1894
1894
_mod_revision.NULL_REVISION)
1895
1895
tt = TransformPreview(basis)
1896
1896
self.addCleanup(tt.finalize)
1897
e = self.assertRaises(errors.WrongCommitBasis, tt.commit, branch, '')
1897
e = self.assertRaises(ValueError, tt.commit, branch, '')
1898
1898
self.assertEqual('TreeTransform not based on branch basis: null:',