/usr/lib/python2.7/dist-packages/fixtures/tests/_fixtures/test_monkeypatch.py is in python-fixtures 3.0.0-2.
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) 2010, Robert Collins <robertc@robertcollins.net>
#
# Licensed under either the Apache License, Version 2.0 or the BSD 3-clause
# license at the users choice. A copy of both licenses are available in the
# project source as Apache-2.0 and BSD. You may not use this file except in
# compliance with one of these two licences.
#
# Unless required by applicable law or agreed to in writing, software
# distributed under these licenses is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# license you chose for the specific language governing permissions and
# limitations under that license.
import functools
import testtools
from testtools.matchers import Is
from fixtures import MonkeyPatch, TestWithFixtures
reference = 23
class C(object):
def foo(self, arg):
return arg
@staticmethod
def foo_static(): pass
@classmethod
def foo_cls(cls): pass
class D(object):
def bar(self): pass
def bar_two_args(self, arg):
return (self, arg)
@classmethod
def bar_cls(cls):
return cls
@classmethod
def bar_cls_args(cls, *args):
return (cls,) + args
@staticmethod
def bar_static():
pass
@staticmethod
def bar_static_args(*args):
return args
def bar_self_referential(self, *args, **kwargs):
self.bar()
INST_C = C()
def fake(*args):
return args
def fake2(arg): pass
def fake_no_args(): pass
def fake_no_args2(): pass
@staticmethod
def fake_static(): pass
class TestMonkeyPatch(testtools.TestCase, TestWithFixtures):
def test_patch_and_restore(self):
fixture = MonkeyPatch(
'fixtures.tests._fixtures.test_monkeypatch.reference', 45)
self.assertEqual(23, reference)
fixture.setUp()
try:
self.assertEqual(45, reference)
finally:
fixture.cleanUp()
self.assertEqual(23, reference)
def test_patch_missing_attribute(self):
fixture = MonkeyPatch(
'fixtures.tests._fixtures.test_monkeypatch.new_attr', True)
self.assertFalse('new_attr' in globals())
fixture.setUp()
try:
self.assertEqual(True, new_attr)
finally:
fixture.cleanUp()
self.assertFalse('new_attr' in globals())
def test_delete_existing_attribute(self):
fixture = MonkeyPatch(
'fixtures.tests._fixtures.test_monkeypatch.reference',
MonkeyPatch.delete)
self.assertEqual(23, reference)
fixture.setUp()
try:
self.assertFalse('reference' in globals())
finally:
fixture.cleanUp()
self.assertEqual(23, reference)
def test_delete_missing_attribute(self):
fixture = MonkeyPatch(
'fixtures.tests._fixtures.test_monkeypatch.new_attr',
MonkeyPatch.delete)
self.assertFalse('new_attr' in globals())
fixture.setUp()
try:
self.assertFalse('new_attr' in globals())
finally:
fixture.cleanUp()
self.assertFalse('new_attr' in globals())
def _check_restored_static_or_class_method(self, oldmethod, oldmethod_inst,
klass, methodname):
restored_method = getattr(klass, methodname)
restored_method_inst = getattr(klass(), methodname)
self.assertEqual(oldmethod, restored_method)
self.assertEqual(oldmethod, restored_method_inst)
self.assertEqual(oldmethod_inst, restored_method)
self.assertEqual(oldmethod_inst, restored_method_inst)
restored_method()
restored_method_inst()
def test_patch_staticmethod_with_staticmethod(self):
oldmethod = C.foo_static
oldmethod_inst = C().foo_static
fixture = MonkeyPatch(
'fixtures.tests._fixtures.test_monkeypatch.C.foo_static',
D.bar_static)
with fixture:
C.foo_static()
C().foo_static()
self._check_restored_static_or_class_method(oldmethod, oldmethod_inst,
C, 'foo_static')
def test_patch_staticmethod_with_classmethod(self):
oldmethod = C.foo_static
oldmethod_inst = C().foo_static
fixture = MonkeyPatch(
'fixtures.tests._fixtures.test_monkeypatch.C.foo_static',
D.bar_cls)
with fixture:
C.foo_static()
C().foo_static()
self._check_restored_static_or_class_method(oldmethod, oldmethod_inst,
C, 'foo_static')
def test_patch_staticmethod_with_function(self):
