unit_tests/libs/ota/ota_tools/ota_tool_factory_test.py

#!/usr/bin/env python3
#
# Copyright 2022 The Fuchsia Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import unittest
from antlion.libs.ota.ota_tools import ota_tool_factory


class MockOtaTool(object):
    def __init__(self, command):
        self.command = command


class OtaToolFactoryTests(unittest.TestCase):
    def setUp(self):
        ota_tool_factory._constructed_tools = {}

    def test_create_constructor_exists(self):
        ota_tool_factory._CONSTRUCTORS = {
            MockOtaTool.__name__: lambda command: MockOtaTool(command),
        }
        ret = ota_tool_factory.create(MockOtaTool.__name__, 'command')
        self.assertEqual(type(ret), MockOtaTool)
        self.assertTrue(ret in ota_tool_factory._constructed_tools.values())

    def test_create_not_in_constructors(self):
        ota_tool_factory._CONSTRUCTORS = {}
        with self.assertRaises(KeyError):
            ota_tool_factory.create(MockOtaTool.__name__, 'command')

    def test_create_returns_cached_tool(self):
        ota_tool_factory._CONSTRUCTORS = {
            MockOtaTool.__name__: lambda command: MockOtaTool(command),
        }
        ret_a = ota_tool_factory.create(MockOtaTool.__name__, 'command')
        ret_b = ota_tool_factory.create(MockOtaTool.__name__, 'command')
        self.assertEqual(ret_a, ret_b)


if __name__ == '__main__':
    unittest.main()