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from __future__ import print_function
import unittest
import wrapt
class TestDecorator(unittest.TestCase):
def test_no_parameters(self):
_args = (1, 2)
_kwargs = {'one': 1, 'two': 2}
@wrapt.decorator
def _decorator(wrapped, instance, args, kwargs):
return wrapped(*args, **kwargs)
@_decorator
def _function(*args, **kwargs):
return args, kwargs
result = _function(*_args, **_kwargs)
self.assertEqual(result, (_args, _kwargs))
def test_instance_method_as_decorator(self):
_args = (1, 2)
_kwargs = {'one': 1, 'two': 2}
class Instance(object):
def __init__(self):
self.count = 0
@wrapt.decorator
def decorator(self, wrapped, instance, args, kwargs):
self.count += 1
return wrapped(*args, **kwargs)
instance = Instance()
@instance.decorator
def _function(*args, **kwargs):
return args, kwargs
result = _function(*_args, **_kwargs)
self.assertEqual(result, (_args, _kwargs))
self.assertEqual(instance.count, 1)
result = _function(*_args, **_kwargs)
self.assertEqual(result, (_args, _kwargs))
self.assertEqual(instance.count, 2)
def test_class_method_as_decorator(self):
_args = (1, 2)
_kwargs = {'one': 1, 'two': 2}
class Instance(object):
count = 0
@wrapt.decorator
@classmethod
def decorator(cls, wrapped, instance, args, kwargs):
cls.count += 1
return wrapped(*args, **kwargs)
@Instance.decorator
def _function(*args, **kwargs):
return args, kwargs
result = _function(*_args, **_kwargs)
self.assertEqual(result, (_args, _kwargs))
self.assertEqual(Instance.count, 1)
result = _function(*_args, **_kwargs)
self.assertEqual(result, (_args, _kwargs))
self.assertEqual(Instance.count, 2)
def test_class_type_as_decorator(self):
_args = (1, 2)
_kwargs = {'one': 1, 'two': 2}
@wrapt.decorator
class ClassDecorator(object):
def __call__(self, wrapped, instance, args, kwargs):
return wrapped(*args, **kwargs)
@ClassDecorator
def _function(*args, **kwargs):
return args, kwargs
result = _function(*_args, **_kwargs)
self.assertEqual(result, (_args, _kwargs))
def test_class_type_as_decorator_args(self):
_args = (1, 2)
_kwargs = {'one': 1, 'two': 2}
@wrapt.decorator
class ClassDecorator(object):
def __init__(self, arg):
assert arg == 1
def __call__(self, wrapped, instance, args, kwargs):
return wrapped(*args, **kwargs)
@ClassDecorator(arg=1)
def _function(*args, **kwargs):
return args, kwargs
result = _function(*_args, **_kwargs)
self.assertEqual(result, (_args, _kwargs))
if __name__ == '__main__':
unittest.main()
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