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bzrlib/tests/test_merge.py
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from bzrlib.errors import UnrelatedBranches, NoCommits, BzrCommandError
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from bzrlib.merge import transform_tree, merge_inner, _PlanMerge
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from bzrlib.osutils import pathjoin, file_kind
 
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from bzrlib.revision import common_ancestor
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from bzrlib.tests import TestCaseWithTransport, TestCaseWithMemoryTransport
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from bzrlib.trace import (enable_test_log, disable_test_log)
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from bzrlib.workingtree import WorkingTree
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        """Merge base is sane when two unrelated branches are merged"""
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        wt1, br2 = self.test_pending_with_null()
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        wt1.commit("blah")
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        wt1.lock_read()
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        try:
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            last = wt1.branch.last_revision()
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            last2 = br2.last_revision()
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            graph = wt1.branch.repository.get_graph()
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            self.assertEqual(last2, graph.find_unique_lca(last, last2))
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        finally:
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            wt1.unlock()
 
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        last = wt1.branch.last_revision()
 
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        self.assertEqual(common_ancestor(last, last, wt1.branch.repository), last)
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    def test_create_rename(self):
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        """Rename an inventory entry while creating the file"""