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How to use get_namespaces method in lisa

Best Python code snippet using lisa_python

watch_test.py

Source:watch_test.py

1#!/usr/bin/env python2# Copyright 2016 The Kubernetes Authors.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 at7#8#     http://www.apache.org/licenses/LICENSE-2.09#10# Unless required by applicable law or agreed to in writing, software11# 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 and14# limitations under the License.15import unittest16from mock import Mock, call17from .watch import Watch18class WatchTests(unittest.TestCase):19  def setUp(self):20    # counter for a test that needs test global state21    self.callcount = 022  def test_watch_with_decode(self):23    fake_resp = Mock()24    fake_resp.close = Mock()25    fake_resp.release_conn = Mock()26    fake_resp.read_chunked = Mock(return_value=[27        '{"type": "ADDED", "object": {"metadata": {"name": "test1",'28        '"resourceVersion": "1"}, "spec": {}, "status": {}}}\n',29        '{"type": "ADDED", "object": {"metadata": {"name": "test2",'30        '"resourceVersion": "2"}, "spec": {}, "sta', 'tus": {}}}\n'31        '{"type": "ADDED", "object": {"metadata": {"name": "test3",'32        '"resourceVersion": "3"}, "spec": {}, "status": {}}}\n',33        'should_not_happened\n'34    ])35    fake_api = Mock()36    fake_api.get_namespaces = Mock(return_value=fake_resp)37    fake_api.get_namespaces.__doc__ = ':return: V1NamespaceList'38    w = Watch()39    count = 140    for e in w.stream(fake_api.get_namespaces):41      self.assertEqual('ADDED', e['type'])42      # make sure decoder worked and we got a model with the right name43      self.assertEqual('test%d' % count, e['object'].metadata.name)44      # make sure decoder worked and updated Watch.resource_version45      self.assertEqual('%d' % count, e['object'].metadata.resource_version)46      self.assertEqual('%d' % count, w.resource_version)47      count += 148      # make sure we can stop the watch and the last event with won't be49      # returned50      if count == 4:51        w.stop()52    fake_api.get_namespaces.assert_called_once_with(53        _preload_content=False, watch=True)54    fake_resp.read_chunked.assert_called_once_with(decode_content=False)55    fake_resp.close.assert_called_once()56    fake_resp.release_conn.assert_called_once()57  def test_watch_for_follow(self):58    fake_resp = Mock()59    fake_resp.close = Mock()60    fake_resp.release_conn = Mock()61    fake_resp.read_chunked = Mock(return_value=['log_line_1\n', 'log_line_2\n'])62    fake_api = Mock()63    fake_api.read_namespaced_pod_log = Mock(return_value=fake_resp)64    fake_api.read_namespaced_pod_log.__doc__ = (':param bool follow:\n:return: '65                                                'str')66    w = Watch()67    count = 168    for e in w.stream(fake_api.read_namespaced_pod_log):69      self.assertEqual('log_line_1', e)70      count += 171      # make sure we can stop the watch and the last event with won't be72      # returned73      if count == 2:74        w.stop()75    fake_api.read_namespaced_pod_log.assert_called_once_with(76        _preload_content=False, follow=True)77    fake_resp.read_chunked.assert_called_once_with(decode_content=False)78    fake_resp.close.assert_called_once()79    fake_resp.release_conn.assert_called_once()80  def test_watch_resource_version_set(self):81    # https://github.com/kubernetes-client/python/issues/70082    # ensure watching from a resource version does reset to resource83    # version 0 after k8s resets the watch connection84    fake_resp = Mock()85    fake_resp.close = Mock()86    fake_resp.release_conn = Mock()87    values = [88        '{"type": "ADDED", "object": {"metadata": {"name": "test1",'89        '"resourceVersion": "1"}, "spec": {}, "status": {}}}\n',90        '{"type": "ADDED", "object": {"metadata": {"name": "test2",'91        '"resourceVersion": "2"}, "spec": {}, "sta', 'tus": {}}}\n'92        '{"type": "ADDED", "object": {"metadata": {"name": "test3",'93        '"resourceVersion": "3"}, "spec": {}, "status": {}}}\n'94    ]95    # return nothing on the first call and values on the second96    # this emulates a watch from a rv that returns nothing in the first k8s97    # watch reset and values later98    def get_values(*args, **kwargs):99      self.callcount += 1100      if self.callcount == 1:101        return []102      else:103        return values104    fake_resp.read_chunked = Mock(side_effect=get_values)105    fake_api = Mock()106    fake_api.get_namespaces = Mock(return_value=fake_resp)107    fake_api.get_namespaces.