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# Copyright 2014, 2015 IBM Corp.
#
# 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
import unittest
import mock
import pypowervm.adapter as adp
def cat_string_helper(func, string):
def wrapper(*args, **kwds):
return func(*args, **kwds) + string
return wrapper
class TestHelpers(unittest.TestCase):
def test_none(self):
adpt = adp.Adapter('mock_session', helpers=None)
self.assertEqual([], adpt.helpers)
def test_single(self):
hlp = functools.partial(cat_string_helper, string="purple!")
adpt = adp.Adapter('mock_session', helpers=hlp)
self.assertEqual([hlp], adpt.helpers)
def test_single_list(self):
hlp = functools.partial(cat_string_helper, string="purple!")
hlp_list = [hlp]
adpt = adp.Adapter('mock_session', helpers=hlp_list)
self.assertEqual(hlp_list, adpt.helpers)
# Use this test to ensure the list returned is a copy
self.assertNotEqual(id(hlp_list), id(adpt.helpers))
def test_multi_list(self):
hlp1 = functools.partial(cat_string_helper, string="1")
hlp2 = functools.partial(cat_string_helper, string="2")
adpt = adp.Adapter('mock_session',
helpers=[hlp1, hlp2])
self.assertEqual([hlp1, hlp2], adpt.helpers)
@mock.patch('pypowervm.adapter.Session')
def test_no_helpers(self, mock_sess):
mock_sess.request.return_value = 'ReturnValue'
adpt = adp.Adapter(mock_sess)
self.assertEqual('ReturnValue',
adpt._request('method', 'path'))
@mock.patch('pypowervm.adapter.Session')
def test_runs(self, mock_sess):
hlp1 = functools.partial(cat_string_helper, string="1")
hlp2 = functools.partial(cat_string_helper, string="2")
hlp3 = functools.partial(cat_string_helper, string="3")
mock_sess.request.return_value = 'countdown:'
adpt = adp.Adapter(
mock_sess, helpers=[hlp1, hlp2, hlp3])
self.assertEqual('countdown:321',
adpt._request('method', 'path'))
# Override adapter helpers
self.assertEqual('countdown:2',
adpt._request('method', 'path', helpers=hlp2))
# No adapter helpers, but request helper
adpt = adp.Adapter(mock_sess)
self.assertEqual('countdown:1',
adpt._request('method', 'path', helpers=[hlp1]))
@mock.patch('pypowervm.adapter.Session')
def test_invalid_helper(self, mock_sess):
hlp = "bad helper, shame on you"
mock_sess.request.return_value = 'Should not get returned'
adpt = adp.Adapter(mock_sess, helpers=hlp)
with self.assertRaises(TypeError):
adpt._request('method', 'path')
adpt = adp.Adapter(mock_sess)
with self.assertRaises(TypeError):
adpt._request('method', 'path', helpers=[hlp])
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