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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 "Any" trait type.
"""
import unittest
from traits.has_traits import HasTraits
from traits.trait_types import Any
class TestAny(unittest.TestCase):
def test_default_default(self):
class A(HasTraits):
foo = Any()
a = A()
self.assertEqual(a.foo, None)
def test_list_default(self):
message_pattern = r"a default value of type 'list'.* will be shared"
with self.assertWarnsRegex(DeprecationWarning, message_pattern):
class A(HasTraits):
foo = Any([])
# Test the current (but deprecated) copying behaviour
a = A()
b = A()
self.assertEqual(a.foo, [])
self.assertEqual(b.foo, [])
a.foo.append(35)
self.assertEqual(a.foo, [35])
self.assertEqual(b.foo, [])
def test_dict_default(self):
message_pattern = r"a default value of type 'dict'.* will be shared"
with self.assertWarnsRegex(DeprecationWarning, message_pattern):
class A(HasTraits):
foo = Any({})
# Test the current (but deprecated) copying behaviour
a = A()
b = A()
self.assertEqual(a.foo, {})
self.assertEqual(b.foo, {})
a.foo["color"] = "red"
self.assertEqual(a.foo, {"color": "red"})
self.assertEqual(b.foo, {})
def test_with_factory(self):
class A(HasTraits):
foo = Any(factory=dict)
a = A()
b = A()
self.assertEqual(a.foo, {})
self.assertEqual(b.foo, {})
# Defaults are not shared.
a.foo["key"] = 23
self.assertEqual(a.foo, {"key": 23})
self.assertEqual(b.foo, {})
# An assigned dictionary is shared.
a.foo = b.foo = {"red": 0xFF0000}
a.foo["green"] = 0x00FF00
self.assertEqual(b.foo["green"], 0x00FF00)
def test_with_factory_and_args(self):
def factory(*args, **kw):
return "received", args, kw
args = (21, 34, "some string")
kw = {"bar": 57}
class A(HasTraits):
foo = Any(factory=factory, args=args, kw=kw)
a = A()
self.assertEqual(a.foo, ("received", args, kw))
def test_with_default_value_and_factory(self):
with self.assertRaises(TypeError):
Any(23, factory=int)
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