54 lines
1.8 KiB
Python
54 lines
1.8 KiB
Python
# Copyright 2011-2012 OpenStack Foundation
|
|
# 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.
|
|
"""
|
|
Tests For weights.
|
|
"""
|
|
|
|
from nova import test
|
|
from nova import weights
|
|
|
|
|
|
class TestWeigher(test.NoDBTestCase):
|
|
def test_no_multiplier(self):
|
|
class FakeWeigher(weights.BaseWeigher):
|
|
def _weigh_object(self, *args, **kwargs):
|
|
pass
|
|
|
|
self.assertEqual(1.0,
|
|
FakeWeigher().weight_multiplier())
|
|
|
|
def test_no_weight_object(self):
|
|
class FakeWeigher(weights.BaseWeigher):
|
|
def weight_multiplier(self, *args, **kwargs):
|
|
pass
|
|
self.assertRaises(TypeError,
|
|
FakeWeigher)
|
|
|
|
def test_normalization(self):
|
|
# weight_list, expected_result, minval, maxval
|
|
map_ = (
|
|
((), (), None, None),
|
|
((0.0, 0.0), (0.0, 0.0), None, None),
|
|
((1.0, 1.0), (0.0, 0.0), None, None),
|
|
|
|
((20.0, 50.0), (0.0, 1.0), None, None),
|
|
((20.0, 50.0), (0.0, 0.375), None, 100.0),
|
|
((20.0, 50.0), (0.4, 1.0), 0.0, None),
|
|
((20.0, 50.0), (0.2, 0.5), 0.0, 100.0),
|
|
)
|
|
for seq, result, minval, maxval in map_:
|
|
ret = weights.normalize(seq, minval=minval, maxval=maxval)
|
|
self.assertEqual(tuple(ret), result)
|