/usr/lib/python2.7/dist-packages/traits/tests/test_trait_default_initializer.py is in python-traits 4.6.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#
# Copyright (c) 2013, Enthought, Inc.
# 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!
#
#------------------------------------------------------------------------------
from __future__ import absolute_import
import unittest
from ..trait_types import Int
from ..has_traits import HasTraits
class Foo(HasTraits):
bar = Int
def _bar_default(self):
return 4
class TestTraitDefaultInitializer(unittest.TestCase):
""" Test basic usage of the default method.
"""
def test_default_value(self):
foo = Foo()
self.assertEqual(foo.bar, 4)
def test_default_value_override(self):
foo = Foo(bar=3)
self.assertEqual(foo.bar, 3)
def test_reset_to_default(self):
foo = Foo(bar=3)
foo.reset_traits(traits=['bar'])
self.assertEqual(foo.bar, 4)
def test_error_propagation_in_default_methods(self):
class FooException(Foo):
def _bar_default(self):
1 / 0
foo = FooException()
self.assertRaises(ZeroDivisionError, lambda: foo.bar)
class FooKeyError(Foo):
def _bar_default(self):
raise KeyError()
# Check that KeyError is propagated (issue #70).
foo = FooKeyError()
self.assertRaises(KeyError, lambda: foo.bar)
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