260 lines
9.2 KiB
Python
260 lines
9.2 KiB
Python
#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import mock
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from heat.common import lifecycle_plugin_utils
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from heat.engine import lifecycle_plugin
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from heat.engine import resources
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from heat.tests import common
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empty_template = '''
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heat_template_version: '2013-05-23'
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description: Empty stack
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resources:
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'''
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class LifecyclePluginUtilsTest(common.HeatTestCase):
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"""Basic tests for :module:'heat.common.lifecycle_plugin_utils'.
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Basic tests for the helper methods in
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:module:'heat.common.lifecycle_plugin_utils'.
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"""
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def setUp(self):
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super(LifecyclePluginUtilsTest, self).setUp()
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def tearDown(self):
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super(LifecyclePluginUtilsTest, self).tearDown()
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lifecycle_plugin_utils.pp_class_instances = None
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def mock_lcp_class_map(self, lcp_mappings):
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self.m.UnsetStubs()
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self.m.StubOutWithMock(resources.global_env(),
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'get_stack_lifecycle_plugins')
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resources.global_env().get_stack_lifecycle_plugins(
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).MultipleTimes().AndReturn(lcp_mappings)
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self.m.ReplayAll()
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# reset cache
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lifecycle_plugin_utils.pp_class_instances = None
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def test_get_plug_point_class_instances(self):
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"""Tests the get_plug_point_class_instances function."""
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lcp_mappings = [('A::B::C1', TestLifecycleCallout1)]
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self.mock_lcp_class_map(lcp_mappings)
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pp_cinstances = lifecycle_plugin_utils.get_plug_point_class_instances()
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self.assertIsNotNone(pp_cinstances)
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self.assertTrue(self.is_iterable(pp_cinstances),
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"not iterable: %s" % pp_cinstances)
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self.assertTrue(len(pp_cinstances) == 1)
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self.assertEqual(TestLifecycleCallout1, pp_cinstances[0].__class__)
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def test_do_pre_and_post_callouts(self):
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lcp_mappings = [('A::B::C1', TestLifecycleCallout1)]
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self.mock_lcp_class_map(lcp_mappings)
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mc = mock.Mock()
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mc.__setattr__("pre_counter_for_unit_test", 0)
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mc.__setattr__("post_counter_for_unit_test", 0)
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ms = mock.Mock()
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ms.__setattr__("action", 'A')
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lifecycle_plugin_utils.do_pre_ops(mc, ms, None, None)
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self.assertEqual(1, mc.pre_counter_for_unit_test)
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lifecycle_plugin_utils.do_post_ops(mc, ms, None, None)
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self.assertEqual(1, mc.post_counter_for_unit_test)
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return
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def test_class_instantiation_and_sorting(self):
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lcp_mappings = []
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self.mock_lcp_class_map(lcp_mappings)
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pp_cis = lifecycle_plugin_utils.get_plug_point_class_instances()
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self.assertEqual(0, len(pp_cis))
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# order should change with sort
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lcp_mappings = [('A::B::C2', TestLifecycleCallout2),
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('A::B::C1', TestLifecycleCallout1)]
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self.mock_lcp_class_map(lcp_mappings)
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pp_cis = lifecycle_plugin_utils.get_plug_point_class_instances()
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self.assertEqual(2, len(pp_cis))
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self.assertEqual(100, pp_cis[0].get_ordinal())
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self.assertEqual(101, pp_cis[1].get_ordinal())
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self.assertEqual(TestLifecycleCallout1, pp_cis[0].__class__)
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self.assertEqual(TestLifecycleCallout2, pp_cis[1].__class__)
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# order should NOT change with sort
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lcp_mappings = [('A::B::C1', TestLifecycleCallout1),
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('A::B::C2', TestLifecycleCallout2)]
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self.mock_lcp_class_map(lcp_mappings)
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pp_cis = lifecycle_plugin_utils.get_plug_point_class_instances()
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self.assertEqual(2, len(pp_cis))
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self.assertEqual(100, pp_cis[0].get_ordinal())
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self.assertEqual(101, pp_cis[1].get_ordinal())
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self.assertEqual(TestLifecycleCallout1, pp_cis[0].__class__)
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self.assertEqual(TestLifecycleCallout2, pp_cis[1].__class__)
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# sort failure due to exception in thrown by ordinal
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lcp_mappings = [('A::B::C2', TestLifecycleCallout2),
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('A::B::C3', TestLifecycleCallout3),
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('A::B::C1', TestLifecycleCallout1)]
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self.mock_lcp_class_map(lcp_mappings)
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pp_cis = lifecycle_plugin_utils.get_plug_point_class_instances()
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self.assertEqual(3, len(pp_cis))
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self.assertEqual(100, pp_cis[2].get_ordinal())
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self.assertEqual(101, pp_cis[0].get_ordinal())
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# (can sort fail partially? If so then this test may break)
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self.assertEqual(TestLifecycleCallout2, pp_cis[0].__class__)
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self.assertEqual(TestLifecycleCallout3, pp_cis[1].__class__)
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self.assertEqual(TestLifecycleCallout1, pp_cis[2].__class__)
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return
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def test_do_pre_op_failure(self):
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lcp_mappings = [('A::B::C5', TestLifecycleCallout1),
