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Merge in bzrdir work to enable checkout improvements.

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bzrlib/tests/test_ancestry.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 cStringIO import StringIO
 
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import os
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import sys
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import os
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from cStringIO import StringIO
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from bzrlib.tests import TestCase, TestCaseInTempDir
 
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from bzrlib.tests import TestCase, TestCaseWithTransport
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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(TestCaseInTempDir):
 
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class TestAncestry(TestCaseWithTransport):
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    def test_straightline_ancestry(self):
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        """Test ancestry file when just committing."""
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        b = Branch.initialize(u'.')
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        wt = b.working_tree()
 
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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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                  allow_pointless=True,
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                  rev_id='tester@foo--2')
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        ancs = b.get_ancestry('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.get_ancestry('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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        b = Branch.initialize(u'.')
 
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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 = b.working_tree()
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        wt.commit(message='one',
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                  allow_pointless=True,
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                  rev_id='tester@foo--1')