__doc__ = ':return: V1NamespaceList'108    w = Watch()109    # ensure we keep our requested resource version or the version latest110    # returned version when the existing versions are older than the111    # requested version112    # needed for the list existing objects, then watch from there use case113    calls = []114    iterations = 2115    # first two calls must use the passed rv, the first call is a116    # "reset" and does not actually return anything117    # the second call must use the same rv but will return values118    # (with a wrong rv but a real cluster would behave correctly)119    # calls following that will use the rv from those returned values120    calls.append(call(_preload_content=False, watch=True, resource_version='5'))121    calls.append(call(_preload_content=False, watch=True, resource_version='5'))122    for i in range(iterations):123      # ideally we want 5 here but as rv must be treated as an124      # opaque value we cannot interpret it and order it so rely125      # on k8s returning the events completely and in order126      calls.append(127          call(_preload_content=False, watch=True, resource_version='3'))128    for c, e in enumerate(129        w.stream(fake_api.get_namespaces, resource_version='5')):130      if c == len(values) * iterations:131        w.stop()132    # check calls are in the list, gives good error output133    fake_api.get_namespaces.assert_has_calls(calls)134    # more strict test with worse error message135    self.assertEqual(fake_api.get_namespaces.mock_calls, calls)136  def test_watch_stream_twice(self):137    w = Watch(float)138    for step in ['first', 'second']:139      fake_resp = Mock()140      fake_resp.close = Mock()141      fake_resp.release_conn = Mock()142      fake_resp.read_chunked = Mock(143          return_value=['{"type": "ADDED", "object": 1}\n'] * 4)144      fake_api = Mock()145      fake_api.get_namespaces = Mock(return_value=fake_resp)146      fake_api.get_namespaces.__doc__ = ':return: V1NamespaceList'147      count = 1148      for e in w.stream(fake_api.get_namespaces):149        count += 1150        if count == 3:151          w.stop()152      self.assertEqual(count, 3)153      fake_api.get_namespaces.assert_called_once_with(154          _preload_content=False, watch=True)155      fake_resp.read_chunked.assert_called_once_with(decode_content=False)156      fake_resp.close.assert_called_once()157      fake_resp.release_conn.assert_called_once()158  def test_watch_stream_loop(self):159    w = Watch(float)160    fake_resp = Mock()161    fake_resp.close = Mock()162    fake_resp.release_conn = Mock()163    fake_resp.read_chunked = Mock(164        return_value=['{"type": "ADDED", "object": 1}\n'])165    fake_api = Mock()166    fake_api.get_namespaces = Mock(return_value=fake_resp)167    fake_api.get_namespaces.__doc__ = ':return: V1NamespaceList'168    count = 0169    # when timeout_seconds is set, auto-exist when timeout reaches170    for e in w.stream(fake_api.get_namespaces, timeout_seconds=1):171      count = count + 1172    self.assertEqual(count, 1)173    # when no timeout_seconds, only exist when w.stop() is called174    for e in w.stream(fake_api.get_namespaces):175      count = count + 1176      if count == 2:177        w.stop()178    self.assertEqual(count, 2)179    self.assertEqual(fake_api.get_namespaces.call_count, 2)180    self.assertEqual(fake_resp.read_chunked.call_count, 2)181    self.assertEqual(fake_resp.close.call_count, 2)182    self.assertEqual(fake_resp.release_conn.call_count, 2)183  def test_unmarshal_with_float_object(self):184    w = Watch()185    event = w.unmarshal_event('{"type": "ADDED", "object": 1}', 'float')186    self.assertEqual('ADDED', event['type'])187    self.assertEqual(1.0, event['object'])188    self.assertTrue(isinstance(event['object'], float))189    self.assertEqual(1, event['raw_object'])190  def test_unmarshal_with_no_return_type(self):191    w = Watch()192    event = w.unmarshal_event('{"type": "ADDED", "object": ["test1"]}', None)193    self.assertEqual('ADDED', event['type'])194    self.assertEqual(['test1'], event['object'])195    self.assertEqual(['test1'], event['raw_object'])196  def test_unmarshal_with_custom_object(self):197    w = Watch()198    event = w.unmarshal_event(199        '{"type": "ADDED", "object": {"apiVersion":'200        '"test.com/v1beta1","kind":"foo","metadata":'201        '{"name": "bar", "resourceVersion": "1"}}}', 'object')202    self.assertEqual('ADDED', event['type'])203    # make sure decoder deserialized json into dictionary and updated204    # Watch.resource_version205    self.assertTrue(isinstance(event['object'], dict))206    self.assertEqual('1', event['object']['metadata']['resourceVersion'])207    self.assertEqual('1', w.resource_version)208  def test_watch_with_exception(self):209    fake_resp = Mock()210    fake_resp.close = Mock()211    fake_resp.release_conn = Mock()212    fake_resp.read_chunked = Mock(side_effect=KeyError('expected'))213    fake_api = Mock()214    fake_api.get_thing = Mock(return_value=fake_resp)215    w = Watch()216    try:217      for _ in w.stream(fake_api.get_thing):218        self.fail(self, 'Should fail on exception.')219    except KeyError:220      pass221      # expected222    fake_api.get_thing.assert_called_once_with(223        _preload_content=False, watch=True)224    fake_resp.read_chunked.assert_called_once_with(decode_content=False)225    fake_resp.close.assert_called_once()226    fake_resp.release_conn.assert_called_once()227if __name__ == '__main__':...

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