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 class TestUtil(unittest.TestCase):
  22
  23    def test_wait_for_method_basic(self):
  24        def foobar():
  25            return True
  26        assert utils.wait_for_value(lambda: foobar())
  27
  28    def test_wait_for_method_timeout(self):
  29        def foobar():
  30            return False
  31        assert not utils.wait_for_value(lambda: foobar(),wait_time=0)
  32
  33    def test_wait_for_method_paramter(self):
  34        def foobar(input):
  35            return input
  36        assert not utils.wait_for_value(lambda: foobar(False),wait_time=0)
  37        assert utils.wait_for_value(lambda: foobar(True),wait_time=0)
  38
  39    def test_wait_for_method_wait_for_change(self):
  40        def foobar():
  41            if foobar.counter == 0:
  42                return True
  43            foobar.counter -=1
  44            return False
  45        foobar.counter=1
  46        assert utils.wait_for_value(lambda: foobar(),wait_time=1)
  47
  48    def test_wait_for_method_exception(self):
  49        def foobar():
  50            raise Exception('send exception')
  51        assert not utils.wait_for_value(lambda: foobar(),wait_time=0,catch_exception=Exception)
  52
  53    def test_wait_for_method_first_exception(self):
  54        def foobar():
  55            if foobar.counter == 0:
  56                return True
  57            foobar.counter -=1
  58            raise Exception('send exception')
  59        foobar.counter=1
  60        assert utils.wait_for_value(lambda: foobar(),wait_time=1,catch_exception=Exception)