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Viewing changes to bzrlib/selftest/testrevision.py

- merge improved merge base selection from aaron
aaron.bentley@utoronto.ca-20050912025534-43d7275dd948e4ad

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bzrlib/selftest/testrevision.py
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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 InTempDir
 
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from bzrlib.selftest import TestCaseInTempDir
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def make_branches():
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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")
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    commit(br1, "Commit two")
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    commit(br1, "Commit three")
 
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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")
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    commit(br2, "Commit five")
 
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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")
 
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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(InTempDir):
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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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        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 TestIntermediateRevisions(TestCaseInTempDir):
 
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    def setUp(self):
 
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        from bzrlib.commit import commit
 
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        TestCaseInTempDir.setUp(self)
 
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        self.br1, self.br2 = make_branches()
 
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        commit(self.br2, "Commit eleven", rev_id="b@u-0-7")
 
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        commit(self.br2, "Commit twelve", rev_id="b@u-0-8")
 
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        commit(self.br2, "Commit thirtteen", rev_id="b@u-0-9")
 
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        self.br1.add_pending_merge(self.br2.revision_history()[6])
 
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        commit(self.br1, "Commit fourtten", rev_id="a@u-0-6")
 
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        self.br2.add_pending_merge(self.br1.revision_history()[6])
 
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        commit(self.br2, "Commit fifteen", rev_id="b@u-0-10")
 
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        from bzrlib.revision import MultipleRevisionSources
 
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        self.sources = MultipleRevisionSources(self.br1, self.br2)
 
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    def intervene(self, ancestor, revision, revision_history=None):
 
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        from bzrlib.revision import get_intervening_revisions
 
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        return get_intervening_revisions(ancestor,revision, self.sources, 
 
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                                         revision_history)
 
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    def test_intervene(self):
 
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        """Find intermediate revisions, without requiring history"""
 
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        from bzrlib.errors import NotAncestor, NoSuchRevision
 
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        assert len(self.intervene('a@u-0-0', 'a@u-0-0')) == 0
 
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        self.assertEqual(self.intervene('a@u-0-0', 'a@u-0-1'), ['a@u-0-1'])
 
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        self.assertEqual(self.intervene('a@u-0-0', 'a@u-0-2'), 
 
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                         ['a@u-0-1', 'a@u-0-2'])
 
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        self.assertEqual(self.intervene('a@u-0-0', 'b@u-0-3'), 
 
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                         ['a@u-0-1', 'a@u-0-2', 'b@u-0-3'])
 
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        self.assertEqual(self.intervene('b@u-0-3', 'a@u-0-3'), 
 
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                         ['b@u-0-4', 'a@u-0-3'])
 
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        self.assertEqual(self.intervene('a@u-0-2', 'a@u-0-3', 
 
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                                        self.br1.revision_history()), 
 
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                         ['a@u-0-3'])
 
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        self.assertEqual(self.intervene('a@u-0-0', 'a@u-0-5', 
 
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                                        self.br1.revision_history()), 
 
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                         ['a@u-0-1', 'a@u-0-2', 'a@u-0-3', 'a@u-0-4', 
 
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                          'a@u-0-5'])
 
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        self.assertEqual(self.intervene('a@u-0-0', 'b@u-0-6', 
 
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                         self.br1.revision_history()), 
 
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                         ['a@u-0-1', 'a@u-0-2', 'a@u-0-3', 'a@u-0-4', 
 
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                          'b@u-0-6'])
 
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        self.assertEqual(self.intervene('a@u-0-0', 'b@u-0-5'), 
 
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                         ['a@u-0-1', 'a@u-0-2', 'b@u-0-3', 'b@u-0-4', 
 
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                          'b@u-0-5'])
 
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        self.assertEqual(self.intervene('b@u-0-3', 'b@u-0-6', 
 
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                         self.br2.revision_history()), 
 
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                         ['b@u-0-4', 'b@u-0-5', 'b@u-0-6'])
 
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        self.assertEqual(self.intervene('b@u-0-6', 'b@u-0-10'), 
 
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                         ['b@u-0-7', 'b@u-0-8', 'b@u-0-9', 'b@u-0-10'])
 
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        self.assertEqual(self.intervene('b@u-0-6', 'b@u-0-10', 
 
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                                        self.br2.revision_history()), 
 
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                         ['b@u-0-7', 'b@u-0-8', 'b@u-0-9', 'b@u-0-10'])
 
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        self.assertRaises(NotAncestor, self.intervene, 'b@u-0-10', 'b@u-0-6', 
 
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                          self.br2.revision_history())
 
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        self.assertRaises(NoSuchRevision, self.intervene, 'c@u-0-10', 
 
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                          'b@u-0-6', self.br2.revision_history())
 
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        self.assertRaises(NoSuchRevision, self.intervene, 'b@u-0-10', 
 
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                          'c@u-0-6', self.br2.revision_history())
 
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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_old_common_ancestor(self):
 
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        """Pick a resonable merge base using the old functionality"""
 
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        from bzrlib.revision import find_present_ancestors
 
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        from bzrlib.revision import old_common_ancestor as 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])
 
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    def test_common_ancestor(self):
 
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        """Pick a reasonable merge base"""
 
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        from bzrlib.revision import find_present_ancestors
 
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        from bzrlib.revision import 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[4])
 
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