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from __future__ import print_function
import unittest
import types
import wrapt
from compat import exec_, getfullargspec
DECORATORS_CODE = """
import wrapt
@wrapt.decorator
def passthru_decorator(wrapped, instance, args, kwargs):
return wrapped(*args, **kwargs)
"""
decorators = types.ModuleType('decorators')
exec_(DECORATORS_CODE, decorators.__dict__, decorators.__dict__)
class Class(object):
@classmethod
def function(self, arg):
'''documentation'''
return arg
Original = Class
class Class(object):
@decorators.passthru_decorator
@classmethod
def function(self, arg):
'''documentation'''
return arg
class TestNamingInnerClassMethod(unittest.TestCase):
def test_class_object_name(self):
# Test preservation of instance method __name__ attribute.
self.assertEqual(Class.function.__name__,
Original.function.__name__)
def test_instance_object_name(self):
# Test preservation of instance method __name__ attribute.
self.assertEqual(Class().function.__name__,
Original().function.__name__)
def test_class_object_qualname(self):
# Test preservation of instance method __qualname__ attribute.
try:
__qualname__ = Original.original.__qualname__
except AttributeError:
pass
else:
self.assertEqual(Class.function.__qualname__, __qualname__)
def test_instance_object_qualname(self):
# Test preservation of instance method __qualname__ attribute.
try:
__qualname__ = Original().original.__qualname__
except AttributeError:
pass
else:
self.assertEqual(Class().function.__qualname__, __qualname__)
def test_class_module_name(self):
# Test preservation of instance method __module__ attribute.
self.assertEqual(Class.function.__module__,
Original.function.__module__)
def test_instance_module_name(self):
# Test preservation of instance method __module__ attribute.
self.assertEqual(Class().function.__module__,
Original().function.__module__)
def test_class_doc_string(self):
# Test preservation of instance method __doc__ attribute.
self.assertEqual(Class.function.__doc__,
Original.function.__doc__)
def test_instance_doc_string(self):
# Test preservation of instance method __doc__ attribute.
self.assertEqual(Class().function.__doc__,
Original().function.__doc__)
def test_class_argspec(self):
# Test preservation of instance method argument specification.
original_argspec = getfullargspec(Original.function)
function_argspec = getfullargspec(Class.function)
self.assertEqual(original_argspec, function_argspec)
def test_instance_argspec(self):
# Test preservation of instance method argument specification.
original_argspec = getfullargspec(Original().function)
function_argspec = getfullargspec(Class().function)
self.assertEqual(original_argspec, function_argspec)
def test_class_isinstance(self):
# Test preservation of isinstance() checks.
self.assertTrue(isinstance(Class.function,
type(Original.function)))
def test_instance_isinstance(self):
# Test preservation of isinstance() checks.
self.assertTrue(isinstance(Class().function,
type(Original().function)))
class TestCallingInnerClassMethod(unittest.TestCase):
def test_class_call_function(self):
# Test calling classmethod.
_args = (1, 2)
_kwargs = {'one': 1, 'two': 2}
@wrapt.decorator
def _decorator(wrapped, instance, args, kwargs):
self.assertEqual(instance, Class)
self.assertEqual(args, _args)
self.assertEqual(kwargs, _kwargs)
return wrapped(*args, **kwargs)
@_decorator
def _function(*args, **kwargs):
return args, kwargs
class Class(object):
@_decorator
@classmethod
def _function(cls, *args, **kwargs):
return (args, kwargs)
result = Class._function(*_args, **_kwargs)
self.assertEqual(result, (_args, _kwargs))
def test_instance_call_function(self):
# Test calling classmethod via class instance.
_args = (1, 2)
_kwargs = {'one': 1, 'two': 2}
@wrapt.decorator
def _decorator(wrapped, instance, args, kwargs):
self.assertEqual(instance, Class)
self.assertEqual(args, _args)
self.assertEqual(kwargs, _kwargs)
return wrapped(*args, **kwargs)
@_decorator
def _function(*args, **kwargs):
return args, kwargs
class Class(object):
@_decorator
@classmethod
def _function(cls, *args, **kwargs):
return (args, kwargs)
result = Class()._function(*_args, **_kwargs)
self.assertEqual(result, (_args, _kwargs))
def test_class_call_function_nested_decorators(self):
