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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2011 OpenStack Foundation.
# Copyright 2011 Justin Santa Barbara
#
# All Rights Reserved.
#
# 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.
import functools
from openstack.common import funcutils
from tests import utils
class FuncutilsTestCase(utils.BaseTestCase):
def _test_func(self, instance, red=None, blue=None):
pass
def test_all_kwargs(self):
args = ()
kwargs = {'instance': {'uuid': 1}, 'red': 3, 'blue': 4}
callargs = funcutils.getcallargs(self._test_func, *args, **kwargs)
#implicit self counts as an arg
self.assertEqual(4, len(callargs))
self.assertTrue('instance' in callargs)
self.assertEqual({'uuid': 1}, callargs['instance'])
self.assertTrue('red' in callargs)
self.assertEqual(3, callargs['red'])
self.assertTrue('blue' in callargs)
self.assertEqual(4, callargs['blue'])
def test_all_args(self):
args = ({'uuid': 1}, 3, 4)
kwargs = {}
callargs = funcutils.getcallargs(self._test_func, *args, **kwargs)
#implicit self counts as an arg
self.assertEqual(4, len(callargs))
self.assertTrue('instance' in callargs)
self.assertEqual({'uuid': 1}, callargs['instance'])
self.assertTrue('red' in callargs)
self.assertEqual(3, callargs['red'])
self.assertTrue('blue' in callargs)
self.assertEqual(4, callargs['blue'])
def test_mixed_args(self):
args = ({'uuid': 1}, 3)
kwargs = {'blue': 4}
callargs = funcutils.getcallargs(self._test_func, *args, **kwargs)
#implicit self counts as an arg
self.assertEqual(4, len(callargs))
self.assertTrue('instance' in callargs)
self.assertEqual({'uuid': 1}, callargs['instance'])
self.assertTrue('red' in callargs)
self.assertEqual(3, callargs['red'])
self.assertTrue('blue' in callargs)
self.assertEqual(4, callargs['blue'])
def test_partial_kwargs(self):
args = ()
kwargs = {'instance': {'uuid': 1}, 'red': 3}
callargs = funcutils.getcallargs(self._test_func, *args, **kwargs)
#implicit self counts as an arg
self.assertEqual(4, len(callargs))
self.assertTrue('instance' in callargs)
self.assertEqual({'uuid': 1}, callargs['instance'])
self.assertTrue('red' in callargs)
self.assertEqual(3, callargs['red'])
self.assertTrue('blue' in callargs)
self.assertEqual(None, callargs['blue'])
def test_partial_args(self):
args = ({'uuid': 1}, 3)
kwargs = {}
callargs = funcutils.getcallargs(self._test_func, *args, **kwargs)
#implicit self counts as an arg
self.assertEqual(4, len(callargs))
self.assertTrue('instance' in callargs)
self.assertEqual({'uuid': 1}, callargs['instance'])
self.assertTrue('red' in callargs)
self.assertEqual(3, callargs['red'])
self.assertTrue('blue' in callargs)
self.assertEqual(None, callargs['blue'])
def test_partial_mixed_args(self):
args = (3,)
kwargs = {'instance': {'uuid': 1}}
callargs = funcutils.getcallargs(self._test_func, *args, **kwargs)
self.assertEqual(4, len(callargs))
self.assertTrue('instance' in callargs)
self.assertEqual({'uuid': 1}, callargs['instance'])
self.assertTrue('red' in callargs)
self.assertEqual(3, callargs['red'])
self.assertTrue('blue' in callargs)
self.assertEqual(None, callargs['blue'])
def _wrapper(self, function):
@functools.wraps(function)
def decorated_function(self, *args, **kwargs):
function(self, *args, **kwargs)
return decorated_function
def test_wrapped_X(self):
def wrapped(self, instance, red=None, blue=None):
pass
old_wrapped = wrapped
# Wrap it many times and ensure that its still the right one.
for _i in range(0, 10):
wrapped = self._wrapper(wrapped)
func = funcutils.get_wrapped_function(wrapped)
func_code = func.func_code
self.assertEqual(4, len(func_code.co_varnames))
self.assertTrue('self' in func_code.co_varnames)
self.assertTrue('instance' in func_code.co_varnames)
self.assertTrue('red' in func_code.co_varnames)
self.assertTrue('blue' in func_code.co_varnames)
self.assertEqual(old_wrapped, func)
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