osmclient/common/test/test_utils.py

   1 #  Copyright 2017 Sandvine
   2 #
   3 # All Rights Reserved.
   4 #
   5 #    Licensed under the Apache License, Version 2.0 (the "License"); you may
   6 #    not use this file except in compliance with the License. You may obtain
   7 #    a copy of the License at
   8 #
   9 #         http://www.apache.org/licenses/LICENSE-2.0
  10 #
  11 #    Unless required by applicable law or agreed to in writing, software
  12 #    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  13 #    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  14 #    License for the specific language governing permissions and limitations
  15 #    under the License.
  16
  17
  18 import unittest
  19 from osmclient.common import utils
  20
  21
  22 class TestUtil(unittest.TestCase):
  23
  24     def test_wait_for_method_basic(self):
  25         def foobar():
  26             return True
  27         assert utils.wait_for_value(lambda: foobar())
  28
  29     def test_wait_for_method_timeout(self):
  30         def foobar():
  31             return False
  32         assert not utils.wait_for_value(lambda: foobar(), wait_time=0)
  33
  34     def test_wait_for_method_paramter(self):
  35         def foobar(input):
  36             return input
  37         assert not utils.wait_for_value(lambda: foobar(False), wait_time=0)
  38         assert utils.wait_for_value(lambda: foobar(True), wait_time=0)
  39
  40     def test_wait_for_method_wait_for_change(self):
  41         def foobar():
  42             if foobar.counter == 0:
  43                 return True
  44             foobar.counter -= 1
  45             return False
  46         foobar.counter = 1
  47         assert utils.wait_for_value(lambda: foobar(), wait_time=1)
  48
  49     def test_wait_for_method_exception(self):
  50         def foobar():
  51             raise Exception('send exception')
  52         assert not utils.wait_for_value(
  53             lambda: foobar(),
  54             wait_time=0,
  55             catch_exception=Exception)
  56
  57     def test_wait_for_method_first_exception(self):
  58         def foobar():
  59             if foobar.counter == 0:
  60                 return True
  61             foobar.counter -= 1
  62             raise Exception('send exception')
  63         foobar.counter = 1
  64         assert utils.wait_for_value(
  65             lambda: foobar(),
  66             wait_time=1,
  67             catch_exception=Exception)