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from __future__ import print_function
import unittest
import wrapt
from compat import PYXY
@wrapt.synchronized
def function():
print('function')
class C1(object):
@wrapt.synchronized
def function1(self):
print('function1')
@wrapt.synchronized
@classmethod
def function2(cls):
print('function2')
@wrapt.synchronized
@staticmethod
def function3():
print('function3')
c1 = C1()
@wrapt.synchronized
class C2(object):
pass
@wrapt.synchronized
class C3:
pass
class C4(object):
# Prior to Python 3.9, this yields undesirable results due to how
# class method is implemented. The classmethod doesn't bind the
# method to the class before calling. As a consequence, the
# decorator wrapper function sees the instance as None with the
# class being explicitly passed as the first argument. It isn't
# possible to detect and correct this. For more details see:
# https://bugs.python.org/issue19072
@classmethod
@wrapt.synchronized
def function2(cls):
print('function2')
@staticmethod
@wrapt.synchronized
def function3():
print('function3')
c4 = C4()
class C5(object):
def __bool__(self):
return False
__nonzero__=__bool__
@wrapt.synchronized
def function1(self):
print('function1')
c5 = C5()
class TestSynchronized(unittest.TestCase):
def test_synchronized_function(self):
_lock0 = getattr(function, '_synchronized_lock', None)
self.assertEqual(_lock0, None)
function()
_lock1 = getattr(function, '_synchronized_lock', None)
self.assertNotEqual(_lock1, None)
function()
_lock2 = getattr(function, '_synchronized_lock', None)
self.assertNotEqual(_lock2, None)
self.assertEqual(_lock2, _lock1)
function()
_lock3 = getattr(function, '_synchronized_lock', None)
self.assertNotEqual(_lock3, None)
self.assertEqual(_lock3, _lock2)
def test_synchronized_inner_staticmethod(self):
_lock0 = getattr(C1.function3, '_synchronized_lock', None)
self.assertEqual(_lock0, None)
c1.function3()
_lock1 = getattr(C1.function3, '_synchronized_lock', None)
self.assertNotEqual(_lock1, None)
C1.function3()
_lock2 = getattr(C1.function3, '_synchronized_lock', None)
self.assertNotEqual(_lock2, None)
self.assertEqual(_lock2, _lock1)
C1.function3()
_lock3 = getattr(C1.function3, '_synchronized_lock', None)
self.assertNotEqual(_lock3, None)
self.assertEqual(_lock3, _lock2)
def test_synchronized_outer_staticmethod(self):
_lock0 = getattr(C4.function3, '_synchronized_lock', None)
self.assertEqual(_lock0, None)
c4.function3()
_lock1 = getattr(C4.function3, '_synchronized_lock', None)
self.assertNotEqual(_lock1, None)
C4.function3()
_lock2 = getattr(C4.function3, '_synchronized_lock', None)
self.assertNotEqual(_lock2, None)
self.assertEqual(_lock2, _lock1)
C4.function3()
_lock3 = getattr(C4.function3, '_synchronized_lock', None)
self.assertNotEqual(_lock3, None)
self.assertEqual(_lock3, _lock2)
def test_synchronized_inner_classmethod(self):
if hasattr(C1, '_synchronized_lock'):
del C1._synchronized_lock
_lock0 = getattr(C1, '_synchronized_lock', None)
self.assertEqual(_lock0, None)
c1.function2()
_lock1 = getattr(C1, '_synchronized_lock', None)
self.assertNotEqual(_lock1, None)
C1.function2()
_lock2 = getattr(C1, '_synchronized_lock', None)
self.assertNotEqual(_lock2, None)
self.assertEqual(_lock2, _lock1)
C1.function2()
_lock3 = getattr(C1, '_synchronized_lock', None)
self.assertNotEqual(_lock3, None)
self.assertEqual(_lock3, _lock2)
def test_synchronized_outer_classmethod(self):
