493e57c195
If the userdata starts with the text '## template:jinja', Jinja2 templating engine will be used to render that userdata. This feature leverages the get_instance_data metadata service implementation and tries to be as close as possible with the cloud-init's implementation. Change-Id: I79cb0066f7d65ae27867ac01b443e9be432b4dc3
59 lines
2.1 KiB
Python
59 lines
2.1 KiB
Python
# Copyright 2019 Cloudbase Solutions Srl
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#
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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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try:
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import unittest.mock as mock
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except ImportError:
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import mock
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import unittest
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from cloudbaseinit.utils.template_engine import factory
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class FakeLoaderError(Exception):
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pass
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class TestTemplateFactory(unittest.TestCase):
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def test_get_template_engine_empty(self):
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fake_userdata = b''
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result = factory.get_template_engine(fake_userdata)
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self.assertEqual(result, None)
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def test_get_template_engine_no_match(self):
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fake_userdata = b'no match'
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result = factory.get_template_engine(fake_userdata)
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self.assertEqual(result, None)
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def test_get_template_engine_not_supported(self):
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fake_userdata = b'## template:fake'
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result = factory.get_template_engine(fake_userdata)
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self.assertEqual(result, None)
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@mock.patch('cloudbaseinit.utils.classloader.ClassLoader')
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def test_get_template_engine(self, mock_class_loader):
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fake_userdata = b'## template:jinja'
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mock_load_class = mock_class_loader.return_value.load_class
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self.assertEqual(mock_load_class.return_value.return_value,
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factory.get_template_engine(fake_userdata))
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@mock.patch('cloudbaseinit.utils.classloader.ClassLoader')
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def test_get_template_engine_class_not_found(self, mock_class_loader):
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fake_userdata = b'## template:jinja'
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mock_class_loader.return_value.load_class.side_effect = (
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FakeLoaderError)
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self.assertRaises(FakeLoaderError,
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factory.get_template_engine, fake_userdata)
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