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# (C) Copyright 2005-2023 Enthought, Inc., Austin, TX
# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD
# license included in LICENSE.txt and may be redistributed only under
# the conditions described in the aforementioned license. The license
# is also available online at http://www.enthought.com/licenses/BSD.txt
#
# Thanks for using Enthought open source!
"""
Tests for the TraitPrefixList handler.
"""
import pickle
import unittest
from traits.api import HasTraits, TraitError, TraitPrefixList, Trait
class TestTraitPrefixList(unittest.TestCase):
def test_pickle_roundtrip(self):
with self.assertWarns(DeprecationWarning):
class A(HasTraits):
foo = Trait("one", TraitPrefixList("zero", "one", "two"))
a = A()
foo_trait = a.traits()["foo"]
reconstituted = pickle.loads(pickle.dumps(foo_trait))
self.assertEqual(
foo_trait.validate(a, "foo", "ze"),
"zero",
)
with self.assertRaises(TraitError):
foo_trait.validate(a, "foo", "zero-knowledge")
self.assertEqual(
reconstituted.validate(a, "foo", "ze"),
"zero",
)
with self.assertRaises(TraitError):
reconstituted.validate(a, "foo", "zero-knowledge")
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