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bzrlib/tests/test_revisiontree.py
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"""Tests for the RevisionTree class."""
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from bzrlib import (
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    revision,
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    )
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import bzrlib
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from bzrlib.tests import TestCaseWithTransport
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from bzrlib.tree import RevisionTree
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        # the parents for a revision_tree(None) are []:
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        self.assertEqual([],
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            self.t.branch.repository.revision_tree(None).get_parent_ids())
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    def test_empty_no_root(self):
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        null_tree = self.t.branch.repository.revision_tree(
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            revision.NULL_REVISION)
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        self.assertIs(None, null_tree.inventory.root)