oldmethod = C.foo_static
oldmethod_inst = C().foo_static
fixture = MonkeyPatch(
'fixtures.tests._fixtures.test_monkeypatch.C.foo_static',
fake_no_args)
with fixture:
C.foo_static()
C().foo_static()
self._check_restored_static_or_class_method(oldmethod, oldmethod_inst,
C, 'foo_static')
def test_patch_staticmethod_with_boundmethod(self):
oldmethod = C.foo_static
oldmethod_inst = C().foo_static
fixture = MonkeyPatch(
'fixtures.tests._fixtures.test_monkeypatch.C.foo_static',
D().bar)
with fixture:
C.foo_static()
C().foo_static()
self._check_restored_static_or_class_method(oldmethod, oldmethod_inst,
C, 'foo_static')
def test_patch_classmethod_with_staticmethod(self):
oldmethod = C.foo_cls
oldmethod_inst = C().foo_cls
fixture = MonkeyPatch(
'fixtures.tests._fixtures.test_monkeypatch.C.foo_cls',
D.bar_static_args)
with fixture:
(cls,) = C.foo_cls()
self.expectThat(cls, Is(C))
(cls,) = C().foo_cls()
self.expectThat(cls, Is(C))
self._check_restored_static_or_class_method(oldmethod, oldmethod_inst,
C, 'foo_cls')
def test_patch_classmethod_with_classmethod(self):
oldmethod = C.foo_cls
oldmethod_inst = C().foo_cls
fixture = MonkeyPatch(
'fixtures.tests._fixtures.test_monkeypatch.C.foo_cls',
D.bar_cls_args)
with fixture:
cls, target_class = C.foo_cls()
self.expectThat(cls, Is(D))
self.expectThat(target_class, Is(C))
cls, target_class = C().foo_cls()
self.expectThat(cls, Is(D))
self.expectThat(target_class, Is(C))
self._check_restored_static_or_class_method(oldmethod, oldmethod_inst,
C, 'foo_cls')
def test_patch_classmethod_with_function(self):
oldmethod = C.foo_cls
oldmethod_inst = C().foo_cls
fixture = MonkeyPatch(
'fixtures.tests._fixtures.test_monkeypatch.C.foo_cls',
fake)
with fixture:
(cls,) = C.foo_cls()
self.expectThat(cls, Is(C))
(cls, arg) = C().foo_cls(1)
self.expectThat(cls, Is(C))
self.assertEqual(1, arg)
self._check_restored_static_or_class_method(oldmethod, oldmethod_inst,
C, 'foo_cls')
def test_patch_classmethod_with_boundmethod(self):
oldmethod = C.foo_cls
oldmethod_inst = C().foo_cls
d = D()
fixture = MonkeyPatch(
'fixtures.tests._fixtures.test_monkeypatch.C.foo_cls',
d.bar_two_args)
with fixture:
slf, cls = C.foo_cls()
self.expectThat(slf, Is(d))
self.expectThat(cls, Is(C))
slf, cls = C().foo_cls()
self.expectThat(slf, Is(d))
self.expectThat(cls, Is(C))
self._check_restored_static_or_class_method(oldmethod, oldmethod_inst,
C, 'foo_cls')
def test_patch_function_with_staticmethod(self):
oldmethod = fake_no_args
fixture = MonkeyPatch(
'fixtures.tests._fixtures.test_monkeypatch.fake_no_args',
D.bar_static)
with fixture:
fake_no_args()
self.assertEqual(oldmethod, fake_no_args)
def test_patch_function_with_classmethod(self):
oldmethod = fake_no_args
fixture = MonkeyPatch(
'fixtures.tests._fixtures.test_monkeypatch.fake_no_args',
D.bar_cls)
with fixture:
fake_no_args()
self.assertEqual(oldmethod, fake_no_args)
def test_patch_function_with_function(self):
oldmethod = fake_no_args
fixture = MonkeyPatch(
'fixtures.tests._fixtures.test_monkeypatch.fake_no_args',
fake_no_args2)
with fixture:
fake_no_args()
self.assertEqual(oldmethod, fake_no_args)
def test_patch_function_with_partial(self):
oldmethod = fake_no_args
fixture = MonkeyPatch(
'fixtures.tests._fixtures.test_monkeypatch.fake_no_args',
functools.partial(fake, 1))
with fixture:
(ret,) = fake_no_args()
self.assertEqual(1, ret)
self.assertEqual(oldmethod, fake_no_args)
def test_patch_function_with_boundmethod(self):
oldmethod = fake_no_args
fixture = MonkeyPatch(
'fixtures.tests._fixtures.test_monkeypatch.fake_no_args',
D().bar)
with fixture:
fake_no_args()
self.assertEqual(oldmethod, fake_no_args)
def test_patch_boundmethod_with_staticmethod(self):
oldmethod = INST_C.foo
fixture = MonkeyPatch(
'fixtures.tests._fixtures.test_monkeypatch.INST_C.foo',
D.bar_static)
with fixture:
INST_C.foo()
self.assertEqual(oldmethod, INST_C.foo)
def test_patch_boundmethod_with_classmethod(self):
