/usr/lib/python2.7/dist-packages/traits/tests/test_str_handler.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) 2007, 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
from traits.testing.unittest_tools import unittest
from ..api import HasTraits, Trait, TraitError, TraitHandler
from ..trait_base import strx
# Validation via function
def validator(object, name, value):
if isinstance(value, basestring):
# arbitrary rule for testing
if value.find('fail') < 0:
return value
else:
raise TraitError
else:
raise TraitError
# Validation via Handler
class MyHandler(TraitHandler):
def validate(self, object, name, value):
#print 'myvalidate "%s" %s' % (value, type(value))
try:
value = strx(value)
if value.find('fail') < 0:
return value
except:
pass
self.error(object, name, value)
return
def info(self):
msg = "a string not containing the character sequence 'fail'"
return msg
class Foo(HasTraits):
s = Trait('', validator)
class Bar(HasTraits):
s = Trait('', MyHandler())
class StrHandlerCase(unittest.TestCase):
def test_validator_function(self):
f = Foo()
self.assertEqual(f.s, '')
f.s = 'ok'
self.assertEqual(f.s, 'ok')
self.assertRaises(TraitError, setattr, f, 's', 'should fail.')
self.assertEqual(f.s, 'ok')
return
def test_validator_handler(self):
b = Bar()
self.assertEqual(b.s, '')
b.s = 'ok'
self.assertEqual(b.s, 'ok')
self.assertRaises(TraitError, setattr, b, 's', 'should fail.')
self.assertEqual(b.s, 'ok')
return
### EOF
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