153 lines
6.6 KiB
Python
153 lines
6.6 KiB
Python
# Copyright 2011 OpenStack Foundation.
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# All Rights Reserved.
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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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import datetime
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import sys
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from oslotest import base as test_base
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from oslo_utils import importutils
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class ImportUtilsTest(test_base.BaseTestCase):
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# NOTE(jkoelker) There has GOT to be a way to test this. But mocking
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# __import__ is the devil. Right now we just make
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# sure we can import something from the stdlib
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def test_import_class(self):
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dt = importutils.import_class('datetime.datetime')
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self.assertEqual(sys.modules['datetime'].datetime, dt)
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def test_import_bad_class(self):
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self.assertRaises(ImportError, importutils.import_class,
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'lol.u_mad.brah')
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def test_import_module(self):
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dt = importutils.import_module('datetime')
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self.assertEqual(sys.modules['datetime'], dt)
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def test_import_object_optional_arg_not_present(self):
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obj = importutils.import_object('oslo_utils.tests.fake.FakeDriver')
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self.assertEqual(obj.__class__.__name__, 'FakeDriver')
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def test_import_object_optional_arg_present(self):
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obj = importutils.import_object('oslo_utils.tests.fake.FakeDriver',
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first_arg=False)
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self.assertEqual(obj.__class__.__name__, 'FakeDriver')
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def test_import_object_required_arg_not_present(self):
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# arg 1 isn't optional here
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self.assertRaises(TypeError, importutils.import_object,
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'oslo_utils.tests.fake.FakeDriver2')
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def test_import_object_required_arg_present(self):
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obj = importutils.import_object('oslo_utils.tests.fake.FakeDriver2',
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first_arg=False)
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self.assertEqual(obj.__class__.__name__, 'FakeDriver2')
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# namespace tests
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def test_import_object_ns_optional_arg_not_present(self):
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obj = importutils.import_object_ns('oslo_utils',
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'tests.fake.FakeDriver')
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self.assertEqual(obj.__class__.__name__, 'FakeDriver')
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def test_import_object_ns_optional_arg_present(self):
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obj = importutils.import_object_ns('oslo_utils',
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'tests.fake.FakeDriver',
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first_arg=False)
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self.assertEqual(obj.__class__.__name__, 'FakeDriver')
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def test_import_object_ns_required_arg_not_present(self):
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# arg 1 isn't optional here
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self.assertRaises(TypeError, importutils.import_object_ns,
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'oslo_utils', 'tests.fake.FakeDriver2')
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def test_import_object_ns_required_arg_present(self):
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obj = importutils.import_object_ns('oslo_utils',
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'tests.fake.FakeDriver2',
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first_arg=False)
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self.assertEqual(obj.__class__.__name__, 'FakeDriver2')
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# namespace tests
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def test_import_object_ns_full_optional_arg_not_present(self):
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obj = importutils.import_object_ns('tests2',
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'oslo_utils.tests.fake.FakeDriver')
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self.assertEqual(obj.__class__.__name__, 'FakeDriver')
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def test_import_object_ns_full_optional_arg_present(self):
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obj = importutils.import_object_ns('tests2',
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'oslo_utils.tests.fake.FakeDriver',
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first_arg=False)
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self.assertEqual(obj.__class__.__name__, 'FakeDriver')
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def test_import_object_ns_full_required_arg_not_present(self):
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# arg 1 isn't optional here
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self.assertRaises(TypeError, importutils.import_object_ns,
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'tests2', 'oslo_utils.tests.fake.FakeDriver2')
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def test_import_object_ns_full_required_arg_present(self):
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obj = importutils.import_object_ns('tests2',
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'oslo_utils.tests.fake.FakeDriver2',
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first_arg=False)
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self.assertEqual(obj.__class__.__name__, 'FakeDriver2')
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def test_import_object_ns_raise_import_error_in_init(self):
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self.assertRaises(ImportError, importutils.import_object_ns,
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'tests2', 'oslo_utils.tests.fake.FakeDriver3')
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def test_import_object(self):
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dt = importutils.import_object('datetime.time')
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self.assertIsInstance(dt, sys.modules['datetime'].time)
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def test_import_object_with_args(self):
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dt = importutils.import_object('datetime.datetime', 2012, 4, 5)
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self.assertIsInstance(dt, sys.modules['datetime'].datetime)
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self.assertEqual(dt, datetime.datetime(2012, 4, 5))
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def test_import_versioned_module(self):
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v2 = importutils.import_versioned_module('oslo_utils.tests.fake', 2)
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self.assertEqual(sys.modules['oslo_utils.tests.fake.v2'], v2)
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dummpy = importutils.import_versioned_module('oslo_utils.tests.fake',
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2, 'dummpy')
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self.assertEqual(sys.modules['oslo_utils.tests.fake.v2.dummpy'],
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dummpy)
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def test_import_versioned_module_wrong_version_parameter(self):
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self.assertRaises(ValueError,
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importutils.import_versioned_module,
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'oslo_utils.tests.fake', "2.0", 'fake')
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def test_import_versioned_module_error(self):
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self.assertRaises(ImportError,
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importutils.import_versioned_module,
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'oslo_utils.tests.fake', 2, 'fake')
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def test_try_import(self):
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dt = importutils.try_import('datetime')
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self.assertEqual(sys.modules['datetime'], dt)
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def test_try_import_returns_default(self):
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foo = importutils.try_import('foo.bar')
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self.assertIsNone(foo)
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def test_import_any_none_found(self):
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self.assertRaises(ImportError, importutils.import_any,
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'foo.bar', 'foo.foo.bar')
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def test_import_any_found(self):
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dt = importutils.import_any('foo.bar', 'datetime')
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self.assertEqual(sys.modules['datetime'], dt)
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