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edelbluth/nested.py

Last active Aug 29, 2015
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juergen.rocks > Python-Klassen-Initialisierung: Bemerkenswertes Verhalten
# -*- coding: utf-8 -*-
# Copyright 2015 Juergen Edelbluth
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
__author__ = 'Juergen Edelbluth'
class A(object):
class ASub:
A_SUB_VALUE = 1
def __init__(self, a=ASub.A_SUB_VALUE):
self.__a = a
@property
def a(self):
return self.__a
class B(object):
class BSub:
B_SUB_VALUE = 1
@classmethod
def get_b(cls):
return cls.B_SUB_VALUE
def __init__(self, b=BSub.get_b()):
self.__b = b
@property
def b(self):
return self.__b
class C(object):
class CSub:
C_SUB_VALUE = 1
def __init__(self, c=None):
self.__c = c
if c is None:
self.__c = C.CSub.C_SUB_VALUE
@property
def c(self):
return self.__c
class D(object):
class DSub:
D_SUB_VALUE = 1
@classmethod
def get_d(cls):
return cls.D_SUB_VALUE
def __init__(self, d=None):
self.__d = d
if d is None:
self.__d = D.DSub.get_d()
@property
def d(self):
return self.__d
# -*- coding: utf-8 -*-
# Copyright 2015 Juergen Edelbluth
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
__author__ = 'Juergen Edelbluth'
class AValue(object):
A_VALUE = 1
class A(object):
def __init__(self, a=AValue.A_VALUE):
self.__a = a
@property
def a(self):
return self.__a
# -*- coding: utf-8 -*-
# Copyright 2015 Juergen Edelbluth
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
__author__ = 'Juergen Edelbluth'
from unittest import TestCase
import nested
import plain
class NestedTest(TestCase):
def test_a(self):
n1 = nested.A()
self.assertEqual(n1.a, 1)
nested.A.ASub.A_SUB_VALUE = 10
n2 = nested.A()
self.assertEqual(n2.a, 1)
n3 = nested.A(100)
self.assertEqual(n3.a, 100)
def test_b(self):
n1 = nested.B()
self.assertEqual(n1.b, 1)
nested.B.BSub.B_SUB_VALUE = 10
n2 = nested.B()
self.assertEqual(n2.b, 1)
n3 = nested.B(100)
self.assertEqual(n3.b, 100)
def test_c(self):
n1 = nested.C()
self.assertEqual(n1.c, 1)
nested.C.CSub.C_SUB_VALUE = 10
n2 = nested.C()
self.assertEqual(n2.c, 10)
n3 = nested.C(100)
self.assertEqual(n3.c, 100)
def test_d(self):
n1 = nested.D()
self.assertEqual(n1.d, 1)
nested.D.DSub.D_SUB_VALUE = 10
n2 = nested.D()
self.assertEqual(n2.d, 10)
n3 = nested.D(100)
self.assertEqual(n3.d, 100)
class PlainTest(TestCase):
def test_a(self):
p1 = plain.A()
self.assertEqual(p1.a, 1)
plain.AValue.A_VALUE = 10
p2 = plain.A()
self.assertEqual(p2.a, 1)
p3 = plain.A(100)
self.assertEqual(p3.a, 100)
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