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bzrlib/tests/per_controldir/test_controldir.py
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        self.assertRaises(errors.UninitializableFormat,
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            self.bzrdir_format.initialize, t.base)
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    def test_multiple_initialization(self):
 
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        # loopback test to check the current format initializes to itself.
 
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        if not self.bzrdir_format.is_initializable():
 
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            # unsupported formats are not loopback testable
 
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            # because the default open will not open them and
 
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            # they may not be initializable.
 
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            raise TestNotApplicable("format is not initializable")
 
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        self.bzrdir_format.initialize('.')
 
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        self.assertRaises(errors.AlreadyControlDirError,
 
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            self.bzrdir_format.initialize, '.')
 
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    def test_create_null_workingtree(self):
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        dir = self.make_bzrdir('dir1')
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        dir.create_repository()