OpenMetadata/ingestion/tests/unit/topology/test_context_manager.py
2025-04-03 10:39:47 +05:30

82 lines
3.2 KiB
Python

# Copyright 2025 Collate
# Licensed under the Collate Community License, Version 1.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# https://github.com/open-metadata/OpenMetadata/blob/main/ingestion/LICENSE
# 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.
"""
Check context manager operations
"""
from unittest import TestCase
from unittest.mock import patch
from metadata.ingestion.models.topology import TopologyContextManager
from metadata.ingestion.source.database.database_service import DatabaseServiceTopology
MAIN_THREAD = 1
OTHER_THREAD = 2
MOCK_DATABASE_NAME = "MyDatabase"
class TopologyContextManagerTest(TestCase):
"""Validate context manager ops"""
def __init__(self, methodName) -> None:
super().__init__(methodName)
# Randomly picked up to test
self.topology = DatabaseServiceTopology()
with patch("threading.get_ident", return_value=MAIN_THREAD):
self.manager = TopologyContextManager(self.topology)
def test_main_thread_is_set_correctly(self):
"""Asserts self.main_thread is set accordingly."""
self.assertEqual(self.manager.main_thread, MAIN_THREAD)
def test_get_returns_correct_context(self):
"""Asserts get and get_global returns the correct context even on a different thread."""
# Create a new thread context based on the main thread
with patch("threading.get_ident", return_value=OTHER_THREAD):
# Create the new thread context based on the main thread one
self.manager.copy_from(MAIN_THREAD)
self.manager.get_global().database = MOCK_DATABASE_NAME
self.assertEqual(self.manager.get().database, None)
self.assertEqual(self.manager.get_global().database, MOCK_DATABASE_NAME)
def test_thread_is_created_correctly(self):
"""Asserts copy_from copies correctly the context from parent thread."""
# Set the 'database' attribute
with patch("threading.get_ident", return_value=MAIN_THREAD):
self.manager.get().database = MOCK_DATABASE_NAME
with patch("threading.get_ident", return_value=OTHER_THREAD):
# Create the new thread context based on the main thread one
self.manager.copy_from(MAIN_THREAD)
# Check we are retrieving the right thread
self.assertEqual(self.manager.get().database, MOCK_DATABASE_NAME)
def test_pop_removes_the_correct_thread(self):
"""Asserts pop removes the correct thread and not another one."""
with patch("threading.get_ident", return_value=OTHER_THREAD):
self.manager.copy_from(MAIN_THREAD)
self.assertEqual(
list(self.manager.contexts.keys()), [MAIN_THREAD, OTHER_THREAD]
)
self.manager.pop(OTHER_THREAD)
self.assertEqual(list(self.manager.contexts.keys()), [MAIN_THREAD])