# Prior to Python 3.9 this isn't detected as a class method
# call, as the classmethod decorator doesn't bind the wrapped
# function to the class before calling and just calls it direct,
# explicitly passing the class as first argument. For more
# details see: https://bugs.python.org/issue19072
# Starting with Python 3.13 the old behavior is back.
# For more details see https://github.com/python/cpython/issues/89519
if (3, 9) <= PYXY < (3, 13):
_lock0 = getattr(C4, '_synchronized_lock', None)
else:
_lock0 = getattr(C4.function2, '_synchronized_lock', None)
self.assertEqual(_lock0, None)
c4.function2()
if (3, 9) <= PYXY < (3, 13):
_lock1 = getattr(C4, '_synchronized_lock', None)
else:
_lock1 = getattr(C4.function2, '_synchronized_lock', None)
self.assertNotEqual(_lock1, None)
C4.function2()
if (3, 9) <= PYXY < (3, 13):
_lock2 = getattr(C4, '_synchronized_lock', None)
else:
_lock2 = getattr(C4.function2, '_synchronized_lock', None)
self.assertNotEqual(_lock2, None)
self.assertEqual(_lock2, _lock1)
C4.function2()
if (3, 9) <= PYXY < (3, 13):
_lock3 = getattr(C4, '_synchronized_lock', None)
else:
_lock3 = getattr(C4.function2, '_synchronized_lock', None)
self.assertNotEqual(_lock3, None)
self.assertEqual(_lock3, _lock2)
def test_synchronized_instancemethod(self):
if hasattr(C1, '_synchronized_lock'):
del C1._synchronized_lock
_lock0 = getattr(c1, '_synchronized_lock', None)
self.assertEqual(_lock0, None)
C1.function1(c1)
_lock1 = getattr(c1, '_synchronized_lock', None)
self.assertNotEqual(_lock1, None)
c1.function1()
_lock2 = getattr(c1, '_synchronized_lock', None)
self.assertNotEqual(_lock2, None)
self.assertEqual(_lock2, _lock1)
c1.function1()
_lock3 = getattr(c1, '_synchronized_lock', None)
self.assertNotEqual(_lock3, None)
self.assertEqual(_lock3, _lock2)
del c1._synchronized_lock
C1.function2()
_lock4 = getattr(C1, '_synchronized_lock', None)
self.assertNotEqual(_lock4, None)
c1.function1()
_lock5 = getattr(c1, '_synchronized_lock', None)
self.assertNotEqual(_lock5, None)
self.assertNotEqual(_lock5, _lock4)
def test_synchronized_type_new_style(self):
if hasattr(C2, '_synchronized_lock'):
del C2._synchronized_lock
_lock0 = getattr(C2, '_synchronized_lock', None)
self.assertEqual(_lock0, None)
c2 = C2()
_lock1 = getattr(C2, '_synchronized_lock', None)
self.assertNotEqual(_lock1, None)
c2 = C2()
_lock2 = getattr(C2, '_synchronized_lock', None)
self.assertNotEqual(_lock2, None)
self.assertEqual(_lock2, _lock1)
c2 = C2()
_lock3 = getattr(C2, '_synchronized_lock', None)
self.assertNotEqual(_lock3, None)
self.assertEqual(_lock3, _lock2)
def test_synchronized_type_old_style(self):
if hasattr(C3, '_synchronized_lock'):
del C3._synchronized_lock
_lock0 = getattr(C3, '_synchronized_lock', None)
self.assertEqual(_lock0, None)
c2 = C3()
_lock1 = getattr(C3, '_synchronized_lock', None)
self.assertNotEqual(_lock1, None)
c2 = C3()
_lock2 = getattr(C3, '_synchronized_lock', None)
self.assertNotEqual(_lock2, None)
self.assertEqual(_lock2, _lock1)
c2 = C3()
_lock3 = getattr(C3, '_synchronized_lock', None)
self.assertNotEqual(_lock3, None)
self.assertEqual(_lock3, _lock2)
def test_synchronized_false_instance(self):
c5.function1()
self.assertEqual(bool(c5), False)
_lock1 = getattr(C5, '_synchronized_lock', None)
self.assertEqual(_lock1, None)
_lock2 = getattr(c5, '_synchronized_lock', None)
self.assertNotEqual(_lock2, None)
if __name__ == '__main__':
unittest.main()
|