# Test calling classmethod.
_args = (1, 2)
_kwargs = {'one': 1, 'two': 2}
@wrapt.decorator
def _decorator(wrapped, instance, args, kwargs):
self.assertEqual(instance, Class)
self.assertEqual(args, _args)
self.assertEqual(kwargs, _kwargs)
return wrapped(*args, **kwargs)
@_decorator
def _function(*args, **kwargs):
return args, kwargs
class Class(object):
@_decorator
@_decorator
@classmethod
def _function(cls, *args, **kwargs):
return (args, kwargs)
result = Class._function(*_args, **_kwargs)
self.assertEqual(result, (_args, _kwargs))
def test_instance_call_function_nested_decorators(self):
# Test calling classmethod via class instance.
_args = (1, 2)
_kwargs = {'one': 1, 'two': 2}
@wrapt.decorator
def _decorator(wrapped, instance, args, kwargs):
self.assertEqual(instance, Class)
self.assertEqual(args, _args)
self.assertEqual(kwargs, _kwargs)
return wrapped(*args, **kwargs)
@_decorator
def _function(*args, **kwargs):
return args, kwargs
class Class(object):
@_decorator
@_decorator
@classmethod
def _function(cls, *args, **kwargs):
return (args, kwargs)
result = Class()._function(*_args, **_kwargs)
self.assertEqual(result, (_args, _kwargs))
def test_class_externally_applied_wrapper(self):
# Test calling staticmethod via class when
# the decorator has been applied from external to
# the class using wrapping function.
_args = (1, 2)
_kwargs = {'one': 1, 'two': 2}
class Class(object):
@classmethod
def _function(cls, *args, **kwargs):
return (args, kwargs)
def _decorator(wrapped, instance, args, kwargs):
self.assertEqual(instance, Class)
self.assertEqual(args, _args)
self.assertEqual(kwargs, _kwargs)
return wrapped(*args, **kwargs)
wrapt.wrap_function_wrapper(Class, "_function", _decorator)
result = Class._function(*_args, **_kwargs)
self.assertEqual(result, (_args, _kwargs))
def test_instance_externally_applied_wrapper(self):
# Test calling staticmethod via class instance when
# the decorator has been applied from external to
# the class using wrapping function.
_args = (1, 2)
_kwargs = {'one': 1, 'two': 2}
class Class(object):
@classmethod
def _function(cls, *args, **kwargs):
return (args, kwargs)
def _decorator(wrapped, instance, args, kwargs):
self.assertEqual(instance, Class)
self.assertEqual(args, _args)
self.assertEqual(kwargs, _kwargs)
return wrapped(*args, **kwargs)
wrapt.wrap_function_wrapper(Class, "_function", _decorator)
result = Class()._function(*_args, **_kwargs)
self.assertEqual(result, (_args, _kwargs))
def test_class_externally_passed_wrapper(self):
# Test calling classmethod via class when
# the decorator has been applied around reference
# to the function.
_args = (1, 2)
_kwargs = {'one': 1, 'two': 2}
class Class(object):
@classmethod
def _function(cls, *args, **kwargs):
return (args, kwargs)
@wrapt.decorator
def _decorator(wrapped, instance, args, kwargs):
self.assertEqual(instance, Class)
self.assertEqual(args, _args)
self.assertEqual(kwargs, _kwargs)
return wrapped(*args, **kwargs)
_function = _decorator(Class._function)
result = _function(*_args, **_kwargs)
self.assertEqual(result, (_args, _kwargs))
def test_instance_externally_passed_wrapper(self):
# Test calling classmethod via class instance when
# the decorator has been applied around reference
# to the function.
_args = (1, 2)
_kwargs = {'one': 1, 'two': 2}
class Class(object):
@classmethod
def _function(cls, *args, **kwargs):
return (args, kwargs)
@wrapt.decorator
def _decorator(wrapped, instance, args, kwargs):
self.assertEqual(instance, Class)
self.assertEqual(args, _args)
self.assertEqual(kwargs, _kwargs)
return wrapped(*args, **kwargs)
_function = _decorator(Class()._function)
result = _function(*_args, **_kwargs)
self.assertEqual(result, (_args, _kwargs))
if __name__ == '__main__':
unittest.main()
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