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('A::B::C4', TestLifecycleCallout4)]
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self.mock_lcp_class_map(lcp_mappings)
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mc = mock.Mock()
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mc.__setattr__("pre_counter_for_unit_test", 0)
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mc.__setattr__("post_counter_for_unit_test", 0)
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ms = mock.Mock()
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ms.__setattr__("action", 'A')
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failed = False
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try:
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lifecycle_plugin_utils.do_pre_ops(mc, ms, None, None)
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except Exception:
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failed = True
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self.assertTrue(failed)
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self.assertEqual(1, mc.pre_counter_for_unit_test)
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self.assertEqual(1, mc.post_counter_for_unit_test)
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return
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def test_do_post_op_failure(self):
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lcp_mappings = [('A::B::C1', TestLifecycleCallout1),
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('A::B::C5', TestLifecycleCallout5)]
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self.mock_lcp_class_map(lcp_mappings)
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mc = mock.Mock()
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mc.__setattr__("pre_counter_for_unit_test", 0)
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mc.__setattr__("post_counter_for_unit_test", 0)
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ms = mock.Mock()
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ms.__setattr__("action", 'A')
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lifecycle_plugin_utils.do_post_ops(mc, ms, None, None)
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self.assertEqual(1, mc.post_counter_for_unit_test)
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return
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def test_exercise_base_lifecycle_plugin_class(self):
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lcp = lifecycle_plugin.LifecyclePlugin()
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ordinal = lcp.get_ordinal()
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lcp.do_pre_op(None, None, None)
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lcp.do_post_op(None, None, None)
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self.assertEqual(100, ordinal)
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return
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def is_iterable(self, obj):
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# special case string
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if not object:
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return False
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if isinstance(obj, str):
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return False
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# Test for iterabilityy
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try:
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for m in obj:
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break
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except TypeError:
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return False
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return True
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class TestLifecycleCallout1(lifecycle_plugin.LifecyclePlugin):
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"""Sample test class for testing pre-op and post-op work on a stack."""
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def do_pre_op(self, cnxt, stack, current_stack=None, action=None):
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cnxt.pre_counter_for_unit_test += 1
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def do_post_op(self, cnxt, stack, current_stack=None, action=None,
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is_stack_failure=False):
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cnxt.post_counter_for_unit_test += 1
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def get_ordinal(self):
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return 100
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class TestLifecycleCallout2(lifecycle_plugin.LifecyclePlugin):
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"""Sample test class for testing pre-op and post-op work on a stack.
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Different ordinal and increment counters by 2.
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"""
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def do_pre_op(self, cnxt, stack, current_stack=None, action=None):
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cnxt.pre_counter_for_unit_test += 2
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def do_post_op(self, cnxt, stack, current_stack=None, action=None,
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is_stack_failure=False):
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cnxt.post_counter_for_unit_test += 2
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def get_ordinal(self):
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return 101
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class TestLifecycleCallout3(lifecycle_plugin.LifecyclePlugin):
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"""Sample test class for testing pre-op and post-op work on a stack.
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Methods raise exceptions.
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"""
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def do_pre_op(self, cnxt, stack, current_stack=None, action=None):
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raise Exception()
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def do_post_op(self, cnxt, stack, current_stack=None, action=None,
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is_stack_failure=False):
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raise Exception()
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def get_ordinal(self):
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raise Exception()
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class TestLifecycleCallout4(lifecycle_plugin.LifecyclePlugin):
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"""Sample test class for testing pre-op and post-op work on a stack.
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do_pre_op, do_post_op both throw exception.
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"""
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def do_pre_op(self, cnxt, stack, current_stack=None, action=None):
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raise Exception()
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def do_post_op(self, cnxt, stack, current_stack=None, action=None,
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is_stack_failure=False):
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raise Exception()
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def get_ordinal(self):
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return 103
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class TestLifecycleCallout5(lifecycle_plugin.LifecyclePlugin):
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"""Sample test class for testing pre-op and post-op work on a stack.
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do_post_op throws exception.
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"""
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def do_pre_op(self, cnxt, stack, current_stack=None, action=None):
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cnxt.pre_counter_for_unit_test += 1
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def do_post_op(self, cnxt, stack, current_stack=None, action=None,
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is_stack_failure=False):
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raise Exception()
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def get_ordinal(self):
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return 100
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