oldmethod = INST_C.foo
fixture = MonkeyPatch(
'fixtures.tests._fixtures.test_monkeypatch.INST_C.foo',
D.bar_cls)
with fixture:
INST_C.foo()
self.assertEqual(oldmethod, INST_C.foo)
def test_patch_boundmethod_with_function(self):
oldmethod = INST_C.foo
fixture = MonkeyPatch(
'fixtures.tests._fixtures.test_monkeypatch.INST_C.foo',
fake_no_args)
with fixture:
INST_C.foo()
self.assertEqual(oldmethod, INST_C.foo)
def test_patch_boundmethod_with_boundmethod(self):
oldmethod = INST_C.foo
fixture = MonkeyPatch(
'fixtures.tests._fixtures.test_monkeypatch.INST_C.foo',
D().bar)
with fixture:
INST_C.foo()
self.assertEqual(oldmethod, INST_C.foo)
sentinel = object()
self.assertEqual(sentinel, INST_C.__dict__.get('foo', sentinel))
def test_patch_unboundmethod_with_staticmethod(self):
oldmethod = C.foo
fixture = MonkeyPatch(
'fixtures.tests._fixtures.test_monkeypatch.C.foo',
D.bar_static_args)
with fixture:
target_self, arg = INST_C.foo(1)
self.expectThat(target_self, Is(INST_C))
self.assertEqual(1, arg)
self.assertEqual(oldmethod, C.foo)
def test_patch_unboundmethod_with_classmethod(self):
oldmethod = C.foo
fixture = MonkeyPatch(
'fixtures.tests._fixtures.test_monkeypatch.C.foo',
D.bar_cls_args)
with fixture:
c = C()
cls, target_self, arg = c.foo(1)
self.expectThat(cls, Is(D))
self.expectThat(target_self, Is(c))
self.assertEqual(1, arg)
self.assertEqual(oldmethod, C.foo)
def test_patch_unboundmethod_with_function(self):
oldmethod = C.foo
fixture = MonkeyPatch(
'fixtures.tests._fixtures.test_monkeypatch.C.foo',
fake)
with fixture:
c = C()
target_self, arg = c.foo(1)
self.expectThat(target_self, Is(c))
self.assertTrue(1, arg)
self.assertEqual(oldmethod, C.foo)
def test_patch_unboundmethod_with_boundmethod(self):
oldmethod = C.foo
d = D()
fixture = MonkeyPatch(
'fixtures.tests._fixtures.test_monkeypatch.C.foo',
d.bar_two_args)
with fixture:
c = C()
slf, target_self = c.foo()
self.expectThat(slf, Is(d))
self.expectThat(target_self, Is(c))
self.assertEqual(oldmethod, C.foo)
def test_double_patch_instancemethod(self):
oldmethod = C.foo
oldmethod_inst = C().foo
fixture1 = MonkeyPatch(
'fixtures.tests._fixtures.test_monkeypatch.C.foo',
fake)
fixture2 = MonkeyPatch(
'fixtures.tests._fixtures.test_monkeypatch.C.foo',
fake2)
with fixture1:
with fixture2:
C().foo()
self.assertEqual(oldmethod, C.foo)
# The method address changes with each instantiation of C, and method
# equivalence just tests that. Compare the code objects instead.
self.assertEqual(oldmethod_inst.__code__, C().foo.__code__)
def test_double_patch_staticmethod(self):
oldmethod = C.foo_static
oldmethod_inst = C().foo_static
fixture1 = MonkeyPatch(
'fixtures.tests._fixtures.test_monkeypatch.C.foo_static',
fake_no_args)
fixture2 = MonkeyPatch(
'fixtures.tests._fixtures.test_monkeypatch.C.foo_static',
fake_static)
with fixture1:
with fixture2:
C.foo_static()
C().foo_static()
self._check_restored_static_or_class_method(oldmethod, oldmethod_inst,
C, 'foo_static')
def test_double_patch_classmethod(self):
oldmethod = C.foo_cls
oldmethod_inst = C().foo_cls
fixture1 = MonkeyPatch(
'fixtures.tests._fixtures.test_monkeypatch.C.foo_cls',
fake)
fixture2 = MonkeyPatch(
'fixtures.tests._fixtures.test_monkeypatch.C.foo_cls',
fake2)
with fixture1:
with fixture2:
C.foo_cls()
C().foo_cls()
self._check_restored_static_or_class_method(oldmethod, oldmethod_inst,
C, 'foo_cls')
def test_patch_c_foo_with_instance_d_bar_self_referential(self):
oldmethod = C.foo
oldmethod_inst = C().foo
fixture = MonkeyPatch(
'fixtures.tests._fixtures.test_monkeypatch.C.foo',
D().bar_self_referential)
with fixture:
C().foo()
self.assertEqual(oldmethod, C.foo)
# The method address changes with each instantiation of C, and method
# equivalence just tests that. Compare the code objects instead.
self.assertEqual(oldmethod_inst.__code__, C().foo.__code__)
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