[6], sources),
 
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                          revisions[4])
 
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        self.assertEqual(common_ancestor(revisions_2[6], revisions[5], sources),
 
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                          revisions_2[5])