1#!/usr/bin/env python
2# Copyright 2012 Google Inc. All Rights Reserved.
3#
4# Licensed under the Apache License, Version 2.0 (the "License");
5# you may not use this file except in compliance with the License.
6# You may obtain a copy of the License at
7#
8#      http://www.apache.org/licenses/LICENSE-2.0
9#
10# Unless required by applicable law or agreed to in writing, software
11# distributed under the License is distributed on an "AS IS" BASIS,
12# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13# See the License for the specific language governing permissions and
14# limitations under the License.
15
16"""Unit tests for replay.
17
18Usage:
19$ ./replay_test.py
20"""
21
22import replay
23import unittest
24
25
26class MockOptions(dict):
27  """A dict with items that can be accessed as attributes."""
28  def __getattr__(self, name):
29    return self[name]
30
31
32class OptionsWrapperTest(unittest.TestCase):
33
34  def testNoTrafficShapingByDefault(self):
35    parser = replay.GetParser()
36    options = parser.parse_args([])
37    options = replay.OptionsWrapper(options, parser)
38    self.assertEqual({}, options.shaping_dns)
39    self.assertEqual({}, options.shaping_http)
40    self.assertEqual({}, options.shaping_dummynet)
41
42  def testShapingProxyWithoutOptionsGivesEmptySettings(self):
43    parser = replay.GetParser()
44    options = parser.parse_args(['--shaping=proxy'])
45    options = replay.OptionsWrapper(options, parser)
46    self.assertEqual({}, options.shaping_dns)
47    self.assertEqual({}, options.shaping_http)
48    self.assertEqual({}, options.shaping_dummynet)
49
50  def testShapingProxyWithNetOption(self):
51    parser = replay.GetParser()
52    options = parser.parse_args(['--shaping=proxy', '--net=cable'])
53    options = replay.OptionsWrapper(options, parser)
54    expected_http = {
55        'down_bandwidth': '5Mbit/s', 'delay_ms': '28', 'up_bandwidth': '1Mbit/s'
56        }
57    self.assertEqual({'delay_ms': '28'}, options.shaping_dns)
58    self.assertEqual(expected_http, options.shaping_http)
59    self.assertEqual({}, options.shaping_dummynet)
60
61  def testNetOptionUsesDummynetByDefault(self):
62    parser = replay.GetParser()
63    options = parser.parse_args(['--net=cable'])
64    options = replay.OptionsWrapper(options, parser)
65    expected_dummynet = {
66        'down_bandwidth': '5Mbit/s', 'delay_ms': '28', 'up_bandwidth': '1Mbit/s'
67        }
68    self.assertEqual({}, options.shaping_dns)
69    self.assertEqual({}, options.shaping_http)
70    self.assertEqual(expected_dummynet, options.shaping_dummynet)
71
72  def testPacketLossForDummynet(self):
73    parser = replay.GetParser()
74    options = parser.parse_args(['--packet_loss_rate=12'])
75    options = replay.OptionsWrapper(options, parser)
76    self.assertEqual({'packet_loss_rate': '12'}, options.shaping_dummynet)
77
78  def testIgnoredProxyShapingOptions(self):
79    parser = replay.GetParser()
80    options = parser.parse_args(
81        ['--packet_loss_rate=12', '--init_cwnd=10', '--shaping=proxy'])
82    options = replay.OptionsWrapper(options, parser)
83    self.assertEqual({}, options.shaping_dns)
84    self.assertEqual({}, options.shaping_http)
85    self.assertEqual({}, options.shaping_dummynet)
86
87
88if __name__ == '__main__':
89  unittest.main()
90