def test_permissive(self):
variables = Variables([0, 1])
# relabels a non-existant variable 2
variables.relabel({0: 'a', 1: 'b', 2: 'c'})
self.assertEqual(variables, Variables('ab'))
def test_permissive_deprecated_api(self):
variables = Variables([0, 1])
with self.assertWarns(DeprecationWarning):
variables.relabel({0: 'a', 1: 'b', 2: 'c'})
self.assertEqual(variables, Variables('ab'))
def test_relabel_conflict(self):
variables = Variables(self.iterable)
iterable = self.iterable
# want a relabelling with identity relabels and that maps to the same
# set of labels as the original
target = [iterable[-i] for i in range(len(iterable))]
mapping = dict(zip(iterable, target))
variables.relabel(mapping)
self.assertEqual(variables, target)
def test_relabel_not_hashable(self):
variables = Variables(self.iterable)
mapping = {v: [v] for v in variables}
with self.assertRaises(ValueError):
variables.relabel(mapping)
