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✏️ Editing: test_properties.py

#!/usr/bin/env python
#
# Author: Mike McKerns (mmckerns @caltech and @uqfoundation)
# Copyright (c) 2008-2016 California Institute of Technology.
# Copyright (c) 2016-2023 The Uncertainty Quantification Foundation.
# License: 3-clause BSD.  The full license text is available at:
#  - https://github.com/uqfoundation/dill/blob/master/LICENSE

import sys

import dill
dill.settings['recurse'] = True

class Foo(object):
    def __init__(self):
        self._data = 1

def _get_data(self):
        return self._data

def _set_data(self, x):
        self._data = x

data = property(_get_data, _set_data)

def test_data_not_none():
    FooS = dill.copy(Foo)
    assert FooS.data.fget is not None
    assert FooS.data.fset is not None
    assert FooS.data.fdel is None

def test_data_unchanged():
    FooS = dill.copy(Foo)
    try:
        res = FooS().data
    except Exception:
        e = sys.exc_info()[1]
        raise AssertionError(str(e))
    else:
        assert res == 1

def test_data_changed():
    FooS = dill.copy(Foo)
    try:
        f = FooS()
        f.data = 1024
        res = f.data
    except Exception:
        e = sys.exc_info()[1]
        raise AssertionError(str(e))
    else:
        assert res == 1024

if __name__ == '__main__':
    test_data_not_none()
    test_data_unchanged()
    test_data_changed()

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